Biodiversity Data Journal : Taxonomic paper
Print
Taxonomic paper
Terrestrial gastropods of Srebarna Nature Reserve, North-Eastern Bulgaria (Gastropoda)
expand article infoIvailo Dedov, Vera Antonova
† Institute of Biodiversity and Ecosystem Research at the Bulgarian Academy of Sciences, Sofia, Bulgaria
Open Access

Abstract

We give the results from the first investigation focused on the land snail fauna in Srebarna Nature Reserve in Bulgaria. A total of 23 localities were studied and 27 species of terrestrial gastropods were found, 23 of which were new observations for the Reserve.

Keywords

Bulgaria, Srebarna Nature Reserve, terrestrial gastropods, fauna

Introduction

Srebarna Lake was declared as a protected site in 1942 and as a Nature Reserve in 1948. In 1998, according to the national nature protection legislation, it was classified as a “Managed Reserve”. In 1975, Srebarna Lake was also protected as a Wetland of International Importance under the Ramsar Convention and, in 1977, as a UNESCO Biosphere Reserve. In 1983, it was listed as World Natural and Cultural Heritage Site by UNESCO, and in 1989 the Lake was designated as European Important Bird Area (BG 033) by BirdLife International. Srebarna Lake was also included in Natura 2000 network in 2009 (http://www.ecolab.bas.bg, http://whc.unesco.org).

Srebarna is a hyper-euthrophic lake, located on the Bulgarian (right) bank of the Danube River between R.km 391 and R.km 393; UTM grid NJ 08. The Nature Reserve has a total surface area of 902.1 ha (Vasilev et al. 2012).

Until the recent study, no previous focused investigations had been carried out on terrestrial snails in the Reserve. Prokopich et al. (1970) reported the first land snails that functioned as intermediate hosts in their studies on cestodes: Cepaea vindobonensis, Helix lucorum, Monacha cartusiana and Succinea putris. Dedov (1998) found a total of seven species of land snails, adding three species to the previous observations: Fruticicola fruticum, Chondrula tridens and Xerolenta obvia (as Helicella candicans L. Pfeiffer, 1841).

Materials and methods

In total, 23 localities were studied (Table 1). The terrestrial gastropods were collected by hand and soil samples were taken by I. Dedov (12 – 14.VI.2014) and V. Antonova (19 – 20.VII.2014). The material was stored in 70% ethanol or as dry shells. The species determination was done according to Damyanov and Likharev (1975) and Welter-Schultes (2012). The material is stored in the collection of I. Dedov in the Institute of Biodiversity and Ecosystem Research at the Bulgarian Academy of Sciences (IBER - BAS).

Studied localities in Srebarna Nature Reserve.

Coordinates

Locality

Date

Species

1

44.0949 27.0639

village Srebarna,  on stone fence

12-13.06.2014

Chondrula tridens

2

44.0992 27.0648

village Srebarna,  yard of IBER house

12-15.06.2014

Cepaea vindobonensis, Deroceras cf. reticulatum, Helix pomatia, Limacus flavus, Monacha carascaloides, Tandonia cf. kusceri, Xerolenta obvia

3

44.09339 27.06393

village Srebarna, meadows near roads in the village

12-15.06.2014

Cepaea vindobonensis, Helix pomatia, Monacha carascaloides, Xerolenta obvia

4

44.10314 27.06285

Srebarna Reserve, buffer zone, meadows  and bushes

13.06.2014

Helix pomatia, Monacha carascaloides, Xerolenta obvia

5

44.10302 27.06354

Srebarna Reserve, buffer zone, meadow near lake

13.06.2014

Cepaea vindobonensis, Helix pomatia, Monacha carascaloides

6

44.10738 27.05965

Srebarna Reserve, buffer zone, meadow  and bushes

13.06.2014

Cepaea vindobonensis, Helix pomatia, Monacha carascaloides

7

44.10758 27.05853

Srebarna Reserve, buffer zone, meadow and bushes

13.06.2014

Cepaea vindobonensis

8

44.11252 27.05658

Srebarna Reserve, buffer zone, meadow and bushes

13.06.2014

Helix pomatia, Monacha carascaloides

9

44.12067 27.06315

Srebarna Reserve, buffer zone, meadow

13.06.2014

Zebrina detrita

10

44.13043 27.06131

Srebarna Reserve, buffer zone, open terrain near Danube

13.06.2014

Cepaea vindobonensis, Helix pomatia

11

44.12875 27.06027

Srebarna Reserve, buffer zone, forest

13.06.2014

Acanthinula aculeata, Cecilioides acicula, Cepaea vindobonensis, Chondrula microtragus, Helix pomatia, Laciniaria plicata, Lindholmiola girva, Monacha carascaloides, Oxyloma cf. elegans, Pomatias elegans, Punctum pygmaeum, Trochulus hispidus, Truncatellina cylindrica, Truncatellina rothi, Vallonia costata, Vallonia enniensis, Vallonia excentrica, Vallonia pulchella, Xerolenta obvia, Zebrina detrita

12

44.08833 27.06701

Srebarna Reserve, buffer zone, meadow and bushes

14.06.2014

Cepaea vindobonensis, Helix pomatia, Monacha carascaloides, Xerolenta obvia

13

44.08865 27.06411

Srebarna Reserve, buffer zone, meadow and bushes

14.06.2014

Cepaea vindobonensis, Helix pomatia, Monacha carascaloides, Xerolenta obvia

14

44.08939 27.07399

Srebarna Reserve, buffer zone, meadow and bushes

14.06.2014

Cepaea vindobonensis, Helix pomatia, Monacha carascaloides, Xerolenta obvia

15

44.08937 27.06819

Srebarna Reserve, buffer zone, forest

14.06.2014

Chondrula tridens, Tandonia cf. kusceri, Truncatellina cylindrica, Vallonia costata, Vallonia cf. excentrica, Vallonia pulchella

16

44.08802 27.06490

Srebarna Reserve, buffer zone, cane near the water, single acacias

19.07.2014

Monachoides incarnatus, Oxyloma cf. elegans, Tandonia cf. kusceri

17

44.09689 27.09480

Srebarna Reserve, buffer zone, shrubs near road, deciduous forest ecotone

19.07.2014

Pomatias elegans

18

44.09999 27.09350

Srebarna Reserve, buffer zone, open terrain near gazebo

19.07.2014

Chondrula microtragus

19

44.10249 27.09153

Srebarna Reserve, buffer zone, acacias' forest

19.07.2014

Aegopinella minor, Lindholmiola girva, Oxychilus sp. (only juvenile specimens)

20

44.10766 27.08478

Srebarna Reserve, buffer zone, coniferous forest (Pinus nigra)

19.07.2014

Aegopinella minor

21

44.11780 27.0797

Srebarna Reserve, buffer zone, shrubs

19.07.2014

Zebrina detrita

22

44.13167 27.08780

Srebarna Reserve, buffer zone, bank of the Danube river, northern Gateway

19.07.2014

Oxyloma cf. elegans

23

44.09623 27.07008

Srebarna Reserve, buffer zone, grasses near lake shore (near the village)

20.07.2014

Chondrula tridens

Checklist of terrestrial gastropods

Acanthinula aculeata (O.F. Muller 1774)

Material   Download as CSV 
  1. scientificName: Acanthinula aculeata (O.F. Muller 1774); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Valloniidae; genus: Acanthinula; scientificNameAuthorship: (O.F. Muller 1774); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: Deciduous forest; sex: hermaphrodite; lifeStage: adult; identificationID: BG1620

Aegopinella minor (Stabile 1864)

Materials   Download as CSV 
  1. scientificName: Aegopinella minor (Stabile 1864); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Oxychilidae; genus: Aegopinella; scientificNameAuthorship: (Stabile 1864); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 19; decimalLatitude: 44.10249; decimalLongitude: 27.09153; georeferencedBy: Garmin 60 CS; eventDate: 07-19-14; habitat: Deciduous forest; sex: hermaphrodite; lifeStage: adult; identificationID: BG1628
  2. scientificName: Aegopinella minor (Stabile 1864); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Oxychilidae; genus: Aegopinella; scientificNameAuthorship: (Stabile 1864); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 20; decimalLatitude: 44.10766; decimalLongitude: 27.08478; georeferencedBy: Garmin 60 CS; eventDate: 07-19-14; habitat: Coniferous forest (Pinus nigra); sex: hermaphrodite; lifeStage: adult; identificationID: BG1629

Cecilioides acicula (O.F. Muller 1774)

Material   Download as CSV 
  1. scientificName: Cecilioides acicula (O.F. Muller 1774); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Ferussaciidae; genus: Cecilioides; scientificNameAuthorship: (O.F. Muller 1774); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: Deciduous forest; sex: hermaphrodite; lifeStage: adult; identificationID: BG1620

Cepaea vindobonensis (C. Pfeiffer 1828)

Materials   Download as CSV 
  1. scientificName: Cepaea vindobonensis (C. Pfeiffer 1828); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Cepaea; scientificNameAuthorship: (C. Pfeiffer 1828); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 2; decimalLatitude: 44.0992; decimalLongitude: 27.0648; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: Yards and hedges; sex: hermaphrodite; lifeStage: adult; identificationID: BG1611
  2. scientificName: Cepaea vindobonensis (C. Pfeiffer 1828); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Cepaea; scientificNameAuthorship: (C. Pfeiffer 1828); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 3; decimalLatitude: 44.09339; decimalLongitude: 27.06393; georeferencedBy: Garmin 60 CS; eventDate: 06-15-14; habitat: meadows near roads in the village; sex: hermaphrodite; lifeStage: adult; identificationID: BG1612
  3. scientificName: Cepaea vindobonensis (C. Pfeiffer 1828); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Cepaea; scientificNameAuthorship: (C. Pfeiffer 1828); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 5; decimalLatitude: 44.10302; decimalLongitude: 27.06354; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: meadow near Srebarna lake; sex: hermaphrodite; lifeStage: adult; identificationID: BG1614
  4. scientificName: Cepaea vindobonensis (C. Pfeiffer 1828); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Cepaea; scientificNameAuthorship: (C. Pfeiffer 1828); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 6; decimalLatitude: 44.10738; decimalLongitude: 27.05965; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1615
  5. scientificName: Cepaea vindobonensis (C. Pfeiffer 1828); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Cepaea; scientificNameAuthorship: (C. Pfeiffer 1828); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 7; decimalLatitude: 44.10758; decimalLongitude: 27.05853; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1616
  6. scientificName: Cepaea vindobonensis (C. Pfeiffer 1828); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Cepaea; scientificNameAuthorship: (C. Pfeiffer 1828); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 10; decimalLatitude: 44.13043; decimalLongitude: 27.06131; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: open areas near Danube revier; sex: hermaphrodite; lifeStage: adult; identificationID: BG1619
  7. scientificName: Cepaea vindobonensis (C. Pfeiffer 1828); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Cepaea; scientificNameAuthorship: (C. Pfeiffer 1828); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: (Deciduous forest); sex: hermaphrodite; lifeStage: adult; identificationID: BG1620
  8. scientificName: Cepaea vindobonensis (C. Pfeiffer 1828); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Cepaea; scientificNameAuthorship: (C. Pfeiffer 1828); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 12; decimalLatitude: 44.08833; decimalLongitude: 27.06701; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1621
  9. scientificName: Cepaea vindobonensis (C. Pfeiffer 1828); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Cepaea; scientificNameAuthorship: (C. Pfeiffer 1828); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 13; decimalLatitude: 44.08865; decimalLongitude: 27.06411; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1622
  10. scientificName: Cepaea vindobonensis (C. Pfeiffer 1828); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Cepaea; scientificNameAuthorship: (C. Pfeiffer 1828); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 14; decimalLatitude: 44.08939; decimalLongitude: 27.07399; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1623
Conservation status: 
IUCN: LC

Chondrula microtragus (Rossmassler 1839)

Materials   Download as CSV 
  1. scientificName: Chondrula microtragus (Rossmassler 1839); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Enidae; genus: Chondrula; scientificNameAuthorship: (Rossmassler 1839); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: Meadows and open areas; sex: hermaphrodite; lifeStage: adult; identificationID: BG1620
  2. scientificName: Chondrula microtragus (Rossmassler 1839); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Enidae; genus: Chondrula; scientificNameAuthorship: (Rossmassler 1839); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 18; decimalLatitude: 44.09999; decimalLongitude: 27.09350; georeferencedBy: Garmin 60 CS; eventDate: 07-19-14; habitat: Meadows and open areas; sex: hermaphrodite; lifeStage: adult; identificationID: BG1627
Conservation status: 
IUCN: LC

Chondrula tridens (O.F. Muller 1774)

Materials   Download as CSV 
  1. scientificName: Chondrula tridens (O.F. Muller 1774); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Enidae; genus: Chondrula; scientificNameAuthorship: (O.F. Muller 1774); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 1; decimalLatitude: 44.0949; decimalLongitude: 27.0639; georeferencedBy: Garmin 60 CS; eventDate: 06-12-14; habitat: Yards and hedges, stone fence; sex: hermaphrodite; lifeStage: adult; identificationID: BG1610
  2. scientificName: Chondrula tridens (O.F. Muller 1774); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Enidae; genus: Chondrula; scientificNameAuthorship: (O.F. Muller 1774); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 15; decimalLatitude: 44.08937; decimalLongitude: 27.06819; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: (Deciduous forest); sex: hermaphrodite; lifeStage: adult; identificationID: BG1624
  3. scientificName: Chondrula tridens (O.F. Muller 1774); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Enidae; genus: Chondrula; scientificNameAuthorship: (O.F. Muller 1774); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 23; decimalLatitude: 44.09623; decimalLongitude: 27.07008; georeferencedBy: Garmin 60 CS; eventDate: 07-20-14; habitat: meadows and open areas; sex: hermaphrodite; lifeStage: adult; identificationID: BG1632

Deroceras reticulatum (O.F. Muller 1774)

Material   Download as CSV 
  1. scientificName: Deroceras af. reticulatum (O.F. Muller 1774); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Agriolimacidae; genus: Deroceras; scientificNameAuthorship: (O.F. Muller 1774); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 2; decimalLatitude: 44.0992; decimalLongitude: 27.0648; georeferencedBy: Garmin 60 CS; eventDate: 06-12-14; habitat: Yards and hedges; sex: hermaphrodite; lifeStage: adult; identificationID: BG1611

Helix pomatia Linnaeus 1758

Materials   Download as CSV 
  1. scientificName: Helix pomatia Linnaeus 1748; kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Helix; scientificNameAuthorship: Linnaeus 1758; continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 2; decimalLatitude: 44.0992; decimalLongitude: 27.0648; georeferencedBy: Garmin 60 CS; eventDate: 06-12-14; habitat: Meadows and open areas,; sex: hermaphrodite; lifeStage: adult; identificationID: BG1611
  2. scientificName: Helix pomatia Linnaeus 1748; kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Helix; scientificNameAuthorship: Linnaeus 1758; continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 3; decimalLatitude: 44.09339; decimalLongitude: 27.06393; georeferencedBy: Garmin 60 CS; eventDate: 06-12-14; habitat: meadows near roads in the village; sex: hermaphrodite; lifeStage: adult; identificationID: BG1612
  3. scientificName: Helix pomatia Linnaeus 1748; kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Helix; scientificNameAuthorship: Linnaeus 1758; continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 4; decimalLatitude: 44.10314; decimalLongitude: 27.06285; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1613
  4. scientificName: Helix pomatia Linnaeus 1748; kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Helix; scientificNameAuthorship: Linnaeus 1758; continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 5; decimalLatitude: 44.10302; decimalLongitude: 27.06354; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: meadow near lake; sex: hermaphrodite; lifeStage: adult; identificationID: BG1614
  5. scientificName: Helix pomatia Linnaeus 1748; kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Helix; scientificNameAuthorship: Linnaeus 1758; continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 6; decimalLatitude: 44.10738; decimalLongitude: 27.05965; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1615
  6. scientificName: Helix pomatia Linnaeus 1748; kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Helix; scientificNameAuthorship: Linnaeus 1758; continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 8; decimalLatitude: 44.11252; decimalLongitude: 27.05658; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1617
  7. scientificName: Helix pomatia Linnaeus 1748; kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Helix; scientificNameAuthorship: Linnaeus 1758; continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 10; decimalLatitude: 44.13043; decimalLongitude: 27.06131; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: Meadows and open areas,; sex: hermaphrodite; lifeStage: adult; identificationID: BG1619
  8. scientificName: Helix pomatia Linnaeus 1748; kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Helix; scientificNameAuthorship: Linnaeus 1758; continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: Deciduous forest; sex: hermaphrodite; lifeStage: adult; identificationID: BG1620
  9. scientificName: Helix pomatia Linnaeus 1748; kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Helix; scientificNameAuthorship: Linnaeus 1758; continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 12; decimalLatitude: 44.08833; decimalLongitude: 27.06701; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1621
  10. scientificName: Helix pomatia Linnaeus 1748; kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Helix; scientificNameAuthorship: Linnaeus 1758; continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 13; decimalLatitude: 44.08865; decimalLongitude: 27.06411; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1622
  11. scientificName: Helix pomatia Linnaeus 1748; kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicidae; genus: Helix; scientificNameAuthorship: Linnaeus 1758; continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 14; decimalLatitude: 44.08939; decimalLongitude: 27.07399; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1623
Conservation status: 
IUCN: LC, BSG, ZBR-41

Laciniaria plicata (Draparnaud 1801)

Material   Download as CSV 
  1. scientificName: Laciniaria plicata (Draparnaud 1801); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Clausiliidae; genus: Laciniaria; scientificNameAuthorship: (Draparnaud 1801); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: Deciduous forest; sex: hermaphrodite; lifeStage: adult; identificationID: BG1620

Limacus flavus (Linnaeus 1758)

Material   Download as CSV 
  1. scientificName: Limacus flavus (Linnaeus 1758); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Limacidae; genus: Limacus; scientificNameAuthorship: (Linnaeus 1758); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 2; decimalLatitude: 44.0992; decimalLongitude: 27.0648; georeferencedBy: Garmin 60 CS; eventDate: 06-12-14; habitat: Yards and hedges; sex: hermaphrodite; lifeStage: adult; identificationID: BG1611

Lindholmiola girva (Frivaldsky 1835)

Materials   Download as CSV 
  1. scientificName: Lindholmiola girva (Frivaldsky 1835); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicodontidae; genus: Lindholmiola; scientificNameAuthorship: (Frivaldsky 1835); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: Deciduous forest; sex: hermaphrodite; lifeStage: adult; identificationID: BG1620
  2. scientificName: Lindholmiola girva (Frivaldsky 1835); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Helicodontidae; genus: Lindholmiola; scientificNameAuthorship: (Frivaldsky 1835); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 19; decimalLatitude: 44.10249; decimalLongitude: 27.09153; georeferencedBy: Garmin 60 CS; eventDate: 07-19-14; habitat: Deciduous forest; sex: hermaphrodite; lifeStage: adult; identificationID: BG1628
Conservation status: 
IUCN: LC

Monacha carascaloides (Bourguignat 1855)

Materials   Download as CSV 
  1. scientificName: Monacha carascaloides (Bourguignat 1855); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Monacha; scientificNameAuthorship: (Bourguignat 1855); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 2; decimalLatitude: 44.0992; decimalLongitude: 27.0648; georeferencedBy: Garmin 60 CS; eventDate: 06-12-14; habitat: Meadows and open areas,; sex: hermaphrodite; lifeStage: adult; identificationID: BG1611
  2. scientificName: Monacha carascaloides (Bourguignat 1855); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Monacha; scientificNameAuthorship: (Bourguignat 1855); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 3; decimalLatitude: 44.09339; decimalLongitude: 27.06393; georeferencedBy: Garmin 60 CS; eventDate: 06-12-14; habitat: meadows near roads in the village; sex: hermaphrodite; lifeStage: adult; identificationID: BG1612
  3. scientificName: Monacha carascaloides (Bourguignat 1855); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Monacha; scientificNameAuthorship: (Bourguignat 1855); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 4; decimalLatitude: 44.10314; decimalLongitude: 27.06285; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1613
  4. scientificName: Monacha carascaloides (Bourguignat 1855); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Monacha; scientificNameAuthorship: (Bourguignat 1855); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 5; decimalLatitude: 44.10302; decimalLongitude: 27.06354; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: meadow near lake; sex: hermaphrodite; lifeStage: adult; identificationID: BG1614
  5. scientificName: Monacha carascaloides (Bourguignat 1855); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Monacha; scientificNameAuthorship: (Bourguignat 1855); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 6; decimalLatitude: 44.10738; decimalLongitude: 27.05965; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1615
  6. scientificName: Monacha carascaloides (Bourguignat 1855); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Monacha; scientificNameAuthorship: (Bourguignat 1855); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 8; decimalLatitude: 44.11252; decimalLongitude: 27.05658; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1617
  7. scientificName: Monacha carascaloides (Bourguignat 1855); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Monacha; scientificNameAuthorship: (Bourguignat 1855); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: Deciduous forest; sex: hermaphrodite; lifeStage: adult; identificationID: BG1620
  8. scientificName: Monacha carascaloides (Bourguignat 1855); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Monacha; scientificNameAuthorship: (Bourguignat 1855); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 12; decimalLatitude: 44.08833; decimalLongitude: 27.06701; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1621
  9. scientificName: Monacha carascaloides (Bourguignat 1855); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Monacha; scientificNameAuthorship: (Bourguignat 1855); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 13; decimalLatitude: 44.08865; decimalLongitude: 27.06411; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1622
  10. scientificName: Monacha carascaloides (Bourguignat 1855); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Monacha; scientificNameAuthorship: (Bourguignat 1855); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 14; decimalLatitude: 44.08939; decimalLongitude: 27.07399; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1623
Conservation status: 
IUCN: LC

Monachoides incarnates (O.F. Muller 1774)

Material   Download as CSV 
  1. scientificName: Monachoides incarnates (O.F. Muller 1774); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Monachoides; scientificNameAuthorship: (O.F. Muller 1774); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 16; decimalLatitude: 44.08802; decimalLongitude: 27.06490; georeferencedBy: Garmin 60 CS; eventDate: 07-19-14; habitat: (Reed with single Acacia sp. trees); sex: hermaphrodite; lifeStage: adult; identificationID: BG1625
Conservation status: 
IUCN: LC

Oxychilus sp.

Material   Download as CSV 
  1. scientificName: Oxychilus sp.; kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Oxychilidae; genus: Oxychilus; continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 19; decimalLatitude: 44.10249; decimalLongitude: 27.09153; georeferencedBy: Garmin 60 CS; eventDate: 07-19-14; habitat: Deciduous forest; sex: hermaphrodite; lifeStage: juvenile; identificationID: BG1628

Oxyloma elegans (Risso 1826)

Materials   Download as CSV 
  1. scientificName: Oxyloma cf. elegans (Risso 1826); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Succineidae; genus: Oxyloma; scientificNameAuthorship: (Risso 1826); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: (Deciduous forest); sex: hermaphrodite; lifeStage: adult; identificationID: BG1620
  2. scientificName: Oxyloma cf. elegans (Risso 1826); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Succineidae; genus: Oxyloma; scientificNameAuthorship: (Risso 1826); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 16; decimalLatitude: 44.08802; decimalLongitude: 27.06490; georeferencedBy: Garmin 60 CS; eventDate: 07-19-14; habitat: Reed with single Acacia sp. trees; sex: hermaphrodite; lifeStage: adult; identificationID: BG1625
  3. scientificName: Oxyloma cf. elegans (Risso 1826); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Succineidae; genus: Oxyloma; scientificNameAuthorship: (Risso 1826); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 22; decimalLatitude: 44.13167; decimalLongitude: 27.08780; georeferencedBy: Garmin 60 CS; eventDate: 07-19-14; habitat: Danube river’s bank; sex: hermaphrodite; lifeStage: adult; identificationID: BG1631

Pomatias elegans (O.F. Muller 1774)

Materials   Download as CSV 
  1. scientificName: Pomatias elegans (O.F. Muller 1774); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Neotaenioglossa; family: Pomatiidae; genus: Pomatias; scientificNameAuthorship: (O.F. Muller 1774); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: Deciduous forest; lifeStage: adult; identificationID: BG1620
  2. scientificName: Pomatias elegans (O.F. Muller 1774); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Neotaenioglossa; family: Pomatiidae; genus: Pomatias; scientificNameAuthorship: (O.F. Muller 1774); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 17; decimalLatitude: 44.09689; decimalLongitude: 27.09480; georeferencedBy: Garmin 60 CS; eventDate: 07-19-14; habitat: Bushes in the ecotone of deciduous forest; lifeStage: adult; identificationID: BG1626

Punctum pygmaeum (Draparnaud 1801)

Material   Download as CSV 
  1. scientificName: Punctum pygmaeum (Draparnaud 1801); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Punctidae; genus: Punctum; scientificNameAuthorship: (Draparnaud 1801); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: Deciduous forest; sex: hermaphrodite; lifeStage: adult; identificationID: BG1620

Tandonia kusceri (H. Wagner 1931)

Materials   Download as CSV 
  1. scientificName: Tandonia af. kusceri (H. Wagner 1931); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Milacidae; genus: Tandonia; scientificNameAuthorship: (H. Wagner 1931); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 2; decimalLatitude: 44.0992; decimalLongitude: 27.0648; georeferencedBy: Garmin 60 CS; eventDate: 06-12-14; habitat: Yards and hedges; sex: hermaphrodite; lifeStage: adult; identificationID: BG1611
  2. scientificName: Tandonia af. kusceri (H. Wagner 1931); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Milacidae; genus: Tandonia; scientificNameAuthorship: (H. Wagner 1931); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 15; decimalLatitude: 44.08937; decimalLongitude: 27.06819; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: (Deciduous forest); sex: hermaphrodite; lifeStage: adult; identificationID: BG1624
  3. scientificName: Tandonia af. kusceri (H. Wagner 1931); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Milacidae; genus: Tandonia; scientificNameAuthorship: (H. Wagner 1931); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 16; decimalLatitude: 44.08802; decimalLongitude: 27.06490; georeferencedBy: Garmin 60 CS; eventDate: 07-19-14; habitat: Reed with single Acacia sp. trees; sex: hermaphrodite; lifeStage: adult; identificationID: BG1625

Trochulus hispidus (Linnaeus 1758)

Material   Download as CSV 
  1. scientificName: Trochulus hispidus (Linnaeus 1758); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Trochulus; scientificNameAuthorship: (Linnaeus 1758); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: Deciduous forest; sex: hermaphrodite; lifeStage: adult; identificationID: BG1620
Conservation status: 
IUCN: LC

Truncatellina cylindrica (A. Ferussac 1807)

Materials   Download as CSV 
  1. scientificName: Truncatellina cylindrica (A. Ferussac 1807); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Vertiginidae; genus: Truncatellina; scientificNameAuthorship: (A. Ferussac 1807); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: Deciduous forest; sex: hermaphrodite; lifeStage: adult; identificationID: BG1620
  2. scientificName: Truncatellina cylindrica (A. Ferussac 1807); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Vertiginidae; genus: Truncatellina; scientificNameAuthorship: (A. Ferussac 1807); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 15; decimalLatitude: 44.08937; decimalLongitude: 27.06819; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: Deciduous forest; sex: hermaphrodite; lifeStage: adult; identificationID: BG1624

Truncatellina rothi (Reinhardt 1916)

Material   Download as CSV 
  1. scientificName: Truncatellina rothi (Reinhardt 1916); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Vertiginidae; genus: Truncatellina; scientificNameAuthorship: (Reinhardt 1916); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: Deciduous forest; sex: hermaphrodite; lifeStage: adult; identificationID: BG1620
Conservation status: 
IUCN: LC

Vallonia costata (O.F. Muller 1774)

Materials   Download as CSV 
  1. scientificName: Vallonia costata (O.F. Muller 1774); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Valloniidae; genus: Vallonia; scientificNameAuthorship: (O.F. Muller 1774); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: (Deciduous forest); sex: hermaphrodite; lifeStage: adult; identificationID: BG1620
  2. scientificName: Vallonia costata (O.F. Muller 1774); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Valloniidae; genus: Vallonia; scientificNameAuthorship: (O.F. Muller 1774); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 15; decimalLatitude: 44.08937; decimalLongitude: 27.06819; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: (Deciduous forest); sex: hermaphrodite; lifeStage: adult; identificationID: BG1624

Vallonia enniensis (Gredler 1856)

Material   Download as CSV 
  1. scientificName: Vallonia enniensis (Gredler 1856); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Valloniidae; genus: Vallonia; scientificNameAuthorship: (Gredler 1856); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: (Deciduous forest); sex: hermaphrodite; lifeStage: adult; identificationID: BG1620
Conservation status: 
IUCN: DD

Vallonia excentrica Sterki 1893

Materials   Download as CSV 
  1. scientificName: Vallonia excentrica Sterki 1893; kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Valloniidae; genus: Vallonia; scientificNameAuthorship: Sterki 1893; continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: (Deciduous forest); sex: hermaphrodite; lifeStage: adult; identificationID: BG1620
  2. scientificName: Vallonia excentrica Sterki 1893; kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Valloniidae; genus: Vallonia; scientificNameAuthorship: Sterki 1893; continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 15; decimalLatitude: 44.08937; decimalLongitude: 27.06819; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: (Deciduous forest); sex: hermaphrodite; lifeStage: adult; identificationID: BG1624

Vallonia pulchella (O.F. Muller 1774)

Materials   Download as CSV 
  1. scientificName: Vallonia pulchella (O.F. Muller 1774); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Valloniidae; genus: Vallonia; scientificNameAuthorship: (O.F. Muller 1774); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: (Deciduous forest); sex: hermaphrodite; lifeStage: adult; identificationID: BG1620
  2. scientificName: Vallonia pulchella (O.F. Muller 1774); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Valloniidae; genus: Vallonia; scientificNameAuthorship: (O.F. Muller 1774); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 15; decimalLatitude: 44.08937; decimalLongitude: 27.06819; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: (Deciduous forest); sex: hermaphrodite; lifeStage: adult; identificationID: BG1624

Xerolenta obvia (Menke 1828)

Materials   Download as CSV 
  1. scientificName: Xerolenta obvia (Menke 1828); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Xerolenta; scientificNameAuthorship: (Menke 1828); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 2; decimalLatitude: 44.0992; decimalLongitude: 27.0648; georeferencedBy: Garmin 60 CS; eventDate: 06-12-14; habitat: Meadows and open areas,; sex: hermaphrodite; lifeStage: adult; identificationID: BG1611
  2. scientificName: Xerolenta obvia (Menke 1828); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Xerolenta; scientificNameAuthorship: (Menke 1828); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 3; decimalLatitude: 44.09339; decimalLongitude: 27.06393; georeferencedBy: Garmin 60 CS; eventDate: 06-12-14; habitat: meadows near roads in the village; sex: hermaphrodite; lifeStage: adult; identificationID: BG1612
  3. scientificName: Xerolenta obvia (Menke 1828); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Xerolenta; scientificNameAuthorship: (Menke 1828); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 4; decimalLatitude: 44.10314; decimalLongitude: 27.06285; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1613
  4. scientificName: Xerolenta obvia (Menke 1828); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Xerolenta; scientificNameAuthorship: (Menke 1828); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: (Deciduous forest); sex: hermaphrodite; lifeStage: adult; identificationID: BG1620
  5. scientificName: Xerolenta obvia (Menke 1828); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Xerolenta; scientificNameAuthorship: (Menke 1828); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 12; decimalLatitude: 44.08833; decimalLongitude: 27.06701; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1621
  6. scientificName: Xerolenta obvia (Menke 1828); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Xerolenta; scientificNameAuthorship: (Menke 1828); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 13; decimalLatitude: 44.08865; decimalLongitude: 27.06411; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1622
  7. scientificName: Xerolenta obvia (Menke 1828); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Hygromiidae; genus: Xerolenta; scientificNameAuthorship: (Menke 1828); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 14; decimalLatitude: 44.08939; decimalLongitude: 27.07399; georeferencedBy: Garmin 60 CS; eventDate: 06-14-14; habitat: meadows and bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1623

Zebrina detrita (O.F. Muller 1774)

Materials   Download as CSV 
  1. scientificName: Zebrina detrita (O.F. Muller 1774); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Enidae; genus: Zebrina; scientificNameAuthorship: (O.F. Muller 1774); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 9; decimalLatitude: 44.12067; decimalLongitude: 27.06315; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: meadows and open areas; sex: hermaphrodite; lifeStage: adult; identificationID: BG1618
  2. scientificName: Zebrina detrita (O.F. Muller 1774); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Enidae; genus: Zebrina; scientificNameAuthorship: (O.F. Muller 1774); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 11; decimalLatitude: 44.12875; decimalLongitude: 27.06027; georeferencedBy: Garmin 60 CS; eventDate: 06-13-14; habitat: (Deciduous forest); sex: hermaphrodite; lifeStage: adult; identificationID: BG1620
  3. scientificName: Zebrina detrita (O.F. Muller 1774); kingdom: Animalia; phylum: Mollusca; class: Gastropoda; order: Pulmonata; family: Enidae; genus: Zebrina; scientificNameAuthorship: (O.F. Muller 1774); continent: Europe; country: Bulgaria; municipality: Silistra; locality: Srebarna Nature Reserve; locationRemarks: 21; decimalLatitude: 44.11780; decimalLongitude: 27.0797; georeferencedBy: Garmin 60 CS; eventDate: 07-19-14; habitat: Bushes; sex: hermaphrodite; lifeStage: adult; identificationID: BG1630

Discussion

During the recent research in the Srebarna protected area, 27 land snails species were found: 23 of them were new species records for the reserve and four had been documented in the area previously. F. fruticum (reported by Dedov 1998) and H. lucorum (published by Prokopich et al. 1970) were not found. Anatomical and conchological investigation of specimens identified as Monacha, and which fit the description of M. cartusiana of Prokopich et al. (1970), showed the specimens to be M. carascaloides (Fig. 1).

Figure 1.

Above: Helix pomatia Linnaeus 1758 (diameter of shell 41 mm); below: Monacha carascaloides (Bourguignat 1855) (diameter of shell 16 mm), Sreburna reserve, buffer zone, meadow and bushes.

The species Oxyloma cf. elegans needs further confirmation by anatomical characteristics. During the field work, adult specimens were found only as empty shells. According to the key of Damyanov and Likharev (1975), the height of the mature shells (about 22.5 мм) corresponds to S. putris (see Dedov 1998), but the body color of the single juvenile specimen found alive is dark-patched pigmented as in the genus Oxyloma (Welter-Schultes 2012). Most probably both Oxyloma cf. elegans and S. putris occur in the reserve.

The species found in most localities were Helix pomatia (11 sites, Fig. 1), C. vindobonensis (10 sites), M. carascaloides (10 sites) and X. obvia (7 sites). The recorded species belong to 15 families, the most species rich of which are Valloniidae (5 species), Hygromiidae (4) and Enidae (3).

Of all the species recorded, eight have been evaluated in the “IUCN red list of threatened species 2014” to belong to the category LC (Least Concern): C. vindobonensis, Ch. microtragus, H. pomatia, L. girva, M. incarnatus, M. carascaloides, T. hispidus, T. rothi and one - (V. enniensis) - in the category DD (Data Deficient). Another two species (H. lucorum and H. pomatia) are mentioned in the Bulgarian conservation legislation, as they are included in Section III (Regulated use of plant and animal species), Art. 41 (1), Annex 4 of “Biodiversity Act” (State Gazette 2002).

The deciduous forests in the buffer zone of Srebarna Reserve were found to be richer in gastropod species than the reserve itself (a total of 24 species, 13 of which were found only in this habitat). These were meso-xerophyle and xerophyle species which live in the forest ecotone (C. vindobonensis, Ch. microtragus, Ch. tridens, M. carascaloides, V. costata, V. excentrica, V. pulchella, X. obvia, Z. detrita) or meso-hygrophyle and hygrophyle species, occasionally found into the samples (V. enniensis, Succineidae). Eight species of conservation significance were found in the deciduous forests (C. vindobonensis, Ch. microtragus, H. pomatia, L. girva, M. carascaloides, M. incarnatus, Tr. hispidus and Tr. rothi).

In the open and urban areas, nine species were found and two of them were of conservation significance (C. vindobonensis and H. pomatia). The slug D. cf. reticulatum was found only in open habitats.

Acknowledgements

The recent study was part of the project DIR-5113325-6-96 of the Bulgarian Ministry of Environment and Water, Operational Programme Environment 2007-2013, RIEW Russe.

The authors like to thank Anu Veijalainen for the linguistic corrections. We are grateful to the reviewers for helpful remarks.

References