Biodiversity Data Journal :
Taxonomic Paper
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Corresponding author:
Academic editor: Christos Arvanitidis
Received: 28 Sep 2016 | Accepted: 17 Oct 2016 | Published: 01 Nov 2016
© 2016 Vasilis Gerovasileiou, Antonietta Rosso
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Gerovasileiou V, Rosso A (2016) Marine Bryozoa of Greece: an annotated checklist. Biodiversity Data Journal 4: e10672. https://doi.org/10.3897/BDJ.4.e10672
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Until today, a complete checklist of Bryozoa of the Greek seas had never been published and species records were scattered in several taxonomic and ecological studies. The aim of this paper is to produce a first checklist of marine bryozoan species of Greece, in the framework of the Greek Taxon Information System (GTIS) initiative of the LifeWatchGreece Research Infrastructure (ESFRI), by reviewing the existing literature and following the recent trends in the taxonomy of this group.
The marine bryozoan fauna of Greece comprises 237 species, classified in 127 genera, 66 families, 3 orders, and 2 classes. The vast majority belongs to the class Gymnolaemata (177 Cheilostomatida and 21 Ctenostomatida), while the remaining 39 species are Stenolaemata (all Cyclostomatida). Among these species, 12 are considered endemic to the eastern Mediterranean, while another 12 species are non-indigenous.
Biodiversity, Aegean Sea, Sea of Crete, Levantine Sea, Ionian Sea, Eastern Mediterranean.
The Mediterranean bryozoan fauna represents about 9.6% of the known global diversity of Bryozoa (
Sporadic records of bryozoans from the Aegean Sea can be found in old taxonomic studies, including the descriptions of the cheilostome species Calpensia nobilis, Hippaliosina depressa and Watersipora cucullata from this marine region (
More recently, few taxonomic and ecological studies have focused on the bryozoan fauna of Greece (e.g.
The checklist presented in this paper was compiled in the framework of the Greek Taxon Information System (GTIS), an initiative of the LifeWatchGreece Research e-Infrastructure aiming to produce a complete inventory of the known biodiversity of Greece (
In the absence of type material, the validity of S. rudis has been questioned by
Synonym valid for Calyptotheca triarmata Hayward, 1974 (see
Schizomavella linearis mamillata
This taxon corresponds to a complex of species (
Mediterranean specimens of Monoporella nodulifera and M. fimbriata carinifera actually belong to this species, as suggested by
Smittipora is a synonym of Rectonychocella (see
Synonym valid for R. septentrionalis (see
See
The use of the name D. obelius for this species has been proposed by
See
See
See
The bryozoan fauna of the Greek seas consists of 237 species, classified into 127 genera, 66 families, 3 orders, and 2 classes (Suppl. material
All species included in the checklist are recognized in the World List of Bryozoa and the World Register of Marine Species, except for three of them. These are: Idmidronea triforis (Heller, 1967) and I. coerulea Harmelin, 1976, allocated within the genus Idmidronea Canu and Bassler, 1920 and not Exidmonea David, Mongereau and Pouyet, 1972; 'Microecia' occulta (Harmelin, 1976), provisionally left in its former allocation because the characters of the species differ from those of the genus Oncousoecia Canu, 1918 that has been suggested for its allocation (although Microecia Canu, 1918 is recognized as a synonym of Plagioecia Canu, 1918). The taxon Rhynchozoon sp. 1 sensu Hayward, 1974 described from Chios Island, was retained in the checklist following extensive lists by
A number of taxa were omitted from the present checklist (Table
Questionable taxa reported from Greece not included in the present checklist.
Species and authority as given in the source |
First report from Greece |
Remarks |
Adeonella polystomella (Reuss, 1847) |
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Omitted following |
Cribrilina annulata (Fabricius, 1780) |
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Questionable (see |
Cribrilina punctata (Hassall, 1841) |
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Possibly confused with Collarina balzaci (see |
Escharina porosa (Smitt) |
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Removed after the splitting of a previous complex of species (see |
Hippodiplosia delicatula Manzoni |
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Possibly an exclusively fossil species. |
Microecia suborbicularis (Hincks) |
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The material for this species needs further examination (see |
Monoporella fimbriata carinifera Canu & Bassler, 1929 and M. nodulifera (Hincks) |
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Replaced by M. bouchardii following |
Parasmittina nitida Verrill |
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Species restricted to the SW Atlantic ( |
Pentapora foliacea |
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Species restricted to the North Atlantic (see |
? Rhyncozoon lobulatum (Waters, 1879) |
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This species name is likely to refer to an aged portion of R. digitatum (see |
Schizomavella gardensis |
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A fossil species described from the Burdigalian of France. |
Scrupocellaria reptans |
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Species restricted to the British Isles (see |
Sertella scbuermanni Jullien |
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This fossil species is reported only from its type locality (Miocene of west Germany). |
Tricellaria peachii Osburn |
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Species restricted to the North Atlantic. Could be misidentified with Tricellaria inopinata. |
Tubulipora phalangea (Couch, 1844) |
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Species restricted to the Boreo-Arctic Atlantic Ocean (see |
Turbicellepora armata |
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This species is restricted to the North Atlantic. |
Turbicellepora redoutei (Audouin, 1826) |
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Species seemingly restricted to the Indo-Pacific. It was recorded only once in the Mediterranean. |
The bryozoan fauna of the Greek seas makes up 42.7% of the species, 59.9% of the genera and 71% of the families of the Mediterranean bryozoan fauna, specifically 41.7% of the Cheilostomatida, 36.8% of the Ctenostomatida and 52% of the Cyclostomatida species, based on the recent update by
Among the species reported from Greece, 12 are considered endemic to the eastern Mediterranean basin; these are the cheilostomes Adeonella pallasii, Calyptotheca rugosa, Cellepora posidoniae, Hippopodina ambita, Hippoporidra picardi, Monoporella bouchardii, Plesiocleidochasma mediterraneum, Reteporellina delicatula, Retevirgula akdenizae, Smittipora disjuncta, Therenia rosei and Turbicellepora camera. Of these, 5 species were first described from the island of Chios based on material collected by Hayward (i.e. C. rugosa, H. ambita, R. delicatula, T. rosei, and T. camera), H. picardi was described from the Gulf of Thessaloniki, while R. akdenizae was described from the Turkish coasts of the Aegean Sea. The cheilostome Hippaliosina depressa, which was described from the Aegean Sea, is considered more typical of the eastern Mediterranean basin, including the Sicily Strait, the western Ionian and south Adriatic seas (
Interestingly, three of the bryozoans recorded from Greece are typical of the North Atlantic (
The recent introduction of non-indigenous species, mostly lessepsian migrants, over the last decades, has considerably increased the number of bryozoans occurring in the Mediterranean Sea (
Bryozoans from the Greek seas were reported from a variety of habitats, including soft sediments, seagrass leaves and rhizomes, macroalgae, coralligenous concretions and, to a smaller extent, from marine caves. Further research on bryozoan diversity in understudied habitats, typically species-rich in bryozoans (e.g. marine caves and coralligenous beds), is expected to increase our knowledge, possibly revealing additional new and non-indigenous species.
This work was supported by the LifeWatchGreece infrastructure (MIS 384676), funded by the Greek Government under the General Secretariat of Research and Technology (GSRT), ESFRI Projects, National Strategic Reference Framework (NSRF). This is contribution number 420 of the Catania Palaeontological Research Group.
Taxonomic checklist of Bryozoa known to occur in the Greek seas.