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Biodiversity Data Journal :
Data Paper (Biosciences)
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Corresponding author: Paula Ribeiro Anunciação (paulaevel@gmail.com)
Academic editor: Dmitry Schigel
Received: 30 Aug 2025 | Accepted: 29 Sep 2025 | Published: 10 Nov 2025
© 2025 Paula Ribeiro Anunciação, André Batista Tavares, Maria Maldaner, Fernando Vaz-de-Mello, Milton Ribeiro, Raffael Ernst
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:
Ribeiro Anunciação P, Batista Tavares A, Maldaner M, Vaz-de-Mello FZ, Ribeiro M, Ernst R (2025) Atlantic Dung Beetle Traits: A comprehensive dataset of functional traits for dung beetles (Coleoptera, Scarabeidae, Scarabaeinae) in the Atlantic Forest. Biodiversity Data Journal 13: e170578. https://doi.org/10.3897/BDJ.13.e170578
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Functional traits offer critical insights into species performance, survival strategies and ecological interactions. However, the availability of comprehensive trait datasets remains limited, primarily due to the substantial effort required for field sampling and laboratory analysis. This constraint is particularly pronounced in biodiversity hotspots such as the Atlantic Forest, one of the most diverse and threatened biomes globally. The ATLANTIC DUNG BEETLE TRAITS dataset addresses part of this gap by compiling extensive morphological and ecological information for a key insect group in this biome. Dung beetles (Coleoptera, Scarabaeinae) play essential roles in nutrient cycling, secondary seed dispersal and soil aeration, but many species are increasingly threatened by habitat loss, fragmentation and other human-induced pressures.
The dataset includes 47 distinct traits for 1,398 individuals representing up to 385 taxa. Many traits were measured separately by sex and/or habitat to capture intraspecific variation, resulting in 107 trait records overall. It is organised into two main components:
Novel dataset – Includes 371 individuals from 72 taxa, with measurements for six continuous morphological traits (mean biomass, wing length, wing width, wing area, wing aspect ratio and wing loading) and four categorical ecological traits (body size, diet, relocation behaviour and diel activity), all recorded at the individual level.
Additionally, this dataset includes a set of high-resolution photographs of dung beetle wings from 355 individuals across 51 taxa. These images were used to derive key morphological measurements and are provided to support reproducibility and further research.
Published datasets – Include records for 1,027 individuals representing up to 357 taxa, including 210 taxonomically uncertain species. These datasets cover both individual- and species-level functional traits, totalling 46 traits compiled from 29 published studies conducted between 2011 and 2024.
This functional trait database offers a standardised, detailed resource to support macroecological, functional and conservation analyses, contributing to biodiversity assessment and management in the Atlantic Forest.
Tropical Forest, functional diversity, functional attributes, phylogenetic diversity, interspecific variation, intraspecific variation
Functional traits are species characteristics linked to performance and survival, such as morphological, physiological, phenological, behavioural and habitat attributes (
Dung beetles (Scarabaeidae, Scarabaeinae), with nearly 7,000 described species, illustrate this limitation, as information on their natural history and functional attributes remains incomplete (
The Brazilian Atlantic Forest, a global biodiversity hotspot, highlights the urgency of such data. Once widespread along Brazil’s eastern coast and extending into Paraguay and Argentina, less than 25% of its original cover remains (
This dataset compiles functional trait data of dung beetles (Scarabaeinae) from the Atlantic Forest biome (Fig.
In total, the dataset contains measurements from 1,398 individuals representing up to 385 taxa and 47 functional traits. It is also supplemented by 371 individuals representing 72 taxa, derived from field collections conducted by ALBT. For this novel dataset, traits include four categorical variables (body size, diet, relocation behaviour and diel activity) and six continuous variables (mean biomass, wing length, wing width, wing area, wing aspect ratio and wing loading). Additionally, wing images and associated metadata for 353 individuals from 51 taxa were generated by MEM to facilitate the visualisation and measurement of wing-related traits, as well as to support future research.
Holding the majority of the distribution range of the Atlantic Forest, Brazil also accounts for most of the studies (n = 26). The federal states of Santa Catarina (n = 8), Bahia (n = 5) and São Paulo (n = 4) stand out for the number of studies conducted there. Apart from Brazil, Argentina presents a significant number of studies, particularly in the province of Misiones (n = 4) (Fig.
This dataset compiles functional trait data on dung beetles (Scarabaeinae) from eight Brazilian states and one Argentine province, all within the Atlantic Forest biome (Fig.
When a Master's or PhD thesis was later published in a peer-reviewed journal, we prioritised the published version to ensure the use of validated data. No temporal restrictions were applied and the final selection includes 29 peer-reviewed articles published between 2011 and 2024. We only included studies reporting functional traits of dung beetles within the Atlantic Forest.
The dataset includes 1,027 individuals from 137 valid species and 210 unresolved taxa at genus level and encompasses 46 functional traits. Apart the novel database, only two other studies have presented functional traits at the individual level:
The published data containing species-level traits are:
All species records from the published datasets were carefully reviewed by FZVM and, when possible, identified to the species level. When an identification was updated, the original identification is retained in the column “ID at source”.
The novel dataset includes 371 individuals representing 63 valid species and 19 unresolved taxa, sampled across 30 sites in northeast São Paulo, Brazil, from February 2016 to January 2017. At each site, four pitfall traps (11 cm × 19 cm) spaced 50 m apart were buried, covered and filled with a killing solution; one trap used 50 g of human and pig faeces, the others using 500 g of cattle dung, left for 48 h to capture beetles active throughout the day (
Specimens were identified to the genus level by FZVM using
The final dataset contains trait data from 1,398 individuals, representing up to 385 taxa (including unresolved taxa at the genus level) and encompasses 53 functional traits.
The dataset focuses on the Atlantic Forest, a biodiversity hotspot spanning 1.56 million km² across Brazil, northern Argentina and south-eastern Paraguay, which has lost over 75% of its original area and is highly fragmented (
33° S and 3° S Latitude; 58° W and 34° 45′ W Longitude.
The dataset includes 1,398 individuals, corresponding to up to 385 taxa identified to genus level or higher. Overall, the species with the highest number of records in the dataset are Canthon (Francmonrosia) rutilans cyanescens Schmidt, 1922 (n = 38) and Dichotomius (Selenocopris) sericeus (Harold, 1867) (n = 38), followed by Deltochilum (Euhyboma) brasiliense (Castelnau, 1840) (n = 37), Deltochilum (Rubrohyboma) rubripenne (Gory, 1831) (n = 36), Deltochilum (Deltohyboma) morbillosum Burmeister, 1848 (n = 35) and Dichotomius (Dichotomius) mormon (Ljungh, 1799) (n = 34). The tribes Deltochilini and Coprini were the most represented, with 522 and 473 individuals, respectively.
| Rank | Scientific Name | Common Name |
|---|---|---|
| subfamily | Scarabaeinae | Dung beetles |
The dataset includes a wide range of morphological, ecological, behavioural and habitat-related traits. Below, traits are grouped into categories with definitions where relevant.
Morphological traits – traits describing external and internal organismal measurements or categorical structural features.
Abdomen slope (°C/°C): slope of abdominal temperature relative to ambient temperature, available per sex.
Anterior femur area (mean) (mm²): average area of the anterior femur, available per sex and per habitat.
Anterior tibia area (mean) (mm²): average area of the anterior tibia, available per sex and per habitat.
Anterior tibia length (mm): length of the anterior tibia, available per sex and per habitat.
Body area (mm²): projected body area, available per sex and per habitat.
Body size (mm): body size expressed in millimetres and categorised into classes, includes maximum, minimum and standard deviation, available per sex.
Body thickness (mm): body thickness, available per sex and per habitat.
Centroid size (mm): square root of the sum of squared distances of all landmarks from the centroid, available per sex.
Elytra width (mm): maximum width of the elytra, available per sex and per habitat.
Eye dorsal area (mm²): area of the compound eye measured dorsally, available per sex.
Head area (mm²): projected head area, available per sex and per habitat.
Head length (mm): linear distance from anterior to posterior head margin, available per sex.
Head width (mm): maximum width of the head, available per sex.
Metatibia length (mm): length of the metatibia, available per sex.
Pronotum width (mm): maximum width of the pronotum, available per sex and per habitat.
Prosternum height (mm): height of the prosternum, available per sex.
Protibia area (mm²): surface area of the protibia, available per sex.
Sphericity (mean, dimensionless): (S² / LI)¹ᐟ³, L = length, I = elytra width, S = thickness, available per sex and per habitat.
Thorax slope (°C/°C): thorax temperature slope.
Tooth width (mean) (mm): mean width of tooth structures, available per sex and per habitat.
Total length (mean) (mm): total body length, available per sex and per habitat.
Volume (mm³): calculated three-dimensional body volume, available per sex.
Wing area (mm²): surface area of the wings, available per sex.
Wing aspect ratio (dimensionless): (4 × wing length²) ÷ total wing area, available per sex, mean values also available per gram of body mass.
Wing length (mm): maximum linear extent of the wing, available per sex.
Wing loading (g/mm²): the ratio between body mass and total wing area, available per sex, mean values across individuals.
Wing shape (ratio, dimensionless): the ratio of wing length to wing width, available per sex.
Wing width (mm): maximum width of the wing, available per sex.
Ecological traits – traits describing the interaction of species with their environment, including resource use, habitat occupation and ecological strategies.
Biomass (g): biomass estimates.
Burial depth (cm): depth at which individuals bury dung or organic material.
Diet: classification of feeding guild.
Diel activity: temporal pattern of activity.
Endothermy (°C): the difference between the average temperature of the thorax and the nearby environment during flight.
Excavation capacity (ratio): inferred from the ratio of the anterior tibia to the length of the body.
Habitat specificity: degree of restriction to specific habitat types.
Levins' standardised index (dimensionless): measure of niche breadth, standardised from 0 (specialist) to 1 (generalist).
Nest: presence/absence of nests.
Pear ball nest: presence/absence of pear-shaped ball nests.
Primary disperser (%): percentage of the dung beetle species found in Brachyteles (muriqui) or tapir faeces.
Relative abundance (%): proportion of individuals of each species at a site, species with < 5% of total individuals being considered rare.
Spatial range distribution: classified as narrow (one region), intermediate (two adjoining regions) or large (three or more regions).
Behavioural traits – traits describing locomotion, movement, dispersal and other types of behaviour.
Ability to roll (ratio): estimated from the ratio of posterior tibia length to body length.
Direction (°): predominant movement direction.
Distance moved (m): distance travelled over 24 h between samplings.
Horizontal displacement (m): lateral displacement during locomotion.
Movement rate (m/day): rate of displacement over time.
Muscle strength (ratio): estimated from thorax size, calculated as (thorax height × elytra width) ÷ body length.
Relocation behaviour: food resource allocation behaviour.
Up down: classification of vertical movement (upward vs. downward displacement).
Flight capacity (ratio): estimated as the ratio of wing size to body size.
Minimum thoracic take-off temperature (°C): temperature at which a tethered beetle can initiate flight.
Taxonomic traits
Sex: male or female.
Tribe: taxonomic tribe of the species.
Age: age class of individuals.
The functional traits with the highest number of observations are predominantly categorical. Leading the list is relocation behavior (n = 1041), with most dung beetles identified as tunnellers (n = 560, Fig.
The dataset provides morphological, ecological, behavioural and taxonomic information for dung beetle species from the Brazilian Atlantic Forest, including measurements, biomass, ecological roles, movement traits and metadata such as species, sex, habitat and collection locality.
The dataset contains Word files with high-resolution images of dung beetle wings, along with metadata including a description field with collection locality.
Detailed descriptions of all fields included in the Atlantic Dung Beetle Trait dataset.
PRA is thankful for the postdoctoral fellowship provided by the Alexander von Humboldt Foundation (Ref. 410 3.2 - 1223427 - BRA - HFST-P). MEM gratefully acknowledges Bruna Bordin for her assistance with the identification, dissection and measurement of wings from specimens deposited at CEMT and acknowledges support from the subproject EECBio UFMT/Finep (No. 01.12.0359.00).