Variations in dung beetles assemblages (Coleoptera: Scarabaeidae) within two rain forest habitats in French Guiana

Feer, François

doi:10.15517/rbt.v61i2.11220

Cited by 10 publications

(10 citation statements)

References 42 publications

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“…Species richness, abundance and biomass of dung beetles were negatively affected in disturbed habitats (e.g., secondary forests and Eucalyptus plantations in the Brazilian Amazon) when compared to primary forest habitats [35] . Microclimatic variations in tropical forests related to canopy height and opening affected dung beetle communities in French Guiana [84] . Thus, many species of dung beetles have relationships with certain habitat characteristics, likely to facilitate finding mates and/or food, or could be directly related to the presence of organisms that produce their food resource.…”

Section: Discussionmentioning

confidence: 99%

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Local and Regional Effects on Community Structure of Dung Beetles in a Mainland-Island Scenario

Silva

Hernández

2014

PLoS ONE

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Understanding the ecological mechanisms driving beta diversity is a major goal of community ecology. Metacommunity theory brings new ways of thinking about the structure of local communities, including processes occurring at different spatial scales. In addition to new theories, new methods have been developed which allow the partitioning of individual and shared contributions of environmental and spatial effects, as well as identification of species and sites that have importance in the generation of beta diversity along ecological gradients. We analyzed the spatial distribution of dung beetle communities in areas of Atlantic Forest in a mainland-island scenario in southern Brazil, with the objective of identifying the mechanisms driving composition, abundance and biomass at three spatial scales (mainland-island, areas and sites). We sampled 20 sites across four large areas, two on the mainland and two on the island. The distribution of our sampling sites was hierarchical and areas are isolated. We used standardized protocols to assess environmental heterogeneity and sample dung beetles. We used spatial eigenfunctions analysis to generate the spatial patterns of sampling points. Environmental heterogeneity showed strong variation among sites and a mild increase with increasing spatial scale. The analysis of diversity partitioning showed an increase in beta diversity with increasing spatial scale. Variation partitioning based on environmental and spatial variables suggests that environmental heterogeneity is the most important driver of beta diversity at the local scale. The spatial effects were significant only at larger spatial scales. Our study presents a case where environmental heterogeneity seems to be the main factor structuring communities at smaller scales, while spatial effects are more important at larger scales. The increase in beta diversity that occurs at larger scales seems to be the result of limitation in species dispersal ability due to habitat fragmentation and the presence of geographical barriers.

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Section: Discussionmentioning

confidence: 99%

“…Besides differences in dispersal ability, several species of dung beetles are associated with certain habitat types [35] , [46] , [47] , [87] – [91] due to microclimatic factors [84] or resource availability [31] . Data on differences in dispersal ability in the species sampled in this study are still lacking.…”

Section: Discussionmentioning

confidence: 99%

Local and Regional Effects on Community Structure of Dung Beetles in a Mainland-Island Scenario

Silva

Hernández

2014

PLoS ONE

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“…Sampling was conducted once a month from June to November 2018. Each trap was active for 48 h; after this time, the traps were emptied to collect the beetles that had fallen into the buckets, which were left on site to be re-used in the following month [ 52 , 57 , 67 , 68 ]. The location of the traps therefore remained constant over the entire sampling period.…”

Section: Methodsmentioning

confidence: 99%

Diversity Patterns of Dung Beetles along a Mediterranean Elevational Gradient

Mantoni

Tsafack

Palusci

et al. 2021

Insects

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Most studies of biodiversity–elevational patterns do not take species abundance into consideration. Hill numbers are a unified family of indices that use species abundance and allow a complete characterization of species assemblages through diversity profiles. Studies on dung beetle responses to elevation were essentially based on species richness and produced inconsistent results because of the non-distinction between different habitats and the use of gradients dispersed over wide areas. We analyzed dung beetle diversity in a Mediterranean mountain (central Italy) for different habitats (woodlands vs. grasslands) and taxonomic groups (scarabaeids and aphodiids). Scarabaeids were the most abundant. Since scarabaeids are able to construct subterranean nests, this indicates that the warm and dry summer climatic conditions of high elevations favor species capable of protecting their larvae from desiccation. Dung beetles were more abundant and diversified in grasslands than in woodlands, which is consistent with their preference for open habitats. In the woodlands, diversity increased with increasing elevation because of increasing tree thinning, whereas, in the grasslands, diversity decreased with elevation because of increasingly harsher environmental conditions. These results indicate a trade-off in the beetle response to elevation between the positive effects of increasing the availability of more suitable habitats and the decrease of optimal environmental conditions.

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“…( D .) robustus ); Feer : 767; Larsen : 96, 100; Nunes et al . : 408–410; Feer & Boissier : 169; Silva et al .…”

Section: Taxonomyunclassified

Taxonomic review of theDichotomius mamillatusgroup (Coleoptera: Scarabaeidae), with a description of a new species,Dichotomius(Dichotomius)gandiniisp. nov., from western Amazonia

Rossini¹,

Vaz‐de‐Mello

2020

Austral Entomology

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We conducted a morphologically based taxonomic revision of the Dichotomius mamillatus species group (Scarabaeinae). A new species, Dichotomius (Dichotomius) gandinii sp. nov., from western Amazonia is described, illustrated and included in this group, along with Dichotomius (Dichotomius) mamillatus (Felsche, 1901), Dichotomius (Dichotomius) robustus (Luederwaldt, 1935) and Dichotomius (Dichotomius) worontzowi (Pereira, 1942). The external and genital morphology of the mamillatus group and its species are defined through an in‐depth examination of the surviving type material, as well as hundreds of reference specimens deposited in several natural history collections. An illustrated identification key to the Dichotomius species of the group is provided. Pinotus calcaratus Arrow, 1913 (currently Dichotomius calcaratus) is considered to be a junior subjective synonym of Dichotomius (Dichotomius) mamillatus. This research further resolves the many taxonomic questions that are still hampering the correct identification of Dichotomius species in the Neotropics, providing key diagnostic tools for researchers interested in these scarab beetles. The comprehensive morphological study of the D. mamillatus group highlights the important taxonomic value of the often‐overlooked endophallic structures, as well as their central role in informing hypotheses of systematic relationships.

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Variations in dung beetles assemblages (Coleoptera: Scarabaeidae) within two rain forest habitats in French Guiana

Cited by 10 publications

References 42 publications

Local and Regional Effects on Community Structure of Dung Beetles in a Mainland-Island Scenario

Local and Regional Effects on Community Structure of Dung Beetles in a Mainland-Island Scenario

Diversity Patterns of Dung Beetles along a Mediterranean Elevational Gradient

Taxonomic review of theDichotomius mamillatusgroup (Coleoptera: Scarabaeidae), with a description of a new species,Dichotomius(Dichotomius)gandiniisp. nov., from western Amazonia

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