Habitat fragmentation alters the structure of dung beetle communities in the Atlantic Forest

2011 ◽  
Vol 144 (1) ◽  
pp. 362-369 ◽  
Author(s):  
Bruno K.C. Filgueiras ◽  
Luciana Iannuzzi ◽  
Inara R. Leal
Keyword(s):  
Habitat Fragmentation ◽  
Atlantic Forest ◽  
Dung Beetle

scholarly journals Habitat fragmentation in the Brazilian Atlantic Forest is associated with erosion of frog immunogenetic diversity and increased fungal infections

2021 ◽  
Author(s):  
Anat Belasen ◽  
Kevin Amses ◽  
Rebecca Clemons ◽  
Guilherme Becker ◽  
Felipe Toledo ◽  
...  
Keyword(s):  
Habitat Fragmentation ◽  
Atlantic Forest ◽  
Batrachochytrium Dendrobatidis ◽  
Fungal Infections ◽  
Emerging Infectious Diseases ◽  
Genetic Erosion ◽  
Population Level ◽  
Brazilian Atlantic Forest ◽  
Frog Species ◽  
Mhc Iib

Habitat fragmentation and infectious disease threaten amphibians globally, but little is known about how these two threats interact. In this study, we examined the effects of Brazilian Atlantic Forest habitat fragmentation on frog genetic diversity at an immune locus known to affect disease susceptibility in amphibians, the MHC IIB locus. We used a custom high-throughput assay to sequence the MHC IIB locus across six focal frog species in two regions of the Atlantic Forest. We also used a molecular assay to quantify infections by the fungal pathogen Batrachochytrium dendrobatidis (Bd). We found that habitat fragmentation is associated with genetic erosion at the MHC IIB locus, and that this erosion is most severe in frog species restricted to intact forests. Significant Bd infections were recovered only in one Atlantic Forest region, potentially due to the relatively higher elevation. In this region, forest specialists showed an increase in both Bd prevalence and loads in fragmented habitats. We also found that reduced population-level MHC IIB diversity was associated with increased Bd infection risk. On the individual-level, MHC IIB heterozygotes (by allelic genotype as well as supertype) exhibited a reduced risk of Bd infection. Our results suggest that habitat fragmentation increases infection susceptibility in amphibians, mediated at least in part through loss of immunogenetic diversity. Our findings have implications for the conservation of fragmented populations in the face of emerging infectious diseases.

Habitat fragmentation, EFN-bearing trees and ant communities: Ecological cascades in Atlantic Forest of northeastern Brazil

2016 ◽  
Vol 42 (1) ◽  
pp. 31-39 ◽  
Author(s):  
Talita Câmara ◽  
Walkiria R. Almeida ◽  
Marcelo Tabarelli ◽  
Alan N. Andersen ◽  
Inara R. Leal
Keyword(s):  
Habitat Fragmentation ◽  
Atlantic Forest ◽  
Northeastern Brazil ◽  
Ant Communities

scholarly journals Habitat fragmentation affects individual condition: evidence from small mammals of the Brazilian Atlantic Forest

2018 ◽  
Vol 99 (4) ◽  
pp. 936-945 ◽  
Author(s):  
Ana Cláudia Delciellos ◽  
Camila dos Santos de Barros ◽  
Jayme Augusto Prevedello ◽  
Mariana Silva Ferreira ◽  
Rui Cerqueira ◽  
...  
Keyword(s):  
Habitat Fragmentation ◽  
Atlantic Forest ◽  
Small Mammals ◽  
Brazilian Atlantic Forest ◽  
Individual Condition

scholarly journals New records of relictual populations of dung beetle species (Coleoptera, Scarabaeidae) in the Atlantic Forest of the Brazilian Northeast

Check List ◽  
2020 ◽  
Vol 16 (5) ◽  
pp. 1289-1303
Author(s):  
Josival Francisco Araújo ◽  
Fernando Augusto Barbosa Silva ◽  
Rita de Cássia de Moura
Keyword(s):  
Atlantic Forest ◽  
New Records ◽  
Dung Beetle ◽  
Dung Beetles ◽  
Northeastern Brazil ◽  
Beetle Species ◽  
Brazilian Northeast

The diversity of dung beetles is still underestimated in northeastern Brazil. Recent collections have revealed new records of the following species: Canthon histrio (Lepeletier de Saint-Fargeau & Audinet-Serville, 1828), Coprophanaeus acrisius (MacLeay, 1819), Coprophanaeus dardanus (MacLeay, 1819), Deltochilum alpercata Silva et al., 2015, Deltochilum brasiliense (Castelnau, 1840), Dichotomius gilletti Valois et al., 2017, Dichotomius iannuzziae Valois et al., 2017, Eurysternus calligrammus Dalman, 1824, Eurysternus parallelus Castelnau, 1840, Oxysternon silenus Castelnau, 1840, and Phanaeus splendidulus (Fabricius, 1781). These records are discussed in light of the known biogeography of each species.

scholarly journals The relative influence of different landscape attributes on dung beetle communities in the Brazilian Atlantic forest

2020 ◽  
Vol 117 ◽  
pp. 106534
Author(s):  
Thamyrys B. Souza ◽  
Filipe M. França ◽  
Jos Barlow ◽  
Pavel Dodonov ◽  
Juliana S. Santos ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Dung Beetle ◽  
Relative Influence ◽  
Brazilian Atlantic Forest ◽  
Landscape Attributes
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