Escarabajos copronecrófagos (Scarabaeidae: Scarabaeinae) de la Reserva Natural Educativa Colonia Benítez, Chaco, Argentina

Ibarra-Polesel, Mario G.; Damborsky, Miryam Pieri; Porcel, Eduardo

doi:10.1016/j.rmb.2015.05.011

Cited by 10 publications

(7 citation statements)

References 33 publications

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“…Both species are native to the Chaco region (Medina et al ., ; Damborsky et al ., ; Vaz‐de‐Mello et al ., ). Both species are mainly necrophagous (da Silva et al ., ; Ibarra‐Polesel et al ., ); however, the most abundant feeding resource in livestock areas is cattle dung; we expected coprophagous species to be dominant. While both study areas (North and South) showed similar patterns of species richness and composition between habitat types (lower number of species and similarity in open pastures than in the native forest and the silvopastoral system), local differences were also found; the open pastures in the South area were characterised by lower dominance and higher number of species than those in the North area (24 vs. 16).…”

Section: Discussionmentioning

confidence: 95%

Livestock areas with canopy cover sustain dung beetle diversity in the humid subtropical Chaco forest

Alonso

Zurita

Bellocq

2019

Insect Conserv Diversity

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1. We assessed differences in the alpha and beta diversity of dung beetles in native forest and two livestock systems (with and without canopy cover) typical of the Argentine Chaco region and related the dung beetle assemblages to environmental conditions. 2. Dung beetles were sampled in native forest and two livestock systems in the spring (2015)(2016), in two areas of the humid Chaco region in northern Argentina. In each area, five sampling sites were selected for each habitat type, and ten pitfall traps were baited with human faeces and carrion and placed at each site.3. The livestock systems with canopy cover preserved the environmental conditions from the native forest (temperature and vegetation structure) and the richness and composition of the native forest dung beetle community in the two areas studied, whereas the open pastures exhibited higher ground temperature, simplified vegetation structure and lower dung beetle richness and similarity in species composition in relation to the native forest.4. In livestock systems of the humid Chaco, the canopy cover is the main determinant of dung beetle communities through the maintenance of temperature and humidity. In the light of these results, livestock production in silvopastoral systems preserving canopy cover can be an alternative compatible with conservation of the dung beetle diversity of native forests. Considering the central role of dung beetles in maintaining soil structure and fertility (through the relocation of cow dung), silvopastoral systems will probably maintain the productivity compared to open pastures.

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Section: Discussionmentioning

confidence: 95%

Livestock areas with canopy cover sustain dung beetle diversity in the humid subtropical Chaco forest

Alonso

Zurita

Bellocq

2019

Insect Conserv Diversity

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“…En contraste, se encontró una mayor abundancia de individuos de Scarabaeinae en bosque natural donde posiblemente se encuentra mayor diversidad y abundancia de mamíferos silvestres que aportan recurso alimenticio para las comunidades de escarabajos copronecrófagos que son sensibles a la abundancia del recurso alimenticio, el tipo de excremento y los cambios en la disponibilidad de estos (Rangel-Acosta et al, 2012). En el bosque natural, los escarabajos copronecrófagos logran colonizar el excremento de mamíferos y posiblemente de aves y de reptiles, pero también aprovechan otros recursos como materia vegetal en descomposición, hongos, frutas y carroña (Bustos y Lopera Toro, 2003;Ibarra-Polesel et al, 2015;Sánchez Hernández et al, 2018), lo que indicaría una mayor cantidad y variedad de recurso que podría significar una mejor dinámica en el bosque, donde los escarabeinos contribuyen con el ciclaje de nutrientes y la dispersión secundaria de las semillas incrementando la regeneración de los bosques (Rangel-Acosta et al, 2012). Para el PUEAR, la presencia de escarabajos supo-ne un servicio de apoyo en la restauración del bosque natural que se encuentra rodeado por otros tipos de vegetación en restauración como el matorral y el páramo antrópico.…”

Section: Discussionunclassified

Riqueza y abundancia de escarabajos peloteros en un área de conservación periurbana de Loja, Ecuador

Armijos-Armijos

Paucar-Cabrera²,

Mendoza-León

2022

CEDAMAZ

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Los escarabajos peloteros (Coleoptera: Scarabaeidae: Scarabaeinae) son usados como bioindicadores por su sensibilidad y alto grado de fidelidad a condiciones ambientales específicas. En el presente estudio se determinó la riqueza y abundancia de los escarabajos de la subfamilia Scarabaeinae en cuatro coberturas vegetales del Parque Universitario de Educación Ambiental y Recreacional (PUEAR) en Loja, Ecuador. En cada cobertura se colocaron tres transectos longitudinales de 200 m y 5 puntos de muestreo en cada transecto. Se realizaron tres periodos independientes de muestreos usando trampas pitfall cebadas con heces humanas (coprotrampas) y pollo en descomposición (necrotrampas) para la colecta de especímenes. Para la comunidad de Scarabaeinae se calcularon medidas e índices de riqueza, abundancia y se evaluaron las diferencias en la composición entre las coberturas vegetales. La riqueza de Scarabaeinae fue mayor en plantaciones forestales, mientras que en el páramo antrópico solo se encontró una especie. La subfamilia Scarabaeinae registró mayor abundancia en el bosque (216 individuos) y menor abundancia en el páramo antrópico (2 individuos). La composición y estructura de las comunidades de la subfamilia Scarabaeinae muestran diferencias en función de las coberturas vegetales. Los sitios que tienen una mayor similitud en la composición de las comunidades de acuerdo con la cobertura vegetal son el bosque natural y las plantaciones forestales; el páramo se diferencia notablemente de las otras coberturas vegetales evaluadas.

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“…Two exceptions were D. komareki and C. cyanescens , which showed similar attraction to carrion and decomposing fungi (sapro‐necrophagous species). D. komareki has been previously classified as a necrophagous species (Ibarra‐Polesel et al ., 2015) or as a generalist species (Correa et al ., 2016), and C. cyanescens as a coprophagous species (Mayer & Vasconcelos, 2013) or necrophagous species (Gillett et al ., 2010). Differences among studies are probably due to the used baits since none of the previous studies used decomposing fungi as a potential resource.…”

Section: Discussionmentioning

confidence: 99%

“…Previous studies were performed either in the field (e.g. Estrada et al, 1993;Ibarra-Polesel et al, 2015;Correa et al, 2016;Wurmitzer et al, 2017) or the laboratory (e.g. Dormont et al, 2004Dormont et al, , 2007Dormont et al, , 2010, whereas few studies have considered both situations (e.g.…”

Section: Discussionmentioning

confidence: 99%

Dung beetle trophic ecology: are we misunderstanding resources attraction?

Gómez

Verdú

Velazco

et al. 2020

Ecological Entomology

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Trophic ecology of dung beetles has been widely studied because of the important ecological role of these taxa. However, previous studies have focused on a limited number of potential food items (mainly vertebrate dung and carrion) and have used only one approach (either field or laboratory). Moreover, recent studies showed high abundance of dung beetles in defaunated areas with a low abundance of these resources. In this study, we combined a field and laboratory approach to explore dung beetle trophic attraction to different potential native resources in the Atlantic forest; and we evaluated whether results can explain the high abundance of dung beetles in defaunated areas. Through laboratory olfactometry experiments, we first exposed individuals to vertebrate carrion, omnivorous dung, and decomposing fungi. Then, we exposed species that exhibited a preference for dung to monkey, tapir, and feline dung; and those that preferred carrion and decomposing fungi to chicken, cow meat, and arthropod carcasses. We compared trophic attractions in the field and laboratory conditions with generalised additive models. We found that coprophagous species preferred monkey dung, and all necrophagous and sapro‐necrophagous species preferred arthropod carcasses. These results suggest that the importance of arthropods carcasses as an important resource for dung beetles has been largely underestimated. The results of this study might provide an explanation for the high abundance of necrophagous and sapro‐necrophagous dung beetles in defaunated areas. In addition, the use of omnivorous dung and arthropod carcasses could be an effective sampling method for dung beetle assemblages.

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Escarabajos copronecrófagos (Scarabaeidae: Scarabaeinae) de la Reserva Natural Educativa Colonia Benítez, Chaco, Argentina

Cited by 10 publications

References 33 publications

Livestock areas with canopy cover sustain dung beetle diversity in the humid subtropical Chaco forest

Livestock areas with canopy cover sustain dung beetle diversity in the humid subtropical Chaco forest

Riqueza y abundancia de escarabajos peloteros en un área de conservación periurbana de Loja, Ecuador

Dung beetle trophic ecology: are we misunderstanding resources attraction?

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