Una nueva especie Mexicana de Dichotomius Hope (Coleoptera: Scarabaeidae) y clave para la identificación de las especies del grupo carolinus

Peraza, Lizandro N.; Deloya, Cuauhtémoc

doi:10.1590/s1519-566x2006000500009

Cited by 11 publications

(6 citation statements)

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“…Although other authors have suggested larger distances for pitfall trapping, we set this distance as we are not using traps as replicates, but as subsamples in order to complete the species set of each site. Traps were left open 144 h and were baited with fresh dung every 48 h. Beetles were identified to the species level using a local reference collection of Scarabaeidae, following taxonomic keys [63][64][65][66][67][68][69][70][71] and with the help of specialists (Fernando Escobar and Pablo Minor Montiel from the Instituto de Ecología, A.C., Xalapa, México). trait data.…”

Section: Methodsmentioning

confidence: 99%

Assembly mechanisms of dung beetles in temperate forests and grazing pastures

Ortega-Martínez

Moreno

Rios-Díaz

et al. 2020

Sci Rep

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the role of deterministic and stochastic mechanisms in community assembly is a key question in ecology, but little is known about their relative contribution in dung beetle assemblages. Moreover, in human modified landscapes these mechanisms are crucial to understand how biodiversity can be maintained in productive agroecosystems. We explored the assembly mechanisms driving dung beetle assemblages in forests and grazed grassland patches, and assessed the role of dung availability, soil hardness and moisture, elevation and land use heterogeneity as environmental predictors of functional diversity. to determine the underlying assembly mechanisms, we estimated functional diversity metrics (functional richness, evenness and divergence) and their departure from the predicted values by null models. We also used GLMs to assess the influence of environmental variables on functional diversity. in most cases, stochastic processes prevailed in structuring dung beetle assemblages and, consequently, environmental variables were not good predictors of dung beetle functional diversity. However, limiting similarity was found as a secondary mechanism with an effect on dung beetle assemblages in grasslands. Our results highlight the importance of stochastic processes that may reflect a metacommunity dynamic. therefore, restoring landscape connectivity might be more important than habitat quality for the conservation of these functionally diverse beetle assemblages. Community assembly theory provides a conceptual foundation about the mechanisms that determine species composition of local assemblages 1,2 , and this background becomes especially relevant for studies concerning the ecological consequences of environmental contemporary changes. For example, results from a recent study have made it possible to improve our understanding of biological invasions, a global issue that is critical in ecology and conservation 3. However, an important remaining issue is to unravel how current anthropogenic changes to the environment, such as land use change and agricultural production can modify the assembly mechanisms that shape the structure and composition of local communities 4. Human activities have contributed substantially to the loss of species and degradation of ecosystems 5,6 , generating impacts on ecological communities 7. Therefore, identifying the drivers of community assembly in human modified landscapes is an urgent challenge. Both deterministic and stochastic mechanisms are important in assembling biological communities. The main deterministic mechanisms driving community assembly are limiting similarity and environmental filtering 8-10. If the local community is formed by non-redundant species, its trait diversity will be high (trait overdispersion) as a result of strong ecological interactions, and community assembly is considered to be driven by a limiting similarity mechanism due to competition 8. On the contrary, the environmental filtering mechanism (the abiotic filter) structures local communities through environmental r...

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Section: Methodsmentioning

confidence: 99%

Assembly mechanisms of dung beetles in temperate forests and grazing pastures

Ortega-Martínez

Moreno

Rios-Díaz

et al. 2020

Sci Rep

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“…During the handling of traps and samples, the necessary prophylactic measures were taken to avoid any type of contamination. To identify the specimens, we used the keys of (Medina and Lopera-Toro 2000, Genier and Kohlmann 2003, Peraza and Deloya 2006, Vaz-De-Mello et al 2011, Solis and Kohlmann 2013, Sarmiento-Garcés and Amat-García 2014. In addition, the specimens were also compared with those present in the CEUA and the Francisco Luis Gallego Entomological Museum of the National University of Colombia in Medellin (MEFLG).…”

Section: Sampling Methodsmentioning

confidence: 99%

Silvopastoral systems as an alternative for conservation of dung beetles (Coleoptera: Scarabaeinae) in a cattle landscape in Caucasia Colombia

2022

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Silvopastoral systems (SPS) represent an alternative to the environmental impact and biodiversity decline caused by extensive livestock practices. We evaluate the transformation of a conventional pasture parcel into a SPS, and how it alters the diversity of dung beetles, fundamental organisms in these ecosystems. Transects with pitfall traps, baited with excrement were established in SPS, pasture, and forest ecosystems. Differences in the structure of communities were compared through Whittaker curves, the incidence of functional groups, and non-parametric multidimensional scaling. The completeness of the sampling was estimated and the magnitude of change in qD diversity of the SPS concerning pasture and forest ecosystem was calculated for each season. A total of 7446 beetles belonging to twelve genera, fifteen species, and seven morphospecies were collected. The SPS was the environment with the greatest diversity of qD and functional groups after the forest ecosystem. It was more diverse than pasture, 30 % to 50 % richer in species and 10 % to 50 % more diverse in 1D and 2D. It is concluded that the conversion of the conventional pastures to SPS led to changes in the composition and structure of the beetle community, making the SPS a more diverse environment than the pasture in all seasons including the dry one, when conditions are the most adverse. These results suggest that the implementation of SPS is an important measure to preserve and increase the diversity of forest dung beetles in the livestock areas of the country.

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“…Estos individuos son alimentados con una dieta estándar de acuerdo con sus hábitos de alimentación. Los escarabajos capturados se transportaron a laboratorio en frascos con etanol al 70% y se identificaron a nivel de especies usando bibliografía taxonómica [28][29][30][31][32][33][34][35][36][37][38].…”

Section: Muestreo E Identificaciónunclassified

Evaluación del estiércol de mamíferos nativos como potenciales atrayentes para el muestreo de escarabajos coprófagos (Coleoptera: Scarabaeinae)

Rodríguez-López

Sánchez-Hernández

Gómez

2021

Neotropical Biodiversity

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Mammalian dung represents a primary feeding and reproductive resource for most dung beetle species. Competition for the trophic resource is common among the subfamily Scarabaeinae showing different habits depending on the quantity and quality of food available. In this study, we evaluated the dung of six species of mammal native to Chiapas (Mexico) as attractants for sampling dung beetles. The six species have different feeding habits (carnivores, herbivores and omnivores) and the feces used were obtained from Zoo animals fed a standard diet. Sampling efficiency was over 99% for each of the attractants. Tapirus bairdii feces attracted the highest abundance, while Canis latrans attracted the highest richness and diversity was higher in Procyon lotor. The captured species showed no affinity for a specific attractant, and differences in richness, abundance, diversity, and species composition between baits were largely non-significant. These results suggest that when food availability is high, Scarabaeinae assemblages maintain very abundant populations with generalists feeding habits. However, other aspects such as the quality and quantity (volume) of the food may be important when choosing a resource. Hence, the use of different types of attractants that meet these characteristics offers the possibility of improving results in the monitoring of dung beetle communities in tropical forests, allowing the capture of those inconspicuous or rare species that inhabit the landscape.

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Una nueva especie Mexicana de Dichotomius Hope (Coleoptera: Scarabaeidae) y clave para la identificación de las especies del grupo carolinus

Cited by 11 publications

References 0 publications

Assembly mechanisms of dung beetles in temperate forests and grazing pastures

Assembly mechanisms of dung beetles in temperate forests and grazing pastures

Silvopastoral systems as an alternative for conservation of dung beetles (Coleoptera: Scarabaeinae) in a cattle landscape in Caucasia Colombia

Evaluación del estiércol de mamíferos nativos como potenciales atrayentes para el muestreo de escarabajos coprófagos (Coleoptera: Scarabaeinae)

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