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Dung Beetles

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11 papers 0 to 25 followers
By Tom Wassmer Assistant Professor of Biology at Siena Heights University in Adrian, Michigan
https://www.readbyqxmd.com/read/27761721/linking-functional-group-richness-and-ecosystem-functions-of-dung-beetles-an-experimental-quantification
#1
Tanja Milotić, Stijn Quidé, Thomas Van Loo, Maurice Hoffmann
Dung beetles form an insect group that fulfils important functions in terrestrial ecosystems throughout the world. These include nutrient cycling through dung removal, soil bioturbation, plant growth, secondary seed dispersal and parasite control. We conducted field experiments at two sites in the northern hemisphere temperate region in which dung removal and secondary seed dispersal were assessed. Dung beetles were classified in three functional groups, depending on their size and dung manipulation method: dwellers, large and small tunnelers...
October 19, 2016: Oecologia
https://www.readbyqxmd.com/read/27859034/ecological-functions-provided-by-dung-beetles-are-interlinked-across-space-and-time-evidence-from-15-n-isotope-tracing
#2
Beatrice Nervo, Enrico Caprio, Luisella Celi, Michele Lonati, Giampiero Lombardi, Gloria Falsone, Gabriele Iussig, Claudia Palestrini, Daniel Said-Pullicino, Antonio Rolando
Maintaining multiple ecological functions ('multifunctionality') is crucial to sustain viable ecosystems. To date most studies on biodiversity-ecosystem functioning (BEF) have focused on single or few ecological functions and services. However, there is a critical need to evaluate how species and species assemblages affect multiple processes at the same time, and how these functions are interconnected. Dung beetles represent excellent model organisms because they are key contributors to several ecosystem functions...
November 14, 2016: Ecology
https://www.readbyqxmd.com/read/27145126/if-dung-beetles-scarabaeidae-scarabaeinae-arose-in-association-with-dinosaurs-did-they-also-suffer-a-mass-co-extinction-at-the-k-pg-boundary
#3
Nicole L Gunter, Tom A Weir, Adam Slipinksi, Ladislav Bocak, Stephen L Cameron
The evolutionary success of beetles and numerous other terrestrial insects is generally attributed to co-radiation with flowering plants but most studies have focused on herbivorous or pollinating insects. Non-herbivores represent a significant proportion of beetle diversity yet potential factors that influence their diversification have been largely unexamined. In the present study, we examine the factors driving diversification within the Scarabaeidae, a speciose beetle family with a range of both herbivorous and non-herbivorous ecologies...
2016: PloS One
https://www.readbyqxmd.com/read/27147229/got-dung-resource-selection-by-dung-beetles-in-neotropical-forest-fragments-and-cattle-pastures
#4
A Bourg, F Escobar, I MacGregor-Fors, C E Moreno
Both the impact of habitat modification on the food preferences of species and its impact on ecosystem functioning are poorly understood. In this study, we analyzed food selection by dung beetles in 80 tropical forest fragments and their adjacent cattle pastures in the Los Tuxtlas Biosphere Reserve, Mexico. Ten pitfall traps were placed at each site, half baited with human dung and the other half with fish carrion. We assessed dung beetle food selection and classified any specialization in resource use quantitatively using a multinomial classification model...
May 4, 2016: Neotropical Entomology
https://www.readbyqxmd.com/read/26939121/assessing-the-importance-of-intraspecific-variability-in-dung-beetle-functional-traits
#5
Hannah M Griffiths, Julio Louzada, Richard D Bardgett, Jos Barlow
Functional diversity indices are used to facilitate a mechanistic understanding of many theoretical and applied questions in current ecological research. The use of mean trait values in functional indices assumes that traits are robust, in that greater variability exists between than within species. While the assertion of robust traits has been explored in plants, there exists little information on the source and extent of variability in the functional traits of higher trophic level organisms. Here we investigated variability in two functionally relevant dung beetle traits, measured from individuals collected from three primary forest sites containing distinct beetle communities: body mass and back leg length...
2016: PloS One
https://www.readbyqxmd.com/read/26013011/structure-of-dung-beetle-communities-in-an-altitudinal-gradient-of-neotropical-dry-forest
#6
D Domínguez, D Marín-Armijos, C Ruiz
To understand the effects of global warming in tropical insect communities, it is necessary to comprehend how such communities respond to different abiotic factors that covariate with altitude. In this study, we partially answer this question applied to dung beetle communities distributed along an altitudinal gradient. The sampling was conducted in seven stations 100 m apart each in altitude in a dry mountain scrub in southern Ecuador. A total of 7422 individuals belonging to six species were captured. Canthon balteatus Boheman was the most abundant with 6502 individuals, and Onoreidium ohausi (Arrow) was the least abundant with 20 individuals...
February 2015: Neotropical Entomology
https://www.readbyqxmd.com/read/25849430/suppression-of-escherichia-coli-o157-h7-by-dung-beetles-coleoptera-scarabaeidae-using-the-lowbush-blueberry-agroecosystem-as-a-model-system
#7
Matthew S Jones, Shravani Tadepalli, David F Bridges, Vivian C H Wu, Frank Drummond
Wildlife as a source of microbial contamination is a food safety concern. Deer feces (scat) have been determined as a point source for Escherichia coli O157:H7 contamination of fresh produce. The ecological role of the scooped scarab (Onthophagus hecate (Panzer)), a generalist dung beetle species common in Maine blueberry fields, was explored as a biological control agent and alternatively as a pathogen vector between deer scat and food. A large-scale field survey of wildlife scat indicated that pathogenic E...
2015: PloS One
https://www.readbyqxmd.com/read/25822150/scale-dependence-of-processes-structuring-dung-beetle-metacommunities-using-functional-diversity-and-community-deconstruction-approaches
#8
Pedro Giovâni da Silva, Malva Isabel Medina Hernández
Community structure is driven by mechanisms linked to environmental, spatial and temporal processes, which have been successfully addressed using metacommunity framework. The relative importance of processes shaping community structure can be identified using several different approaches. Two approaches that are increasingly being used are functional diversity and community deconstruction. Functional diversity is measured using various indices that incorporate distinct community attributes. Community deconstruction is a way to disentangle species responses to ecological processes by grouping species with similar traits...
2015: PloS One
https://www.readbyqxmd.com/read/25469770/the-importance-of-microhabitat-for-biodiversity-sampling
#9
Zia Mehrabi, Eleanor M Slade, Angel Solis, Darren J Mann
Responses to microhabitat are often neglected when ecologists sample animal indicator groups. Microhabitats may be particularly influential in non-passive biodiversity sampling methods, such as baited traps or light traps, and for certain taxonomic groups which respond to fine scale environmental variation, such as insects. Here we test the effects of microhabitat on measures of species diversity, guild structure and biomass of dung beetles, a widely used ecological indicator taxon. We demonstrate that choice of trap placement influences dung beetle functional guild structure and species diversity...
2014: PloS One
https://www.readbyqxmd.com/read/25502448/the-role-of-species-traits-in-mediating-functional-recovery-during-matrix-restoration
#10
Andrew D Barnes, Rowan M Emberson, Frank-Thorsten Krell, Raphael K Didham
Reversing anthropogenic impacts on habitat structure is frequently successful through restoration, but the mechanisms linking habitat change, community reassembly and recovery of ecosystem functioning remain unknown. We test for the influence of edge effects and matrix habitat restoration on the reassembly of dung beetle communities and consequent recovery of dung removal rates across tropical forest edges. Using path modelling, we disentangle the relative importance of community-weighted trait means and functional trait dispersion from total biomass effects on rates of dung removal...
2014: PloS One
https://www.readbyqxmd.com/read/25528749/attractiveness-of-native-mammal-s-feces-of-different-trophic-guilds-to-dung-beetles-coleoptera-scarabaeinae
#11
Juliano A Bogoni, Malva I M Hernández
Mammal feces are the primary food and nesting resource for the majority of dung beetle species, and larval development depends on the quantity and quality of that resource. Physiological necessities, competitive interactions, and resource sharing are common and suggest that dung beetles may show preferences for feces of greater nutritional quality, which may in turn impact beetle assemblages and community structure. This study investigated whether attractiveness of dung beetles to different resource (feces) types varies depending on mammal trophic guild and associated nutritional content...
2014: Journal of Insect Science
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