Mandibular structure, gut contents analysis and feeding group of orthopteran species collected from different habitats of Satoyama area within Kanazawa City, Japan

ElEla, S. Abu; ElSayed, Wael M.; Nakamura, Koji

doi:10.11609/jott.o2346.849-57

Cited by 9 publications

(7 citation statements)

References 24 publications

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“…Gampsocleis mikado , a katydid species known to be an omnivorous scavenger (e.g., ElEla et al. ), registered a TP Glu/Phe value of 2.6. Paper wasps (e.g., Polistes japonicusm TP Glu/Phe = 3.0), ants ( Formica japonica, TP Glu/Phe = 3.0), ladybird beetles (e.g., Coccinella septempunctata , TP Glu/Phe = 3.0), and mantids ( Tenodera aridifolia, TP Glu/Phe = 3.2) are secondary consumers with TP Glu/Phe values ranging from 2.9 to 3.2.…”

Section: Resultsmentioning

confidence: 99%

High‐resolution food webs based on nitrogen isotopic composition of amino acids

Chikaraishi

Steffan

Ogawa

et al. 2014

Ecology and Evolution

184

265

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Food webs are known to have myriad trophic links between resource and consumer species. While herbivores have well-understood trophic tendencies, the difficulties associated with characterizing the trophic positions of higher-order consumers have remained a major problem in food web ecology. To better understand trophic linkages in food webs, analysis of the stable nitrogen isotopic composition of amino acids has been introduced as a potential means of providing accurate trophic position estimates. In the present study, we employ this method to estimate the trophic positions of 200 free-roaming organisms, representing 39 species in coastal marine (a stony shore) and 38 species in terrestrial (a fruit farm) environments. Based on the trophic positions from the isotopic composition of amino acids, we are able to resolve the trophic structure of these complex food webs. Our approach reveals a high degree of trophic omnivory (i.e., noninteger trophic positions) among carnivorous species such as marine fish and terrestrial hornets.This information not only clarifies the trophic tendencies of species within their respective communities, but also suggests that trophic omnivory may be common in these webs.

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Section: Resultsmentioning

confidence: 99%

High‐resolution food webs based on nitrogen isotopic composition of amino acids

Chikaraishi

Steffan

Ogawa

et al. 2014

Ecology and Evolution

184

265

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“…Faunivorous orthopterans are indistinguishable from insectivorous mammals grouped by taxonomic order (ANOVA, F = 1.564, p = 0.222, df = 3, 26). This reflects similarity of diet, with orthopteran faunivores preferentially eating chitinous insects rather than softer food, such as oligochaetes (ElEla et al, 2010; Gangwere, 1967). In both invertebrates and vertebrates, graminivores have the lowest PC1 scores of any dietary category (Figure 3).…”

Section: Discussionmentioning

confidence: 99%

“…Our analysis is based on 45 species of extant orthopterans. Orthopterans are ideal for testing our hypotheses because diets of many taxa are well categorised on the basis of in situ field observations, differential feeding experiments, and crop and faecal analysis (ElEla et al, 2010; Gangwere, 1967; Gangwere et al, 1976; Gangwere et al, 1998; Gangwere & Spiller, 1995; Kang et al, 1999). Our analysis is based on the entire gnathal edge, from the pars incisor to the pars molaris, of the left mandibles removed from dry museum specimens (Figure 1), selecting the best preserved of the available specimens representing the final instar.…”

Section: Methodsmentioning

confidence: 99%

Dietary inference from dental topographic analysis of feeding tools in diverse animals

et al. 2022

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1. Understanding the relationship between form, function and diet in feeding structures is critical to constraining the roles of organisms in their ecosystem and adaptive responses to food resources. Yet, analysis of this relationship in invertebrates has been hampered by a reliance on descriptive and qualitative characterisation of the shapes of feeding structures. This has led to a lack of robust statistical analyses and overreliance on analogy and plausibility, especially for extinct taxa and animals that are hard to observe feeding.2. Here we test the efficacy of dental topographic metrics in quantification of form in invertebrate mandibles and assess their relationship with diet. Specifically, we analyse the mandibles of 45 species of extant orthopterans. Orthopterans' wellconstrained diets make them an ideal model system for our study.3. We find that topographic metrics applied to Orthoptera successfully recover the same relationship between dietary intractability and dental tool morphology as they do in mammals, and that combination of individual metrics in multivariate analysis most strongly captures this relationship. Furthermore, multivariate topographic metrics calibrated to the food consumed by mammals accurately predict dietary differences between orthopterans (82% taxa correctly assigned). 4. Our results demonstrate that these metrics can be used in quantitative analysis and comparison of non-homologous mouthparts to reliably investigate the relationship between diet, form and function of feeding tools across Bilateria. We anticipate that this will facilitate more rigorous ecological analysis of fossil and historical material, providing new methods to investigate adaptive responses and community-level interactions through time.

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“…Of the known insect pests, we found only fruit flies (Drosophila ananassae) in the diet of the mongooses we sampled. These species are known for their destructive behavior in agriculture (ElEla et al 2013;Karremans et al 2015); therefore, controlling their populations should benefit farmers. However, we also found that the Javan mongoose tended to consume flower ants (Monomorium floricola) which prey on the eggs of other insects.…”

Section: Discussionmentioning

confidence: 99%

“…Overall, a substantial proportion of the insect species detected in the mongoose feces was composed of scavengers, as evidenced by metabarcoding. Bush crickets (Hexacentrus japonicus and Mecapoda elongata), moths (Monopis monachella and M. pavlovski), and flies (Psychoda alternata, Hemipyrellia liguriens, and Lucilla sinensis) are known to prey upon dead organisms, either at the larval or adult stages (Elbardicy et al 2009;ElEla et al 2013;Hinton 1956;Kurahashi et al 1997;Robinson and Pratt 1975;Turbanova et al 2019;Way and Khoo 1992). The wide variety of insects in their feces may be due to the generalist trait of the mongoose or the methodological weakness in our study.…”

Section: Discussionmentioning

confidence: 99%

Identifying prey of the Javan mongoose (Urva javanica) in Java from fecal samples using next-generation sequencing

et al. 2020

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show abstract

Mandibular structure, gut contents analysis and feeding group of orthopteran species collected from different habitats of Satoyama area within Kanazawa City, Japan

Cited by 9 publications

References 24 publications

High‐resolution food webs based on nitrogen isotopic composition of amino acids

High‐resolution food webs based on nitrogen isotopic composition of amino acids

Dietary inference from dental topographic analysis of feeding tools in diverse animals

Identifying prey of the Javan mongoose (Urva javanica) in Java from fecal samples using next-generation sequencing

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