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Dung preference and trophic association of dung beetles (Coleoptera: Scarabaeidae) in the moist forests of the South-western Ghats of the Indian subcontinent
Journal of Asia-Pacific Entomology ( IF 1.5 ) Pub Date : 2021-06-19 , DOI: 10.1016/j.aspen.2021.06.008
Nithya Sathiandran , P.J. Vineesh , Sabu K. Thomas

First quantitative dung beetle-feeding trophic network analysis for the Oriental region is carried out by investigating trophic network interaction between dung beetles and mammal dung types in the moist forests of the Western Ghats a global biodiversity hot spot in south-western India. Dung-beetle assemblage associated with the dung of the prominent mammals, such as the macaque, boar, gaur, elephant and deer, showed differences in richness, abundance and composition among different dung types. Most dung beetles were generalists with low resource specificity and community-wide generalist feeding on herbivore and omnivore dung types. Dung beetles in the region displayed high species richness and abundance in boar dung. The high attraction and specificity of dung beetles towards the odoriferous boar dung indicate that the omnivore mammal Sus scrofa has a major role in maintaining the dung beetle community in the forests of the Western Ghats. Network interaction analysis shows that the vast majority in the assemblage are generalist species, and the few specialist species were all with low abundance. Low overall specialisation and low resource partitioning with high species richness is recorded in the assemblage. The assemblage's trophic level preference is reflected in the high dung specificity recorded in the omnivore and herbivore dung types.



中文翻译:

印度次大陆西南高止山脉潮湿森林中蜣螂(鞘翅目:金龟科)的粪便偏好和营养关联

通过调查印度西南部全球生物多样性热点西高止山脉潮湿森林中蜣螂与哺乳动物粪便类型之间的营养网络相互作用,对东方地区进行了首次定量蜣螂进食营养网络分析。与猕猴、野猪、野牛、大象和鹿等主要哺乳动物的粪便相关的粪甲虫组合在不同类型的粪便中表现出丰富度、丰度和成分的差异。大多数粪甲虫是具有低资源特异性和全社区范围的通才,以食草动物和杂食动物的粪便类型为食。该地区的蜣螂在野猪粪便中表现出很高的物种丰富度和丰度。蜣螂对有气味的野猪粪便的高度吸引力和特异性表明杂食性哺乳动物Sus scrofa在维持西高止山脉森林中的蜣螂群落方面发挥着重要作用。网络交互分析表明,该组合中绝大多数为通才物种,少数专科物种均为低丰度。在组合中记录了低整体专业化和低资源分配以及高物种丰富度。该组合的营养水平偏好反映在杂食动物和草食动物粪便类型中记录的高粪便特异性中。

更新日期:2021-08-26
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