Competition, cooperation, and parental effects in larval aggregations formed on carrion by communally breeding beetles Necrodes littoralis (Staphylinidae: Silphinae)
作者机构：Department of Animal Taxonomy and EcologyAdam Mickiewicz UniversityPoznańPoland Laboratory of CriminalisticsAdam Mickiewicz UniversityPoznańPoland Wielkopolska Centre for Advanced TechnologiesAdam Mickiewicz UniversityPoznańPoland
出 版 物：《Insect Science》 (昆虫科学（英文版）)
年 卷 期：2024年第31卷第6期
页 面：1918-1929页
核心收录：
基 金：funded by the National Science Centre of Poland(grant no.2021/41/B/NZ8/00474)
主 题：carrion group-size effect intraspecific interactions larval societies
摘 要：Aggregations of juveniles are dominant forms of social life in some insect *** societies are shaped by competitive and cooperative interactions of the larvae,in parallel with parental *** of necrophagous larvae are excellent systems to study these *** littoralis(Staphylinidae:Silphinae),a carrion beetle that colonizes cadavers of large vertebrates,forms massive juvenile *** spreading over carrion anal and oral exudates,the beetles form the feeding matrix,in which the heat is produced and by which adults presumably affect the fitness of the *** predict that exploitative competition shapes the behavior of *** larvae in their ***,cooperative interactions may also operate in these systems due mainly to the benefits of collective ***,indirect parental effects(i.e.,formation of the feeding matrix)probably modulate larval interactions within the *** manipulating parental effects(present/absent)and larval density(0.02−1.9 larvae/g of meat),we found a strong negative group-size effect on fitness components of ***,in colonies with parental effects over almost the entire density range,and in colonies without parental effects for densities larger than 0.5 larva/*** was accompanied by positive group-size effects in terms of development time(it shortened with larval density)and thermogenesis(it increased with larval density).A pronounced positive group-size effect on juvenile fitness was found only in colonies without parental effects and only in the low-density *** results support the hypothesis that larval societies of *** are shaped by exploitation competition.
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