Can morphological and behavioral traits predict the foraging and feeding dynamics of social arachnids?  

作　　者：Renan F.MOURA Everton TIZO-PEDROSO Kleber DEL-CLARO 

机构地区：[1]Laboratório de Ecologia Comportamental e de Interaçōes,Instituto de Biologia,Universidade Federal de Uberlândia,Uberlândia,MG,38402-020,Brazil [2]Centro de Ensino e Aprendizado em Rede,Universidade Estadual de Goiás,Anápolis,GO,75123-315,Brazil

出　　处：《Current Zoology》2021年第2期183-190,共8页动物学报（英文版）

基　　金：This study was supported by the Coordenação de Aprleicoamento de Pessoal de Nível Superior(CAPES)-Finance Code 001-,the Conselho Nacional de Desenvolvimento Científico e Tecnológico(CNPq),and the Fundacão de Amparo à Pesquisa do FEstado de Minas Gerais(FAPEMIG).

摘　　要：Complex social insect species exhibit task specialization mediated by morphological and behavior-al traits.However,evidence of such traits is scarce for other social arthropods.We investigated whether the social pseudoscorpion Paratemnoides nidificator exhibits morphologically and behav-iorally specialized individuals in prey capture.We measured body and chela sizes of adult pseudo-scorpions and analyzed predation processes.Larger individuals spent more time moving through the colony and foraging than smaller pseudoscorpions.Individuals that captured prey had increased body and absolute chelae sizes.Although larger individuals had relatively small chelae size,they showed a higher probability of prey capture.Larger individuals manipulated prey often,although they fed less than smaller pseudoscorpions.Individuals that initiated captures fed more frequently and for more time than the others.Natural selection might be favoring individuals speci-alized in foraging and colony protection,allowing smaller and less efficient adults to avoid contact with dangerous prey.To our knowledge,there is incipient information regarding specialized indi-viduals in arachnids,and our results might indicate the emergence of a morphologically special-ized group in this species.

关 键 词：altruistic species behavioral ecology cooperative species morphological specialization Pseudoscorpiones social arachnids 

分 类 号：Q95[生物学—动物学]