Residence advantage in heterospecific territorial disputes of Erythrodiplax Brauer species (Odonata, Libellulidae)

Revista Brasileira de Entomologia

Daniela Chaves Resende¹ 

[1] ,Universidade Federal de Viçosa Departamento de Biologia Geral Laboratório de Bioinformática e EvoluçãoViçosa MG ,Brasil

关键词: Asymmetry;    hierarchy;    interspecific competition;    territoriality;    Assimetria;    competição inter-específica;    hierarquia;    territorialidade;   

DOI  :  10.1590/S0085-56262010000100014

来源: SciELO

【 摘 要 】

Residence advantage in heterospecific territorial disputes of Erythrodiplax Brauer species (Odonata, Libellulidae). Territories are the outcome of interactions determining where and how long individuals settle. To odonate species, aggressive disputes are not so common since the outcome can be predetermined by advantages such as residency, age, and body size. However, it is possible to predict that at heterospecific disputes, larger body-sized or more aggressive species have some profits overcoming these individual advantages, generating patterns of species hierarchy. Here, I studied the aggressiveness of five Erythrodiplax species (Odonata, Libellulidae) during territorial disputes and verified if larger body-sized species are more aggressive than smaller ones or if the residence advantage prevails on the heterospecific disputes. Larger species were not more aggressive than smaller ones and winners of intra- and interspecific territorial disputes were defined mainly by the residence. So, the residence advantage between heterospecific opponents appears to prevail over any other asymmetry among these species. This pattern may occur because, despite the territorial behaviour in dragonfly males, heterospecific disputes may not increment male reproductive success because it may not increase their access to females.

【 授权许可】

CC BY-NC-ND   
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