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Article Dans Une Revue Entomologia Experimentalis et Applicata Année : 2004

Interspecific competition among urban cockroach species

Résumé

The aim of this study was to quantify and to compare the effects of intraspecific and interspecific competition among pairs of urban cockroaches [Blatta orientalis L., Periplaneta americana (L.), and Periplaneta australasiae Fabricius (Dictyoptera: Blattodea)] in relation to the limitation of resources such as shelter or food. Our approach was to assess whether the presence of one species affected the resource exploitation of another. A reduction in access to shelters or to food for one species revealed dominant/subordination relationships among species and induced spatial segregation in shelters and temporal segregation during food exploitation. The fragmentation of available resources facilitated spatial segregation and the access of more individuals of the subordinate species. Individuals of each species were aware of the presence of non-conspecifics. The outcome of interspecific competition under laboratory conditions should help us to understand how segregated spatial distributions occur under natural conditions in urban areas.

Dates et versions

hal-01320067 , version 1 (23-05-2016)

Identifiants

Citer

Stéphane Boyer, Colette Rivault. Interspecific competition among urban cockroach species. Entomologia Experimentalis et Applicata, 2004, 113 (1), pp.15--23. ⟨10.1111/j.0013-8703.2004.00200.x⟩. ⟨hal-01320067⟩
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