First record of larvae of Chironomidae (Insecta, Diptera) as prey of Temnocephala sp. (Platyhelminthes, Temnocephalidae), an ectosymbiont on larvae of Corydalidae (Megaloptera)

Revista Brasileira de Entomologia

Susana Trivinho-strixino²  Fabio Laurindo Da Silva¹  Francisco Valente-neto¹ 

[1],Universidade Federal de São Carlos Departamento de Hidrobiologia Laboratório de Ecologia de InsetosAquáticosSão Carlos SP ,Brazil

关键词: Commensalism;    Corydalus;    predation;    Protochauliodes;    Comensalismo;    Corydalus;    predação;    Protochauliodes;   

DOI  :  10.1590/S0085-56262012005000046

来源: SciELO

【 摘 要 】

First record of larvae of Chironomidae (Insecta, Diptera) as prey of Temnocephala sp. (Platyhelminthes, Temnocephalidae), an ectosymbiont on larvae of Corydalidae (Megaloptera). This study constitutes the first record of Temnocephala Blanchard, an ectosymbiont on Corydalidae, as a possible predator of chironomid larvae. Twenty-eight Corydalidae larvae (Corydalus and Protochauliodes) were examined under stereomicroscopic in search for Temnocephala and Chironomidae larvae, of which five megalopteran larvae had 24 Temnocephala sp. associated. Furthermore, eight of these Temnocephala worms had chironomid larvae in their gut contents, an interaction previously unknown. Gut content analyses revealed Corynoneura as the commonest chironomid, but larvae of Larsia, Rheotanytarsus and Tanytarsus were recorded as well. This study included Corydalus and Protochauliodes as hosts for Temnocephala, which might be important for this worm dispersion and population dynamics.

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