Ecological aspects of a Cosmopolites sordidus (Germar) (Coleoptera: Curculionidae) population in São Miguel do Iguaçu, PR.

Authors

  • Tânia Mari Vicentini Prestes Centro Federal de Educação Tecnológica do Paraná
  • Agostinho Zanini Centro Federal de Educação Tecnológica do Paraná
  • Luis Francisco Angeli Alves Universidade Estadual do Oeste do Paraná
  • Antonio Batista Filho Instituto Biológico
  • Cristiane Rohde Universidade Federal de Lavras

DOI:

https://doi.org/10.5433/1679-0359.2006v27n3p333

Keywords:

Insecta, Population fluctuation, Integrated management.

Abstract

The population dynamics of Cosmopolites sordidus (Germar) was studied in banana crops (cultivar Nanicão) at São Miguel do Iguaçu, PR, using roof-tile-like baits, between June/2003 and May/2004. Adults infected by entomopathogenic fungi were recorded, and predators were also found on the baits. A comparative bioassay was carried out between the Beauveria bassiana isolate obtained from the experiment area and from other regions in Brazil against C. sordidus adults. The population peaks of C. sordidus adults occurred in June and July, a period with mild temperatures and low precipitation. The population of C. sordidus larvae, however, was concentrated in December. The insect predators found in the area were insects of the following orders: Coleoptera (Carabidae), Dermaptera (Forficulidae), Hemiptera (Reduviidae), Hymenoptera (Formicidae), and spiders of the families Ctenidae, Clubionidae, and Lycosidae, with a population peak two months after the pest population peak. A low number of C. sordidus adults infected by B. bassiana was found, with an annual mean of 0.44%. In the laboratory, the B. bassiana isolates were pathogenic to the insects.

 

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Author Biographies

Tânia Mari Vicentini Prestes, Centro Federal de Educação Tecnológica do Paraná

Professores do Centro Federal de Educação Tecnológica do Paraná. Medianeira, PR.

Agostinho Zanini, Centro Federal de Educação Tecnológica do Paraná

Professores do Centro Federal de Educação Tecnológica do Paraná. Medianeira, PR.

Luis Francisco Angeli Alves, Universidade Estadual do Oeste do Paraná

Universidade Estadual do Oeste do Paraná/CCBS, Laboratório de Zoologia. Cascavel. E-mail: lfaalves@unioeste.br. Bolsista de Produtividade em Pesquisa, CNPq.

Antonio Batista Filho, Instituto Biológico

Instituto Biológico, São Paulo.

Cristiane Rohde, Universidade Federal de Lavras

Programa de Mestrado em Entomologia, Universidade Federal de Lavras, Departamento de Entomologia.

Published

2006-06-30

How to Cite

Prestes, T. M. V., Zanini, A., Alves, L. F. A., Batista Filho, A., & Rohde, C. (2006). Ecological aspects of a Cosmopolites sordidus (Germar) (Coleoptera: Curculionidae) population in São Miguel do Iguaçu, PR. Semina: Ciências Agrárias, 27(3), 333–350. https://doi.org/10.5433/1679-0359.2006v27n3p333

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