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      Parasitizing behavior of Cervellus piranga Penteado-Dias (Hymenoptera, Braconidae, Braconinae) on papaya borer weevil Pseudopiazurus obesus Marshall (Coleoptera, Curculionidae)

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          Abstract

          Parasitizing behavior of Cervellus piranga Penteado-Dias (Hymenoptera, Braconidae, Braconinae) on papaya borer weevil Pseudopiazurus obesus Marshall (Coleoptera, Curculionidae). The papaya borer weevil Pseudopiazurus obesus is a pest associated with papaya crops in Brazil and Cervellus piranga is a naturally-occurring parasitoid which may contribute to regulate populations of this pest. We aimed at describing the parasitizing behavior of the parasitoid C. piranga on papaya borer weevil P. obesus larvae under field conditions. The sequence of events related to the parasitizing behavior of C. piranga is similar to other braconid species and includes the location and recognition of the attacked host plant followed by walks on the host plant and touching it with the tip of the antennae and the ovipositor. In the following event, the parasitoid assesses the suitability of the host by speeding up antennae and ovipositor movements. After locating and accepting the host, the parasitoid remains inactive on oviposition aperture sites and starts moving the antennae. Afterwards, the parasitoid inserts its ovipositor and starts cleaning it repeatedly. The female of C. piranga inserts the ovipositor through the hole and lay one egg into the papaya weevil borer. After oviposition, the female cleans continuously both ovipositor and antennae before leaving to forage for a new host.

          Translated abstract

          Comportamento de parasitismo de Cervellus piranga Penteado-Dias (Hymenoptera, Braconidae, Braconinae) sobre a broca-do-mamoeiro Pseudopiazurus obesus Marshall (Coleoptera, Curculionidae). A broca-do-mamoeiro Pseudopiazurus obesus é uma praga de cultivos de mamão no Brasil e Cervellus piranga é um parasitóide que ocorre naturalmente no campo e pode contribuir para a regulação da população desta praga. O objetivo do presente trabalho foi a descrição do comportamento de parasitismo do parasitoide C. piranga sobre larvas da broca-do-mamoeiro P. obesus em condições de campo. A sequência de eventos relacionados ao parasitismo de C. piranga é similar a outras espécies de braconídeos e inclui a localização e o reconhecimento da planta hospedeira atacada, caminhamento na planta e toque desta com as antenas e o ovipositor. No próximo evento, o parasitoide acessa a adequabilidade do hospedeiro através do aumento dos movimentos da antena e do ovipositor. Após localizar e aceitar o hospedeiro, o parasitoide fica imóvel no sítio de oviposição e inicia a movimentar a antena. Em seguida, o parasitoide insere o ovipositor e o limpa repetidamente. A fêmea de C. piranga insere o ovipositor através da abertura e deposita um ovo na broca-do-mamoeiro. Após a oviposição, a fêmea limpa continuamente o ovipositor e a antena e abandona a planta para um novo forrageamento.

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          Most cited references17

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          Plant Kairomones in Insect Ecology and Control

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            The role of parasitic Hymenoptera in integrated pest management in fruit orchards

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              Host vibration–a cue to host location by the parasite, Biosteres longicaudatus

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbent
                Revista Brasileira de Entomologia
                Rev. Bras. entomol.
                Sociedade Brasileira De Entomologia (São Paulo )
                1806-9665
                December 2011
                : 55
                : 4
                : 612-614
                Affiliations
                [1 ] Embrapa Tabuleiros Costeiros Brazil
                [2 ] Universidade Federal do Paraná Brazil
                [3 ] Universidade Federal de São Carlos Brazil
                Article
                S0085-56262011000400019
                fbd8289f-07c5-4e50-ad3c-293bdf6769a7

                http://creativecommons.org/licenses/by/4.0/

                Product
                Product Information: website
                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0085-5626&lng=en
                Categories
                ENTOMOLOGY

                Entomology
                Kairomones,parasitoid,papaya pest,plant volatiles,sinomones,Cairomônios,parasitoide,praga do mamão,sinomônios,voláteis de plantas

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