Biological characteristics of Telenomus alecto and Trichogramma galloi reared on eggs of the sugarcane borer Diatraea flavipennella

Revista Brasileira de Entomologia

Nivia Da Silva Dias-pini²  Sônia Maria Forti Broglio¹  Simone Da Silva Costa¹  Jakeline Maria Dos Santos¹  Elio Cesar Guzzo¹ 

[1] ,Embrapa Agroindústria TropicalFortaleza CE ,Brasil

关键词: Biological control;    egg parasitoid;    parasitism capacity;    Capacidade de parasitismo;    controle biológico;    parasitoide de ovos;   

DOI  :  10.1590/S0085-56262012000400020

来源: SciELO

【 摘 要 】

Diatraea flavipennella (Box) (Lepidoptera, Crambidae) is one of the most destructive pests in sugarcane plantations in the Northeast Region of Brazil. Developmental characteristics and parasitism potential of the egg parasitoids Telenomus alecto Crawford (Hymenoptera, Scelionidae) and Trichogramma galloi Zucchi (Hymenoptera, Trichogrammatidae) were compared with the aim of selecting a suitable species for biological control of D. flavipennella. Both T. alecto and T. galloi developed well and were readily adapted to D. flavipennella eggs as host. Although, T. galloi presented higher viability, with more adults emerging per host egg and higher sex ratio, the developmental period (egg-adult) was shorter in T. alecto and female longevity was extended. In addition, T. alecto exhibited significant higher levels of parasitism during the first three days after emergence than T. galloi. Thus, both parasitoids studied here offer considerable potential for the control of D. flavipennella in sugarcane.

【 授权许可】

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