Published in
Sociedade Brasileira De Entomologia, Revista Brasileira de Entomologia, 4(56), p. 515-518
DOI: 10.1590/s0085-56262012000400020
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Biological characteristics of Telenomus alecto and Trichogramma galloi reared on eggs of the sugarcane borer Diatraea flavipennella
,
Nivia da Silva Dias-Pini,
Sônia Maria Forti Broglio,
Broglio,Sônia Maria Forti,
S. S. Costa,
Simone da Silva Costa,
Santos,Jakeline Maria Dos,
Jakeline Maria dos Santos,
Guzzo,Elio Cesar,
Elio Cesar Guzzo
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Abstract
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.