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Revista de Biología Tropical

versión On-line ISSN 0034-7744versión impresa ISSN 0034-7744

Resumen

MATOS NETO, Fausto da Costa et al. Ganancia de peso del depredador Podisus distinctus (Heteroptera: Pentatomidae) en combinaciones de las presas Tenebrio molitor (Coleoptera: Tenebrionidae) y Musca domestica (Diptera: Muscidae). Rev. biol. trop [online]. 2004, vol.52, n.1, pp.101-108. ISSN 0034-7744.

Litlle is known about Podisus distinctus (Stal) (Heteroptera: Pentatomidae) one of the Asopinae species with good possibilities for mass rearing and releasing against defoliator caterpillars in eucalyptus reforested areas in Brazil. We evaluated the impact of prey combinations on weight of nymphs and adults of P. distinctus. The prey were Musca domestica L. (Diptera: Muscidae) and Tenebrio molitor L. (Coleoptera: Tenebrionidae). The experiment was developed under 25 ± 0.5ºC, 60 ± 10% R.H. and photophase of 14 hr, with nymphs of P. distinctus individualized in Petri dishes and fed as: T1- larvae of M. domestica during its whole nymphal phase; T2- larvae of M. domestica during its II instar and of T. molitor during the other instars; T3- larvae of M. domestica during II and III instars and of T. molitor during the other instars; T4- larvae of M. domestica during II, III and IV instars and of T. molitor during the V instar; T5- larvae of T. molitor during all instars. P. distinctus presents lower weight when fed with larvae of M. domestica. For this reason it is recommended to feed P. distinctus with T. molitor during its whole nymphal phase or with larvae of M. domestica only during II and III instars and T. molitor during IV and V instars

Palabras clave : Asopinae; alternative prey; biological control; mass rearing; insect diet.

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