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ABSTRACT. ESfUDIES ON SOME ASPECTS OFTHE ALIMENTATION OF ASCIA MONUSTE GODART (LEPIDOPTERA, PIERlDAE). Six kinds of crucifer (broccoli, cabbage, calinower, kale, mustard and rugula) were tested, as food, for larvae od Aseia monuste. The best results were obtained eith calinower, broccoli, rugula and kale. Four sugars (glucose, fructose, sucrose and maltose) were tested to know their innuence on the number of oviposition in female of Asela monuste. The best results were obtained with fructose , glucose and sucrose.KEY WORDS. Lepidoptera, Pieridae, Aseia monuste, alimentation A performance de qualquer espécie animal depende entre outros fatores, da qualidade e quantidade dos alimentos ingeridos. Nos insetos, a alimentação na fase imatura vai influenciar a variação de peso, o tempo para o desenvolvimento, a sobrevivência, a composição química do corpo e o tamanho do adulto. Na fase adulta, a alimentação é importante para a produção de óvulos, habilidade no cruzamento, sobrevivência e capacidade para dispersão. Em muitas espécies a alimentação na fase imatura influencia vários aspectos da fase adulta; se, por exemplo, a alimentação na fase imatura não for adequada, o adulto poderá emergir, se emergir, retardatariamente, com tamanho reduzido e sem nutrientes estocados, entre outros aspectos. A emergência retardatária poderá desincronizar o adulto em relação à hospedeiros; o tamanho reduzido e a falta de nutrientes estocados poderão prejudicá-los, em relação a produção de feromonas, que afetará a competição por parceiros sexuais,

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-The oviposition preference and larval performance of females of Ceratitis capitata (Wiedemann) were examined. Wild or laboratory-reared females were tested for oviposition preference in relation to papaya fruit in different stages of ripeness, as well as to two different fruits: papaya and apple. The results demonstrated that both laboratory-reared and wild females preferred ripe papaya fruit compared to unripe fruit for oviposition, and that ripe papaya was the best for larval performance. When oviposition preference was tested with different fruits (papaya and apple), both wild and laboratoryreared larvae developed better in papaya. However, only wild females showed a preference for oviposition on papaya as opposed to apple. Laboratory-reared females showed no oviposition preference on fruits that resulted in better larval performance.

Neotropical Entomology 33(5): 557-562 (2004) PALAVRAS-CHAVE: Comportamento de oviposição, seleção de hospedeiros, mosca-das-frutas, ausência dos machosABSTRACT -Few works have studied in detail the types of nutrients associated to hosts which are attractive to females of Anastrepha obliqua (Macquart) and influence the choice of the oviposition site. The relationship of the males in the physiology and in the behavior of those females has also been scarcely studied and some ecological relationships seem to be quite important for the knowledge of this species' biology. Our objective in this study was to evaluate the discriminatory behavior of A. obliqua between oviposition sites containing different nutrients. The presence of the male and the nutritional status of the female were also considered in this work. Two experiments were developed: in the first, the preference of A. obliqua females between artificial oviposition substrates was evaluated; in the second, females were submitted to two types of artificial oviposition substrates in the presence and in the absence of males and were fed either on a poor diet or on an adequate diet concerning sucrose concentration. In the first experiment, A. obliqua showed higher preference for substrates containing brewer's yeast and sucrose. Substrate containing only yeast was the second most accepted. Offspring development and adult feeding may have determined the choice for the substrate containing brewer's yeast and sucrose. In addition, the presence of protein in the brewer's yeast may indicate nutritional quality to the females in a more accurate way than the sucrose. In the second experiment, the brewer's yeast was the most accepted by the females. The male absence was also an important factor in the selection of hosts and in the egg production of A. obliqua.

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Valor nutritivo de algumas dietas artificias para Anastrepha obliqua (Diptera, Tephritidae). Algumas dietas artificias, em diferentes concentrações, foram testadas e sua eficiência foi calculada a partir do peso das pupas, do tempo para apupar e da porcentagem de empupação. Os melhores resultados foram obtidos com fermento 4,5 g/ 150 ml de dieta; os outros produtos testados foram: germe de trigo, feijão soja, leite em pó e aveia.