Influence of protein on feeding behavior of Ceratitis capitata Wiedemann (Diptera: Tephritidae): comparison between immature males and females

Abstract

Influência da Proteína no Comportamento de Alimentação de Ceratitis capitata Wiedemann (Diptera:Tephritidae): Comparação Entre Fêmeas e Machos Imaturos RESUMO -O objetivo deste trabalho foi comparar a influência da proteína na performance e no comportamento alimentar de fêmeas e machos imaturos de Ceratitis capitata (Wiedemann). A fonte de proteína utilizada foi a levedura de cerveja nas concentrações de 6,5 g e 1,5 g por 100ml de água. Foi avaliada a influência da proteína nos seguintes parâmetros: porcentagem de emergência, duração do ciclo de vida, tamanho do adulto, consumo de dietas, seleção de dietas e limiar de discriminação para a levedura. Os resultados indicaram que na fase imatura machos e fêmeas apresentam exigência protéica similar para performance adequada. Ambos sexos apresentaram comportamento alimentar semelhante, escolhendo sempre dietas contendo maior quantidade de proteína. O limiar de discriminação para a levedura nos imaturos de ambos os sexos foi 0,4 g/100 ml de água. Com base nos resultados aqui apresentados, é possível inferir que os machos de C. capitata apresentam exigência protéica similar à das fêmeas em sua fase imatura. PALAVRAS-CHAVE: Dimorfismo sexual de tamanho, mosca-das-frutas, comportamento alimentarABSTRACT -The objective of this work was to compare the influence of dietary protein on performance and feeding behavior of immature males and females of Ceratitis capitata (Wiedemann). The protein source was beer yeast at 6.5 and 1.5 g.100 ml -1 . The following parameters were evaluated: percentage of emergence, total life cycle, adult size, diet consumption, feeding preference and discrimination threshold for yeast. Immature adults showed similar protein requirements regardless of sex. Both males and females showed similar feeding behavior, preferring to feed on the diet with higher protein content. The discrimination threshold for levedure in both sexes was 0.4 g.100 ml -1 . We concluded that immature males of C. capitata show similar protein requirements as the immature females.

Sexual behaviour of the Mediterranean fruit fly (Diptera: Tephritidae): the influence of female size on mate choice

“…Larger females would be more selective in terms of their mate choices. The females of this species always have larger body sizes relative to the males fed the same diet (whether of high or low protein content) (Plácido‐Silva et al. 2005).…”

“…Larger females would be more selective in terms of their mate choices. The females of this species always have larger body sizes relative to the males fed the same diet (whether of high or low protein content) (Plá cido- Silva et al 2005). This pattern of sexual dimorphism is characterized by the occurrence of larger females and is common among invertebrates and is associated with higher fertility rates among females with larger absolute body sizes (Darwin 1871; Anderson 1994).…”

From Chemicals to IPM Against the Mediterranean Fruit Fly Ceratitis capitata (Diptera, Tephritidae)

“…The principle of masstrapping is to capture the maximum of flies in a region by means of traps baited by food attractants. The attractants commonly used were hydrolysates of proteins, as females of medfly and especially the immature, are attracted by such component to mature their eggs (Placido-Silva and al., 2005;Quilici and al., 2004). For this first experience the attractant used was the Diammonium Phosphate (DAP) well known as a fertilizer by the farmers.…”

Potential of locally sustainable food baits and traps against the Mediterranean fruit fly Ceratitis capitata in Bolivia

“…Commercially‐available fermentation substrates and protein hydrolysates are commonly used to attract C. capitata and other tephritid species for monitoring or pest control . These lures contain important food resources and amino acids needed by the flies for sexual maturation and egg development, and often are comprised of substrates such as fermenting sugar baits, yeast, by‐products from the brewing industry, and proteins modified by hydrolysis (hydrolyzed proteins) singly or in combination . Coarse protein‐based products in the form of hydrolyzed yeast ( e.g .…”