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Nutritional balancing in fruit flies: performance of wild adult females of Anastrepha obliqua (Diptera: Tephritidae) fed on single-food or food-pair treatments.

Authors
  • Medeiros, L1
  • Zucoloto, F S
  • 1 Department of Biology, FFCLRP, University of São Paulo, Avenida dos Bandeirantes, 3900, 14040 901 Ribeirão Preto, SP, Brazil. , (Brazil)
Type
Published Article
Journal
Journal of Insect Physiology
Publisher
Elsevier
Publication Date
Jan 01, 2006
Volume
52
Issue
11-12
Pages
1121–1127
Identifiers
PMID: 17078966
Source
Medline
License
Unknown

Abstract

The aim of the present study was to investigate the effects of different artificial diets, in which sucrose and brewer's yeast were offered separately (food-pair treatment) or mixed (single-food treatment), on the regulation of nutrient ingestion and the performance of wild adult females of Anastrepha obliqua. The amount of diet consumed by females of A. obliqua increased as the concentration of yeast in the diet increased, revealing a phagostimulant effect of yeast. The amount of sucrose ingested was constant in all groups, showing that these flies regulate the ingestion of sucrose. Longevity and production of eggs/female were similar in both groups. Our results suggest that A. obliqua females regulate the ingestion of nutrients to obtain an adequate performance. Dietary self-selective behavior was more efficient for the females of A. obliqua than feeding on a single-food, because the self-selecting flies ingested less food and had a similar performance as the ones fed on the single-food treatment.

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