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REDUCTION IN THE NUTRITIONAL REQUIREMENTS FOR OÖGENESIS DUE TO HIGH CONCENTRATIONS OF CHOLESTEROL IN THE LARVAL DIET OF THE STABLE FLY, STOMOXYS CALCITRANS (DIPTERA: MUSCIDAE)

Published online by Cambridge University Press:  31 May 2012

Loo-Sar Chia ,
James A. Baxter  and
Paul E. Morrison
Loo-Sar Chia
Affiliation:
Department of Biology, University of Waterloo, Waterloo, Ontario N2L 3G1
James A. Baxter
Affiliation:
Department of Biology, University of Waterloo, Waterloo, Ontario N2L 3G1
Paul E. Morrison
Affiliation:
Department of Biology, University of Waterloo, Waterloo, Ontario N2L 3G1
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Abstract

Female stable flies, Stomoxys calcitrans (L.), from larvae reared on the standard CSMA (Chemical Specialties Manufacturing Association) medium required 5 days of blood feeding before producing their first batch of eggs. When the larval medium was supplemented with 1 or 2% cholesterol, resultant females were able to produce mature eggs after only 4 days of blood feeding. Females from larvae reared on the 2% cholesterol-supplemented medium had slight but significant precocious follicular growth at the time of emergence from the puparium. When blood feeding was restricted, the size at which follicular growth ceased was consistently higher in females fed the cholesterol-supplemented diets as compared with control females.

Résumé

Des femelles de la mouche piquante des étables, Stomoxys calcitrans (L.), provenant de larves élevées sur le milieu standard CSMA (Chemical Specialties Manufacturing Association) ont eu besoin de cinq jours d'alimentation à partir de sang avant de produire un premier lot d'oeufs. L'ajout de 1 ou 2% de cholestérol au milieu larvaire a permis aux femelles obtenues de produire des oeufs matures après seulement quatre jours de consommation de sang. Les femelles obtenues de larves élevées sur du milieu comportant 2% de cholestérol en supplément ont montré une précocité légère mais significative de leur croissance folliculaire au moment de la sortie du puparium. Lorsqu'une restriction fût imposée à la consommation de sang, on a observé chez les femelles élevées sur les milieux supplémentés au cholestérol, que la taille atteinte à la fin de la croissance folliculaire était systématiquement plus grande que chez les femelles témoins.

Type
Articles
Information
The Canadian Entomologist , Volume 116 , Issue 6 , June 1984 , pp. 801 - 804
Copyright
Copyright © Entomological Society of Canada 1984

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