الفهرس 
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Abstract
I’ Trophic-dynamic aspect of ecology has resulted in a number of studies on the
bioenergetics of consumer species, usually in the laboratory where metabolic
parameters may be precisely measured. Such information can then be extrapolated
to field situations, not only for the species in question, but for ecologically similar
groups(Welch, 1968).
A great deal of work has been done on the energy budget or some parts of
it in various species of insects (see for example Park and Buck, 1960; Brody, 1964;
Conover, 1966; Fischer, 1966; Chlodny et al., 1967; Gromysz-Kalkowska, 1967;
Guerra and Cochran, 1970; Huebner, 1973; Hagvar, 1975; Swift, 1976; Cairns, 1978;
Ziserand Nettles, 1979; Hegazi and Schopf, 1984; Williams and Richardson, 1984;
Boccardoand Pentado, 1986 and Martin, 1991).
The larvae of cyclorrhaphous Diptera occupy diverse habitats and are well
adapted to develop in rapidly decaying media such as carrion or for facultative or
obligateparasitism of animals. Several modifications enhance the adaptative success
ofthese larvae, including a short feeding period, rapid growth rate, modified digestive
enzymes,high metabolic rate and a small number of larval instars (Roback, 1951;
Zdarek and Slama, 1972). The present study deals with the energetics of two
forensicallyimportant flies namely; the house fly Musca domestica vicina Macquart
and the blow fly Lucilia sericata Meigen. The house fly M. domestica persists as a
ubiquitouspest of humans and of domestic livestock throughout much of the world,
inpart, because of the ability of the immature stages (maggots) to develop.