Greater fitness of middle aged females in monomorphic and polymorphic strains of Drosophila ananassae
نویسنده
چکیده
Monomorphic (inversion free) and polymorphic (with inversion) strains of Drosophila ananassae established from out-bred population collected at Mysore have been used to study female age influence on fecundity, fertility, and ovariole number. It was noticed that polymorphic strains had greater fecundity, fertility, and ovariole number than monomorphic strains. It was also noticed that in both monomorphic and polymorphic strains middle aged females had significantly greater fecundity, fertility, ovariole number than young or old aged females. Thus, in D. ananassae middle aged females had higher reproductive fitness than young or old aged females, which is independent of inversion system.
منابع مشابه
Length of feeding breaks in larvae of six species of the mesophragmatica group of Drosophila
Male age influence on fecundity and fertility has been studied in monomorphic (inversion free) and polymorphic (with inversion) strains of Drosophila ananassae. It was noticed that in both monomorphic and polymorphic strains, females mated to old males showed greater fecundity and fertility than females mated to young or middle aged males. Thus, in D. ananassae male age effect on fitness is ind...
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