Sexuality is initiated by an environmental stimulus that induces amictic (female-producing) females to produce mictic (male-producing) daughters.
Well-fed, amictic females produce typical, thin-shelled amictic eggs that are subitaneous and develop without arrest into females.
In the present study, we experimentally test several hypotheses regarding the nature of the food-limitation stimulus that induces diapausing amictic eggs in S.
Under these conditions, the food concentration remains high, and amictic females produce only subitaneous eggs.
reflexa on its tendency to produce diapausing amictic eggs.
Again survivorship, as well as the number and type of amictic eggs produced, were recorded daily.
Any females later proving to be mictic instead of amictic females were discarded.
Snell (1986) found that the number of offspring produced by amictic, but not mictic, females of this species increased continuously between 18 [degrees] and 38 [degrees] C.