Abstract

Daily observations of marked Aulocara elliotti (Thomas) at various sex ratios in cages in the greenhouse and outdoors were conducted over a 10-week period. The general mating habits of the species are described. A test for independence in mating preference in each cage revealed evidence that only 3 of the 20 cages were nonindependent at the 5% level of significance. In both study groups, the copulation frequency per male increased as the ratio of males to females decreased, possibly because of reduced competition among the males and/or to the increased availability of females which afforded greater opportunity for mating. High sexual activity by females at certain sex ratios caused reduced egg production in both groups. Males isolated from females exhibited homosexuality accompanied by occasional aggressiveness.

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