Abstract
Randomly selected radiosterilized male Heliothis zea (Boddie) released on the island of St. Croix were examined in the laboratory and found to have sperm of poor viability and quality. Sperm from native males was more viable and fragmented less than sperm from the laboratory-reared males during storage in the spermatheca whether the males were crossed with laboratory or native females. None of 65 laboratory-reared females found remating in the field contained a normal appearing quantity of unfragmented sperm or normal motility. Thus, both sperm quantity and quality influenced remating in the corn earworm female.
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