Sexual Differential in Time of Hatch of Eggs of the Gypsy Moth1

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Abstract:

In nature, adult males of the gypsy moth, Porthetria dispar (L.), emerge first. The difference in time of emergence of males and females is less than would be predicted on the basis of laboratory studies on the rates of development of both sexes. This fact suggested that female larvae might hatch prior to male larvae. By collecting larvae as they hatched in nature, and rearing them in the laboratory, it was found that the first larvae to hatch were primarily females, the last primarily males. The earlier hatch of females might be a reflection of their faster rate of development. It is suggested that there might be some selective advantage for the differential in time of hatch of gypsy moth eggs to reduce the interval between adult male and female eclosion.

Document Type: Research Article

Publication date: June 1, 1968

More about this publication?
  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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