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Copulation in Colias eury theme (Lepidoptera: Pieridae): patterns and frequency
Author(s) -
Rutowski R. L.,
Gilchrist G. W.
Publication year - 1986
Publication title -
journal of zoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.915
H-Index - 96
eISSN - 1469-7998
pISSN - 0952-8369
DOI - 10.1111/j.1469-7998.1986.tb03569.x
Subject(s) - spermatophore , biology , pieridae , lepidoptera genitalia , mating , zoology , sperm competition , butterfly , sperm , ecology , botany
During copulation in the alfalfa butterfly, Colias eurytheme , a male fills two sacs in the female's reproductive tract. The appendix bursae is filled first with a white milky fluid and then the corpus bursae is filled with a spermatophore that contains the sperm and other materials. The sperm are deposited last in the female's reproductive tract. Recently‐mated males produce less material during copulation and copulate for much longer times. Large males pass more material and old males copulate for longer times. Variation in the duration of copulations observed in the field suggests that males mate about once every five days. A release‐recapture experiment with virgin females indicates a similar mating frequency for that sex. The discussion relates these data to the known patterns of mate choice and reproductive behaviour in butterflies and moths.