Medfly courtship duration: a sexually selected reaction norm changed by crowding
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Date
1998-10Author
Briceño Lobo, Daniel
Eberhard Chabtree, William G.
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The evolutionary effects of crowding on male courtship behavior were
studied using wild and mass-reared medflies. Mass-reared strains had been raised
under highly crowded conditions in mass-rearing facilities for approximately
75, 180, and 238 generations. Pre-mounting courtship was facultatively shortened
in both wild and mass-reared males under conditions of greater crowding.
The courtship behavior of males of mass-reared strains was also shorter than
that of wild males under similar conditions of crowding. Shorter courtships are
probably advantageous for males in crowded conditions because they reduce the
likelihood of the courtship being interrupted by other flies. Several types of data
indicated that males rather than females were responsible for shortened courtships.
We conclude that heritable variation in male courtship behavior has persisted
in a wild population despite its overall relatively low genetic variability,
and that genetic changes in mass-reared strains have altered the range of facultative
adjustments in courtship behavior.
External link to the item
10.1080/08927014.1998.9522850
http://160.111.252.33/dspace/bitstream/10088/18755/1/stri_1998_Medfly_courtship_eberhard_William.pdf
artículo científico (arbitrado)--Universidad de Costa Rica. Escuela de Biología, 1998
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