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Why do males emerge before females?

✍ Scribed by Christer Wiklund; Torbjörn Fagerström

Book ID
104732842
Publisher
Springer-Verlag
Year
1977
Tongue
English
Weight
374 KB
Volume
31
Category
Article
ISSN
0029-8549

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✦ Synopsis

In butterflies and many other insects there is a general tendency for males to emerge before females. This is known as protandry. In this paper we advance the hypothesis that protandry is a reproductive strategy of males, resulting from competition for mates, and should primarily occur in species maintaining female monogamy. Our hypothesis is corroborated by applying a mathematical treatment to a theoretical population with seven defined properties, all of which are argued to be reasonable assumptions for natural populations.

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