Behavioral Ecology and Sociobiology

, Volume 25, Issue 4, pp 237–246 | Cite as

Effects of spermatophores on male and female monarch butterfly reproductive success

  • Karen S. Oberhauser


I present the results of experiments designed to measure the effects of spermatophores produced by male monarch butterflies on male and female reproductive success. There was wide variation in the number of matings by captive males, suggesting the potential for strong sexual selection on males. Male lifespan was not affected by total number of matings, nor did it differ between males that were allowed to mate and those not exposed to females. Two effects of spermatophores on female behavior or fecundity are reported; (1) Females that received large spermatophores delayed remating longer than those receiving small ones. (2) Females allowed to mate several times laid more eggs than singly-mated females. The relative importance of these effects is discussed in relation to monarch mating patterns.


Reproductive Success Sexual Selection Mating Pattern Female Behavior Female Reproductive Success 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag 1989

Authors and Affiliations

  • Karen S. Oberhauser
    • 1
  1. 1.Department of Ecology and Behavioral BiologyUniversity of MinnesotaMinneapolisUSA

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