Marine Biology

, Volume 86, Issue 3, pp 247–252

Mating system of the intertidal copepod Tigriopus californicus

  • R. S. Burton
Article

DOI: 10.1007/BF00397511

Cite this article as:
Burton, R.S. Mar. Biol. (1985) 86: 247. doi:10.1007/BF00397511

Abstract

Male Tigriopus californicus clasp immature females (copepodid stages II–V) for a period of up to a week prior to the female's terminal molt; upon maturation (stage VI) the female is inseminated and released. While females can mate anytime after their terminal molt, experiments using electrophoretically-detected genetic markers indicate that each mates only once in her lifetime. No evidence of sperm displacement was observed. Hence, male mating behavior can be interpreted as pre-copulatory mate guarding, a strategy employed to assure that a potential mate has not been previously inseminated. Males minimize the time investment required to insemiate a single female successfully by preferentially choosing to clasp more developmentally-advanced females; males clasped to stage III females will release them in order to clasp stage V females if the latter are present. Since males are capable of multiple mating, under most conditions of population sex ratio, this mating system results in low availability of unclasped, developmentally-advanced females; consequently, males must clasp successively younger (i.e. developmentally less-advanced) females in order to obtain a successful insemination.

Copyright information

© Springer-Verlag 1985

Authors and Affiliations

  • R. S. Burton
    • 1
  1. 1.Department of BiologyUniversity of PennsylvaniaPhiladelphiaUSA