Genetic assessment of parentage in the caridean rock shrimp Rhynchocinetes typus based on microsatellite markers

Deborah A. Bailie*, Sean Fitzpatrick, Melissa Connolly, Martin Thiel, Rosaleen Hynes, Paulo A. Prodöhl

*Corresponding author for this work

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Over the past decade, the common rock shrimp, Rhynchocinetes typus H. Milne Edwards, 1837, has been the focus of extensive investigations on mating behaviour. The species is now perceived as a model system for the study of reproductive strategies and sexual conflict in crustaceans displaying external fertilization. Using molecular markers, the current study assesses whether social mating behaviour in common rock shrimp translates into true genetic parentage. In a large mesocosm tank with >200 individuals of both sexes, the analysis of 15 families (22 eggs per female) for three informative microsatellites unambiguously confirmed multiple paternity in 11 instances (73%) involving, in each case, two to four males. Where more than one male was identified siring a particular brood, reproductive skew was apparent towards a single individual. Results suggest that multiple paternity in this species results from subordinate male coercive behaviour, female solicitation of multiple male matings or a combination of both.

Original languageEnglish
Pages (from-to)658-662
Number of pages5
JournalJournal of Crustacean Biology
Volume34
Issue number5
DOIs
Publication statusPublished - 25 Jun 2014

Keywords

  • convenience polyandry
  • cryptic female choice
  • multiple paternity
  • MULTIPLE PATERNITY
  • MATING-BEHAVIOR
  • DECAPODA
  • CRUSTACEA
  • PREDATION
  • ABUNDANCE
  • LOBSTER

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