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2004 The Society for the Study of Evolution. All rights reserved. Evolution, 58(10), 2004, pp. 23322342
 

Summary: 2332
2004 The Society for the Study of Evolution. All rights reserved.
Evolution, 58(10), 2004, pp. 23322342
RECONSTRUCTION OF PARENTAL MICROSATELLITE GENOTYPES
REVEALS FEMALE POLYANDRY AND PHILOPATRY IN THE
LEMON SHARK, NEGAPRION BREVIROSTRIS
KEVIN A. FELDHEIM,1,2 SAMUEL H. GRUBER,3,4 AND MARY V. ASHLEY1,5
1Department of Biological Sciences, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60608
3Division of Marine Biology and Fisheries, Rosenstiel School of Marine and Atmospheric Science,
4600 Rickenbacker Causeway, Miami, Florida 33149
4E-mail: sgruber@rsmas.miami.edu
5E-mail: ashley@uic.edu
Abstract. Because sharks possess an unusual suite of reproductive characteristics, including internal fertilization,
sperm storage, relatively low fecundity, and reproductive modes that range from oviparity to viviparity, they can
provide important insight into the evolution of mating systems and sexual selection. Yet, to date, few studies have
characterized behavioral and genetic mating systems in natural populations of sharks or other elasmobranchs. In this
study, highly polymorphic microsatellite loci were used to examine breeding biology of a large coastal shark, the
lemon shark, Negaprion brevirostris, at a tropical lagoon nursery. Over six years, 910 lemon sharks were sampled
and genotyped. Young were assigned into sibling groups that were then used to reconstruct genotypes of unsampled
adults. We assigned 707 of 735 young sharks to one of 45 female genotypes (96.2%), and 485 (66.0%) were assigned

  

Source: Ashley, Mary V. - Department of Biological Sciences, University of Illinois at Chicago

 

Collections: Biology and Medicine; Environmental Sciences and Ecology