Jump to ContentJump to Main Navigation
Evolutionary Ecology of Social and Sexual SystemsCrustaceans as Model Organisms$
Users without a subscription are not able to see the full content.

J. Emmett Duffy and Martin Thiel

Print publication date: 2007

Print ISBN-13: 9780195179927

Published to Oxford Scholarship Online: September 2007

DOI: 10.1093/acprof:oso/9780195179927.001.0001

Show Summary Details
Page of

PRINTED FROM OXFORD SCHOLARSHIP ONLINE (www.oxfordscholarship.com). (c) Copyright Oxford University Press, 2019. All Rights Reserved. Under the terms of the licence agreement, an individual user may print out a PDF of a single chapter of a monograph in OSO for personal use (for details see www.oxfordscholarship.com/page/privacy-policy).date: 21 April 2019

Hermaphroditism in Caridean Shrimps

Hermaphroditism in Caridean Shrimps

Mating Systems, Sociobiology, and Evolution, with Special Reference to Lysmata

(p.232) 11 Hermaphroditism in Caridean Shrimps
Evolutionary Ecology of Social and Sexual Systems

Raymond T. Bauer

Oxford University Press

Hermaphroditism is rare in the decapod Crustacea, but protandry (male to female sex change) is not uncommon in caridean shrimps. Protandric shrimps are generally mobile, living in high-density aggregations, with small males and larger females. The mating system is polygynous, with males using a “pure searching” tactic to maximize mating success. Protandry is fairly well explained by the “Size Advantage” Model, in which male mating success is not positively correlated with size but female fecundity is. In the genus Lysmata (“cleaner shrimps”), male-phase individuals change to a female phase as in protandric shrimps, but unlike them retain male gonadal tissues, functioning as non-reciprocal outcrossing simultaneous hermaphrodites. A dichotomy in the sociobiology of Lysmata spp. (“airs” and “Crowd” species) suggests a historical contingency hypothesis (unique past occurrence of particular selective pressures). Phylogenetic analyses are needed to test this hypothesis about the evolution of hermaphroditism in caridean shrimps.

Keywords:   protandry, hermaphroditism, Size Advantage Model, polygyny, phylogenetic analyses

Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .