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Journal of Heredity Advance Access published online on February 27, 2008
Journal of Heredity, doi:10.1093/jhered/esn008
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© The American Genetic Association. 2008. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org.

Brief Communications

Recombination in Interpopulation Hybrids of the Copepod Tigriopus californicus: Release of Beneficial Variation Despite Hybrid Breakdown

Suzanne Edmands

From the Department of Biological Sciences, University of Southern California, Los Angeles, CA 91030

Address correspondence to S. Edmands at the address above, or e-mail: sedmands{at}usc.edu.

Crosses between divergent populations of the copepod Tigriopus californicus typically result in fitness reductions for both F2 and backcross hybrids. Because females in this species lack chiasmatic meiosis, both recombinant and nonrecombinant backcross hybrids can be created. Recombinant hybrids were found to have significantly faster development time for both males and females in 2 pairs of crosses, indicating the creation of favorable gene combinations by disrupting parental linkage groups.

Corresponding Editor: Martin Tracey

Received May 21, 2007
Accepted January 17, 2007


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