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Reproductive Isolation Between Two Sympatric Simultaneous Hermaphroditic Shrimp, Lysmata Wurdemanni And L. Boggessi, Dong Zhang, Junda Lin, Jörg D. Hardege, Andrew L. Rhyne

Arts & Sciences Faculty Publications

To investigate pre- and post-zygotic isolation between two sympatric and phylogenetically related species of Lysmata shrimp, two assays were conducted in the laboratory: (1) no specific mate choice where mating between the two species was ‘forced’; (2) specific mate choice or preference where a female had a choice between conspecific and heterospecifc males. Behavioural studies reveal that female L. wurdemanni accepted only conspecific male shrimp, whereas L. boggessi females would mate with an interspecific male if there was no conspecific male present. When males of both species were present, L. boggessi females always mated with the conspecific male. Male L. …