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ASYMMETRIC MATING ISOLATION BETWEEN TWO CARIDEAN SHRIMP: LYSMATA WURDEMANNI AND LYSMATA BOGGESSI

文献类型： 外文期刊

作者： Zhu, Jing 1 ; Zhang, Dong 2 ; Lin, Junda 1 ;

作者机构： 1.Florida Inst Technol, Dept Biol Sci, Melbourne, FL 32901 USA

2.Chinese Acad Fisheries Sci, E China Sea Fisheries Res Inst, Shanghai 200090, Peoples R China

3.Florida Inst Technol, Vero Beach Marine Lab, Vero Beach, FL 32963 USA

期刊名称：JOURNAL OF SHELLFISH RESEARCH （ 影响因子：1.396； 五年影响因子：1.47 ）

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收录情况： SCI

摘要： In many animals, sex pheromones are involved in behavioral reproductive isolation, which is thought to be more important than other isolation barriers in causing rapid speciation. Lysmata species living in the western Atlantic waters hive been recently redefined taxonomically, with some of the species having overlapping distribution. It has been found that prezygotic mating isolation is not complete between two Lysmata species-Lysmata wurdemanni and Lysmata boggessi-and there is asymmetry in mate recognition between the two species. Male-role L. wurdemanni can mate with female-role L. boggessi, but not vice versa. This study shows that the asymmetric mating isolation is caused by the difference in sex pheromone detection (both distance and contact sex pheromones). Male L. wurdemanni can detect and respond to distance sex pheromones secreted by female L. boggessi, even at low concentrations, but male L. boggessi did not respond to distance sex pheromones of L. wurdemanni at any concentration, which suggests that their asymmetric mate recognition is not caused by a different response threshold to conspecific and interspecific sex pheromones. Instead, minor differences in the molecular structure of sex pheromones and/or a different ratio in components of sex pheromones may result in asymmetric reproductive isolation.

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