4.3 Article

Novel Sex Chromosomes in 3 Cichlid Fishes from Lake Tanganyika

期刊

JOURNAL OF HEREDITY
卷 109, 期 5, 页码 489-500

出版社

OXFORD UNIV PRESS INC
DOI: 10.1093/jhered/esy003

关键词

color dimorphism; Lake Tanganyika cichlids; sex chromosome evolution

资金

  1. National Science Foundation [DEB-1143920]
  2. U.S. Department of Education Graduate Assistance in Areas of National Need fellowship through the University of Maryland Biology Department [P200A150160]
  3. American Genetics Association through an Ecological, Evolutionary and Conservation Genomics Award

向作者/读者索取更多资源

African cichlids are well known for their adaptive radiations, but it is now apparent that they also harbor an extraordinary diversity of sex chromosome systems. In this study, we sequenced pools of males and females from species in 3 different genera of cichlids from Lake Tanganyika. We then searched for regions that were differentiated following the patterns expected for sex chromosomes. We report 2 novel sex chromosomes systems, an XY system on LG19 in Tropheus sp. black and a ZW system on LG7 in Hemibates stenosoma. We also identify a ZW system on LG5 in Cyprichromis leptosoma that may be convergent with a system previously described in Lake Malawi cichlids. Our data also identify candidate single nucleotide polymorphisms for the blue/yellow tail color polymorphism observed among male C. leptosoma.

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