Genetics of sex determination in tilapiine species

Cnaani, Avner; Lee, Bo-Young; Zilberman, Noam; Ozouf-Costaz, Catherine; Hulata, Gideon; Ron, Micha; D’Hont, Angelique; Baroiller, Jean-Francois; D’Cotta, Helena; Penman, David; Tomasino, Elizabeth; Coutanceau, Jean-Pierre; Pepey, Elodie; Shirak, Andrey; Kocher, Thomas D; Virginia Polytechnic Institute And State University; University of Maryland; Agricultural Research Organization; Museum National d’Histoire Naturelle; Agricultural Research Organization; Agricultural Research Organization; CIRAD; CIRAD; CIRAD; Institute of Aquaculture; Cornell University; Museum National d’Histoire Naturelle; CIRAD; Agricultural Research Organization; University of Maryland; 0000-0001-8608-6631

Genetics of sex determination in tilapiine species

2007

We identified DNA markers linked to sex determining genes in six closely related species of tilapiine fishes. The mode of sex determination differed among species. In Oreochromis karongae and Tilapia mariae the sex-determining locus is on linkage group (LG) 3 and the female is heterogametic (WZ-ZZ system). In O. niloticus and T. zillii the sex-determining locus is on LG1 and the male is heterogametic (XX-XY system). A more complex pattern was observed in O. aureus and O. mossambicus, in which markers on both LG1 and LG3 were associated with sex. We found evidence for sex-linked lethal effects on LG1, as well as interactions between loci in the two linkage groups. Comparison of genetic and physical maps demonstrated a broad region of recombination suppression harboring the sex-determining locus on LG3. Sex-specific recombination suppression was found in the female heterogametic sex. Sequence analysis showed the accumulation of repetitive elements in this region. Phylogenetic analysis suggests that at least two transitions in the mode of sex determination have occurred in this clade. This variation in sex determination mechanisms among closely related species makes tilapias an excellent model system for studying the evolution of sex chromosomes in vertebrates.

اظهر المزيد [+]

الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)

cichlidae oreochromis sex determination tilapia

المعلومات البيبليوغرافية

الناشر

Karger

مواضيع أخرى

Recombination suppression; Tilapia genetics; Heterogametic sex; Sex chromosomes genetics; Sex chromosome; Inversion; Genetic

اللغة

إنجليزي

نوع الملف

application/pdf

الترخيص

The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author; you can only request a copy if you wish to use this work for your own research or private study., http://www.rioxx.net/licenses/under-embargo-all-rights-reserved, 2999-12-31, [Cnaani et al 2008 Sex Dev sex det in tilapias.pdf] I do not have the final authors' version of this article. The document submitted is the final journal article, and the embargo should be permanent for copyright reasons. Anyone wanting a copy can request it from me. The publisher does not allow this work to be made publicly available in this Repository therefore there is an embargo on the full text of the work.

الرقم الدولي الموحد للكتاب (ردمك)

0002551756000, 0-423491173

الرقم التسلسلي المعياري الدولي (ردمد)

18418034

النوع

Journal Article; Journal Part

في أجريس منذ: 2024-11-28

تاريخ التعديل: 2026-02-03

نوع الملف: Dublin Core

مزود البيانات

تم تزويد هذا السجل من قبل University of Stirling

اكتشف مجموعة مزود البيانات هذا في أجريس

الروابط

DOI http://hdl.handle.net/1893/1148 http://dspace.stir.ac.uk/bitstream/1893/1148/1/Cnaani%20et%20al%202008%20Sex%20Dev%20sex%20det%20in%20tilapias.pdf

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أجريس - النظام الدولي للعلوم الزراعية والتكنولوجيا

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Genetics of sex determination in tilapiine species

2007

الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)

المعلومات البيبليوغرافية