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The fate of W chromosomes in hybrids between wild silkmoths, Samia cynthia ssp.: no role in sex determination and reproduction
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SYSNO ASEP 0458935 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The fate of W chromosomes in hybrids between wild silkmoths, Samia cynthia ssp.: no role in sex determination and reproduction Author(s) Yoshido, Atsuo (BC-A) RID, ORCID
Marec, František (BC-A) RID, ORCID
Sahara, K. (JP)Number of authors 3 Source Title Heredity - ISSN 0018-067X
Roč. 116, č. 5 (2016), s. 424-433Number of pages 10 s. Language eng - English Country GB - United Kingdom Keywords hybrids ; sex chromosomes ; sex determination Subject RIV EB - Genetics ; Molecular Biology R&D Projects GA14-22765S GA ČR - Czech Science Foundation (CSF) Institutional support BC-A - RVO:60077344 UT WOS 000374130300002 EID SCOPUS 84954338790 DOI 10.1038/hdy.2015.110 Annotation Moths and butterflies (Lepidoptera) have sex chromosome systems with female heterogamety (WZ/ZZ or derived variants). The maternally inherited W chromosome is known to determine female sex in the silkworm, Bombyx mori. However, little is known about the role of W chromosome in other lepidopteran species. We performed crosses between subspecies of wild silkmoths Samia cynthia pryeri (2n=28, WZ/ZZ) and S. c. walkeri (2n=26, neo-Wneo-Z/neo-Zneo-Z) and examined fitness and sex chromosome constitution in their hybrids. FISH revealed not only the expected sex chromosome constitutions in the backcross and F2 hybrids of both sexes but also females without the W (or neo-W) chromosome and males carrying the W (or neo-W) chromosome. Our results clearly suggest that the W (or neo-W) chromosome of S. cynthia ssp. plays no role in sex determination and reproduction, and thus does not contribute to the formation of reproductive barriers between different subspecies.
Workplace Biology Centre (since 2006) Contact Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Year of Publishing 2017
Number of the records: 1