Adriana M C Silva, Patrícia Cristina Vizzotto, Quizzi Maria Cordova Becker, José Reinaldo
{"title":"Astyanax属3个同域种的核型描述(特种科，特种科)","authors":"Adriana M C Silva, Patrícia Cristina Vizzotto, Quizzi Maria Cordova Becker, José Reinaldo","doi":"10.11352/SCR.15.27","DOIUrl":null,"url":null,"abstract":"The genus Astyanax, one of the largest genera in the family Characidae, comprises a large number of similarly shaped fish species. In this study, the karyotypes of three sympatric species of Astyanax were analyzed. Astyanax asuncionensis showed a karyotype of 2n=50 chromosomes (14M+26SM+10ST/A). Astyanax lineatus also had 2n=50 chromosomes, but its karyotype was different (8M+24SM+18ST/A). Astyanax marionae showed a karyotype of 2n=48 chromosomes (8M+24SM+16ST/ A). Ag-NORs appeared in two pairs of chromosomes in Astyanax marionae and in only one pair in the other two species. The variation in the karyotype formula and number of nucleolar organizer regions highlights the importance of these markers in distinguishing among similarly shaped species.","PeriodicalId":10221,"journal":{"name":"Chromosome science","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Karyotype description of three sympatric species of Astyanax (Characiformes, Characidae)\",\"authors\":\"Adriana M C Silva, Patrícia Cristina Vizzotto, Quizzi Maria Cordova Becker, José Reinaldo\",\"doi\":\"10.11352/SCR.15.27\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The genus Astyanax, one of the largest genera in the family Characidae, comprises a large number of similarly shaped fish species. In this study, the karyotypes of three sympatric species of Astyanax were analyzed. Astyanax asuncionensis showed a karyotype of 2n=50 chromosomes (14M+26SM+10ST/A). Astyanax lineatus also had 2n=50 chromosomes, but its karyotype was different (8M+24SM+18ST/A). Astyanax marionae showed a karyotype of 2n=48 chromosomes (8M+24SM+16ST/ A). Ag-NORs appeared in two pairs of chromosomes in Astyanax marionae and in only one pair in the other two species. The variation in the karyotype formula and number of nucleolar organizer regions highlights the importance of these markers in distinguishing among similarly shaped species.\",\"PeriodicalId\":10221,\"journal\":{\"name\":\"Chromosome science\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2012-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chromosome science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.11352/SCR.15.27\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chromosome science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.11352/SCR.15.27","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Karyotype description of three sympatric species of Astyanax (Characiformes, Characidae)
The genus Astyanax, one of the largest genera in the family Characidae, comprises a large number of similarly shaped fish species. In this study, the karyotypes of three sympatric species of Astyanax were analyzed. Astyanax asuncionensis showed a karyotype of 2n=50 chromosomes (14M+26SM+10ST/A). Astyanax lineatus also had 2n=50 chromosomes, but its karyotype was different (8M+24SM+18ST/A). Astyanax marionae showed a karyotype of 2n=48 chromosomes (8M+24SM+16ST/ A). Ag-NORs appeared in two pairs of chromosomes in Astyanax marionae and in only one pair in the other two species. The variation in the karyotype formula and number of nucleolar organizer regions highlights the importance of these markers in distinguishing among similarly shaped species.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
