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Corrigenda: Cytogenetic markers as a tool for characterization of hybrids of Astyanax Baird & Girard, 1854 and Hyphessobrycon Eigenmann, 1907. Comparative Cytogenetics 14(2): 231–242. https://doi.org/10.3897/CompCytogen.v14i2.49513
Comparative Cytogenetics ( IF 1.0 ) Pub Date : 2020-12-29 , DOI: 10.3897/compcytogen.v14i4.56080
Caio Augusto Gomes Goes , Sandro Natal Daniel , Lucas Henrique Piva , George Shigueki Yasui , Roberto Ferreira Artoni , Diogo Teruo Hashimoto , Fausto Foresti , Fábio Porto-Foresti

Astyanax Baird et Girard, 1854, is one of the largest genera in the family Characidae and comprises 177 valid species. This genus has been the focus of cytogenetic studies primarily owing to the presence of B chromosomes and high karyotypic diversity among different populations. The intense genetic variability in Astyanax is one of the factors responsible for the occurrence of species complexes, which are groups (1) with certain difficulties in establishing common genetic pools or (2) belonging to different cryptic species. To evaluate cytogenetic marker inheritance and the possibility of the identification of these hybrids, this study aimed to describe cytogenetic hybrids from three strains of species of the genera Astyanax and Hyphessobrycon Eigenmann, 1908. A. lacustris Lütken, 1875, A. schubarti Britski, 1964, A. fasciatus Cuvier, 1819, and H. anisitsi Eigenmann, 1907 were used to generate three hybrid lineages. The diploid number, heterochromatin sites, and ribosomal genes (18S and 5S rDNA) of the parental strains and the hybrids were analyzed. The results indicated that the three hybrid lineages had cytogenetic markers of both parents, presenting Mendelian inheritance. However, differences in distribution of heterochromatic blocks were observed between the hybrids and the parent strains. Our results allowed the identification of the hybrid strains based on the cytogenetic markers applied, reinforcing the efficiency of cytogenetic markers as tools for identification and indicating that such events may increase the karyotypic diversity in the genera Astyanax and Hyphessobrycon.

中文翻译:

更正:细胞遗传学标记物作为表征Astyanax Baird&Girard,1854和Hyphessobrycon Eigenmann,1907杂交种的工具。比较细胞遗传学14(2):231–242。https://doi.org/10.3897/CompCytogen.v14i2.49513

Astyanax Baird et Girard,1854年,是Characidae家族中最大的属之一,包含177个有效种。该属一直是细胞遗传学研究的重点,这主要归因于B染色体的存在和不同人群之间的高核型多样性。Astyanax中强烈的遗传变异性是造成物种复合体发生的因素之一,这些物种是(1)在建立通用遗传库方面存在一定困难的群体,或(2)属于不同隐性物种的群体。为了评估细胞遗传标记的遗传以及鉴定这些杂种的可能性,本研究旨在描述来自3种Astyanax和Hyphessobrycon Eigenmann属的菌株的细胞遗传杂种。A. lacustrisLütken,1875,A。schubarti Britski,1964 ,A。fasciatus Cuvier,1819年和H. anisitsi Eigenmann,1907年用于生成三个杂交谱系。分析了亲本菌株和杂种的二倍体数目,异染色质位点和核糖体基因(18S和5S rDNA)。结果表明,这三个杂种谱系具有父母双方的细胞遗传学标记,表现出孟德尔遗传。然而,在杂种和亲本菌株之间观察到异色块分布的差异。我们的结果允许基于所应用的细胞遗传标记物鉴定杂种菌株,从而增强了细胞遗传标记物作为鉴定工具的效率,并表明此类事件可能会增加Astyanax和Hyphessobrycon属的核型多样性。分析了亲本菌株和杂种的异染色质位点和核糖体基因(18S和5S rDNA)。结果表明,这三个杂种谱系具有父母双方的细胞遗传学标记,表现出孟德尔遗传。然而,在杂种和亲本菌株之间观察到异色块分布的差异。我们的结果允许基于所应用的细胞遗传标记物鉴定杂种菌株,从而增强了细胞遗传标记物作为鉴定工具的效率,并表明此类事件可能会增加Astyanax和Hyphessobrycon属的核型多样性。分析了亲本菌株和杂种的异染色质位点和核糖体基因(18S和5S rDNA)。结果表明,这三个杂种谱系具有父母双方的细胞遗传学标记,表现出孟德尔遗传。然而,在杂种和亲本菌株之间观察到异色块分布的差异。我们的结果允许基于所应用的细胞遗传标记物鉴定杂种菌株,从而增强了细胞遗传标记物作为鉴定工具的效率,并表明此类事件可能会增加Astyanax和Hyphessobrycon属的核型多样性。呈现孟德尔的遗产。然而,在杂种和亲本菌株之间观察到异色块分布的差异。我们的结果允许基于所应用的细胞遗传标记物鉴定杂种菌株,从而增强了细胞遗传标记物作为鉴定工具的效率,并表明此类事件可能会增加Astyanax和Hyphessobrycon属的核型多样性。呈现孟德尔的遗产。然而,在杂种和亲本菌株之间观察到异色块分布的差异。我们的结果允许基于所应用的细胞遗传标记物鉴定杂种菌株,从而增强了细胞遗传标记物作为鉴定工具的效率,并表明此类事件可能会增加Astyanax和Hyphessobrycon属的核型多样性。
更新日期:2020-12-29
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