ArticleGenetica2008
Occurrence of multiple sexual chromosomes (XX/XY1Y2 and Z1Z1Z2Z2/Z1Z2W1W2) in catfishes of the genus Ancistrus (Siluriformes: Loricariidae) from the Amazon basin.
Article in Genetica, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.
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29 citing papers in PubMed, 60 citations in OpenAlex.
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- Whole genome assembly of the armored loricariid catfish Ancistrus triradiatus highlights herbivory signatures.Molecular genetics and genomics : MGG · 2022Article
- Sex determination mechanisms and sex control approaches in aquaculture animals.Science China. Life sciences · 2022Review
- Representing sex chromosomes in genome assemblies.Cell genomics · 2022Article
- Chromosomal Diversification inFrontiers in genetics · 2022Article
- Multiple sex chromosomes in teleost fishes from a cytogenetic perspective: state of the art and future challenges.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2021Review
- Genomic Differences Between the Sexes in a Fish Species Seen Through Satellite DNAs.Frontiers in genetics · 2021Article
- Highly Rearranged Karyotypes and Multiple Sex Chromosome Systems in Armored Catfishes from the GenusGenes · 2020Article
- Comparative Cytogenetics and Neo-Y Formation in Small-Sized Fish Species of the Genus Pyrrhulina (Characiformes, Lebiasinidae).Frontiers in genetics · 2019Article
- Cytogenetic characterization ofComparative cytogenetics · 2019Article
- Tracking the evolutionary pathway of sex chromosomes among fishes: characterizing the unique XX/XYChromosoma · 2018Article
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- Chromosome mapping of a Tc1-like transposon in species of the catfishComparative cytogenetics · 2017Article
- Hidden Diversity in the Populations of the Armored CatfishFrontiers in genetics · 2017Article
- Dual mechanism of chromatin remodeling in the common shrew sex trivalent (XYComparative cytogenetics · 2017Article
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4 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Loricariid catfishes show a predominance of homomorphism in sex chromosomes, but cases of simple and multiple systems were also found. Here we describe two cases of multiple sex chromosome systems in loricariids from Brazilian Amazonia. Males of Ancistrus sp.1 "Balbina" have a modal number of 2n = 39 chromosomes, fundamental number (FN) of 78, and karyotypic formula of 27 m + 10 sm + 2 st; females have 2n = 38 chromosomes, FN = 76, and 26 m + 10 sm + 2 st. Ancistrus sp.2 "Barcelos" has 2n = 52 chromosomes for both sexes, FN = 80 for males and FN = 79 for females. Karyotypic formula is 12 m + 12 sm + 4 st + 24a for males and 11 m + 12 sm + 4st + 25a for females. The two species show different arrangements of constitutive heterochromatin blocks, which are coincident with NORs and absent in sex chromosomes. We suggest a XX/XY(1)Y(2) mechanism for Ancistrus sp.1 "Balbina", and a Z(1)Z(1)Z(2)Z(2)/Z(1)Z(2)W(1)W(2) mechanism for Ancistrus sp.2 "Barcelos". The XX/XY(1)Y(2) mechanism here reported is the second known occurrence of this type of multiple sex chromosomes for Loricariidae and the third for Neotropical fishes; the mechanism Z(1)Z(1)Z(2)Z(2)/Z(1)Z(2)W(1)W(2) represents the first record among fishes. The presence of different sex chromosome systems in Ancistrus indicates a probable independent origin and suggests that the differentiation of sex chromosomes is evolutionarily recent among species in this genus.
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