2017
DOI: 10.1007/s00412-017-0648-3
|View full text |Cite
|
Sign up to set email alerts
|

Abstract: The Neotropical fish, Hoplias malabaricus, is one of the most cytogenetically studied fish taxon with seven distinct karyomorphs (A-G) comprising varying degrees of sex chromosome differentiation, ranging from homomorphic to highly differentiated simple and multiple sex chromosomes. Therefore, this fish offers a unique opportunity to track evolutionary mechanisms standing behind the sex chromosome evolution and differentiation. Here, we focused on a high-resolution cytogenetic characterization of the unique XX… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1

Citation Types

6
44
0

Year Published

2017
2017
2022
2022

Publication Types

Select...
8

Relationship

4
4

Authors

Journals

citations
Cited by 35 publications
(50 citation statements)
references
References 80 publications
6
44
0
Order By: Relevance
“…In our study, both species exhibited the same general hybridization pattern for all applied probes, with the motif (A) 30 showing moderate abundance and dispersed hybridization pattern throughout the genomes. Otherwise, the dinucleotides (CA) 15 and (GA) 15 accumulated exclusively in telomeric and subtelomeric chromosomal regions, corroborating findings from other fish groups studied to date [101107]. While the bearing of the observed patterns to the dynamics of polyploidy remains unclear, some authors [104, 107] suggested that the preferential targeting of (CA) 15 and (GA) 15 and other microsatellite motifs to telomeric and subtelomeric regions might be functionally linked with the structural formation of telomeres.…”
Section: Discussionsupporting
confidence: 88%
See 1 more Smart Citation
“…In our study, both species exhibited the same general hybridization pattern for all applied probes, with the motif (A) 30 showing moderate abundance and dispersed hybridization pattern throughout the genomes. Otherwise, the dinucleotides (CA) 15 and (GA) 15 accumulated exclusively in telomeric and subtelomeric chromosomal regions, corroborating findings from other fish groups studied to date [101107]. While the bearing of the observed patterns to the dynamics of polyploidy remains unclear, some authors [104, 107] suggested that the preferential targeting of (CA) 15 and (GA) 15 and other microsatellite motifs to telomeric and subtelomeric regions might be functionally linked with the structural formation of telomeres.…”
Section: Discussionsupporting
confidence: 88%
“…They are highly polymorphic regarding copy number variations [98]. In the fish genomes, microsatellites are usually abundant in the centromeric and telomeric regions, and they can also localize preferentially to sex chromosomes [56, 100, 101]. In our study, both species exhibited the same general hybridization pattern for all applied probes, with the motif (A) 30 showing moderate abundance and dispersed hybridization pattern throughout the genomes.…”
Section: Discussionsupporting
confidence: 56%
“…From the cytogenetic standpoint, seven distinct karyotype forms or karyomorphs (A–G) in H. malabaricus and four (A–D) in E. erythrinus have already been identified, respectively, based on major differences in diploid chromosome numbers (2n), chromosome morphology, and sex chromosomes [ 44 ]. Studies employing WCP, CGH, and repetitive DNA distribution patterns have highlighted the differentiation plasticity of the erythrinid sex chromosome systems [ 25 , 45 , 46 , 47 ]. More specifically, it was demonstrated that sex chromosomes could emerge via independent pathways, following distinct patterns of differentiation even within the same type of system and among closely related karyomorphs ( Figure 1 ).…”
Section: The Erythrinidae Family: a Broad Scenario On Fish Sex Chrmentioning
confidence: 99%
“…Chromosomal mapping of rDNA clusters has repeatedly helped to unveil diverse evolutionary issues (e.g., [82,83]). Particularly in fishes, it provided valuable clues about the incidence of cryptic, morphologically indistinguishable sibling species [5,6,8,10,84], polyploidization and interspecific hybridization events [85,86], a geographical gradient of genomic and morphological change [87], patterns of sex chromosome differentiation [80,[88][89][90], and the correlation of genome dynamics in response to environmental cues [91,92]. Among the Nannostomus species investigated here, chromosomal mapping revealed somewhat uniform patterns of distribution for both rDNA classes, with one to few sites of accumulation, as found in most fishes [93,94], as well as in some other lebiasinids [21,22] investigated to date.…”
Section: Discussionmentioning
confidence: 99%