Interregional cytogenetic comparisons in Halichoeres and Thalassoma wrasses (Labridae) of coastal and insular regions of the southwestern Atlantic

Amorim, Karlla Danielle Jorge; Cioffi, Marcelo de Bello; Bertollo, L.A.C.; Soares, Rodrigo Xavier; Calado, Leonardo Luiz; Borges, A.T.; Costa, Gideão Wagner Werneck Félix da; Molina, W.F.

doi:10.4238/gmr16029650

Cited by 5 publications

(2 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to the high evolutionary dynamic of multigene families, such as the ribosomal DNA genes (Gornung, 2013), with a vital role in protein synthesis, and of histones (H1, H2B-H2A, H3, and H4), acting in the structural organization of chromatin and regulation of gene expression in eukaryotes (Chioda et al, 2002), they have been largely used in evolutionary and population approaches (e.g., Motta-Neto et al, 2012;Amorim et al, 2017). The preferential participation of concerted evolution in the ribosomal DNA (Gonzalez and Sylvester, 2001) or by birth-and-death evolution in histone genes (Rooney and Ward, 2005) promotes differential arrays that can be followed in the genome of the species and populations (Lima-Filho et al, 2012;Costa et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Evolutionary Tracks of Chromosomal Diversification in Surgeonfishes (Acanthuridae: Acanthurus) Along the World’s Biogeographic Domains

et al. 2021

View full text Add to dashboard Cite

Fishes of the genus Acanthurus (Acanthuridae) are strongly related to reef environments, in a broad biogeographic context worldwide. Although their biological aspects are well known, cytogenetic information related to this genus remains incipient. In this study, Acanthurus species from populations inhabiting coastal regions of the Southwest Atlantic (SWA), South Atlantic oceanic islands (Fernando de Noronha Archipelago and Trindade Island), Greater Caribbean (GC), and Indo-Pacific Ocean (the center of the origin of the group) were analyzed to investigate their evolutionary differentiation. For this purpose, we employed conventional cytogenetic procedures and fluorescence in situ hybridization of 18S rDNA, 5S rDNA, and H3 and H2B-H2A histone sequences. The Atlantic species (A. coeruleus, A. chirurgus, and A. bahianus) did not show variations among them, despite their vast continental and insular distribution. In contrast, A. coeruleus from SWA and GC diverged from each other in the number of 18S rDNA sites, a condition likely associated with the barrier created by the outflows of the Amazonas/Orinoco rivers. The geminate species A. tractus had a cytogenetic profile similar to that of A. bahianus. However, the chromosomal macrostructures and the distribution of rDNA and hisDNA sequences revealed moderate to higher rates of diversification when Acanthurus species from recently colonized areas (Atlantic Ocean) were compared to A. triostegus, a representative species from the Indian Ocean. Our cytogenetic data covered all Acanthurus species from the Western Atlantic, tracked phylogenetic diversification throughout the dispersive process of the genus, and highlighted the probable diversifying role of ocean barriers in this process.

show abstract

Section: Introductionmentioning

confidence: 99%

Evolutionary Tracks of Chromosomal Diversification in Surgeonfishes (Acanthuridae: Acanthurus) Along the World’s Biogeographic Domains

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The investigation of environmental effects on the genetic diversity of marine fish species depends on favorable spatial models, which have been used to identify causes and factors that promote their karyotype differentiation ( Accioly et al 2012 ; Molina et al 2012 ; Amorim et al 2017 ; Motta-Neto et al 2019 ). Additionally, it is also advantageous to add an integrated view of contemporary ecological and environmental patterns associated with the historical biogeography of the groups ( Molina 2007 ; Molina et al 2014 ; Amorim et al 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Comparative cytogenetic patterns in Carangidae fishes in association with their distribution range

Soares¹,

Motta-Neto²,

Costa³

et al. 2021

CCG

View full text Add to dashboard Cite

Carangidae are an important and widespreaded family of pelagic predatory fishes that inhabit reef regions or open ocean areas, some species occupying a vast circumglobal distribution. Cytogenetic comparisons among representatives of its different tribes help to understand the process of karyotype divergence in marine ecosystems due to the variable migratory ability of species. In this sense, conventional cytogenetic investigations (Giemsa staining, Ag-NORs, and C-banding), GC base-specific fluorochrome staining and FISH mapping of ribosomal DNAs were performed. Four species, Elagatis bipinnulata (Quoy et Gaimard, 1825) and Seriola rivoliana (Valenciennes, 1883) (Naucratini), with circumtropical distributions, Gnathanodon speciosus (Forsskål, 1775) (Carangini), widely distributed in the tropical and subtropical waters of the Indian and Pacific oceans, and Trachinotus carolinus (Linnaeus, 1766) (Trachinotini), distributed along the western Atlantic Ocean, were analyzed, thus encompassing representatives of three out its four tribes. All species have diploid chromosome number 2n = 48, with karyotypes composed mainly by acrocentric chromosomes (NF = 50–56). The 18S rDNA/Ag-NORs/GC+ and 5S rDNA loci were located on chromosomes likely homeologs. Karyotypes showed a pattern considered basal for the family or with small variations in their structures, apparently due to pericentric inversions. The migratory capacity of large pelagic swimmers, in large distribution areas, likely restricts the fixation of chromosome changes in Carangidae responsible for a low level of karyotype diversification.

show abstract

Integrative Cytogenetics, A Conservation Approach in Atlantic Fish: Concepts, Estimates, and Uses

Molina,

da Motta-Neto,

da Costa

2023

Conservation Genetics in the Neotropics

View full text Add to dashboard Cite

Interregional cytogenetic comparisons in Halichoeres and Thalassoma wrasses (Labridae) of coastal and insular regions of the southwestern Atlantic

Cited by 5 publications

References 36 publications

Evolutionary Tracks of Chromosomal Diversification in Surgeonfishes (Acanthuridae: Acanthurus) Along the World’s Biogeographic Domains

Evolutionary Tracks of Chromosomal Diversification in Surgeonfishes (Acanthuridae: Acanthurus) Along the World’s Biogeographic Domains

Comparative cytogenetic patterns in Carangidae fishes in association with their distribution range

Integrative Cytogenetics, A Conservation Approach in Atlantic Fish: Concepts, Estimates, and Uses

Contact Info

Product

Resources

About

Interregional cytogenetic comparisons in Halichoeres and Thalassoma wrasses (Labridae) of coastal and insular regions of the southwestern Atlantic

Cited by 5 publications

References 36 publications

Evolutionary Tracks of Chromosomal Diversification in Surgeonfishes (Acanthuridae: Acanthurus) Along the World’s Biogeographic Domains

Evolutionary Tracks of Chromosomal Diversification in Surgeonfishes (Acanthuridae: Acanthurus) Along the World’s Biogeographic Domains

﻿Comparative cytogenetic patterns in Carangidae fishes in association with their distribution range

Integrative Cytogenetics, A Conservation Approach in Atlantic Fish: Concepts, Estimates, and Uses

Contact Info

Product

Resources

About

Comparative cytogenetic patterns in Carangidae fishes in association with their distribution range