Basic and molecular cytogenetics in freshwater Cichlidae (Osteichthyes, Perciformes). Karyotypic conservationism and divergence

Vicari, Marcelo Ricardo; Artoni, Roberto Ferreira; Moreira‐Filho, Orlando; Bertollo, Luiz Antônio Carlos

doi:10.1080/00087114.2006.10797924

Cited by 31 publications

(47 citation statements)

References 22 publications

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“…In the Cichlidae family, karyotypic analysis have demonstrated the maintenance of the diploid number in most species. As observed to the most of Neotropical cichlids, the diploid number of 48 chromosomes was constant in both G. basiliensis here analyzed, corroborating with the ancestral condition for both Cichlidae and Perciformes (THOMPSON 1979;FELDBERG;BERTOLLO, 1985;MARTINS et al, 1995;VICARI et al, 2006;RONCATI et al, 2007;PERAZZO et al, 2010). However, this diploid number can vary between 32 and 60 chromosomes (FELDBERG et al, 2003) in some cichlids species.…”

Section: Discussionsupporting

confidence: 62%

“…This ditribuition pattern was observed to Feijão and Pântano streams populations. Vicari et al (2006) showed a peculiar pattern of distribution of heterochromatin in G. brasiliensis river Jaguaiaíva presenting some pairs conspicuous heterochromatic blocks and instersticiais. So, in G. brasiliensis populations minors chromosomal divergences could be atribuited to heterochromatin expansion or exchange how observed in both populations analized.…”

Section: Discussionmentioning

confidence: 99%

“…So, in G. brasiliensis populations minors chromosomal divergences could be atribuited to heterochromatin expansion or exchange how observed in both populations analized. Yet, G. brasiliensis has the characteristic of single NOR located on subtelocentric chromosomes in terminal regions of the short arm (BRUM et al, 1998;FELDBERG et al, 2003;VICARI et al, 2006;LARISSA et al, 2008). Vicari et al (2006) analyzed by fluorescence in situ hybridization three different populations of G. brasiliensis on the number and location of sites of 18S rDNA and 5S.…”

Section: Discussionmentioning

confidence: 99%

“…scabripinnis, A. bimaculatus, A. altiparanae (FERREIRA-NETO et al, 2009;KANTEK et al, 2009) and in Gymnotus genus (MARGARIDO et al, 2007;LACERDA;MAISTRO, 2007;MILHOMEN et al, 2007). In turn, the Cichlidae species like Geophagus and others genus showed a minnor chromosomal diversifi cation, usually restrict to micro alterations in the chromosomes (VICARI et al, 2006;PERAZZO et al, 2010). Thus, the detection of diploid and fundamental number and the implementation of procedures generating molecular markers have been important to evolutionary analysis and cytotaxonomy these fi shes.…”

Section: Discussionmentioning

confidence: 99%

“…Comparative cytogenetics studies among fi sh populations from the different river basins, situated in a closelly region of the headwaters barriers has provided to generate hypotheses about karyotype evolution, species dispersal, biogeography, and has wide application in analysis cytotaxonomic (CENTOFANTE et al, 2003;VICARI et al, 2005;FERREIRA-NETO et al, 2009;ARTONI et al, 2008;2009). This type of analysis, when well designed, has shown a greater sensitivity of karyotypic comparison among populations by restricting the study area and factually detecting the possibles differences between populations that have evolved in different river basins, although in a limited geographical area.…”

Section: Introductionmentioning

confidence: 99%

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Comparative Cytogenetic Study Among Three Fish Species: An Analysis From a Water Divide Region

Moreira-Filho¹,

Neto²,

Oliveira³

et al. 2011

Publ. Biologicas

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The aim of the present study was to characterize chromosomal differences between two populations separated in the past for a water divide. Processes of differentiation have been identifi ed in the species studied, being justifi ed by the separation of streams from past for a water divide. Karyotypic data were presented for Astyanax altiparanae, Geophagus brasiliensis and Gymnotus carapo populations of two different river systems of the upper Parana: ribeirão do Pântano (Tietê basin) and ribeirão do Feijão (Mogi Guaçu basin) in the São Carlos region, state of São Paulo. The Astyanax altiparanae, presented a diploid number of 2n=50 chromosomes. The Geophagus brasiliensis diploid numbers was 2n=48 chromosomes and Gymnotus carapo a diploid number of 2n=54 chromosomes. An analysis was made of constitutive heterochromatin by C-banding, detection of nucleolar organizer regions and the technique of Hybridization in situ Fluorescent with probes 18S rDNA and 5S rDNA. These results indicate that the species analysed showed differences of karyotype, showing that each population follows its own evolution, as a result of a restrictive process of gene fl ow.

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Section: Discussionsupporting

confidence: 62%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Comparative Cytogenetic Study Among Three Fish Species: An Analysis From a Water Divide Region

Moreira-Filho¹,

Neto²,

Oliveira³

et al. 2011

Publ. Biologicas

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Karyotype diversity and fish conservation of southern field from South Brazil

Artoni

Vicari

Almeida

et al. 2009

Rev Fish Biol Fisheries

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Six hundred and twenty-seven specimens of neotropical fishes belonging to thirteen species/ populations from southern field (Paraná, State, Brazil) were karyotypicaly analyzed between 2000 and 2006.The study biogeographic region is characterized as a divisor of waters presenting tributaries and headboards of the hydrographic basins of the rivers Tibagi, Iguaçu, Ivaí, and Paranapanema (Upper Paraná Basin) and Ribeira river (East Basin). Two patterns of karyotypic diversification were verified, being one more conserved in the karyotypic macrostructure and the other more diversified. The understanding at of this variability with views to the citotaxonomy and biological conservation was interpreted at the light of (1) the historical biogeography, (2) of the evolutionary time, and (3) of the biology of the species, indicating the study area as highly relevant for the selection of evolutionary potential.

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Chromosomal studies in Crenicichla lepidota and Australoheros facetus (Cichlidae, Perciformes) from extreme Southern Brazil

Perazzo

Noleto

Vicari

et al. 2010

Rev Fish Biol Fisheries

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Fishes of the family Cichlidae generally show low karyotype variability. Nevertheless, karyotype variants have been identified within some genera, providing information about their evolutionary history. In the present study, karyotype characteristics of Crenicichla lepidota and Australoheros facetus, two sympatric species found in the São Gonçalo-Mangueira basin, were studied. Besides conventional procedures, double fluorochromes staining chromomycin A 3 /DAPI and fluorescent in situ hybridization (FISH) with rDNA probes were also used. Both species presented 2n = 48 chromosomes, but karyotypes were differentiated by fundamental number, which was equal to 70 in A. facetus and 56 in C. lepidota. Similar heterochromatin distribution patterns were also observed on the pericentromeric region of most chromosomes, although C. lepidota presented an additional heterochromatic block in the first pair. The Ag-NORs, 18S rDNA probe and CMA 3 /DAPI were coincident in location on the first and second pairs of C. lepidota and A. facetus, respectively. The minor rDNA loci (5S rDNA) were found in four sites located on two distinct chromosomal pairs in C. lepidota. Although the data obtained here to C. lepidota and to A. facetus show chromosomal characteristics considered ancestral to the family, new data are presented to both species. Additionally, this study corroborates the hypothesis in which evolutionary processes like non-Robertsonian rearrangements are involved in the diversification of the major groups of Neotropical Cichlidae. Thus, the karyotype diversification observed in A. facetus have the high fundamental number pathway while C. lepidota has others evolutionary chromosomal mechanisms.

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Basic and molecular cytogenetics in freshwater Cichlidae (Osteichthyes, Perciformes). Karyotypic conservationism and divergence

Cited by 31 publications

References 22 publications

Comparative Cytogenetic Study Among Three Fish Species: An Analysis From a Water Divide Region

Comparative Cytogenetic Study Among Three Fish Species: An Analysis From a Water Divide Region

Karyotype diversity and fish conservation of southern field from South Brazil

Chromosomal studies in Crenicichla lepidota and Australoheros facetus (Cichlidae, Perciformes) from extreme Southern Brazil

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