Karyotypic diversification in Hypostomus Lacépède, 1803 (Siluriformes, Loricariidae): biogeographical and phylogenetic perspectives

Bueno, Vanessa; Vênere, Paulo César; Zawadzki, Cláudio Henrique; Margarido, Vladimir Pavan

doi:10.1007/s11160-012-9280-8

Cited by 25 publications

(23 citation statements)

References 33 publications

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“…The diploid number (2n = 56) found for the population of A. inermis analyzed in this work is equal to the one found for a population of the Solimões River (Fenocchio & Bertollo, 1992) (Amazon basin); however, in the population of Catalão Lake (Amazon basin), a lower diploid number (2n = 54) was found (Santos & Nakayama, 2011). Despite the conservation of the diploid number between the population of the Solimões River and the population of the present study, there are some small differences related to the karyotypic constitution that may be due to translocations and/or pericentric inversions, a situation commonly observed in other fish species, for example Rhamdia quelen (Heptapteridae) (Garcia et al, 2010;Martinez et al, 2011), Parauchenipterus galeatus (Auchenipteridae) , Hoplias malabaricus (Erythrinidae) , Pimelodus maculatus (Pimelodidae) (Mazzuchelli et al, 2007;Treco et al, 2008), Hypostomus ancistroides (Loricariidae) (Bueno et al, 2012(Bueno et al, , 2013, among others.…”

Section: Discussionmentioning

confidence: 64%

The role of chromosomal fusion in the karyotypic evolution of the genus Ageneiosus (Siluriformes: Auchenipteridae)

et al. 2013

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Ageneiosus is the most widely distributed genus of the family Auchenipteridae among South American river basins. Although chromosome studies in the family are scarce, this genus has the largest number of analyzed species, with 2n = 54 to 56 chromosomes, differing from the rest of the family (2n = 58). This study aimed to analyze Ageneiosus inermis from the Araguaia River basin. The diploid number found was of 56 chromosomes. Heterochromatin was allocated in terminal region of most chromosomes, plus a pericentromeric heterochromatic block in pair 1, a pair distinguished by size in relation to other chromosomes pairs. AgNORs were detected in only one submetacentric chromosome pair, which was confirmed by FISH. 5S rDNA was present in only one metacentric chromosome pair. Hybridization with [TTAGGG] n sequence marked the telomeres of all chromosomes, in addition to an ITS in the proximal region of the short arm of pair 1. The repetitive [GATA] n sequence was dispersed, with preferential location in terminal region of the chromosomes. Ageneiosus has a genomic organization somewhat different when compared to other Auchenipteridae species. Evidences indicate that a chromosomal fusion originated the first metacentric chromosome pair in A. inermis, rearrangement which may be a basal event for the genus.Ageneiosus é o gênero da família Auchenipteridae mais amplamente distribuído em bacias da América do Sul. Apesar dos estudos cromossômicos nesta família serem escassos, este gênero tem o maior número de espécies analisadas, com número diploide variando de 54 a 56 cromossomos, o que difere do restante da família (2n = 58). Este estudo objetivou analisar Ageneiosus inermis da bacia do rio Araguaia. O número diploide encontrado foi de 56 cromossomos. A heterocromatina se mostrou localizada na região terminal da maioria dos cromossomos, além de um bloco heterocromático pericentromérico no par 1, um par facilmente distinguível no cariótipo pelo seu maior tamanho quando comparado aos outros pares do complemento. AgRONs foram detectadas em somente um par de cromossomos submetacêntricos, que foi confirmado pela FISH. 5S rDNA se mostrou presente em somente um par de cromossomos metacêntricos. A hibridização com a sequência [TTAGGG] n marcou os telômeros de todos os cromossomos, além de um ITS (sequência telomérica intersticial) na região proximal do braço curto do par 1. A sequência repetitiva [GATA] n se mostrou dispersa, com localização preferencial na região terminal dos cromossomos. Ageneiosus apresenta uma organização genômica um pouco diferente quando comparada a outras espécies de Auchenipteridae. As evidências indicam que uma fusão cromossômica originou o primeiro par de cromossomos metacêntricos de A. inermis, rearranjo que parece ser um evento basal para o gênero.

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Section: Discussionmentioning

confidence: 64%

The role of chromosomal fusion in the karyotypic evolution of the genus Ageneiosus (Siluriformes: Auchenipteridae)

et al. 2013

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“…With the expansion of karyotypic data from this genus, its diversity has been further confirmed by different authors (Alves et al, 2006;Cereali et al, 2008;Rubert et al, 2011;Bueno et al, 2012Bueno et al, , 2013. In addition, hypotheses of phylogenetic relationships of the genus Hypostomus, based on taxonomic and molecular analysis (from mitochondrial DNA sequences) allowed some groupings with in this genus (Montoya-Burgos, 2003).…”

Section: Introductionmentioning

confidence: 74%

“…However, recent data show that chromosome diploid numbers in the genus Hypostomus range from 2n = 64 to 2n = 84 (Endo et al, 2012;Bueno et al, 2013). The value 2n = 54, which was reported for H. plecostomus, has been questioned regarding the correct identification of the species (Bueno et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

“…Thus karyotypes 2n = 64, 65, and 66 have been recorded for three unidentified species (Hypostomus sp, "Group H. plecostomus") from the Xingu River (PA) (Milhomem et al, 2010) and 2n = 64 for H. faveolous from the Araguaia River (Bueno et al, 2013), and 2n = 72 for H. goyazensis (Alves et al, 2005). Diploid values 2n = 68 detected in H .…”

Section: Discussionmentioning

confidence: 99%

“…In addition, hypotheses of phylogenetic relationships of the genus Hypostomus, based on taxonomic and molecular analysis (from mitochondrial DNA sequences) allowed some groupings with in this genus (Montoya-Burgos, 2003). However, the phylogeny of this genus is still far from resolved, but the cytogenetic data reported to date for 47 species have prompted discussions on phylogeny and biogeography of Hypostomus (Bueno et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Karyotype structure of Hypostomus cf. plecostomus (Linnaeus, 1758) from Tapajós River basin, Southern Amazon: occurrence of sex chromosomes (ZZ/ZW) and their evolutionary implications

Oliveira¹,

Ribeiro²,

Dutra³

et al. 2015

Genet. Mol. Res.

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ABSTRACT.Hypostomus is a group of fish with numerical and structural karyotypic variability. Among them, only six species, three of which belong to the Amazon basin, show a sex chromosome. In this study, we present the karyotype structure of Hypostomus cf. plecostomus from the Teles Pires river basin in the municipality of Alta Floresta, MT. The species has 2n = 68 and the karyotype formula 14m+ 24sm+ 14st+ 16a [fundamental number (FN) = 120] in males and 15m+ L.C. Oliveira et al. 6626©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 14 (2): 6625-6634 (2015) 24sm+14st+15a (FN = 121) in females and sex chromosomes ZZ/ZW. Argyrophilic nucleolar organizer regions (AgNORs) were identified in two pairs of chromosomes at different positions: short arm of the pair 21and long arm of the pair 27, matching the signals displayed by 18S FISH and indicating multiple NORs. Analysis of band C detected few blocks of constitutive heterochromatin in the pericentromeric regions of most chromosomes and the telomeric regions of some pairs, including the nucleolar pair 21. However, large blocks on the long arm of the nucleolar pair 27 still stood out. GC-rich heterochromatin (CMA 3 ) was visualized only coincidently with nucleolar sites. Mapping of 5S rDNA sites with FISH revealed markings in eight chromosomes, demonstrating synteny between the 18S and 5S sites. The data obtained for H. cf. plecostomus are important for taxonomic studies of this Amazon complex "H. plecostomus group". The occurrence of sex chromosomes in Amazon species of Hypostomus suggests an evolutionary event that is independent of other species in the group.

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Molecular inferences about the genus Hypostomus Lacépède, 1803 (Siluriformes: Loricariidae): a review

Mezzomo¹,

Mielniczki-Pereira²,

Sausen³

et al. 2020

Mol Biol Rep

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Karyotypic diversification in Hypostomus Lacépède, 1803 (Siluriformes, Loricariidae): biogeographical and phylogenetic perspectives

Cited by 25 publications

References 33 publications

The role of chromosomal fusion in the karyotypic evolution of the genus Ageneiosus (Siluriformes: Auchenipteridae)

The role of chromosomal fusion in the karyotypic evolution of the genus Ageneiosus (Siluriformes: Auchenipteridae)

Karyotype structure of Hypostomus cf. plecostomus (Linnaeus, 1758) from Tapajós River basin, Southern Amazon: occurrence of sex chromosomes (ZZ/ZW) and their evolutionary implications

Molecular inferences about the genus Hypostomus Lacépède, 1803 (Siluriformes: Loricariidae): a review

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