Cytogenetic analysis of four species of Pseudis (Anura, Hylidae), with the description of ZZ/ZW sex chromosomes in P. tocantins

Busin, Carmen Silvia; Andrade, Gilda Vasconcellos de; Bertoldo, Juciene; Grande, Maria Lúcia Del; Uetanabaro, Masao; Recco‐Pimentel, Shirlei Maria

doi:10.1007/s10709-007-9189-7

Cited by 22 publications

(55 citation statements)

References 26 publications

(21 reference statements)

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“…L. caraya differs from other taxa having all metacentric chromosomes and NORs on 6p [Busin et al, 2006], whereas the remaining species with 2n = 24 have nuclear constrictions and NORs on pair 7q [Busin et al, 2000;present work]. Although P. cardosoi bears the NORs on 5q [Busin et al, 2000[Busin et al, , 2008, these chromosomes should be considered homeologous to 7q chromosomes of other Lysapsus and Pseudis karyotypes, as the different location in the karyotype would be a consequence of the fissions of pairs 1 and 4 that originated the 28-chromosome karyotype [Busin et al, 2000]. Additional NORs were detected on 1q and 8q pairs in L. bolivianus and on 7q in L. caraya [Busin et al, 2006].…”

Section: Lysapsus Pseudis and Scarthyla: Homeology Robertsonian Reamentioning

confidence: 83%

“…cardosoi karyotype (2n = 28; FN = 48) is an autapomorphic condition due to Robertsonian rearrangements [Busin et al, 2000[Busin et al, , 2008. L. caraya differs from other taxa having all metacentric chromosomes and NORs on 6p [Busin et al, 2006], whereas the remaining species with 2n = 24 have nuclear constrictions and NORs on pair 7q [Busin et al, 2000;present work].…”

Section: Lysapsus Pseudis and Scarthyla: Homeology Robertsonian Reamentioning

confidence: 90%

“…The C-banding patterns in species of Lysapsus and Pseudis include centromeric bands on most chromosome pairs [Busin et al, 2000[Busin et al, , 2006[Busin et al, , 2008present work]. Additionally, interstitial and distal C-bands are present on chromosome pairs 1-3 and 6-8 [Busin et al, 2000[Busin et al, , 2006[Busin et al, , 2008present work].…”

Section: Lysapsus Pseudis and Scarthyla: Homeology Robertsonian Reamentioning

confidence: 99%

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Chromosome Evolution in Dendropsophini (Amphibia, Anura, Hylinae)

Suárez

Cardozo

Baldo

et al. 2013

Cytogenet Genome Res

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Dendropsophini is the most species-rich tribe within Hylidae with 234 described species. Although cytogenetic information is sparse, chromosome numbers and morphology have been considered as an important character system for systematic inferences in this group. Using a diversity of standard and molecular techniques, we describe the previously unknown karyotypes of the genera Xenohyla, Scarthyla and Sphaenorhynchus and provide new information on Dendropsophus and Lysapsus. Our results reveal significant karyotype diversity among Dendropsophini, with diploid chromosome numbers ranging from 2n = 22 in S. goinorum, 2n = 24 in Lysapsus, Scinax, Xenohyla, and almost all species of Sphaenorhynchus and Pseudis, 2n = 26 in S.carneus, 2n = 28 in P.cardosoi, to 2n = 30 in all known Dendropsophus species. Although nucleolar organizer regions (NORs) and C-banding patterns show a high degree of variability, NOR positions in 2n = 22, 24 and 28 karyotypes and C-banding patterns in Lysapsus and Pseudis are informative cytological markers. Interstitial telomeric sequences reveal a diploid number reduction from 24 to 22 in Scarthyla by a chromosome fusion event. The diploid number of X.truncata corroborates the character state of 2n = 30 as a synapomorphy of Dendropsophus.

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Section: Lysapsus Pseudis and Scarthyla: Homeology Robertsonian Reamentioning

confidence: 83%

Section: Lysapsus Pseudis and Scarthyla: Homeology Robertsonian Reamentioning

confidence: 90%

Section: Lysapsus Pseudis and Scarthyla: Homeology Robertsonian Reamentioning

confidence: 99%

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Chromosome Evolution in Dendropsophini (Amphibia, Anura, Hylinae)

Suárez

Cardozo

Baldo

et al. 2013

Cytogenet Genome Res

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“…It is possible that the association between sex chromosomes and rRNA genes is a general feature of Diptera. rDNA Positions in the tripunctata Radiation of Drosophila In eukaryotes, ribosomal RNA genes (rDNA) are present in multiple copies in the heterochromatin [Andronico et al, 1985;Dubcovsky and Dvorak, 1995;Hirai et al, 1998;Shishido et al, 2000;Busin et al, 2008]. Actually, in Diptera most of the heterochromatin is found on the sex chromosomes and on the dot chromosomes.…”

Section: Discussionmentioning

confidence: 99%

Comparative Analysis of the Chromosomal Positions of rDNA Genes in Species of the <i>tripunctata</i> Radiation of <i>Drosophila</i>

Brianti

Ananina

Recco‐Pimentel

et al. 2009

Cytogenet Genome Res

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The location of rDNA on chromosomes has been found to be highly variable in different groups of insect families of various orders. Yet, in other insect families the rDNA position is relatively constant. This contrast so far has received limited attention. We investigated the rDNA position on mitotic chromosomes in 18 species of Drosophila, 16 of which are from the tripunctata radiation, subgenus Drosophila, through fluorescent in situ hybridization (FISH). All species showed fluorescent signals only on the sex chromosomes. On the X chromosome a single fluorescent mark, but with variable locations, was found. On the Y, we observed variation both in location and in number of fluorescent marks (from 1 to 5). This constancy of chromosome location, in contrast to the great variability found in other groups, is consistent with the work carried out in other species of Drosophila. This suggests that the presence of a nucleolus organizer region (NOR) on each sex chromosome is probably an ancestral condition in the genus. Moreover, this difference in the variation of rDNA position among groups points out an interesting evolution question, which deserves further study.

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“…Numerous studies about chromosome analyses have provided information for studies in taxonomy and phylogeny, and are also used as a fundamental characteristic in species identification (Busin et al 2001;Aguiar et al 2002Aguiar et al , 2004Busin et al 2006Busin et al , 2008Lourenço et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Redescription of the karyotype of five species of the family Bufonidae (Amphibia: Anura) from central area of Argentina

et al. 2011

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In this study karyotypic features of the five species of the family Bufonidae from the central area of Argentina are described. The species are Rhinella achalensis, Rhinella arenarum, Rhinella fernandezae, Rhinella schneideri and Melanophryniscus stelzneri. The metaphases were obtained from intestinal and testis cells, using conventional techniques. Twenty metaphasic figures per individual were analyzed and the total length of each chromosome and the length of the four arms were measured. The obtained measurements were processed using Excel 2000 to obtain the average length of the arms p and q, the arm ratio, the centromeric index, the relative chromosome length and the relative arm length. All species showed karyotype 2n = 22, and karyotype formula of 6 : 5. Pairs one to six were large, with a relative chromosome length between 18.64-7.59%; pairs seven to eleven were small, with a relative chromosome length between 7.18-2.42%. In all species the chromosome morphology was metacentric or submetacentric. Karyotype and ideograms were made for all species, based on morphometric parameters of the chromosome complement. Finally, discriminant analysis was used to separate the five species analyzed, with a highly significant classification rate of 80% and P < 0.0001. These results agree, in general, with those presented by other authors, however, in M. stelzneri detailed karyological studied have not been made so far, thus this work represents a significant contribution to the karyotypic decryption features of this species and the Rhinellla species from central area of Argentina.

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Cytogenetic analysis of four species of Pseudis (Anura, Hylidae), with the description of ZZ/ZW sex chromosomes in P. tocantins

Cited by 22 publications

References 26 publications

Chromosome Evolution in Dendropsophini (Amphibia, Anura, Hylinae)

Chromosome Evolution in Dendropsophini (Amphibia, Anura, Hylinae)

Comparative Analysis of the Chromosomal Positions of rDNA Genes in Species of the <i>tripunctata</i> Radiation of <i>Drosophila</i>

Redescription of the karyotype of five species of the family Bufonidae (Amphibia: Anura) from central area of Argentina

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