A new species of Crenicichla from the upper Rio das Antas basin, dos Patos lagoon system, southern Brazil (Teleostei: Cichlidae)

Mattos, José L.; Schindler, Ingo; Ottoni, Felipe Polivanov; Cheffe, Morevy

doi:10.3897/vz.64.e31461

Cited by 8 publications

(1 citation statement)

References 19 publications

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“…Colouration in life has revealed several characters useful in the taxonomy of the genus and to diagnose Australoheros species (e.g. OttOni & cheffe, 2009;OttOni, 2010;Rícan et al, 2011;and OttOni, 2012). Due to the importance of life characters in taxonomy of the genus, the life colouration of three species of the Australoheros autrani species group sensu OttOni (2010OttOni ( & 2012, from the rio Paraíba do Sul basin, is described herein, i.e.…”

Section: Introductionmentioning

confidence: 99%

Life colouration of three Australoheros species from the rio Paraíba do Sul basin, southeastern Brazil (Teleostei: Labroidei: Cichlidae)

Ottoni¹

2013

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The colouration in life of three Australoheros species from the rio Paraíba do Sul basin is described herein: Australoheros muriae, Australoheros paraibae and Australoheros robustus. These three species share a character state characterized by the presence of two red zones on caudal-fin’s posterior margin corners, differentiating them from its congeners from the coastal river basins of southeastern Brazil. Australoheros muriae, as well as, its congeners from the coastal river basins of southeastern Brazil (except A. macacuensis), do not expose metallic blotches on anal fins, differing from A. paraibae and A. robustus which always show metallic blotches on anal fin. Australoheros muriae is also distinguished from these other two species by having red iridescence restricted to the upper region of flank, near dorsal-fin base. Australoheros paraibae differs from A. robustus by having ground of body yellow or yellowish brown, absence of any red iridescence on flank, dorsal-fin ground colouration yellow to yellowish brown and anal fin with ground colouration reddish brown on anterior portion, and yellowish brown on posterior portion.

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Section: Introductionmentioning

confidence: 99%

Life colouration of three Australoheros species from the rio Paraíba do Sul basin, southeastern Brazil (Teleostei: Labroidei: Cichlidae)

Ottoni¹

2013

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Fish Diversity and Conservation in a Neotropical Grassland Region

Becker,

Ferrer,

Loureiro

et al. 2023

South Brazilian Grasslands

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Karyoevolution ofCrenicichlaheckel 1840 (Cichlidae, Perciformes): a process mediated by inversions

et al. 2019

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Crenicichla (Cichliformes, Cichlidae) present a highly conserved diploid number 2n=48 with fundamental numbers varying between 52 and 62. We analyzed four species in order to investigate the role of repetitive DNA in chromosome evolution in the genus. Crenicichla johanna , Crenicichla cf. saxatilis and Crenicichla cf. regani have 2n=48 (8 m/sm and 40st/a) and FN=56, while Crenicichla sp. ‘Xingu I’ has 2n=48 (48 st/a) and FN=48. Different patterns of constitutive heterochromatin distribution were observed including pericentric, interstitial and whole arm C bands. A single chromosome bears 18S rDNA clusters in most species, except C. johanna , where population variation exists in terms of the quantity and distribution of clusters and their association with interstitial telomeric sequences. All species showed hybridization of 5S rDNA sequences in an interstitial region on an acrocentric chromosome pair. The karyotypic differences and maintenance of the diploid number supports chromosome evolution mediated by inversions in Crenicichla . The telomeric and 18S rDNA sequence association in various chromosomes of C. johanna are proposed to represent hotspots for breakage, favoring intra-chromosomal rearrangements. The results suggest that repetitive sequences can contribute to microstructural cytogenetic diversity in Crenicichla .

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A new species of Crenicichla from the upper Rio das Antas basin, dos Patos lagoon system, southern Brazil (Teleostei: Cichlidae)

Cited by 8 publications

References 19 publications

Life colouration of three Australoheros species from the rio Paraíba do Sul basin, southeastern Brazil (Teleostei: Labroidei: Cichlidae)

Life colouration of three Australoheros species from the rio Paraíba do Sul basin, southeastern Brazil (Teleostei: Labroidei: Cichlidae)

Fish Diversity and Conservation in a Neotropical Grassland Region

Karyoevolution ofCrenicichlaheckel 1840 (Cichlidae, Perciformes): a process mediated by inversions

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A new species of Crenicichla from the upper Rio das Antas basin, dos Patos lagoon system, southern Brazil (Teleostei: Cichlidae)

Cited by 8 publications

References 19 publications

Life colouration of three Australoheros species from the rio Para&iacute;ba do Sul basin, southeastern Brazil (Teleostei: Labroidei: Cichlidae)

Life colouration of three Australoheros species from the rio Para&iacute;ba do Sul basin, southeastern Brazil (Teleostei: Labroidei: Cichlidae)

Fish Diversity and Conservation in a Neotropical Grassland Region

Karyoevolution ofCrenicichlaheckel 1840 (Cichlidae, Perciformes): a process mediated by inversions

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Life colouration of three Australoheros species from the rio Paraíba do Sul basin, southeastern Brazil (Teleostei: Labroidei: Cichlidae)

Life colouration of three Australoheros species from the rio Paraíba do Sul basin, southeastern Brazil (Teleostei: Labroidei: Cichlidae)