A new multiple sex chromosome system X1X1X2X2/X1Y1X2Y2 in Siluriformes: cytogenetic characterization of Bunocephalus coracoideus (Aspredinidae)

M Ferreira, C Garcia, DA Matoso, IS de Jesus… - Genetica, 2016 - Springer
We analyzed one Bunocephalus coracoideus population from the Negro River basin using
cytogenetic techniques. The results showed a diploid number of 42 chromosomes in both …

Species validation and cryptic diversity in the Geophagus brasiliensis Quoy & Gaimard, 1824 complex (Teleostei, Cichlidae) from Brazilian coastal basins as revealed …

CR Souza, PRA de Mello Affonso… - Hydrobiologia, 2018 - Springer
Many allopatric populations of the pearl cichlid Geophagus brasiliensis show remarkable
morphological, chromosomal, and DNA sequence divergence. As a result, Geophagus …

Effects of past riverine connectivity on the population structure and species distribution of 'Geophagus' brasiliensis (Cichlidae) complex in a Neotropical hotspot

LA Argolo, IPA Campos, H López‐Fernández… - Freshwater …, 2024 - Wiley Online Library
Once fishes and rivers are intrinsically connected, historical events such as river captures
and the reconfiguration of palaeodrainages affect population structure and species …

A Unique Sex Chromosome System in the Knifefish Gymnotus bahianus with Inferences About Chromosomal Evolution of Gymnotidae

JS Almeida, VH Migues, D Diniz… - Journal of …, 2015 - academic.oup.com
Cytogenetic studies in Neotropical electric knifefish of genus Gymnotus have shown a
remarkable interspecific variability, including distinct sex chromosome systems. In this study …

Allopatric divergence in Astyanax aff. fasciatus Cuvier, 1819 (Characidae, Incertae sedis) inferred from DNA mapping and chromosomes

AS Medrado, PRA de Mello Affonso… - Zoologischer Anzeiger-A …, 2015 - Elsevier
The fish genus Astyanax represents a suitable model to test the role of chromosomal
changes in population structure and speciation. Therefore, we performed a detailed …

Integrated analysis reveals a new species of Corydoras Lacépède, 1803 (Siluriformes: Callichthyidae) in the lower Iguassu River, Brazil

RH da Rocha, CA Fernandes, TS Bignotto… - Organisms Diversity & …, 2022 - Springer
Corydoras is the richest genus of Corydoradinae, and many of its species have not been
identified to date. We characterized Corydoras carlae and Corydoras sp. by performing …

Is Nematocharax (Actinopterygii, Characiformes) a monotypic fish genus?

SB Barreto, LA Nunes, AT da Silva, R Jucá-Chagas… - …, 2016 - cdnsciencepub.com
The combination of DNA barcodes and geometric morphometrics is useful to discriminate
taxonomically controversial species, providing more precise estimates of biodiversity …

[HTML][HTML] An uncommon co-localization of rDNA 5S with major rDNA clusters in Callichthyidae (Siluriformes): a report case in Corydoras carlae Nijssen & Isbrücker …

RH da Rocha, L Baumgärtner, LM Paiz… - Comparative …, 2016 - ncbi.nlm.nih.gov
Corydoras Lacepède, 1803 is the most specious genus of Corydoradinae subfamily and
many of its species are still unknown in relation to molecular cytogenetic markers. However …

Cryptic Chromosomal Diversity in the Complex “Geophagusbrasiliensis (Perciformes, Cichlidae)

IA Oliveira, LA Argolo, JA Bitencourt, D Diniz, MR Vicari… - Zebrafish, 2016 - liebertpub.com
Abstract Among American cichlids, Geophagus stands out as a species-rich genus
widespread over neotropical region. Despite their diversity and confusing taxonomy, only …

Karyotypic divergence of two co-occurring species of Andean Climbing catfishes (Siluriformes: Loricarioidei: Astroblepidae)

CC Conde-Saldana, MS Cunha, JG Albornoz-Garzón… - Zebrafish, 2019 - liebertpub.com
The monotypic Astroblepidae fish family includes 81 species distributed along Central and
Northern Andes in South America and Panamá in Central America; most aspects regarding …