Harttia comprises an armored catfish genus endemic to the Neotropical region, including 27
valid species with low dispersion rates that are restricted to small distribution areas …

The Erythrinidae family (Teleostei: Characiformes) is a small Neotropical fish group with a
wide distribution throughout South America, where Hoplias malabaricus corresponds to the …

The armored Harttia catfishes present great species diversity and remarkable cytogenetic
variation, including different sex chromosome systems. Here we analyzed three new …

Fishes exhibit the greatest biodiversity among the vertebrates, making them an extremely
attractive group to study a number of evolutionary questions. Over the last years, the …

Changes in chromosomal structure involving chromosomal rearrangements or copy number
variation of specific sequences can play an important role in speciation. Here, we explored …

Although fishes have traditionally been the subject of comparative evolutionary studies, few
reports have concentrated on the application of multipronged modern molecular cytogenetic …

Abstract The Neotropical fish, Hoplias malabaricus, is one of the most cytogenetically
studied fish taxon with seven distinct karyomorphs (A–G) comprising varying degrees of sex …

Although fishes exhibit the greatest biodiversity among the vertebrates, a large percentage
of this fauna is still underexplored on evolutionary cytogenetic questions, particularly the …

The main objectives of this study were to test:(1) whether the W-chromosome differentiation
matches to species' evolutionary divergence (phylogenetic concordance) and (2) whether …

Arowanas (Osteoglossinae) are charismatic freshwater fishes with six species and two
genera (Osteoglossum and Scleropages) distributed in South America, Asia, and Australia …