Evolutionary radiations are responsible for much of the variation in biodiversity across taxa.
Cichlid fishes are well known for spectacular evolutionary radiations, as they have …

Bunocephalus is the most species-rich Aspredinidae genus, corresponding to a
monophyletic clade with 13 valid species. However, many species have their classification …

Three species of cichlids belonging to the genus Symphysodon have demonstrated
interspecific and intraspecific variation in nucleolus organizer regions (NOR) detected with …

The evolution of heteromorphic sex chromosomes has occurred independently many times
in different lineages. The differentiation of sex chromosomes leads to dramatic changes in …

Background Cichlid fishes have been the subject of increasing scientific interest because of
their rapid adaptive radiation which has led to an extensive ecological diversity and their …

Abstract Rotifers of Class Bdelloidea are common freshwater invertebrates of ancient origin
whose apparent asexuality has posed a challenge to the view that sexual reproduction is …

Heteromorphic sex chromosomes are common in eukaryotes and largely ubiquitous in birds
and mammals. The largest number of multiple sex chromosomes in vertebrates known today …

As part of a genetic screening program for wild Discus fishes, we analyzed karyotypes and
cytogenetic characteristics of Symphysodon aequifasciatus, S. discus and S. haraldi using C …

Simple Summary The aim of the present study was to evaluate the Trichlorfon effects on the
retrotransposable elements in tambaqui (Colossoma macropomum) genome, which is a …

In this study, we investigated the mitotic and meiotic chromosomes of 11 Buthidae scorpion
species, belonging to three genera (Ananteris, Rhopalurus and Tityus), to obtain detailed …