Fish exhibit the greatest diversity of all vertebrates, making this group extremely attractive for
the study of a number of evolutionary questions. Fish genomes have intrinsic characteristics …

A survey of new species with B chromosomes (Bs), based on a collection of 900
publications, gives an estimate of 406+ B species discovered since they were last surveyed …

Background Diverse plant and animal species have B chromosomes, also known as
accessory, extra or supernumerary chromosomes. Despite being widely distributed among …

Harttia is a genus in the subfamily Loricariinae that accommodates fishes popularly known
as armored catfishes. They show extensive karyotypic diversity regarding interspecific …

Harttia is a genus of the subfamily Loricariinae that posses a broad chromosomal variation.
In addition to interspecific karyotype diversity within this group, a multiple sex chromosome …

Karyotypic analyses were performed in fishes from the genus Hoplias (H. malabaricus and
H. lacerdae groups) from the São Francisco River basin (Brazil), in an impacted region by a …

We examined chromosomes of three species of the genus Hypostomus, in order to
contribute to the understanding of the karyotype evolution of this group. Specimens of H …

Wertheimerinae is a small subfamily of thorny catfish composed of two species found in
eastern Brazilian coastal drainages: Wertheimeria maculata and Kalyptodoras bahiensis …

Auchenipteridae is divided into subfamilies Centromochlinae and Auchenipterinae.
Parauchenipterus is included in the latter and is subject of taxonomic discussions …

In this study, which is the first karyotype analysis of Hypostomus iheringii, nine specimens
collected in Córrego da Lapa (tributary of the Passa-Cinco River) showed a diploid number …