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

Teleost fishes exhibit a breath-taking diversity of sex determination and differentiation
mechanisms. They encompass at least nine sex chromosome systems with often low degree …

Karyotype divergence may strongly affect the degree of hybridization between species.
Western Palearctic slow worms (Anguis) are legless lizards forming different types of …

We present the first cytogenetic data for Lebiasina bimaculata and L. melanoguttata with the
aim of (1) investigating evolutionary events within Lebiasina and their relationships with …

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

Lebiasinidae is a Neotropical freshwater family widely distributed throughout South and
Central America. Due to their often very small body size, Lebiasinidae species are …

Scleropages formosus (Osteoglossiformes, Teleostei) represents one of the most valued
ornamental fishes, yet it is critically endangered due to overexploitation and habitat …

Despite several difficulties in chromosomal analyses of small-sized fishes, the cytogenetics
of the Lebiasinidae was largely improved in the last years, showing differential patterns in …

Although crocodilians have attracted enormous attention in other research fields, from the
cytogenetic point of view, this group remains understudied. Here, we analyzed the …

The South American arowanas (Osteoglossiformes, Osteoglossidae, Osteoglossum) are
emblematic species widely distributed in the Amazon and surrounding basins. Arowana …