A great deal of information is known regarding the process of sex differentiation in fish, and
the mechanisms involved in primary sex determination are now beginning to be defined. A …

The Neotropical freshwater fish fauna is very rich—according to the most recent catalogue
71 families and 4,475 species have been described. However, only a small amount of …

The high-throughput analysis of satellite DNA (satDNA) content, by means of Illumina
sequencing, unveiled 45 satDNA families in the genome of Astyanax paranae, with repeat …

A karyotypic analysis was carried out using conventional staining and C-banding in 32
specimens of Astyanax scabripinnis (Pisces, Characidae) from Campos do Jordão (São …

Resource partitioning and the seasonal patterns of food intake of four characids (Astyanax
fasciatus, A. bimaculatus, A. schubarti and Cheirodon stenodon) were studied during 1988 …

Astyanax scabripinnis has been considered a species complex because it presents high
karyotypic and morphological variability among its populations. In this work, individuals of …

Astyanax fasciatus may be characterized as a chromosomally diversified 'species'
presenting distinct cytotypes, each with its specific variants. The sympatric and syntopic …

Neotropical fishes present a high chromosome diversity showing a wide diploid number
variation range, including different levels of ploidies, sex chromosomes, chromosome …

Several species belonging to different families of Brazilian freshwater fish are being studied
cytogenetically, and the results obtained thus far have indicated interesting peculiarities. We …

Astyanax is a genus of Characidae fishes currently composed of 155 valid species. Previous
cytogenetic studies revealed high chromosomal diversification among them, and several …