Evolutionary dynamics of the B chromosomes in the fish species <i>Prochiloduslineatus</i> Valenciennes, 1837 of the Parana River Basin.

ABSTRACT: The fish species Prochiloduslineatus has an interesting B chromosome system, with three morphological types as acrocentric, metacentric, and submetacentric. However, most cytogenetic studies on this species are restricted to the natural population of the Mogi Guaçu River. Given this, the present work aimed to study the structure karyotypic profile as well as the occurrence of supernumeraries in P.lineatus in several localities in the Paraná River basin, where this species is abundant. The results obtained showed a predominantly conserved karyotypic macrostructure and the presence of B chromosomes in all the seven localities studied, with the exception of the Apa River. Additionally, new variants of morphological characteristics were found in the population of the Batalha Rive

SUBMITTER: Penitente M 

PROVIDER: S-EPMC11773350 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature