| chromosomal polymorphism in rineloricaria lanceolata günther, 1868 (loricariidae: loricariinae) of the paraguay basin (mato grosso do sul, brazil): evidence of fusions and their consequences in the population. | rineloricaria is the most species-rich genus of the loricariinae (armored catfish) with 65 valid species. however, the karyotype structure is known only for eight species in this group. this study provides cytogenetic data for rineloricaria lanceolata collected from the upper paraguay basin (mato grosso do sul). the specimens revealed extensive chromosomal polymorphism constituting 10 karyotypes, which differed in the diploid number (48 to 45 chromosomes) and fundamental number (fn) between 52 a ... | 2014 | 25069031 |