<b>Genetic variability in a <em>Leporinus lacustris</em> Campos, 1945 (Osteichthyes: Anostomidae) population from <em>Lagoa do Carão</em> (Upper <em>Paraná</em> River floodplain), Brazil</b> - DOI: 10.4025/actascibiolsci.v27i1.1370

Abstract

A Leporinus lacustris population from the floodplain of Upper Paraná River was analyzed for genetic diversity by allozyme data. Specimens were sampled in Southern Brazil, at Lagoa do Carão (22o44’S/53o17’W) in the floodplain of Upper Paraná River. A total of thirty loci were identified in sixteen enzymatic systems (AAT, ACP, ADH, EST, GDH, G3PDH, G6PDH, GPI, IDHP, L-IDDH, LDH, MDH, MDHP, PER, PGM, and SOD), on 15% corn starch gel electrophoresis. Proportions of polymorphic loci were estimated as 26.67%. Expected heterozygosity was estimated as 0.0806 ± 0.0313, which was lower than previous estimates for L. friderici, L. elongates and L. obtusidens from the Tibagi River, a tributary of the Paraná River basin. The low heterozygosity of the L. lacustris analyzed population could be attributed to the sedentary habit of this species