Occurrence of natural triploidy in Rhamdia quelen (Siluriformes, Heptapteridae)
, “Occurrence of natural triploidy in Rhamdia quelen (Siluriformes, Heptapteridae)”, vol. 9, pp. 1929-1935, 2010.
Five specimens of Rhamdia quelen collected from the Lindóia Stream, PR, Brazil, were cytogenetically analyzed. The diploid chromosome number found was 58, including 30 metacentric, 16 submetacentric, 10 subtelocentric, and 2 acrocentric chromosomes. Supernumerary or B chromosomes, frequently observed in this fish group, were not detected. One of the individuals was triploid, with 3n = 87.
