Figure 3From: Cytogenetic studies in Eigenmannia virescens (Sternopygidae, Gymnotiformes) and new inferences on the origin of sex chromosomes in the Eigenmannia genusKaryotypes with 2n = 38, ZZ/ZW, obtained from Eigenmannia virescens collected in Benfica, Abaetetuba and Belém. (A & B) Male karyotypes stained with Giemsa and C-banding, respectively. Box: pair 15, bearing the NOR. (C & D) Female karyotypes stained with Giemsa and C-banding, respectively. Box: pair 15, bearing the NOR. Abbreviations: m-sm = metacentric-submetacentric; st-a = subtelocentric-acrocentric.Back to article page