Results 91 to 100 of about 776 (163)

Caracterização citogenética de espécies da família Heptapteridae (Teleostei, Siluriformes) das bacias dos rios Cuiabá (MT) e Ivaí (PR) [PDF]

open access: yes, 2012
The Heptapteridae family is endemic to the Neotropics, but their phylogenetic relationships are still not well established, and cytogenetic studies are still scarce.
Barbosa, Ligia Magrinelli
core  

Karyotype Diversity in Two Populations of Rhamdia quelen (Pisces, Heptapteridae)

open access: yesCYTOLOGIA, 2004
Stivari, Marcia Keller   +1 more
openaire   +2 more sources

Anomalous specimens of Rhamdia quelen (Siluriformes: Heptapteridae) and Gymnotus cf. sylvius (Gymnotiformes: Gymnotidae)

open access: yes
Here we describe anomalies in two Neotropical freshwater fishes. Case 1 refers to a tumour above the left pectoral fin near the operculum of a specimen of Rhamdia quelen (Heptapteridae). Case 2 is a horizontal plane dichotomy of the caudal filament of an individual of Gymnotus cf. sylvius (Gymnotidae).
Correia-Silva, Guilherme   +6 more
openaire   +1 more source

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