Cytogenetical studies on fishes. III. Multiple sex chromosome mechanism in the filefish, Stephanolepis cirrhifer.

Derived cytogenetic traits, multiple NORs and B chromosomes in the compact karyotype of Canthigaster figueiredoi (Tetraodontiformes)

“…Simple XX-XY systems have been described in this order for the balistids Rhinecanthus verrucosus and R. aculeatus (Ojima, 1985), an XX-XO system in the triacanthids Triacanthus brevirostris (Choudhury et al, 1982), and multiple X 1 X 1 X 2 X 2 -X 1 X 2 Y systems in the monacanthids Stephanolepis cirrhifer (Murofushi, 1980) and S. hispidus (Sá-Gabriel & Molina, 2004). In Tetraodontidae there is a record of X 1 X 1 X 2 X 2 -X 1 X 2 Y sex chromosomes in Arothron nigropunctatus (Ojima, 1985).…”

A preliminary report on the phylogeny of five balistid fish in terms of several chromosome banding techniques in combination with a statistical analysis.

“…The five balistid fish proved to have XX/XY type sex-chromosome mechanism which can only be detected by C-banding technique (Fig. 1, right arrows), while Murofushi et al (1980) reported the multiple sex-chromosome mechanism in Stephanolepis cirrhi f er (Monacanthidae) ( Table I). The difference of the sex-chromosome mechanisms can also be used as evidence to support or refute proposals about the phylogeny of the Balistidae and the Monacanthidae, or about their familial interrelationship.…”

Complex sex chromosome system in Eigenmannia sp. (Pisces, Gymnotiformes)

“…This system of sex determination has been designated as a multiple system of t he X IX l X2X2 / X l X2Y type and has already been described in fishes (Uyeno & Miller, 1971;Uyeno & Miller, 1972;Thorgaard, 1978;Murofushi et al, 1980). The unfused homologue of the autosome fused to the Y and the corresponding pair in the female are designated as X2 chromosomes.…”