Cytogenetical studies on fishes. I. Karyotypes of four filefishes.

Cytogenetical studies in five Atlantic Anguilliformes fishes

The order Anguilliformes comprises 15 families, 141 genera and 791 fish species. Eight families had at least one karyotyped species, with a prevalence of 2n = 38 chromosomes and high fundamental numbers (FN). The only exception to this pattern is the family Muraenidae, in which the eight species analyzed presented 2n = 42 chromosomes. Despite of the large number of Anguilliformes species, karyo...

Cytogenetical studies on swine intersexes.

Cytogenetical and histochemical studies on curcumin in male rats

Curcumin is a major component of the curcuma species, commonly used as a yellow coloring and flavoring agent in foods. Curcumin has been demonstrated to have potent antioxidant, anti-inflammatory activity and has shown anticancer properties in many rodent models. There is the perception that since compounds are natural, they are devoid of toxicity and safe to use. Some of the active compounds i...

Studies on the Optomotor Reaction of Fishes

The optomotor reaction on fishes has been applied in many previous studies of their visual sensell-4l, their orientating behavior in stream5l. 6l or their swimming speed5l.1l, because this reaction was considered as a so-called unconditioned response which organisms show immediately when placed in a moving scene. However, the systematic study does not seem to have been conducted yet about the c...

Karyotypes of four rats (Rodentia: Muridae) from Sulawesi (Celebes), Indonesia.

Karyotypes and information pertinent to genetic mapping of small mammals in remote areas of Southeast Asia are practically nonexistent. The diverse island complex of the Indo-Australian archipelago offers a unique situation to study the interrelationships of the taxonomically confused order Rodentia. Yosida (1969, 1971, 1973) reported karyotypes of two species of rodents from Makassar, located ...