STRONG EVIDENCE has accumulated to indicate that erythropoiesis in mammals is under the control of a circulating principle, the erythropoiesisstimulating factor ( ESF ) or erythropoietin.1’2 A similar regulatory system may be operative in amphibians and birds.3’4 The ESF appears in large quantities in the plasma of animals subjected to bleeding or low oxygen pressures’ and its production is inh...

Somatolactin (SL), a specific pituitary hormone belonging to the prolactin (PRL) super family, is involved in background adaptation, osmoregulation, reproduction and fatty acid metabolism. The goal of this study was to examine the gene transcription of SL changes in the ovary of blue gourami females (Trichogaster trichopterus) during oogenesis by quantitative real-time polymerase chain reaction...

Seven species of fishes, 6 species of mollusks, 1 species of crab, and 1 species of shrimp were collected from 12 natural freshwater sites from 5 provinces: Lumpang, Phrae, Phayao, Chiang Rai and Chiang Mai during the Rainy season of 2000. Fishes, Channa striatus, Dermogenus pusillus, Oxyeleotris marmoratus, Trichogaster trichopterus and Trichopsis vittatus were examined for helminths and 34.69...