Dopamine neurotransmission regulates various brain functions, and its regulatory roles are mediated by two families of G protein-coupled receptors: the D1 and D2 receptor families. In mammals, the D1 family comprises two receptor subtypes (D1 and D5), while the D2 family comprises three receptor subtypes (D2, D3 and D4). Phylogenetic analyses of dopamine receptor genes strongly suggest that the...

Integrins are a large family of multidomain α/β cell signaling receptors. Some integrins contain an additional inserted I domain, whose earliest expression appears to be with the chordates, since they are observed in the urochordates Ciona intestinalis (vase tunicate) and Halocynthia roretzi (sea pineapple), but not in integrins of earlier diverging species. The domain’s presence is viewed as a...

Đã xác định được 65 loài cá rạn san hô thuộc 48 giống, 27 họ, 15 bộ của 2 lớp (cá Sụn – Chondrichthyes và xương Osteichthyes) ở vịnh Xuân Đài, thị xã Sông Cầu, tỉnh Phú Yên. Trong số này, ghi nhận 30 có giá trị bảo tồn theo các thứ hạng khác nhau; 26 giải trí, dùng trong nuôi làm cảnh, lặn ngắm sử dụng câu thư giãn; 3 4 khả năng gây nuôi; thể hại cho con người thông qua sát thương bằng gai vây ...

Rhamnocercus stichospinus Seamster and Monaco, 1956 (Diplectanidae) parasitic on the sciaenid fish Menticirrhus americanus from the coastal zone of the State of Rio de Janeiro, is redescribed and recorded for the first time in the South American Atlantic Ocean. The generic diagnosis of Rhamnocercus is emended to accommodate the presence of confluent intestinal ceca in R. stichospinus.

Seventeen morphometric and seven meristic body characteristics were examined in 406 specimens of damselfish (234 females and 172 males) caught in the middle Adriatic (near the Korčula and Kopište Islands). The differences between the mean values of the measured morphometric characteristics in the males and females were not statistically significant. Modes were identical in males and females for...