魚類のメラニン細胞擴張ホルモンニ就いて

Abstract

Jores reported that melanophorhormone in pituitary body is closely related with sight in darkness of animals and plenty of this hormone is found in nocturnal animals or animals kept in darkness. Investigating with a dozen of fishes, the present authors confirm that the same holds good for fish, and pituitary bodies of bottom fishes or deep-sea fishes are far richer in the hormone in question than pelagic fishes.