バシヨウカジキHistiophorus orientalis (TEMMINCK et SCHLEGEL)の甲状腺について

概要

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In the present paper the writer reported on the thyroid gland of the sailfish, Histiophorus orientalis (TEMMINCK et SCHLEGEL). They have a large, discre ?? e compact masses of thyroid, which can be thyroidectomized without difficulty from the other surrounding tissues. 1. The thyroid gland of the sailfish lies on the dorsal cephalic end of the thick ventral aorta, and extends on the bifurcated region of the 1st and the 2nd afferent branchial arteries. So that these spherical soft masses are consisted of a anterrior lobe and a posterior lobe. 2. Ratio of fresh wet weight of the sailfish thyroid/1kg of body weigt is 21.44mg and also aceton dry weight is 4.85mg. There is no remarkable unbalance between the weight of the both lobes. 3. The histological observation of the sailfish thyroid showed obvious hype ?? activity with columnar epithelium and lack of colloid. The lumea of the follicles filled with granular substances or rather reticular fibers. 4. The writer thought that the figure of this preparation revealed the exhaution of the colloid, namely, the secretion of thyroid hormones.
公益社団法人日本水産学会の論文