南极小须鲸（Balaenoptera acutorostrata）胎儿前肢和后肢的发育变化。

Developmental changes of the fore- and hind-limbs in the fetuses of the southern minke whale, Balaenoptera acutorostrata.

作者信息

Amasaki H, Ishikawa H, Daigo M

机构信息

Department of Veterinary Anatomy, Nippon Veterinary and Zootechnical College, Toba, Japan.

出版信息

Anat Anz. 1989;169(2):145-8.

PMID:2589636

Abstract

15 fetuses of southern minke whale, Balaenoptera acutorostrata (from 8.2 mm C.R.L. to 38.9 mm C.R.L.), obtained from the Kyodo whale company in Japan (in whaling seasons from 1982 to 1986), were used for the present study. The fore-limb first appears in the 11.4 mm fetus, and the hind-limb in the 15.3 mm fetus. The fore-limb develops progressively during gestation, while the hind-limb disappears by the 38.9 mm fetus. The critical period of limb development in southern minke whale was shown to be at a stage between that in the small sized species; Common Porpoise, Phocoena communis and Striped Dolphin, Prodelphinus caeruleoalbus, and in large one; Humpback Whale, Megaptera nodusa.

摘要

本研究使用了15头南极小须鲸（Balaenoptera acutorostrata）的胎儿（体长从8.2毫米到38.9毫米），这些胎儿于1982年至1986年捕鲸季从日本共同鲸鱼公司获得。前肢最早出现在体长11.4毫米的胎儿中，后肢最早出现在体长15.3毫米的胎儿中。前肢在妊娠期逐渐发育，而后肢在体长38.9毫米的胎儿时消失。南极小须鲸肢体发育的关键时期介于小型物种（普通鼠海豚，Phocoena communis和条纹海豚，Prodelphinus caeruleoalbus）和大型物种（座头鲸，Megaptera nodusa）之间的阶段。