ACTA Theriologica Sinica

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Species identification and morphological measurements of a pregnant minke whale(Balaenoptera acutorostrata acutorostrata)

WANG Zhen, TIAN Jiashen, LEI Liyuan, DU Jing, LIU Weidong, HAN Jiabo, LU Zhichuang   

  1. (Liaoning Ocean and Fisheries Science Research Institute, Dalian Key Laboratory of Conservation Biology for Endangered Marine mammals, Dalian 116023, China)
  • Online:2020-09-30 Published:2020-09-27

一头妊娠小须鲸的物种鉴定及外部形态测量

王震 田甲申 雷利元 杜静 刘卫东 韩家波 鹿志创   

  1. (辽宁省海洋水产科学研究院,大连市濒危海洋哺乳动物保护生物学重点实验室,大连 116023)
  • 通讯作者: 鹿志创 E-mail:luzhichuang@hotmail.com
  • 基金资助:
    辽宁省海洋与渔业厅科研项目(201822)

Abstract:

A dead whale was found by local fishermen on the coast of Zhangzi Island, Changhai County, Dalian, Liaoning on April 16, 2019. According to the following information (1) discovery location, (2) prominent ridges on head, 256 pairs of white baleen in the mouth and the white transverse band on the fin limb, (3) characteristics of Cytochrome b (Cyt b) gene sequence, the whale was identified as the North Pacific minke whale (Balaenoptera acutorostrata acutorostrata). It was found that the whale was in pregnancy. The results showed that the body length of minke whale was 640.0 cm and the body weight was 3350.0 kg. The fetus was a 7-8 months old male, with its body length 123.0 cm and body weight 26.3 kg. The body length of dead minke whale was less than the minimum value of the previous recorded pregnant minke whale. Our study is to record the morphological characteristics of the dead minke whale samples and enrich the basic biological data of large cetaceans in China.

Key words:

关键词: 小须鲸, 妊娠, 物种鉴定, 外部形态