福建长乐一头搁浅柏氏中喙鲸的形态学记录

Morphological measurements of a Blainville’s beaked whale(Mesoplodon densirostris)stranded at Changle,Fujian Province,China

2015年8月15日在福建省福州市长乐区文岭镇石壁村的沙滩上搁浅1头柏氏中喙鲸(Mesoplodon densirostris)。该个体发现时体表无明显外伤,经救护无效后死亡。本文对该头柏氏中喙鲸进行了病理解剖、外部形态数据测量和骨骼系统描述。该个体为雄性,体长405.0 cm,体背部呈暗灰色,有白色的圆形或椭圆形疤痕。解剖发现内脏器官均无异常,胃内无食糜,仅有少量消化液,表明该个体在死亡前可能没有正常进食。头骨长690.0 mm,脊椎式为C7+T10+L11+Ca18=46,肋骨10对,V形骨9枚。骨骼系统与现有记录相符,数量和大小均在正常范围之内。此外,本文对比分析了柏氏中喙鲸在我国海域的历史搁浅与解剖记录,结果表明其广泛分布,然而当前仍缺乏该物种的基本信息,亟需展开调查研究。

On August 15,2015,an adult male Blainville’s beaked whale(Mesoplodon densirostris)was found stranded on the beach of Shibi Village in Wenling Town,Changle District,Fuzhou City,Fujian Province.This specimen showed no apparent signs of physical trauma on its body surface but succumbed despite rescue attempts.In our investigation,we conducted a comprehensive pathological autopsy,which included collecting external morphometric data and detailing an anatomical description of the skeletal system.The whale measured 405.0 cm in total body length and exhibited a dark gray epidermis with interspersed white,round or oval-shaped wound spots.The post-mortem examination revealed no pathological anomalies in any internal organs.Notably,the absence of food chyme in the stomach and the minimal presence of digestive fluid suggest that the whale had likely not ingested food for some time before its death.Cranial measurements indicated a skull length of 690.0 mm.The vertebral formula was recorded as C7+T10+L11+Ca18=46,with 10 pairs of ribs and 9 V-bones.The morphological characteristics of the skeletal system were consistent with existing records,with all observed counts and dimensions falling within the species’typical range.Additionally,this paper compares and analyzes the historical stranding and anatomical records of the Burkholder’s beaked whale in the waters of China,indicating its widespread distribution.However,basic information on this species is still lacking,and there is an urgent need for investigation and research.