北部湾海域的江豚  

FINLESS PORPOISES IN THE COASTAL WATERS OF BEIBU GULF,SOUTH CHINA

作　　者：鲁慧[1] 方展强[1] 

机构地区：[1]华南师范大学生命科学学院,广东广州510631

出　　处：《华南师范大学学报（自然科学版）》2006年第3期109-115,共7页Journal of South China Normal University(Natural Science Edition)

基　　金：广东省科技计划资助项目(2003A3050102;2004B40101015)

摘　　要：从北部湾海域获得11只江豚标本,测量了其外部形态的26个生物学参数,包括体质量、体长、体围、背部棘状小结节等.对内脏及胃含物称重,并详细鉴定食物种类,结果显示:江豚食谱广,以鱼为主,食物组成与该海域的鱼类区系相似.测量了背、腹部前、中、后6个位置的脂肪层厚度,并根据背部棘状小结节的分布,判定为南方亚种Neophocaena phocaenoides.除了大小尺度不同,江豚幼体与成体间在外部形态和内部器官的分化上差别不大.Eleven of Finless Porpoises （ Neophocaena phocaenoides） were collected from the coastal waters of Beibu Gulf between March and May, 2005. Twenty - six parameters about external appearances which covered body weight, body length, circumference, prickles on the back, were measured. The inner organs and stomach contents were weighed and analyzed. The results indicated that the prey of finless porpoise range is wide and main in fish, and stomach contents conform with the fish fauna of Beibu Gulf, South China. Measuring the fat depth of six positions which covered the foreside, middle, offside of back and abdomen, and according to the prickles, the finless porpoises belong to the N. p. phocaenoides subspecies. As a result of the measurement, there is no differentiation on body shape and inner organs between young calfs and adults.

关 键 词：江豚 生物学参数 食性 北部湾 

分 类 号：Q954.3[生物学—动物学]