SEXUAL SIZE DIMORPHISM OF SEA SNAKES IN TAIWAN

台灣海蛇雌雄異型之研究

黃文山(WEN-SAN HUANG)

《Collection and Research》 7期 (1996/06) Pp. 113-120

https://doi.org/10.6693/CAR.1996.7.5

摘要

A total of 140 museum specimens of 7 different species of sea snakes, Emydocephalus ijimae, Hydrophis cyanocintus, H. melanocephalus, Laticauda colubrina, L. laticau-data L. semifasciata, and Pelamis platurus, were examined. Snout-vent length (SVL), head length, head width, head depth, and tail length were measured. Females had larger SVLs than males in H. cyanocinctus and P. platurus. All head variables of females were larger than those of males in L. semifasciata. Female head lengths were larger than those of males in P. platurus, whereas males' head widths and depths were larger than those of females in H. melanocephalus. Tail lengths of male H. cyanocinctus, H. melanocephalus, and L. semifasciata were greater than those of the respective females.

關鍵字

Head sizes ； Body sizes ； Hydrophiidae ； Taiwan

並列摘要

本研究檢視保存於國立自然科學博物館的飯島式海蛇、青環海蛇、黑頭海蛇、黃唇青斑海蛇、黑唇青斑海蛇、闊帶青斑海蛇和黑背海蛇等七種共140條標本。測量每條海蛇的吻肛長、頭長、頭寬、頭高和尾長。雌性青環海蛇和黑背海蛇的吻肛長比雄蛇大。雌性闊帶青斑海蛇的所有頭部測量值皆比雄蛇大。雌性黑背海蛇的頭長比雄蛇大，然而雄性黑頭海蛇的頭高和頭寬皆比雌蛇大。雄性青環海蛇、黑頭海蛇和闊帶青斑海蛇的尾長比各自的雌蛇長。

並列關鍵字

頭部型質 ； 身體大小 ； 海蛇科 ； 台灣