Ecology of the Chinese stripe-necked turtle, Ocadia sinensis (Testudines: Emydidae), in the Keelung river, Northern Taiwan

Tien Hsi Chen*, Kuang Yang Lue

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

14 引文 斯高帕斯(Scopus)

摘要

An intensive ecological study of a large population of the Chinese stripe-necked turtle, Ocadia sinensis, was conducted in northern Taiwan from February 1995 to May 1996. Of 661 turtles captured and measured, there were 136 unsexed juveniles, 289 males, and 233 females; the sex ratio was significantly male-biased. Significant sexual size dimorphism was evident. Females grew larger than males; mean body size of females over four years was consistently larger than that of coeval males. X-ray photography revealed that females were gravid from March to May. Clutch size averaged 12.6 and varied from 7 to 17. Stomach contents collected from June to October 1995 revealed sexual differences in diet: males tended to consume animal matter, whereas females exhibited a dietary shift from carnivory to herbivory during growth from juvenile to adult.

原文英語
頁(從 - 到)944-952
頁數9
期刊Copeia
發行號4
DOIs
出版狀態已發佈 - 1998 十二月 30

ASJC Scopus subject areas

  • 生態學、進化論、行為學與系統學
  • 海洋科學
  • 動物科學與動物學

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