• Journal of Ecology and Environment
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• 제33권3호
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• pp.237-244
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• 2010

In this study, we evaluated the distribution, habitat characteristics, and diet of two Korean freshwater turtle species (Chinemys reevesii, Pelodiscus sinensis) and an invasive turtle species (Trachemys scripta elegans) in the area surrounding the Seomjin River and the Nam River. We surveyed basking turtles in multiple locations along a 48-km stretch of the Seomjin River and in 99 reservoirs distributed along the Seomjin and Nam rivers from June to September, 2009. We observed 8 and 6 red-eared turtles in 3 reservoirs and at 3 sites in the Seomjin River, respectively, and 33 Reeve's turtles in 9 reservoirs. There were also 28 and 16 mud turtles detected at 15 sites along the Seomjin River and in 8 reservoirs, respectively. Among the 14 biotic and abiotic habitat characteristics that might influence the abundance of freshwater turtles in reservoirs, only the distance between a reservoir and the nearest residential areas was correlated negatively with abundance. With regard to the diet, all Reeve's and red-eared turtles investigated were determined to forage on water snails. Some turtles also foraged on vegetation and aquatic invertebrates. Additionally, we found fish in the stomach of one of the Reeve's turtles, and dragonflies in the stomachs of two red-eared turtles.

• 한국동물학회지
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• 제18권3호
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• pp.127-130
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• 1975

1) 자라의 비장을 싸고있는 皮膜은 筋內細胞가 없으며 哺乳類의 그것과 마찬가지로 망상섬유와 탄력섬유 및 교원섬유를 함유하고 있다. 2) 자라의 비장의 脾株는 개구리 비장보다 발달되고 짧은 脾株가 잘 발달되어 있다. 3) 자라 비장의 血管系는 哺乳類와 거의 비슷하나 특히 中心動脈이 잘 발달되고 脾洞의 발달은 포유류의 脾洞構造나 數量面에서 下等性을 보인다. 4) 자라 비장의 造血細胞의 출현빈도가 포유류와 양서류등 다른 脊椎動物보다 훨씬 많이 出現된다.