達摩鯊屬

達摩鯊屬(学名:Isistius)為黑棘鮫科下的一,是全世界第二小的鯊魚,本屬物種最大的特徵在於牠們奇特的齒式與覓食行為[2]

達摩鯊屬
化石时期: 贊尼特期 - 現今
雪茄達摩鯊I. brasiliensis
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 软骨鱼纲 Chondrichthyes
亚类: 鲨总目 Selachimorpha
目: 角鯊目 Squaliformes
科: 黑棘鮫科 Dalatiidae
属: 達摩鯊屬 Isistius
T. N. Gill, 1865
模式種
雪茄達摩鯊 I. brasiliensis
(Quoy & Gaimard, 1824)

  • 雪茄達摩鯊 Isistius brasiliensis Quoy & Gaimard, 1824
  • 大齒達摩鯊 Isistius plutodus Garrick & S. Springer, 1964
  • Isistius triangulus Probst, 1879
  • Isistius trituratus Winkler, 1876

習性

和其他鯊魚一樣,達摩鯊一生也會不斷替換牙齒。但是牠們在替換牙齒時,會一次替換整組而不是單顆牙齒[3]

達摩鯊通常會攻擊魚群,或者在漁船附近巡遊尋找容易攻擊的獵物。牠們會游到獵物的身邊,用其尖銳的牙齒直接咬下一口肉並離開。一些大型海洋生物如旗魚鯨豚等身上常常可以看到達摩鯊啃咬所留下的傷口[4]。達摩鯊一次可以吃下將近體重 50% 的食物。

參考文獻

  1. Sepkoski, Jack. . Bulletins of American Paleontology. 2002, 364: 560. (原始内容存档于2011-09-30).
  2. Jones, E. C. 1971. Isistius brasiliensis. a squaloid shark. the probable cause of crater wounds on fishes and cetaceans; Fish. Bull. 69.791-98.
  3. Strasburg, Donald W.; The Diet and Dentition of Isistius brasiliensis, with Remarks on Tooth Replacement in Other Sharks; Copeia, Vol. 1963, No. 1, Mar. 30, 1963 (pp. 33-40) Published by: American Society of Ichthyologists and Herpetologists, Stable URL: https://www.jstor.org/stable/1441272 页面存档备份,存于
  4. Papastamatiou Yannis P., Wetherbee, Brad M., O'Sullivan, John, Goodmanlowe Gwen D. Lowe, Christopher G.; Foraging ecology of Cookiecutter Sharks (Isistius brasiliensis) on pelagic fishes in Hawaii, inferred from prey bite wounds.; Environmental Biology of Fishes, Volume 88, Number 4, 361-368, doi:10.1007/s10641-010-9649-2
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