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尖吻南茴鱼

尖吻南茴鱼
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 辐鳍鱼纲 Actinopteri
目: 胡瓜鱼目 Osmeriformes
科: 后鳍鲑科 Retropinnidae
属: 南茴鱼属 Prototroctes
种:
尖吻南茴鱼 P. oxyrhynchus
二名法
Prototroctes oxyrhynchus
Günther, 1870

尖吻南茴鱼Prototroctes oxyrhynchus),又名新西兰河鳟,是已灭绝胡瓜鱼目,生活于新西兰的低地河流。牠们长约20至40厘米。

尖吻南茴鱼像后鳍鲑生活在远洋带的浅水区。牠们于1800年代的夏天至冬天广泛分布在低地河流。牠们的生命周期可能如银鱼及后鳍鲑般,在淡水成长及产卵,初出生的幼鱼会被冲到海洋生活几个月。

尖吻南茴鱼的数量在欧洲人到达新西兰后开始减少,早到1870年代就已经有学者提出牠们减少的问题。于1923年,巴克(Te Rangi Hīroa)在北岛东面的罗托鲁瓦河发现尖吻南茴鱼。[2]于1930年,大英博物馆不知从何获得了尖吻南茴鱼的标本,有可能正是最后存活的尖吻南茴鱼。[3]自欧洲殖民开始后,向当地引入了鳟鱼 ,并大量伐林,可能正是导致尖吻南茴鱼灭绝的原因。

尖吻南茴鱼的近亲南茴鱼仍然在澳洲生存着,对牠们的研究可以帮助了解更多尖吻南茴鱼。

参考

  1. ^ World Conservation Monitoring Centre. Prototroctes oxyrhynchus. The IUCN Red List of Threatened Species 1996. [11 May 2006]. 
  2. ^ David Day. The Doomsday Book of Animals. New York: The Viking Press. 1981. 
  3. ^ Froese, R. & Pauly, D. (eds.) (2006). Prototroctes oxyrhynchus. FishBase. Version 2006-03.

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尖吻南茴鱼
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