Three new species of the cyprinid genus Schizothorax from Lake Rara, northwestern Nepal.

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Other Title
  • ララ湖 (西北ネパール) から得られたSchizothorax属 (コイ科) の3新種

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Description

Schizothorax raraensis, S. macrophthalmus and S.nepalensis are described as new species of the Schizothoracinae, Cyprinidae, from LakeRara, northwestern Nepal. S.raraensis and S.macrophthalmus are distinguished from other species of the genus Schizothorax by the combination of the following characters: the position of ventral and dorsal fins, length of the dorsal, length of the barbel, head length and interorbital width.In addition to these differences, the latter species was characterized by the snout length and eye diameter. S.nepalensis was characterized by the non-sharp horny sheath and the length of barbels.<BR>The food habits of the three species were different from each other.Reproductive isolation was observed between S.raraensis and S.macrophthalmus.<BR>In spite of an intensive survey in many river systems in Nepal, these species were found only in Lake Rara.Therefore, these species are considered endemic to Lake Rara.It seems that sympatric speciation in Lake Rara has been brought about by the more diverse environment.

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Details 詳細情報について

  • CRID
    1390282679743788544
  • NII Article ID
    130003826185
  • DOI
    10.11369/jji1950.31.122
  • ISSN
    18847374
    00215090
  • Text Lang
    en
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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