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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- 寺島 彰
- 京都大学理学部附属大津臨湖実験所
書誌事項
- タイトル別名
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- Three new species of the cyprinid genus Schizothorax from Lake Rara, northwestern Nepal.
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説明
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.
収録刊行物
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- 魚類学雑誌
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魚類学雑誌 31 (2), 122-135, 1984
The Ichthyological Society of Japan
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詳細情報 詳細情報について
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- CRID
- 1390282679743788544
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- NII論文ID
- 130003826185
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- ISSN
- 18847374
- 00215090
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可