Ecology Summary - Polydactylus macrophthalmus

言語:

主な資料
意見	Known only from three rivers on two Indonesian islands: Kapuas River, Kalimantan and Musi and Batanghari rivers, Sumatra. These rivers were part of one large river, the ancient Central or North Sunda River, on the Sundaland during the Pleistocene, the last cold period about 12,000 years ago. Geographic evidence indicates that the species was well adapted to the freshwater basins in this extensive Pleistocene river, whereas other Polydactylus species are generally marine. With Sundaland submerged to about 100 m, this species is now restricted to the 3 presently known localities. The longer pectoral filaments and a more slender body have been considered as an adaptation to its freshwater existence. The long pectoral filaments are useful as a sense organ to search for food in muddy waters (Ref. 40968). A food fish along the Kapuas River, Borneo (Ref. 9685).

主な資料

意見

Known only from three rivers on two Indonesian islands: Kapuas River, Kalimantan and Musi and Batanghari rivers, Sumatra. These rivers were part of one large river, the ancient Central or North Sunda River, on the Sundaland during the Pleistocene, the last cold period about 12,000 years ago. Geographic evidence indicates that the species was well adapted to the freshwater basins in this extensive Pleistocene river, whereas other Polydactylus species are generally marine. With Sundaland submerged to about 100 m, this species is now restricted to the 3 presently known localities. The longer pectoral filaments and a more slender body have been considered as an adaptation to its freshwater existence. The long pectoral filaments are useful as a sense organ to search for food in muddy waters (Ref. 40968). A food fish along the Kapuas River, Borneo (Ref. 9685).

Aquatic zones / Water bodies

	Marine - Neritic	Marine - Oceanic	Brackishwater	Freshwater
Marine zones / Brackish and freshwater bodies	超沿岸帯沿岸帯沿岸下帯	エピペラフィック中深海性エピペラフィックアビソペラギックホドペラギー	河口/潟/汽水性の海マングローブ沼地	河川湖沼洞窟もっぱら

Highighted items on the list are where Polydactylus macrophthalmus may be found.

Habitat

基板
基板参照
特別な生息地
特別な習慣参照

協会

参照
協会
関連
協会備考
寄生

供給

供給様式
給餌タイプ参照
食性
食性参照。

Trophic Level(s)

Estimation method	原本のサンプル		未漁獲人口		意見
Estimation method	Troph	s.e.	Troph	s.e.	意見
餌料組成から
個々の食物品目から
参照

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Aquatic zones / Water bodies

Habitat

協会

供給