Main Ref. | Whitehead, P.J.P., G.J. Nelson and T. Wongratana, 1988 |
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Remarks | Inhabits the upwelling system off Peru and Chile. Mainly within 80 km of coast, but occasionally as far out as 160 km, forming huge shoals, chiefly in surface waters (descending in daytime to 50 m, rising at night). Employs both filter- and particulate-feeding modes on diatoms and copepods (Ref. 42392). Its northern distribution in Peruvian waters is limited in some years by the El NiƱo phenomenon. |
Marine - Neritic | Marine - Oceanic | Brackishwater | Freshwater | |
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Marine zones / Brackish and freshwater bodies |
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Substrate | |
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Substrate Ref. | |
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Special habitats Ref. |
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Parasitism |
Feeding type | plants/detritus+animals (troph. 2.2-2.79) |
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Feeding type Ref. | Pauly, D., A. Jarre, S. Luna, V. Sambilay Jr., B.R. de Mendiola and A. Alamo, 1989 |
Feeding habit | filtering plankton |
Feeding habit Ref. | Whitehead, P.J.P., G.J. Nelson and T. Wongratana, 1988 |
Estimation method | Original sample | Unfished population | Remark | ||
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Troph | s.e. | Troph | s.e. | ||
From diet composition | 2.70 | 0.32 | |||
From individual food items | 2.86 | 0.38 | Trophic level estimated from a number of food items using a randomized resampling routine. | ||
Ref. | Pauly, D., A. Jarre, S. Luna, V. Sambilay Jr., B.R. de Mendiola and A. Alamo, 1989 |