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Stock densities, growth and survival for pacu (Piaractus mesopotamicus)

机译:Pacu(Piaractus mesopotamicus)的种群密度,生长和存活率

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摘要

Stocks of the indigenous freshwater pacu (Piaractus mesopotamicus) and other omnivorous species have been adversely affected by environmental changes in the La Plata river basin in Argentina; in particular, dam construction and pollution from industrial, agriculture and organic matter. These species have almost disappeared from Uruguay River, while they have been reported as scanty to medium and low in the Parana river (Quiros 1990).
机译:阿根廷拉普拉塔河流域的环境变化对土著淡水pacu(Piaractus mesopotamicus)和其他杂食性物种的种群产生了不利影响;特别是大坝的建设以及工业,农业和有机物的污染。这些物种几乎已从乌拉圭河中消失,而据报导它们在巴拉那河中稀少至中低(Quiros 1990)。

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