Breeding behaviour and distribution of the tucunaréCichla aff. monoculus in a clear water river of the Bolivian Amazon
作者： H. Muñoz , P. A. Van Damme , F. Duponchelle
DOI: 10.1111/J.1095-8649.2006.01177.X
关键词: Zoology 、 Cichla 、 Ecology 、 Monoculus 、 Main river 、 Biology 、 Seasonal breeder 、 Fecundity 、 Channel (geography) 、 Nest 、 Spawn (biology)
摘要: The breeding behaviour and distribution of tucunare Cichla aff. monoculus were studied for 2 months during the season in Paragua River, Bolivia. Tucunare more abundant old remnant channels isolated lakes than main river channel. period was delayed c. 1 month compared to lakes. batch fecundity ranged between 3712 10 355 females weighing 460 1380 g, respectively. Gonad analysis egg-guarding or juvenile-guarding showed that a female able spawn once season. Nests significantly larger deeper river. maximum depth nests also differed significantly, being channel channels.
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