Schooling behavior of Mugil curema (Perciformes: Mugilidae) in an estuary in southeastern Brazil
Schooling behavior of Mugil curema (Perciformes: Mugilidae) in an estuary in southeastern Brazil
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DOI：
10.1590/s1679-62252007000100012
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发表时间：
2007-03-01
影响因子：
1.7
通讯作者：
Uieda, Virginia Sanches
中科院分区：
文献类型：
--
作者：
Carvalho, Carolina Delgado de;Corneta, Carolina Marocco;Uieda, Virginia Sanches
在河口和浅海水域，大量的乌鱼群，Mugilidae。我们报道了在巴西东南部乌巴图巴的坎托达帕西恩西亚河河口，幼鱼Mugil curema的觅食行为。小型鱼群(15至35 mm TL)由数量较多的个体(最多100个)组成，主要在浅水近岸水域觅食，而大型鱼群(40至100 mm TL)仅在较深水域被观察到。观察到了三种游泳模式：静止进食、觅食时缓慢移动和快速移动。观察到的学校结构和行为的变化似乎与捕食风险和食物摄入量增加之间的平衡有关。
Schools of mullets, Mugilidae, are abundant in estuaries and shallow marine waters. We report on the schooling behavior of juvenile white mullet, Mugil curema, in the estuary of the Canto da Paciencia stream, in Ubatuba, southeastern Brazil. Schools of small fish (15 to 35 mm TL) were composed of a larger number of individuals (up to a hundred individuals), and were found feeding mainly in shallow nearshore waters, whereas schools of larger fish (40 to 100 mm TL) were observed only in deeper waters. Three patterns of swimming were observed for the schools: stationary feeding, slow movement while searching for food, and rapid displacement. The variations observed in school structure and behavior seem to be related to the balance between predation risk and increasing food intake.