Barros M C, Fraga E C, Birindelli J L O
Laboratório de Genética e Biologia Molecular, Centro de Estudos Superiores de Caxias, Universidade Estadual do Maranhão, Caxias, MA, Brazil, 65604-380.
Braz J Biol. 2011 May;71(2):375-80. doi: 10.1590/s1519-69842011000300006.
The Itapecuru is a relatively large river in the northeastern Brazilian state of Maranhão. During several expeditions to this basin, we collected 69 fish species belonging to 65 genera, 29 families and 10 orders. Characiformes and Siluriformes were the orders with the largest number of species and Characidae, Loricariidae, Cichlidae, Auchenipteridae and Pimelodidae were the richest families. About 30% of the fish fauna of the Itapecuru basin is endemic or restricted to northeastern Brazil. Just over a fifth (22%) of the species is also known to occur in the Amazon basin and only a few are more widely distributed in South American.
伊塔佩库鲁河是巴西东北部马拉尼昂州的一条相对较大的河流。在对该流域进行的几次考察中，我们收集了69种鱼类，它们分属于65个属、29个科和10个目。脂鲤目和鲶形目是物种数量最多的目，脂鲤科、甲鲶科、丽鱼科、项鳍鲶科和油鲶科是种类最丰富的科。伊塔佩库鲁河流域约30%的鱼类区系是特有种或仅限于巴西东北部。略多于五分之一（22%）的物种也见于亚马逊河流域，只有少数物种在南美洲分布更广。
