Rodrigo Rojas José, Maravilla Erick, Chicas Francisco
Rev Biol Trop. 2004 Mar;52(1):163-70.
Abstract: A total of 175 spotted snapper Lutjanus guttatus were collected monthly in the Los Cobanos and Puerto La Libertad, El Salvador, from January to December 2000 to determine its feeding habits. The fishes studied ranged 9.8 - 58.0 cm in total length. Were collected using push-net and hook and line. This snapper is a bentonic opportunistic carnivorous predator. The total biomass of the stomach contents was 260.5 g. Crustaceans (Squillidae, Portunidae, Dynomenidae. Penaeidae, Sicyoniidae, Callianassidae), were the most abundant group: they accounted for 50.4% of the total biomass. Numerically, Portunus asper was the most abundant prey. Ontogenic differences were observed in the diet. In juveniles (16 cm TL). at any time of the year, the most frequent and abundant components were crustaceans and in adults were crustaceans, fishes and mollusks. The relative importance of different components of the diet was assessed with two indexes that combine. in different ways. percentage frequency of occurrence, percentage number and percentage weight of prey categories. The commercial use this resource and the absence of management strategies are discussed.
2000年1月至12月，每月在萨尔瓦多的洛斯科瓦诺斯和拉利伯塔德港采集175条斑笛鲷，以确定其摄食习性。所研究的鱼全长9.8 - 58.0厘米。使用推网和钓线进行采集。这种笛鲷是一种底栖机会主义肉食性捕食者。胃内容物的总生物量为260.5克。甲壳类动物（虾蛄科、梭子蟹科、蝉蟹科、对虾科、铠甲虾科、美人虾科）是最丰富的类群：它们占总生物量的50.4%。从数量上看，粗糙梭子蟹是最丰富的猎物。在饮食中观察到了个体发育差异。在幼鱼（全长16厘米）中，一年中任何时候最常见和丰富的成分是甲壳类动物，而在成鱼中是甲壳类动物、鱼类和软体动物。用两种指数评估了饮食中不同成分的相对重要性，这两种指数以不同方式结合了猎物类别的出现频率百分比、数量百分比和重量百分比。讨论了该资源的商业利用情况以及缺乏管理策略的问题。
