Comparative analysis of the diets of smaller odontocete cetaceans along the coast of southern Africa
Comparative analysis of the diets of smaller odontocete cetaceans along the coast of southern Africa
复制标题
南部非洲沿海小型齿鲸类饮食的比较分析
DOI：
10.2989/02577619209504746
复制
发表时间：
1992
影响因子：
1.2
通讯作者：
P. Best
中科院分区：
文献类型：
--
作者：
K. Sekiguchi;N. Klages;P. Best
对20种小型齿鲸的食性进行了调查。这些材料是在1966年至1990年期间沿南部非洲海岸沿着收集的，其中包括158只搁浅的动物，29只偶然死亡的动物和49只在许可证下捕获的动物。共鉴定出鱼类34科57种，头足类24科89种。大部分齿鲸类以未被商业开发的头足类和鱼类为食，或以小于商业利用尺寸的鱼类为食。然而，被Delphinus delphis和Lagerhynchus obscurus吃掉的沙丁鱼和沙丁鱼的平均大小大于商业上最常见的大小。猎物的种类组成反映了不同齿鲸类的近岸-近海分布（可能还有觅食深度）。Tursiops truncatus和Cephalorhynchus bissidii距离海岸最近，D. delphis和L. obscurus在大陆架上。其余的分布在货架边缘和刚刚关闭的。
The diets of 20 species of smaller Odontoceti were investigated. The material was collected along the southern African coast between 1966 and 1990 and included 158 strandings, 29 animals killed incidentally and 49 animals caught under permit. In total, 57 species in 34 families of fish and 89 species in 24 families of cephalopods were identified from remains in the 236 stomachs investigated. Most Odontoceti fed on commercially unexploited cephalopods and fish, or on fish below commercially utilized sizes. However, the average sizes of anchovy and pilchard eaten by Delphinus delphis and Lagenorhynchus obscurus were larger than the sizes most frequently taken commercially. The species composition of the prey items reflected the onshore-offshore distribution (and possibly the foraging depths) of different Odontoceti. Tursiops truncatus and Cephalorhynchus heavisidii were closest to shore and D. delphis and L. obscurus over the continental shelf. The rest were distributed around the shelf-edge and just off th...