Stomach contents of cetaceans stranded in the Canary Islands 1996-2006
Stomach contents of cetaceans stranded in the Canary Islands 1996-2006
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DOI：
10.1017/s0025315409000290
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发表时间：
2009-08-01
影响因子：
1.2
通讯作者：
Pierce, G. J.
中科院分区：
文献类型：
--
作者：
Fernandez, R.;Santos, M. B.;Pierce, G. J.
对 23 只鲸目动物的胃内容物进行了分析，这些鲸目动物包括 1996 年至 2006 年间滞留在加那利群岛的海豚科、斑鲸科、鲸科和紫鲸科的 12 种个体。在2个胃中发现了头足类下颌骨（喙），在4个胃中发现了鱼类遗骸（耳石和颌骨）。两个胃里只装着眼睛的晶状体。海豚吃的头足类动物主要来自Ommastrephidae、Sepiidae和Enoploteuthidae科，而鲸鱼则主要捕食远洋鱿鱼科Histiotheutidae和Cranchiidae的标本。鱼类遗骸包括海豚胃中的中上层物种（即长嘴鱼、Belone belone）和深海物种（即黑鞘鱼、Aphanopus carbo、灯笼鱼、Lampadena luminosa）和侏儒抹香鲸（Kogia breviceps）胃中的底层物种（Lophius sp.）。大多数已确定的猎物物种不具有商业利益，但其中一种抹香鲸（Physeter macrocephalus）的胃内容物中含有一个鱼钩。在接受检查的鲸目动物中，有五只（22%）的胃里也有塑料碎片，其中大塑料物品是被深潜的条食鲸吞下的。
Stomach contents were analysed from 23 cetaceans, including individuals Of 12 species from the families Delphinidae, Physeteridae, Kogiidae and Ziphiidae, stranded between 1996 and 2006 in the Canary Islands. Cephalopod mandibles (beaks) were found in 2 1 stomachs and fish remains (otoliths and jaw bones) appeared in 4 stomachs. Two stomachs contained only eye lenses. Cephalopods eaten by dolphins were mainly from the families Ommastrephidae, Sepiidae and Enoploteuthidae, whereas whales had mainly taken specimens of the oceanic squid families Histiotheutidae and Cranchiidae. Fish remains included a pelagic species (i.e. garfish, Belone belone) in dolphin stomachs and bathypelagic (i.e. black scabbard fish, Aphanopus carbo, lantern fish, Lampadena luminosa) and demersal species (Lophius sp.) in a pygmy sperm whale (Kogia breviceps) stomach. Most of the prey species identified are not of commercial interest but one of the sperm whales (Physeter macrocephalus) contained a fishing hook among the stomach contents. Five (22%) of the cetaceans examined had also plastic debris in their stomachs, with big plastic items being taken by deep diving teuthophagous whales.