Predation on Fish Larvae and Eggs by the Hydromedusa Aequorea victoria at a Herring Spawning Ground in British Columbia
Predation on Fish Larvae and Eggs by the Hydromedusa Aequorea victoria at a Herring Spawning Ground in British Columbia
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维多利亚水母在不列颠哥伦比亚省鲱鱼产卵场捕食鱼类幼虫和鱼卵
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发表时间：
1989
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影响因子：
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通讯作者：
J. Purcell
中科院分区：
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作者：
J. Purcell
1983 年 3 月至 6 月期间，在不列颠哥伦比亚省温哥华岛库利特湾对软体浮游动物作为鱼卵和幼虫捕食者的重要性进行了研究。通过对单独收集的样本进行肠道内容物分析来评估维多利亚多管发光水母的饮食。甲壳类浮游动物被吃掉的比例较小，而幼虫、鱼类幼虫、水母和管水母被吃掉的比例高于它们在环境中的存在。许多鲱鱼幼虫（Clupea harengus pallasi）以及其他几个科的鱼类幼虫（主要是鲽科、鲽科、鲉科、鳅科、鳅科和鲆科）以及比目鱼（鲽科）的远洋卵被食用。当鲱鱼幼虫在3月中旬孵化时，海湾中的A. victoria medusae平均每只含有22条鲱鱼幼虫，占所有摄入猎物的48%。对鲱鱼和其他鱼类幼虫的捕食率是根据维多利亚鱼幼虫的数量计算的，...
The importance of soft-bodied zooplankton as predators of fish eggs and larvae was examined during March–June, 1983 in Kulleet Bay, Vancouver Island, British Columbia. The diet of the jellyfish Aequorea victoria was evaluated by gut content analysis of individually collected specimens. Crustacean zooplankters were eaten in lesser proportion, and larvaceans, fish larvae, hydromedusae, and siphonophores were eaten in greater proportion than their presence in the environment. Numerous herring larvae (Clupea harengus pallasi) were consumed, as well as the larvae of fishes in several other families (primarily Pleuronectidae, Cottidae, Scorpaenidae, Stichaeidae, Pholidae, and Gadidae), and the pelagic eggs of flatfish (Family Pleuronectidae). When herring larvae hatched in mid-March, A. victoria medusae in the bay contained an average of 22 herring larvae each, comprising 48% of all ingested prey. The predation rates on herring and other fish larvae were calculated from the numbers of larvae in A. victoria, the...