Food Habits and Dietary Variability of Pelagic Nekton off Oregon and Washington, 1979-1984
Food Habits and Dietary Variability of Pelagic Nekton off Oregon and Washington, 1979-1984
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俄勒冈州和华盛顿州近海中上层游生物的饮食习惯和饮食变化，1979-1984 年
DOI：
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发表时间：
1987
期刊：
影响因子：
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通讯作者：
W. Pearcy
中科院分区：
文献类型：
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作者：
R. Brodeur;H. Lorz;W. Pearcy
1979 ~ 1984年在华盛顿和俄勒冈州近海用小网眼围网采集了20种浮游游泳动物，对其食性进行了调查。四种鲨鱼（角鲨，Squalus acanthias;汤鳍鲨，Galeorhinus zyopterus;青鲨，Prionace glauca;和切喉鳟鱼，萨尔莫clarki）主要以鱼为食。六种（银鲑、虹鳟、奇努克
salmon，O. tshawytscha;黑岩鱼，黑眼鲷;黄尾岩鱼，S. f1 avidus; sablefish，Anoplopoma fimbria;和jack mackerel，Trachurus fabricus）
同时消耗浮游生物和浮游生物其余物种（市场鱿鱼，Loligo opalescens;美洲西鲱，Alosa saparissima;太平洋鲱鱼，Clupea harengus pallasi;北方鲱鱼，Engraulis mordax;粉红
salmon，O. gorbuscha;冲浪胡瓜鱼，Hypomesus pretiosus;太平洋无须鳕，Merluccius productus;太平洋秋刀鱼，Cololabis saira;太平洋鲭鱼，Scomber sports;
和水母，Icichthys lockingtom）主要是浮游动物。有大量的年际，季节性和地理变化的饮食，
几个物种主要是由于猎物的变化。幼鲑并不常被这种鱼类所食用（PDF文件包含36页）。
The food habits of 20 species of pelagic nekton were investigated from collections made with small-mesh purse seines from 1979-84 off Washington and Oregon. Four species (spiny dogfish, Squalus acanthias; soupfin shark, Galeorhinus zyopterus; blue shark, Prionace glauca; and cutthroat trout, Salmo clarki) were mainly piscivorous. Six species (coho salmon, Oncorhynchus kisutch; chinook
salmon, O. tshawytscha; black rockfish, Sebastes melanops; yellowtail rockfish, S. f1avidus; sablefish, Anoplopoma fimbria; and jack mackerel, Trachurus symmetricus)
consumed both nektonic and planktonic organisms. The remaining species (market squid, Loligo opalescens; American shad, Alosa sapidissima; Pacific herring, Clupea harengus pallasi; northern anchovy, Engraulis mordax; pink
salmon, O. gorbuscha; surf smelt, Hypomesus pretiosus; Pacific hake, Merluccius productus; Pacific saury, Cololabis saira; Pacific mackerel, Scomber japonicus;
and medusafish, Icichthys lockingtom) were primarily planktonic feeders. There were substantial interannual, seasonal, and geographic variations in the diets of
several species due primarily to changes in prey availability. Juvenile salmonids were not commonly consumed by this assemblage of fishes (PDF file contains 36 pages.)