Food Habits of Atlantic Sturgeon off the Central New Jersey Coast
作者:
JamesH. Johnson,
DavidS. Dropkin,
BarbaraE. Warkentine,
JosephW. Rachlin,
WilliamD. Andrews,
期刊:
Transactions of the American Fisheries Society
(Taylor Available online 1997)
卷期:
Volume 126,
issue 1
页码: 166-170
ISSN:0002-8487
年代: 1997
DOI:10.1577/1548-8659(1997)126<0166:FHOASO>2.3.CO;2
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Limited information exists on the marine diet of the Atlantic sturgeonAcipenser oxyrinchus oxyrinchus. We examined the food habits of 275 Atlantic sturgeon (total length, 106–203 cm) caught in the commercial fishery off the coast of New Jersey. Stomachs were provided by fishermen. Significantly more stomachs were empty in the spring than in the fall. Sand and organic debris were a major component in the stomachs (26.3–75.4% by weight). Polycheates were the primary prey group consumed, although the isopodPolitolana concharumwas the most important individual prey eaten. Mollusks and fish contributed little to the diet. Some prey taxa (i.e., polychaetes, isopods, amphipods) exhibited seasonal variation in importance in the diet of Atlantic sturgeon. Identification of the offshore diet of Atlantic sturgeon is an important step in developing a better understanding of the life history requirements and marine ecology of this species.
点击下载:
PDF (405KB)
返 回