A seventeen-year study of the rose star Crossaster papposus population in a coastal bay in southeast Alaska

被引：14
作者：
Carlson, HR
Pfister, CA
机构：
[1] NOAA, Natl Marine Fisheries Serv, Alaska Fisheries Sci Ctr, Auke Bay Lab, Juneau, AK 99801 USA
[2] Univ Chicago, Dept Ecol & Evolut, Chicago, IL 60637 USA
来源：
MARINE BIOLOGY | 1999年 / 133卷 / 02期
基金：
美国国家科学基金会; 美国安德鲁·梅隆基金会;
关键词：
D O I：
10.1007/s002270050461
中图分类号：
Q17 [水生生物学];
学科分类号：
071004 ;
摘要：
A 17 yr study of a population of the rose star Crossaster papposus (Linnaeus, 1767) in Auke Bay, near Juneau, Alaska, used SCUBA to follow a total of 956 individually marked stars. Population density was relatively constant over the 17 yr of study, although the influx of smaller individuals varied by an order of magnitude. Growth in diameter of individual stars was inversely related to size, with the largest individuals showing negligible growth for periods of months or years. Annual survivorship was relatively high (from 76.3 to 90.4%), and some individuals persisted throughout the study, indicating longevities of at least 20 yr in this species. Observations of food habits indicated that the principal prey item is the reddish scallop Chlamys rubida. In summary, this rose star population was characterized by a relatively stable number of long-lived, slow-growing individuals.
引用
收藏
页码：223 / 230
页数：8
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