Growth, production and energy transformations in the salt-marsh killifish Fundulus heteroclitus
Growth, production and energy transformations in the salt-marsh killifish Fundulus heteroclitus
复制标题
盐沼鳉鱼的生长、生产和能量转化
DOI：
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发表时间：
1977
期刊：
影响因子：
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通讯作者：
Suzanne Volkmann
中科院分区：
文献类型：
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作者：
I. Valiela;J. Wright;J. Teal;Suzanne Volkmann
异基底（Fundulus heteroclitus（L.）在新英格兰盐沼中，在生长季节开始时，由3个年龄级组成，其中1年龄级贡献了大部分生物量。生产率的计算表明，年轻的鱼是最活跃的人口的一部分，女性比男性更有生产力。整个种群在生长和新陈代谢中消耗的能量相等。包括今年的年轻人，我们获得了160公斤干重/公顷，天然鱼类种群中获得的最高值的总产量。约5%至15%的产量可供捕食者使用。F. heteroclitus是足够高，以扭转人口的猎物相对频繁。F.因此，异栖螨能够对其猎物的丰度和分布产生重要影响。
Populations of Fundulus heteroclitus (L.) at the beginning of a growth season in a New England salt marsh consist of 3 yearly age classes, with the 1-year-old class contributing most of the biomass. Calculation of production rates revealed that the young fish were the most active part of the population and that females were more productive than males. The entire population spent equal amounts of energy in growth and in metabolism. Including the young of the year, we obtained total production of 160 kg dry weight/ha, a value among the highest obtained for natural fish populations. About 5 to 15% of the production is available to predators. Rates of food consumption by F. heteroclitus are high enough to turn over the population of prey relatively often. Popululations of F. heteroclitus are thus capable of exerting an important influence on the abundance and distribution of their prey.