文章基本信息

标题：Jellyfish, Forage Fish, and the World's Major Fisheries
其他标题：English
本地全文：下载
作者：Kelly L. Robinson ; James J. Ruzicka ; Mary Beth Decker 等
期刊名称：Oceanography - Oceanography Society
印刷版ISSN：1042-8275
出版年度：2014
卷号：27
期号：4
页码：104-115
DOI：10.5670/oceanog.2014.90
出版社：Oceanography Society
摘要：A majority of the world’s largest net-based fisheries target planktivorous forage fish that serve as a critical trophic link between the plankton and upper-level consumers such as large predatory fishes, seabirds, and marine mammals. Because the plankton production that drives forage fish also drives jellyfish production, these taxa often overlap in space, time, and diet in coastal ecosystems. This overlap likely leads to predatory and competitive interactions, as jellyfish are effective predators of fish early life stages and zooplankton. The trophic interplay between these groups is made more complex by the harvest of forage fish, which presumably releases jellyfish from competition and is hypothesized to lead to an increase in their production. To understand the role forage fish and jellyfish play as alternate energy transfer pathways in coastal ecosystems, we explore how functional group productivity is altered in three oceanographically distinct ecosystems when jellyfish are abundant and when fish harvest rates are reduced using ecosystem modeling. We propose that ecosystem-based fishery management approaches to forage fish stocks include the use of jellyfish as an independent, empirical “ecosystem health” indicator.