eCite Digital Repository

Latitudinal, ontogenetic, and historical shifts in the diet of a carnivorous teleost, Arripis trutta, in a coastal pelagic ecosystem altered by climate change

Citation

Hughes, JM and Stewart, J and Lyle, JM and McAllister, JD and Stocks, JR and Suthers, IM, Latitudinal, ontogenetic, and historical shifts in the diet of a carnivorous teleost, Arripis trutta, in a coastal pelagic ecosystem altered by climate change, Canadian Journal of Fisheries and Aquatic Sciences, 70, (8) pp. 1209-1230. ISSN 0706-652X (2013) [Refereed Article]


Preview
PDF
Not available
1,011Kb
  

Copyright Statement

Copyright 2013 The Authors

DOI: doi:10.1139/cjfas-2013-0083

Abstract

Changes to the global climate are driving alterations to boundary current-influenced marine ecosystems. The diet of a pelagic teleost, Arripis trutta, was examined in the East Australian Current (EAC)-dominated coastal waters of southeastern (SE) Australia. The diet of A. trutta was dominated by pelagic baitfish, primarily Australian sardine (Sardinops sagax) and scads (Trachurus spp.). Diet varied substantially with both latitude and season linked to variability in the distribution and abundance of key prey species. An ontogenetic diet shift occurred, with crustaceans and polychaetes making up a large proportion of the diet of small fish compared with the dominance of baitfish at larger sizes. The diet of A. trutta has undergone a dramatic shift from one dominated by krill (Nyctiphanes australis) historically to baitfish today. This change is consistent with a well-documented regime shift caused by the increasing intensity of the EAC on coastal SE Australian waters. Understanding the temporal dynamics of this ecosystem is crucial for management of coastal fisheries and also for understanding the impacts of climate change on boundary current-dominated marine ecosystems worldwide.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquatic Ecosystem Studies and Stock Assessment
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Wild Caught
Objective Field:Wild Caught Crustaceans (excl. Rock Lobster and Prawns)
Author:Lyle, JM (Dr Jeremy Lyle)
Author:McAllister, JD (Mr Jaime McAllister)
ID Code:86633
Year Published:2013
Web of Science® Times Cited:5
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2013-10-04
Last Modified:2014-04-14
Downloads:0

Repository Staff Only: item control page