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The dynamics of the summer-spawning population of the loliginid squid (Sepioteuthis australis) in Tasmania, Australia - a conveyor belt of recruits

Citation

Jackson, GD and Pecl, GT, The dynamics of the summer-spawning population of the loliginid squid (Sepioteuthis australis) in Tasmania, Australia - a conveyor belt of recruits, ICES Journal of Marine Science, 60, (2) pp. 290-296. ISSN 1054-3139 (2003) [Refereed Article]

DOI: doi:10.1016/S1054-3139(03)00007-9

Abstract

The population dynamics of the loliginid squid Sepioteuthis australis was examined on a fine temporal scale during a 2-month period of rising sea-surface temperatures on the summer inshore spawning grounds of Coles Bay, Tasmania, Australia. Samples were taken regularly (generally weekly) to discern any short-term population changes in age, growth or reproductive parameters. There was no change in the mean age, mantle length or weight of males or females through the study period (November and December 1996). This indicated that instead of following one or a few discrete cohorts of spawning individuals, there were continuous waves of new individuals moving onto the spawning beds, which may be best described by a conveyer belt of new recruits. There was an abrupt and significant difference in the mean oviduct egg size in females caught between November and December but the factors responsible for this remain unknown. Few squid showed evidence of recent feeding, suggesting that they move off the spawning grounds to feed. © 2003 International Council for the Exploration of the Sea. Published by Elsevier Science Ltd. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Population Ecology
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Environmental Sciences
Author:Jackson, GD (Dr George Jackson)
Author:Pecl, GT (Associate Professor Gretta Pecl)
ID Code:28565
Year Published:2003
Web of Science® Times Cited:17
Deposited By:TAFI - Marine Research Laboratory
Deposited On:2003-08-01
Last Modified:2004-06-21
Downloads:0

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