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Mechanisms of population structuring in giant Australian cuttlefish Sepia apama

Citation

Payne, NL and Snelling, EP and Semmens, JM and Gillanders, BM, Mechanisms of population structuring in giant Australian cuttlefish Sepia apama , Plos One, 8, (3) Article e58694. ISSN 1932-6203 (2013) [Refereed Article]


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Licensed under Creative Commons Attribution 3.0 Unported (CC BY 3.0) http://creativecommons.org/licenses/by/3.0/

DOI: doi:10.1371/journal.pone.0058694

Abstract

While a suite of approaches have been developed to describe the scale, rate and spatial structure of exchange among populations, a lack of mechanistic understanding will invariably compromise predictions of population-level responses to ecosystem modification. In this study, we measured the energetics and sustained swimming capacity of giant Australian cuttlefish Sepia apama and combined these data with information on the life-history strategy, behaviour and circulation patterns experienced by the species to predict scales of connectivity throughout parts of their range. The swimming capacity of adult and juvenile S. apama was poor compared to most other cephalopods, with most individuals incapable of maintaining swimming above 15 cm s-1. Our estimate of optimal swimming speed (6–7 cm s-1) and dispersal potential were consistent with the observed fine-scale population structure of the species. By comparing observed and predicted population connectivity, we identified several mechanisms that are likely to have driven fine-scale population structure in this species, which will assist in the interpretation of future population declines.

Item Details

Item Type:Refereed Article
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Fish Physiology and Genetics
Objective Division:Environment
Objective Group:Ecosystem Assessment and Management
Objective Field:Ecosystem Assessment and Management of Coastal and Estuarine Environments
Author:Semmens, JM (Associate Professor Jayson Semmens)
ID Code:88972
Year Published:2013
Web of Science® Times Cited:1
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2014-02-21
Last Modified:2017-11-01
Downloads:241 View Download Statistics

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