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Elemental fingerprints of southern calamari (Sepioteuthis australis) reveal local recruitment sources and allow assessment of the importance of closed areas
Citation
Pecl, GT and Tracey, SR and Danyushevsky, L and Wotherspoon, S and Moltschaniwskyj, NA, Elemental fingerprints of southern calamari (Sepioteuthis australis) reveal local recruitment sources and allow assessment of the importance of closed areas, Canadian Journal of Fisheries and Aquatic Sciences, 68, (8) pp. 1351-1360. ISSN 0706-652X (2011) [Refereed Article]
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Copyright Statement
Copyright 2011 NRC Research Press
Abstract
Movement of individuals over a range of temporal and spatial scales is a critical process in determining the structure
and size of populations. For most marine species, a substantial amount of movement that is responsible for connecting
subpopulations occurs when individuals are too small and numerous to be tagged using conventional methods. Using the elemental
fingerprints of the statoliths of the squid Sepioteuthis australis and a robust machine learning classification technique,
this study determined that newly hatched squid had elemental signatures that exhibited sufficient spatial variation to act
as natural tags for natal origin and that elemental signatures can be used to allocate adult squid back to their natal site. Between
55% and 84% of the adult squid caught throughout the east and southeast of Tasmania, Australia, were classified
back to an area that is closed to commercial fishing over much of the peak spawning period, and this was the only location
with substantive evidence of natal recruitment. Although many studies have demonstrated the potential of this approach to
discern connectivity between population units, few studies have successfully done so by then examining the trace element
profiles of adults in addition to those of hatchlings as we have demonstrated with S. australis.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | Southern calamary fish recruitment Tasmania |
| Research Division: | Biological Sciences |
| Research Group: | Ecology |
| Research Field: | Population ecology |
| Objective Division: | Animal Production and Animal Primary Products |
| Objective Group: | Fisheries - wild caught |
| Objective Field: | Wild caught edible molluscs |
| UTAS Author: | Pecl, GT (Professor Gretta Pecl) |
| UTAS Author: | Tracey, SR (Associate Professor Sean Tracey) |
| UTAS Author: | Danyushevsky, L (Professor Leonid Danyushevsky) |
| UTAS Author: | Wotherspoon, S (Dr Simon Wotherspoon) |
| UTAS Author: | Moltschaniwskyj, NA (Associate Professor Natalie Moltschaniwskyj) |
| ID Code: | 74818 |
| Year Published: | 2011 |
| Web of Science® Times Cited: | 14 |
| Deposited By: | Centre for Ore Deposit Research - CODES CoE |
| Deposited On: | 2011-12-14 |
| Last Modified: | 2012-06-20 |
| Downloads: | 1 View Download Statistics |
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