Charles Darwin University

CDU eSpace
Institutional Repository

 
CDU Staff and Student only
 

Assessment of stocking effectiveness for Murray cod (Maccullochella peelii ) and golden perch (Macquaria ambigua) in rivers and impoundments of south-eastern Australia

Forbes, Jamin, Watts, Robyn J., Robinson, Wayne A., Baumgartner, Lee J., McGuffie, Prue, Cameron, Leo M. and Crook, David A. (2016). Assessment of stocking effectiveness for Murray cod (Maccullochella peelii ) and golden perch (Macquaria ambigua) in rivers and impoundments of south-eastern Australia. Marine and Freshwater Research,67(10):1410-1419.

Document type: Journal Article
Citation counts: Altmetric Score Altmetric Score is 4
Google Scholar Search Google Scholar

IRMA ID 84376995xPUB287
Title Assessment of stocking effectiveness for Murray cod (Maccullochella peelii ) and golden perch (Macquaria ambigua) in rivers and impoundments of south-eastern Australia
Author Forbes, Jamin
Watts, Robyn J.
Robinson, Wayne A.
Baumgartner, Lee J.
McGuffie, Prue
Cameron, Leo M.
Crook, David A.
Journal Name Marine and Freshwater Research
Publication Date 2016
Volume Number 67
Issue Number 10
ISSN 1323-1650   (check CDU catalogue  open catalogue search in new window)
Start Page 1410
End Page 1419
Total Pages 10
Place of Publication Australia
Publisher C S I R O Publishing
Field of Research 0704 - Fisheries Sciences
HERDC Category C1 - Journal Article (DIISR)
Abstract Stock enhancement is a management tool used for fishery recovery worldwide, yet the success of many stocking programs remains unquantified. Murray cod (Maccullochella peelii) and golden perch (Macquaria ambigua) are important Australian recreational target species that have experienced widespread decline. Stocking of these species has been undertaken for decades, with limited assessment of effectiveness. A batch marking and recapture approach was applied to assess stocked Murray cod and golden perch survival, contributions to wild fisheries, and condition in rivers and impoundments. Stocked fish were marked with calcein. Marked fish were detected during surveys undertaken 3 years and 10 months from initial marking, and it is probable that marks will persist beyond this time. The proportion of calcein marked fish in the population sub-sample whose age was equal to, or less than, the number of years since release, varied by 7–94% for Murray cod, and 9–98% for golden perch. Higher proportions of marked fish were found in impoundments than rivers. Marked Murray cod had significantly steeper length–weight relationships (i.e. higher weight at a given length) to unmarked fish. Our results show that application of methods for discriminating stocked and wild fish provides critical information for the development of adaptive, location-specific stocking strategies.
Keywords calcein
fish stocking
mark retention
otoliths
population enhancement
species decline
DOI http://dx.doi.org/10.1071/MF15230   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
Versions
Version Filter Type
Access Statistics: 7 Abstract Views  -  Detailed Statistics
Created: Tue, 26 Jul 2016, 12:59:29 CST