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Effects of hooking damage and hook type on post-release survival of sand flathead (Platycephalus bassensis)


Lyle, JM and Moltschaniwskyj, NA and Morton, AJ and Brown, X and Mayer, D, Effects of hooking damage and hook type on post-release survival of sand flathead (Platycephalus bassensis), Marine and Freshwater Research, 58, (5) pp. 445-453. ISSN 1323-1650 (2007) [Refereed Article]

DOI: doi:10.1071/MF06233


This study examined post-release survival in sand flathead (Platycephalus bassensis) and whether there were survival benefits from the use of circle hooks over conventional hook patterns. Anatomical hooking location was the major factor contributing to mortality, with an almost 100% survival rate for fish hooked in the lip, mouth or eye (shallow-hooked) compared with around 64% for fish hooked in the throat or gut (deep-hooked). Mortality in deep-hooked fish was generally associated with injuries to vital organs (gills, heart, liver) and survival was significantly lower if bleeding was associated with injury (54% compared with 85% for non-bleeders). Circle hooks resulted in significantly lower deep-hooking rates (1%) compared with conventional hook types (4-9%) and, based on catch rates, were at least as effective as conventional hook patterns. Estimated survival rates for line-caught sand flathead were high, over 99% for circle hooks and between 94 and 97% for conventional hooks. These findings support the efficacy of management strategies based on size and bag limits and the practice of catch-and-release fishing for sand flathead, as well as a potential conservation benefit from the use of circle hooks. © CSIRO 2007.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Fisheries sciences not elsewhere classified
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - wild caught
Objective Field:Fisheries - recreational freshwater
UTAS Author:Lyle, JM (Associate Professor Jeremy Lyle)
UTAS Author:Moltschaniwskyj, NA (Associate Professor Natalie Moltschaniwskyj)
UTAS Author:Morton, AJ (Mr Alastair Morton)
ID Code:44694
Year Published:2007
Web of Science® Times Cited:19
Deposited By:TAFI - Marine Research Laboratory
Deposited On:2007-08-01
Last Modified:2010-08-17

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