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Identifying shark species responsible for fisheries depredation off Southeast Queensland, Australia

Vardon, J. L., Williams, S. M., Bucher, D. J. and Morgan, J. A. T. (2021) Identifying shark species responsible for fisheries depredation off Southeast Queensland, Australia. Molecular Biology Reports, 48 . pp. 4961-4965. ISSN 1573-4978

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Article Link(s): https://doi.org/10.1007/s11033-021-06460-4

Abstract

Anecdotal reports from fishers in Southeast Queensland, Australia suggest that shark depredation is a significant issue, however little is known about which species are responsible for depredating catches. This research aimed to identify depredating species in Southeast Queensland line based fisheries, by undertaking a genetic analysis of depredated samples collected by commercial, charter and recreational fishers. The genetic analysis successfully identified ten depredating sharks, all from the genus Carcharhinus (19.2% success). The species identified using mitochondrial DNA included five C. leucas (bull sharks), two C. plumbeus (sandbar sharks), one C. amboinensis (pigeye shark), one C. brevipinna (spinner shark) and one unconfirmed C. plumbeus/C. altimus (bignose shark). While many species of Carcharhinus have been found to depredate catches in Australia, C. leucas has not been highlighted until this research as a potential problematic species. The optimised protocol allowed for the confident identification of shark species responsible for depredation in fisheries using frozen fish samples donated by fishers.

Item Type:Article
Business groups:Animal Science
Keywords:Shark depredation Fishery Protocol Species identification Carcharhinus Mitochondrial DNA
Subjects:Aquaculture and Fisheries > Fisheries > Fishery resources
Aquaculture and Fisheries > Fisheries > Fishery management. Fishery policy
Aquaculture and Fisheries > Fisheries > Fishery research
Aquaculture and Fisheries > Fisheries > Fishery for individual species
Deposited On:01 Jul 2021 02:18
Last Modified:03 Sep 2021 16:46

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