Rapid assessment of the physiological impacts caused by catch-and-release angling on blue-finned mahseer (Tor sp.) of the Cauvery River, India

Authors: Bower, S.D., Danylchuk, A.J., Raghavan, R., Danylchuk, S.C., Pinder, A.C. and Cooke, S.J.

http://eprints.bournemouth.ac.uk/23325/

Journal: Fisheries Management and Ecology

ISSN: 1365-2400

DOI: 10.1111/fme.12135

Forty-nine blue-finned mahseer (Tor sp.; mean total length 458 ± 20 mm) were angled using a range of bait/lure types, angling and air exposure times in water that averaged 27 ± 2 °C over the course of the assessment. No cases of mortality were observed, and rates of moderate and major injury were low, with 91% of mahseer hooked in the mouth. More extreme physiological disturbances (i.e. blood lactate, glucose, pH) in mahseer were associated with longer angling times. Sixteen fish (33%) exhibited at least one form of reflex impairment. Moreover, longer air exposures and angling times resulted in significant likelihood of reflex impairment. Findings suggest that blue-finned mahseer are robust to catch-and-release, but that anglers should avoid unnecessarily long fight times and minimise air exposure to decrease the likelihood of sub-lethal effects that could contribute to post-release mortality.

This data was imported from Scopus:

Authors: Bower, S.D., Danylchuk, A.J., Raghavan, R., Clark-Danylchuk, S.E., Pinder, A.C. and Cooke, S.J.

http://eprints.bournemouth.ac.uk/23325/

Journal: Fisheries Management and Ecology

Volume: 23

Issue: 3-4

Pages: 208-217

eISSN: 1365-2400

ISSN: 0969-997X

DOI: 10.1111/fme.12135

© 2016 John Wiley & Sons Ltd Forty-nine blue-finned mahseer (Tor sp.; mean total length 458 ± 20 mm) were angled using a range of bait/lure types, angling and air exposure times in water that averaged 27 ± 2 °C over the course of the assessment. No cases of mortality were observed, and rates of moderate and major injury were low, with 91% of mahseer hooked in the mouth. More extreme physiological disturbances (i.e. blood lactate, glucose, pH) in mahseer were associated with longer angling times. Sixteen fish (33%) exhibited at least one form of reflex impairment. Moreover, longer air exposures and angling times resulted in significant likelihood of reflex impairment. Findings suggest that blue-finned mahseer are robust to catch-and-release, but that anglers should avoid unnecessarily long fight times and minimise air exposure to decrease the likelihood of sub-lethal effects that could contribute to post-release mortality.

This data was imported from Web of Science (Lite):

Authors: Bower, S.D., Danylchuk, A.J., Raghavan, R., Clark-Danylchuk, S.E., Pinder, A.C. and Cooke, S.J.

http://eprints.bournemouth.ac.uk/23325/

Journal: FISHERIES MANAGEMENT AND ECOLOGY

Volume: 23

Issue: 3-4

Pages: 208-217

eISSN: 1365-2400

ISSN: 0969-997X

DOI: 10.1111/fme.12135

The data on this page was last updated at 05:18 on July 20, 2019.