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Article: Examining the effects of authentic C&R on the reproductive potential of Northern pike
Title | Examining the effects of authentic C&R on the reproductive potential of Northern pike |
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Authors | |
Keywords | Angling Migration Recreational fishing Reproduction Stress |
Issue Date | 2021 |
Publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/fishres |
Citation | Fisheries Research, 2021, v. 243, p. article no. 106068 How to Cite? |
Abstract | The practice within recreational fisheries to release captured fish back to the wild, known as catch-and-release (C&R), is an increasingly important strategy to protect fish stocks from overexploitation. However, C&R is a stressor and since animal reproduction is particularly sensitive to stress there is reason to suspect that such a practice induces sublethal fitness consequences. Here, we investigated whether and how C&R fishing influenced the reproductive potential in an anadromous population of Northern pike (Esox lucius). First, female pike were exposed to authentic C&R using rod-and-reel fishing in a coastal foraging habitat prior to the spawning period. Next, we observed the migration to the freshwater spawning habitat and compared both the timing of arrival and maturity stage between C&R-treated and control individuals. Finally, to evaluate effects on the quality and viability of eggs we stripped captured control and recaptured C&R-treated females, measured egg dry mass to assess nutrient content, conducted artificial fertilisations and incubated eggs in a controlled laboratory experiment. We found no evidence of C&R causing alterations in either arrival time, maturity stage, or the quality and viability of fertilised eggs. In combination, our results suggest that long-term effects of C&R-induced stress on key reproductive traits of pike, if any, are minor. |
Description | Hybrid open access |
Persistent Identifier | http://hdl.handle.net/10722/304376 |
ISSN | 2021 Impact Factor: 2.815 2020 SCImago Journal Rankings: 0.925 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Flink, H | - |
dc.contributor.author | Nordahl, O | - |
dc.contributor.author | Hall, M | - |
dc.contributor.author | Raryson, A | - |
dc.contributor.author | Bergström, K | - |
dc.contributor.author | Larsson, P | - |
dc.contributor.author | Petterson, E | - |
dc.contributor.author | Merilae, JM | - |
dc.contributor.author | Tibblin, P | - |
dc.date.accessioned | 2021-09-23T08:59:10Z | - |
dc.date.available | 2021-09-23T08:59:10Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Fisheries Research, 2021, v. 243, p. article no. 106068 | - |
dc.identifier.issn | 0165-7836 | - |
dc.identifier.uri | http://hdl.handle.net/10722/304376 | - |
dc.description | Hybrid open access | - |
dc.description.abstract | The practice within recreational fisheries to release captured fish back to the wild, known as catch-and-release (C&R), is an increasingly important strategy to protect fish stocks from overexploitation. However, C&R is a stressor and since animal reproduction is particularly sensitive to stress there is reason to suspect that such a practice induces sublethal fitness consequences. Here, we investigated whether and how C&R fishing influenced the reproductive potential in an anadromous population of Northern pike (Esox lucius). First, female pike were exposed to authentic C&R using rod-and-reel fishing in a coastal foraging habitat prior to the spawning period. Next, we observed the migration to the freshwater spawning habitat and compared both the timing of arrival and maturity stage between C&R-treated and control individuals. Finally, to evaluate effects on the quality and viability of eggs we stripped captured control and recaptured C&R-treated females, measured egg dry mass to assess nutrient content, conducted artificial fertilisations and incubated eggs in a controlled laboratory experiment. We found no evidence of C&R causing alterations in either arrival time, maturity stage, or the quality and viability of fertilised eggs. In combination, our results suggest that long-term effects of C&R-induced stress on key reproductive traits of pike, if any, are minor. | - |
dc.language | eng | - |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/fishres | - |
dc.relation.ispartof | Fisheries Research | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | Angling | - |
dc.subject | Migration | - |
dc.subject | Recreational fishing | - |
dc.subject | Reproduction | - |
dc.subject | Stress | - |
dc.title | Examining the effects of authentic C&R on the reproductive potential of Northern pike | - |
dc.type | Article | - |
dc.identifier.email | Merilae, JM: merila@hku.hk | - |
dc.identifier.authority | Merilae, JM=rp02753 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1016/j.fishres.2021.106068 | - |
dc.identifier.scopus | eid_2-s2.0-85109759648 | - |
dc.identifier.hkuros | 324969 | - |
dc.identifier.volume | 243 | - |
dc.identifier.spage | article no. 106068 | - |
dc.identifier.epage | article no. 106068 | - |
dc.identifier.isi | WOS:000690429400010 | - |
dc.publisher.place | Netherlands | - |