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Paradoxical exploitation of protected fishes as bait for anglers: evaluating the Lamprey bait market in Europe and developing sustainable and ethical solutions.

Foulds WL, Lucas MC - PLoS ONE (2014)

Bottom Line: Although annual catches in the main English lamprey fishery (River Ouse) have varied widely since 1995, catch per unit effort did not decline between 2000 and 2012.This facilitates opportunities to enter into dialogue with anglers over alternative baits to threatened lamprey.The study emphasises the need to inform stakeholders about conservation species subjected to market-driven exploitation.

View Article: PubMed Central - PubMed

Affiliation: School of Biological and Biomedical Sciences, Durham University, Durham, County Durham, United Kingdom.

ABSTRACT
A reoccurring conservation problem is the resolution of consumptive use of threatened wildlife and is especially difficult to defend when it occurs for recreational practices. We explored the commercial capture and supply of threatened European river lamprey (Lampetra fluviatilis) to anglers, to determine the extent of exploitation and seek opportunities for improved conservation. The trade began in 1995 from England, but by 2012 involved sale of lamprey from England, The Netherlands and Estonia, including from protected populations. Lamprey are sold frozen for the capture of predatory fish, mostly in freshwater. In the year 2011/2012 9 tonnes (>90,000 lampreys) of river lamprey were supplied, almost exclusively to British anglers. Although annual catches in the main English lamprey fishery (River Ouse) have varied widely since 1995, catch per unit effort did not decline between 2000 and 2012. Conservation actions since 2011 have included a cap on fishing licenses, catch quotas and restricted fishing seasons. Now, 86% of lamprey bait is imported to Britain. Most bait sellers interviewed would not stock lamprey if they knew they were from threatened populations; many felt their trade would not be impacted if lamprey were not stocked. This facilitates opportunities to enter into dialogue with anglers over alternative baits to threatened lamprey. The study emphasises the need to inform stakeholders about conservation species subjected to market-driven exploitation.

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Related in: MedlinePlus

A scatterplot of mean seasonal CPUE (mean number of lamprey per trap per day) against fishing season for Fisher A’s catch data. There was no significant relationship between variables.
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pone-0099617-g002: A scatterplot of mean seasonal CPUE (mean number of lamprey per trap per day) against fishing season for Fisher A’s catch data. There was no significant relationship between variables.

Mentions: For Fisher A’s catch data between 2000–2012 fishing seasons, when only traps at the same site were used, enabling CPUE to be used as an abundance index, the mean CPUE (weighted by number of traps fished) for each season was calculated (referred to henceforth as mean seasonal CPUE). There was no relationship between mean seasonal CPUE and year (Linear regression, F1,9 = 0.821, P = 0.388, R2 = 0.084; Fig. 2), hence there was no evidence of a trend in abundance change. Given that the lifecycle of river lamprey requires approximately 4–6 years of larval growth and about 1–2 years of adult growth [40], analysis of 2000–2012 fishing seasons covers year classes originating from just before the start of the fishery, and for a subsequent period of 12 years.


Paradoxical exploitation of protected fishes as bait for anglers: evaluating the Lamprey bait market in Europe and developing sustainable and ethical solutions.

Foulds WL, Lucas MC - PLoS ONE (2014)

A scatterplot of mean seasonal CPUE (mean number of lamprey per trap per day) against fishing season for Fisher A’s catch data. There was no significant relationship between variables.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4061017&req=5

pone-0099617-g002: A scatterplot of mean seasonal CPUE (mean number of lamprey per trap per day) against fishing season for Fisher A’s catch data. There was no significant relationship between variables.
Mentions: For Fisher A’s catch data between 2000–2012 fishing seasons, when only traps at the same site were used, enabling CPUE to be used as an abundance index, the mean CPUE (weighted by number of traps fished) for each season was calculated (referred to henceforth as mean seasonal CPUE). There was no relationship between mean seasonal CPUE and year (Linear regression, F1,9 = 0.821, P = 0.388, R2 = 0.084; Fig. 2), hence there was no evidence of a trend in abundance change. Given that the lifecycle of river lamprey requires approximately 4–6 years of larval growth and about 1–2 years of adult growth [40], analysis of 2000–2012 fishing seasons covers year classes originating from just before the start of the fishery, and for a subsequent period of 12 years.

Bottom Line: Although annual catches in the main English lamprey fishery (River Ouse) have varied widely since 1995, catch per unit effort did not decline between 2000 and 2012.This facilitates opportunities to enter into dialogue with anglers over alternative baits to threatened lamprey.The study emphasises the need to inform stakeholders about conservation species subjected to market-driven exploitation.

View Article: PubMed Central - PubMed

Affiliation: School of Biological and Biomedical Sciences, Durham University, Durham, County Durham, United Kingdom.

ABSTRACT
A reoccurring conservation problem is the resolution of consumptive use of threatened wildlife and is especially difficult to defend when it occurs for recreational practices. We explored the commercial capture and supply of threatened European river lamprey (Lampetra fluviatilis) to anglers, to determine the extent of exploitation and seek opportunities for improved conservation. The trade began in 1995 from England, but by 2012 involved sale of lamprey from England, The Netherlands and Estonia, including from protected populations. Lamprey are sold frozen for the capture of predatory fish, mostly in freshwater. In the year 2011/2012 9 tonnes (>90,000 lampreys) of river lamprey were supplied, almost exclusively to British anglers. Although annual catches in the main English lamprey fishery (River Ouse) have varied widely since 1995, catch per unit effort did not decline between 2000 and 2012. Conservation actions since 2011 have included a cap on fishing licenses, catch quotas and restricted fishing seasons. Now, 86% of lamprey bait is imported to Britain. Most bait sellers interviewed would not stock lamprey if they knew they were from threatened populations; many felt their trade would not be impacted if lamprey were not stocked. This facilitates opportunities to enter into dialogue with anglers over alternative baits to threatened lamprey. The study emphasises the need to inform stakeholders about conservation species subjected to market-driven exploitation.

Show MeSH
Related in: MedlinePlus