Effects of Walleye Stocking on Year-Class Strength

Li, Jingyin; Cohen, Yosef; Schupp, Dennis H.; Adelman, Ira R.

doi:10.1577/1548-8675(1996)016<0840:eowsoy>2.3.co;2

Cited by 27 publications

(29 citation statements)

References 17 publications

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“…Thus, it is worth asking the question: Does stocking create inland fisheries consistency to meet public desires and demands as suggested conceptually by Figure 4? More recently, Santucci and Wahl (1993) observed low contributions of stocked Walleye Sander vitreus of various sizes to year-class strength, and Li et al (1996) found that Walleye stocking in lakes with poor natural reproduction did not contribute to year-classes significantly. Despite its popularity, stocking has often failed to meet these lofty goals.…”

Section: Immediate Versus Delayed Gratification In Fisheries and Wildmentioning

confidence: 99%

Inland Fisheries Habitat Management: Lessons Learned from Wildlife Ecology and a Proposal for Change

2017

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The habitat concept in inland fisheries has been less studied than wildlife ecology. Since 1950, the cumulative number of publications about “freshwater or inland habitat and fisheries management” has been 60%–95% less than those considering “habitat and wildlife management.” The number of publications about “marine, river, and stream habitat and fisheries management” has also generally exceeded those for “lake habitat and fisheries management.” We provide a perspective comparing inland fish and wildlife habitat management systems and highlight lessons from wildlife ecology that could benefit inland fisheries. We reason that wildlife habitat management has become widespread and accepted because humans share habitats with wildlife and positive/negative responses to habitat restorations/loss are directly observable. We recommend that inland fisheries habitat studies and restorations include opportunities for humans to directly observe the ecological benefits of such practices. To support aquatic habitat management efforts, we suggest that dedicated funding solutions be considered to mitigate aquatic habitat loss. In theory, such a system would provide benefits to inland fish populations that parallel those provided to wildlife through state and federal stamps. Although aquatic habitat conservation and restoration may not solve management issues as rapidly, it will promote long‐term sustainability and resiliency of diverse inland fish populations.

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Section: Immediate Versus Delayed Gratification In Fisheries and Wildmentioning

confidence: 99%

Inland Fisheries Habitat Management: Lessons Learned from Wildlife Ecology and a Proposal for Change

2017

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Section: Introductionmentioning

confidence: 99%

“…However, considerable uncertainty remains regarding the efficacy of different egg and larval collection methods, and the appropriate age of fish to stock. Success of supplementation programmes is typically based on estimates of contributions of stocked fish to older age classes (Li et al 1996) or return to post stocking assessments (Walters et al 1997). However, these methods are not amenable to A. fulvescens as they are not widely subject to harvest and younger age classes are not efficiently captured in surveys using standard sampling methods (Benson et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Hatchery rearing environment and age affect survival and movements of stocked juvenile lake sturgeon

Crossman¹,

Forsythe²,

Scribner³

et al. 2010

Fisheries Management and Ecology

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Considerable uncertainty exists over the relative merits of alternative supplementation strategies for lake sturgeon, Acipenser fulvescens Rafinesque. Numerous supplementation prescriptions have been advocated, largely in the absence of data, focusing on perceived impacts of levels of genetic diversity of progeny collected using different collection methods, and probabilities of survival relative to the size or age of fish released. The hypothesis that collection method, hatchery rearing environment and size/age at the time of release do not influence survival and movements was tested. Acipenser fulvescens gametes and juveniles were collected using three methods and reared in a stream-side hatchery along the natal stream and in a traditional non-natal hatchery environment. Acipenser fulvescens were released into the Upper Black River, Michigan at 8, 13, and 17 weeks of age. Higher rates of recapture were found for juvenile sturgeon reared in the stream-side hatchery than the traditional hatchery for the releases at 8 and 13 weeks. Recapture rates and dispersal distances were significantly greater for fish stocked at 17 weeks than for fish released at earlier ages. Large body size was negatively correlated with timing of movements across all ages indicating that survival may be enhanced by releasing individuals at night. Results indicate that supplementation protocols for A. fulvescens should be developed on a system specific basis and demonstrate the importance of hatchery-rearing environment when fish of younger ages are released. K E Y W O R D S :Acipenser fulvescens, collection methods, dispersal, supplementation.

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“…For example, a growth rate or size-at-age threshold could be used to determine whether management action, such as stocking or fishery closure, is needed to prevent overexploitation. Although the effects of stocking walleye are mixed, such growth thresholds could also forewarn managers before the collapse of a particular stock (Kempinger and Churchill 1972;Li et al 1996aLi et al , 1996b.…”

Section: Introductionmentioning

confidence: 99%

Can growth be used as a surrogate measure of walleye (Sander vitreus) abundance change?

Sass¹,

Kitchell²

2005

Can. J. Fish. Aquat. Sci.

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We examined several models to determine the relative contributions of density-dependent and densityindependent factors on walleye (Sander vitreus) growth in the ceded territory of Wisconsin from 1990 to 1999. We then used independent data from 2000 to determine how well each model predicted walleye growth and examined several models to determine if growth could be used to predict density. Adult density best predicted the mean size of age-3 males (L 3m ) and age-5 females (L 5f ). Density-independent measures of pH, the morphoedaphic index, maximum depth, and conductance had a positive influence on growth, while adult density negatively affected growth. The solely density-dependent models predicted L 3m and L 5f poorly in 2000. The addition of density-independent factors improved model predictions of L 3m and L 5f . Walleye growth did not predict adult walleye densities. Regional patterns in walleye growth were correlated with surrogate measures of lake productivity and to a lesser extent adult density. Density dependence had a relatively weak affect on growth patterns, suggesting that growth cannot be used as a surrogate method for monitoring abundance change.Résumé : Nous avons utilisé plusieurs modèles afin de déterminer les contributions relatives des facteurs liés à la densité et des facteurs indépendants de la densité sur la croissance du doré (Sander vitreus) dans le territoire concédé du Wisconsin de 1990 à 1999. Les données indépendantes de 2000 nous ont ensuite servi à vérifier dans quelle mesure chaque modèle a pu prédire la croissance des dorés. Nous avons aussi analysé plusieurs modèles pour déterminer si la croissance pouvait servir à prédire la densité. La densité des adultes permet de prédire le mieux la taille moyenne des mâles d'âge trois (L 3m ) et des femelles d'âge cinq (L 5f ). Les valeurs du pH, de l'indice morphoédaphique, de la profondeur maximale et de la conductance, toutes indépendantes de la densité, ont un effet positif sur la croissance, alors que la densité des adultes a un effet négatif sur la croissance. Les modèles basés seulement sur les facteurs dépendants de la densité prédisent les valeurs de L 3m et de L 5f de façon imprécise en 2000; l'addition des facteurs indépendants de la densité améliore les prédictions de L 3m et de L 5f des modèles. Il n'est pas possible de prédire la densité des dorés adultes à partir de leur croissance. Les patrons régionaux de croissance des dorés sont en corrélation avec les valeurs de remplacement de la productivité des lacs et, de façon moins marquée, avec la densité des adultes. Les facteurs liés à la densité ont un effet relativement faible sur les patrons de croissance, ce qui laisse croire que la croissance ne peut être utilisée comme méthode de remplacement pour suivre les changements d'abondance. [Traduit par la Rédaction]Sass and Kitchell 2168

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Effects of Walleye Stocking on Year-Class Strength

Cited by 27 publications

References 17 publications

Inland Fisheries Habitat Management: Lessons Learned from Wildlife Ecology and a Proposal for Change

Inland Fisheries Habitat Management: Lessons Learned from Wildlife Ecology and a Proposal for Change

Hatchery rearing environment and age affect survival and movements of stocked juvenile lake sturgeon

Can growth be used as a surrogate measure of walleye (Sander vitreus) abundance change?

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