Relative Survival of Hatchery and Wild Trout

Wales, J. H.

doi:10.1577/1548-8659(1954)16[125:rsohaw]2.0.co;2

Cited by 18 publications

(20 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We found significant differences in migration behavior between hatchery and wild steelhead. Differences between the rearing types were not surprising given that other research has shown that hatchery and wild fish differ in their genetics (Chilcote et al 1986;Waples 1991;Reisenbichler and Rubin 1999;Kostow 2004), physiology (Schreck 1981;Zaugg et al 1985;Olla and Davis 1989), behavior (Olla and Davis 1989;Suboski and Templeton 1989;and Berejikian 1995), and survival (Miller 1954;Wales 1954;Vincent 1960;Reisenbichler and McIntyre 1977;Raymond 1988;Collis et al 2001;Ryan et al 2003;Kostow 2004). To date, research has identified rearing type differences among individuals, but our study demonstrates behavioral differences at the population level.…”

Section: Discussionmentioning

confidence: 44%

The Effects of River Impoundment and Hatchery Rearing on the Migration Behavior of Juvenile Steelhead in the Lower Snake River, Washington

Plumb

Perry

Adams

et al. 2006

N American J Fish Manag

View full text Add to dashboard Cite

We used radiotelemetry to monitor the migration behavior of juvenile hatchery and wild steelhead Oncorhynchus mykiss as they migrated through Lower Granite Reservoir and Dam on the lower Snake River, Washington. From 1996 to 2001, we surgically implanted radio transmitters in 1,540 hatchery steelhead and 1,346 wild steelhead. For analysis, we used the inverse Gaussian distribution to describe travel time distributions for cohorts (>50 fish) of juvenile steelhead as they migrated downriver. Mean travel rates were significantly related to reach‐ and discharge‐specific water velocities. Also, mean travel rates near the dam were slower for a given range of water velocities than were mean travel rates through the reservoir, indicating that the presence of the dam caused delay to juvenile steelhead over and above the effect of water velocity. Hatchery steelhead took about twice as long as wild steelhead to pass the dam as a result of the higher proportions of hatchery steelhead traveling upriver from the dam. Because upriver travel and the resulting migration delay might decrease survival, it is possible that hatchery steelhead survive at lower rates than wild steelhead. Our analysis identified a discharge threshold (∼2,400 m3/s) below which travel time and the percentage of fish traveling upriver from the dam increased rapidly, providing support for the use of minimum flow targets to mitigate for fish delay and possibly enhance juvenile steelhead survival.

show abstract

Section: Discussionmentioning

confidence: 44%

The Effects of River Impoundment and Hatchery Rearing on the Migration Behavior of Juvenile Steelhead in the Lower Snake River, Washington

Plumb

Perry

Adams

et al. 2006

N American J Fish Manag

View full text Add to dashboard Cite

show abstract

“…On a world-wide basis around 5 10 9 hatchery reared salmon are released annually but less than 5% survive to adulthood (McNeil, 1991). Studies from around the world have shown that hatchery reared fish have lower survival rates and provide lower returns to anglers than wild fish (Wales, 1954;Heggberget et al, 1992). The difference in mortality levels between hatchery reared and wild fish is especially large if one considers the size or age classes at T II.…”

Section: Introductionmentioning

confidence: 99%

Social learning and life skills training for hatchery reared fish

Brown

Laland

2001

Journal of Fish Biology

349

282

View full text Add to dashboard Cite

With the stress placed on our natural resources, many fisheries increasingly rely on restocking from hatchery-reared sources in an attempt to maintain commercially viable populations. However, the mortality rates of hatchery-reared fishes during the period directly following release are very high. The successful development of restocking programs is consequently dependent upon production and release strategies that lead to improved migratory, antipredator and feeding behaviour in hatchery fish. While relevant individual experience prior to release might improve performance, social learning potentially provides a process whereby fish can acquire locally adaptive behaviour rapidly and efficiently. It is now well over a decade since Suboski & Templeton (1989) raised the possibility of using social learning processes to improve the post-release survival of hatchery-reared fishes. This period has witnessed considerable progress in the understanding of how social learning operates in fish populations. We review new methods and recent findings that suggest how social learning protocols could realistically be applied on a large scale to enhance the viability of hatchery fish prior to their release into the wild. We also suggest a practical pre-release training protocol that may be applied at the hatchery level. 2001 The Fisheries Society of the British Isles

show abstract

“…). Managed predation is also an excellent way to cull maladaptive genotypes during culture, as the survival rate of fish with such genotypes should be lower (Wales ; Suboski and Templeton ). If this is done, the stocking rate and survival will be lower, as will yield; the cost per fish will be greater and fewer fish will be produced, but each fish will be far more valuable ecologically (Table ).…”

Section: Evaluation Metrics Needed For Conservation Aquaculturementioning

confidence: 99%

“…Managed predation is used to produce fish that are not behaviorally naïve (Maynard et al 1998;Berejikian et al 1999Berejikian et al , 2003Laland 2001, 2003;Brown and Day 2002;Olson et al 2012). Managed predation is also an excellent way to cull maladaptive genotypes during culture, as the survival rate of fish with such genotypes should be lower (Wales 1954;Suboski and Templeton 1989). If this is done, the stocking rate and survival will be lower, as will yield; the cost per fish will be greater and fewer fish will be produced, but each fish will be far more valuable ecologically (Table 1).…”

Section: Evaluation Metrics Needed For Conservation Aquaculturementioning

confidence: 99%

Is Good Fish Culture Management Harming Recovery Efforts in Aquaculture‐Assisted Fisheries?

Tave¹,

Hutson²

2019

N American J Aquac

View full text Add to dashboard Cite

To make conservation aquaculture successful, a paradigm shift is needed in what is considered good hatchery management as defined by production aquaculture as well as in the metrics that are used to evaluate hatchery success. In production aquaculture, managers strive to maintain exceptional environmental conditions to maximize yield, the number of fish produced, and survival. However, this type of aquaculture management could decrease the likelihood of success of imperiled species recovery programs due to domestication and epigenetics. Consequently, good management practices in conservation aquaculture should produce conditions that resemble the environment where the fish will be stocked in order to minimize domestication and epigenetic problems that will lower the fitness of wild stocks following augmentation. Changes in what are considered good culture conditions require a new set of hatchery evaluation metrics. The key metric that needs to be altered is the survival rate. Survival is the keystone metric because it determines other metrics such as the number produced, yield, and profits. High survival rates influence domestication, which adversely affects post‐augmentation survival and the fitness of the wild stock. Consequently, lower hatchery survival rates produced by selective pressures in conservation aquaculture are needed to improve success in imperiled species recovery programs. We propose that survival be 10–25% to improve success. Our proposed evaluation metrics for conservation aquaculture are to produce “wild” fish and not lower the fitness of the wild population. We recognize that these recommendations are controversial, but a major goal of this paper is to start a discussion about the most appropriate way to evaluate this type of aquaculture so that recovery efforts for imperiled species can be improved.

show abstract

Relative Survival of Hatchery and Wild Trout

Cited by 18 publications

References 0 publications

The Effects of River Impoundment and Hatchery Rearing on the Migration Behavior of Juvenile Steelhead in the Lower Snake River, Washington

The Effects of River Impoundment and Hatchery Rearing on the Migration Behavior of Juvenile Steelhead in the Lower Snake River, Washington

Social learning and life skills training for hatchery reared fish

Is Good Fish Culture Management Harming Recovery Efforts in Aquaculture‐Assisted Fisheries?

Contact Info

Product

Resources

About