As global capture fisheries level off or decline, hatchery enhancement of marine species is being undertaken on a large, though poorly documented, worldwide scale. Hatchery enhancement can potentially reduce the genetic diversity of natural stocks because the enormous fecundity of many marine fish and shellfish species enables the swamping of populations with the progeny of a very few adults. Much of the impact of hatchery supplementation on genetic diversity can be predicted from its effects on the effective size of the natural population. A simple mixing model (Ryman and Laikre, 1991) allows calculation of the effective population size of an enhanced population, if the effective sizes of the hatchery and prestocked natural populations and the fraction that each contributes to the mix are known. This model has been applied to a hatchery supplementation program for the endangered Sacramento River winter chinook salmon (Oncorhynchus tshawytscha). This example shows that a reduction in effective population size is not inevitable and that supplementation can increase the effective sizes of small populations. For highly fecund marine species, on the other hand, a severe reduction in effective population size appears to be a more likely result because hatchery populations are generally small and contributions to populations are large. Unfortunately, a paucity of data prevents application of the model to any of the major marine supplementation programs. The precautionary approach to fisheries management suggests slowing the development and implementation of marine enhancement programs until and unless sufficient data are available to evaluate their potential impact on effective population size and genetic diversity.
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References
Allison, G.W., J. Lubchenco, and M.H. Carr. 1998. Marine reserves are necessary but not sufficient for marine conservation. Ecological Applications 8: S79–S92.
Avise, J.C., R.M. Ball, and J. Arnold. 1988. Current versus historical population sizes in vertebrate species with high gene flow: a comparison based on mitochondrial DNA lineages and inbreeding theory for neutral mutations. Molecular Biology and Evolution 5: 331–334.
Banks, M.A., M.S. Blouin, B.A. Baldwin, V.K. Rashbrook, H.A. Fitzgerald, S.M. Blankenship, and D. Hedgecock. 1999. Isolation and inheritance of novel microsatellites in chinook salmon (Oncorhynchus tshawytscha). Journal of Heredity 90: 281–288.
Banks, M.A., V.K. Rashbrook, M.J. Calavetta, C.A. Dean, and D. Hedgecock. 2000. Analysis of microsatellite DNA resolves genetic structure and diversity of chinook salmon (Oncorhynchus tshawytscha) in California's Central Valley. Canadian Journal of Fisheries and Aquatic Sciences 57: 915–927.
Bartley, D.M., M. Bagley, G. Gall, and B. Bentley. 1992. Use of linkage disequilibrium data to estimate effective size of hatchery and natural fish populations. Conservation Biology 6: 365–375.
Bartley, D.M., D.B. Kent, and M.A. Drawbridge. 1995. Conservation genetic diversity in a white seabass hatchery enhancement program in southern California. In: H.L. Schramm, Jr., and R.G. Piper (eds.), Uses and Effects of Cultured Fishes in Aquatic Ecosystems. American Fisheries Society Symposium 15. American Fisheries Society, Bethesda, Maryland, USA. Pp. 249–258.
Botsford, L.W., and J.G. Brittnacher. 1998. Viability of Sacramento River winter-run chinook salmon. Conservation Biology 12: 65–79.
Botsford, L.W., J.C. Castilla, and C.H. Peterson, 1997. The management of fisheries and marine ecosystems. Science 277: 509–515.
Clark, E. 1964. The Oysters of Locmariaquer. Pantheon Books, New York City, New York, USA. 203 pp.
Clutton-Brock, T.H. 1988. Reproductive Success. University of Chicago Press, Chicago, Illinois, USA. 538 pp.
Crow, J.F., and C. Denniston. 1988. Inbreeding and variance effective numbers. Evolution 42: 482–495.
Denny, M.W., and M.F. Shibata. 1989. Consequences of surf-zone turbulence for settlement and external fertilization. American Naturalist 134: 859–889.
Drawbridge, M.A., D.B. Kent, M.A. Shane, and R.F. Ford. 1995. The assessment of marine stock enhancement in southern California: a case study involving the white seabass. In: H.L. Schramm, Jr., and R.G. Piper (eds.), Uses and Effects of Cultured Fishes in Aquatic Ecosystems. American Fisheries Society Symposium 15. American Fisheries Society, Bethesda, Maryland, USA. Pp. 568–569.
FAO (Food and Agriculture Organization of the United Nations). 1997. The State of World Fisheries and Aquaculture, 1996. FAO, Rome, Italy. 129 pp.
Franklin, I.R. 1980. Evolutionary changes in small populations. In: M. Soulé (ed.), Conservation Biology: an Evolutionary Ecological Perspective. Sinauer Associates, Sunderland, Massachusetts, USA. Pp. 135–149.
Fujio, Y., and M. Nakajima. 1989. Genetic monitoring of released population in black rockfish, Sebastes schlegeli. Tohoku Journal of Agricultural Research 40: 19–35.
Fujio, Y., N. Sasaki, M. Sasaki, and A. Koganezawa. 1985. Genetic aspects of natural and released populations of plaice, Paralichthys olivaceus. Bulletin of the Tohoku National Fisheries Research Institute 47: 51–58.
Gabriel, W., M. Lynch, and R. Buerger. 1993. Muller's ratchet and mutational meltdowns. Evolution 47: 1744–1757.
Gaffney, P.M., C.M. Bernat, and S.K. Allen. 1993. Gametic incompatibility in wild and cultured populations of the eastern oyster, Crassostrea virginica (Gmelin). Aquaculture 115: 273–284.
Galtsoff, P.S. 1964. The American Oyster. Fishery Bulletin of the Fish and Wildlife Service 64. 480 pp.
Gilligan, D.M., L.M. Woodworth, M.E. Montgomery, D.A. Briscoe, and R. Frankham. 1997. Is mutation accumulation a threat to the survival of endangered populations? Conservation Biology 11: 1235–1241.
Hastings, A., and L.W. Botsford. 1999. Equivalence in yield from marine reserves and traditional fisheries management. Science 284: 1537–1538.
Hedgecock, D. 1994. Does variance in reproductive success limit effective population size of marine organisms? In: A. Beaumont (ed.), Genetics and Evolution of Aquatic Organisms. Chapman and Hall, London, England. Pp. 122–134.
Hedgecock, D., V. Chow, and R.S. Waples. 1992. Effective population numbers of shellfish brood-stocks estimated from temporal variance in allelic frequencies. Aquaculture 108: 215–232.
Hedrick, P.W., D. Hedgecock, and S. Hamelberg. 1995. Effective population size in winter-run chinook salmon. Conservation Biology 9: 615–624.
Hedrick, P.W., D. Hedgecock, S. Hamelberg, and S.J. Croci. 2000a. The impact of supplementation in winter-run chinook salmon on effective population size. Journal of Heredity 9: 112–116.
Hedrick, P.W., V.K. Rashbrook, and D. Hedgecock. 2000b. Effective population size of winter-run chinook salmon based on microsatellite analysis of returning spawners. Canadian Journal of Fisheries and Aquatic Sciences 57: 2368–2373.
Iglesias, J., and G. Rodriguez-Ojea. 1994. Fitness of hatchery-reared turbot, Scophthalmus maximus L., for survival in the sea: first-year results on feeding, growth and distribution. Aquaculture and Fisheries Management 25, Supplement 1: 179–188.
Jorde, P., and N. Ryman. 1995. Temporal allele frequency change and estimation of effective size in populations with overlapping generations. Genetics 139: 1077–1090.
Kent, D.B., M.A. Drawbridge, and R.F. Ford. 1995. Accomplishments and roadblocks of a marine stock enhancement program for white seabass in California. In: H.L. Schramm, Jr., and R.G. Piper (eds.), Uses and Effects of Cultured Fishes in Aquatic Ecosystems. American Fisheries Society Symposium 15. American Fisheries Society, Bethesda, Maryland, USA. Pp. 492–498.
Kondrashov, A.S. 1995. Contamination of the genome by very slightly deleterious mutations: why have we not died 100 times over? Journal of Theoretical Biology 175: 583–594.
Lande, R. 1995. Mutation and conservation. Conservation Biology 9: 782–791.
Lande, R., and G.F. Barrowclough. 1987. Effective population size genetic variations and their use in population management. In: M.E. Soulé (ed.), Viable Populations for Conservation. Cambridge University Press, New York City, New York, USA. Pp. 87–124.
Lannan, J.E. 1980. Broodstock management of Crassostrea gigas:. I. Genetic variation in survival in the larval rearing system. Aquaculture 21: 323–336.
Leber, K.M., and S.M. Arce. 1996. Stock enhancement in a commercial mullet, Mugil cephalus L., fishery in Hawaii. Fishery Management and Ecology 3: 261–278.
Levitan, D.R., and C.M. Young. 1995. Reproductive success in large populations: empirical measures and theoretical predictions of fertilization in the sea biscuit, Clypeaster rosaceus. Journal of Experimental Marine Biology and Ecology 190: 221–241.
Levitan, D.R., M.A. Sewell, and F.-S. Chia. 1992. How distribution and abundance influence fertilization success in the sea urchin, Strongylocentrotus franciscanus? Ecology 73: 248–254.
Li, G., and D. Hedgecock. 1998. Genetic heterogeneity, detected by PCR-SSCP, among samples of larval Pacific oysters (Crassostrea gigas) supports the hypothesis of large variance in reproductive success. Canadian Journal of Fisheries and Aquatic Sciences 55: 1025–1033.
Luikart, G., and J.-M. Cornuet. 1999. Estimating the effective number of breeders from heterozygote excess in progeny. Genetics 151: 1211–1216.
Masuda, R., and K. Tsukamoto. 1998. Stock enhancement in Japan: review and perspective. Bulletin of Marine Science 62: 337–358.
McEachron, L.W., R.L. Colura, B.W. Bumguardner, and R. Ward. 1998. Survival of stocked red drum in Texas. Bulletin of Marine Science 62: 359–368.
Meffe, G.K. 1992. Techno-arrogance and halfway technologies: salmon hatcheries on the Pacific coast of North America. Conservation Biology 6: 350–354.
Morgan, S.G. 1995. Life and death in the plankton: larval mortality and adaptation. In: L. McEdward (ed.), Ecology of Marine Invertebrate Larvae. CRC Press, Boca Raton, Florida, USA . Pp. 279–321.
Munro, J.L., and J.D. Bell. 1997. Enhancement of marine fisheries resources. Reviews in Fisheries Science 5: 185–222.
National Research Council. 1996. Upstream: Salmon and Society in the Pacific Northwest. Committee on Protection and Management of Pacific Northwest Anadromous Salmonids, National Research Council, Washington, DC, USA. 472 pp.
Naylor, R.L., R.J. Goldburg, J.H. Primavera, N. Kautsky, M.C.M. Beveridge, J. Clay, C. Folke, J. Lubchenco, H. Mooney, and M. Troell. 2000. Effect of aquaculture on world fish supplies. Nature 405: 1017–1024.
Nunney, L. 1996. The influence of variation in female fecundity on effective population size. Biological Journal of the Linnean Society 59: 411–425.
Park, M.S., H.J. Lim, Q. Jo, J.S. Yoo, and M. Jeon. 1999. Assessment of reproductive health in the wild seed oysters, Crassostrea gigas, from two locations in Korea. Journal of Shellfish Research 18: 445–451.
Parrish, R.H., C.S. Nelson, and A. Bakun. 1981. Transport mechanisms and the reproductive success of fishes in the California Current. Biological Oceanography 1: 175–203.
Perez-Enriquez, R., M. Takagi, and N. Taniguchi. 1999. Genetic variability and pedigree tracing of a hatchery-reared stock of red sea bream (Pagrus major) used for stock enhancement, based on microsatellite DNA markers. Aquaculture 173: 413–423.
Peterman, R.M., and M.J. Bradford. 1987. Wind speed and mortality rate of a marine fish, the northern anchovy, Engraulis mordax. Science 235: 354–356.
Pudovkin, A.I., D.V. Zaykin, and D. Hedgecock. 1996. On the potential for estimating the effective number of breeders from heterozygote-excess in progeny. Genetics 144: 383–387.
Richardson, L.R., and J.R. Gold. 1993. Mitochondrial DNA variation in red grouper (Epinephelus morio) and greater amberjack (Seriola dumerili) from the Gulf of Mexico. ICES Journal of Marine Science 50: 53–62.
Ryman, N., and L. Laikre. 1991. Effects of supportive breeding on the genetically effective population size. Conservation Biology 5: 325–329.
Ryman, N., P.E. Jorde, and L. Laikre. 1995. Supportive breeding and variance effective population size. Conservation Biology 9: 1619–1628.
Travis, J., F.C. Coleman, C.B. Grimes, D. Conover, T.M. Bert, and M. Tringali. 1998. Critically assessing stock enhancement: an introduction to the Mote Symposium. Bulletin of Marine Science 62: 305–311.
Tringali, M.D., and T.M. Bert. 1998. Risk to genetic effective population size should be an important consideration in fish stock-enhancement programs. Bulletin of Marine Science 62: 641–659.
Turner, T.F., L.R. Richardson, and J.R. Gold. 1999. Temporal genetic variation of mitochondrial DNA and the female effective population size of red drum (Sciaenops ocellatus) in the northern Gulf of Mexico. Molecular Ecology 8: 1223–1229.
Waples, R.S. 1991. Genetic methods for estimating the effective size of cetacean populations. In: A.R. Hoelzel (ed.), Genetic Ecology of Whales and Dolphins. International Whaling Commission, Special Issue 13, Cambridge, England. Pp. 279–300.
Waples, R.S. 1999. Dispelling some myths about hatcheries. Fisheries 13: 12–21.
Waples, R.S., and C. Do. 1994. Genetic risk associated with supplementation of Pacific salmonids: captive broodstock programs. Canadian Journal of Fisheries and Aquatic Sciences 51: 310–329.
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Hedgecock, D., Coykendall, K. (2007). Genetic Risks of Marine Hatchery Enhancement: The Good, the Bad, and the Unknown. In: Bert, T.M. (eds) Ecological and Genetic Implications of Aquaculture Activities. Methods and Technologies in Fish Biology and Fisheries, vol 6. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-6148-6_5
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