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Volumn 6, Issue 4, 1996, Pages 1281-1294

Trends in vital rates of the European eel: evidence for density dependence?

Author keywords

Anguilla anguilla; Density dependence; Eel; Fish density decline; Fish population modeling; Fishery management; Life history strategies; Sex ratio; Sexual dimorphism and maturation; Statistics, nonparametric; Survival

Indexed keywords

ANGUILLA ANGUILLA; ANGUILLIFORMES;

EID: 0030421643     PISSN: 10510761     EISSN: None     Source Type: Journal    
DOI: 10.2307/2269607     Document Type: Article
Times cited : (67)

References (72)
  • 1
    • 4243122291 scopus 로고
    • The influence of random fluctuations in stock-recruitment relationships on the economic return from salmon fisheries
    • B. B. Parrish, editor. Fish stocks and recruitment Conseil International pour l'Exploration de la Mér
    • Allen, K. R. 1973. The influence of random fluctuations in stock-recruitment relationships on the economic return from salmon fisheries. Pages 350-359 in B. B. Parrish, editor. Fish stocks and recruitment. Rapports et Procès-Verbaux des Réunions, Conseil International pour l'Exploration de la Mér 164.
    • (1973) Rapports et Procès-Verbaux des Réunions , vol.164 , pp. 350-359
    • Allen, K.R.1
  • 2
    • 0002823595 scopus 로고
    • Long-term trends in patterns of maturity in the southern Benguela (South Atlantic Ocean) pilchard population: Evidence for density-dependence?
    • Armstrong M. J., B. A. Roel, and R. M. Prosch. 1989. Long-term trends in patterns of maturity in the southern Benguela (South Atlantic Ocean) pilchard population: evidence for density-dependence? South African Journal of Marine Science 0(8):91-102.
    • (1989) South African Journal of Marine Science , Issue.8 , pp. 91-102
    • Armstrong, M.J.1    Roel, B.A.2    Prosch, R.M.3
  • 3
    • 0024225665 scopus 로고
    • Bias in estimation of stock-recruit function parameters caused by nonrandom environmental variability
    • Armstrong, M. J., and P. A. Shelton. 1988. Bias in estimation of stock-recruit function parameters caused by nonrandom environmental variability. Canadian Journal of Fisheries and Aquatic Sciences 45:554-557.
    • (1988) Canadian Journal of Fisheries and Aquatic Sciences , vol.45 , pp. 554-557
    • Armstrong, M.J.1    Shelton, P.A.2
  • 4
    • 0026525619 scopus 로고
    • Nonlinear and logistic growth in experimental populations of guppies
    • Barlow J. 1992. Nonlinear and logistic growth in experimental populations of guppies. Ecology 73:941-950.
    • (1992) Ecology , vol.73 , pp. 941-950
    • Barlow, J.1
  • 6
    • 0001150266 scopus 로고
    • Studies in the European eel, Anguilla anguilla (L.). Experimental induction on the male sexual cycle, its relation to temperature and other factors. Meddelel fra Danmarks Fisheri- Og Havsundersøgelser
    • Boëtius, I., and J. Boëtius. 1967. Studies in the European eel, Anguilla anguilla (L.). Experimental induction on the male sexual cycle, its relation to temperature and other factors. Meddelel fra Danmarks Fisheri- og Havsundersøgelser. Nye Serie 3:339-405.
    • (1967) Nye Serie , vol.3 , pp. 339-405
    • Boëtius, I.1    Boëtius, J.2
  • 7
    • 0019234950 scopus 로고
    • Experimental maturation of female silver eels, Anguilla anguilla. Estimates of fecundity and energy reserves for migration and spawning
    • Boëtius, I., and J. Boëtius. 1980. Experimental maturation of female silver eels, Anguilla anguilla. Estimates of fecundity and energy reserves for migration and spawning. Dana 1:1-28.
    • (1980) Dana , vol.1 , pp. 1-28
    • Boëtius, I.1    Boëtius, J.2
  • 10
    • 0006404471 scopus 로고
    • Struttura della popolazione di anguille gialle ed argentine (Anguilla anguilla L.) nelle Valli di Comacchio (Biennio 1989-90)
    • Carried, A., G. Cavallini, I. M. Plazzi, and R. Rossi. 1992. Struttura della popolazione di anguille gialle ed argentine (Anguilla anguilla L.) nelle Valli di Comacchio (Biennio 1989-90). Annali dell'Università di Ferrara 2:1-24.
    • (1992) Annali dell'Università di Ferrara , vol.2 , pp. 1-24
    • Carried, A.1    Cavallini, G.2    Plazzi, I.M.3    Rossi, R.4
  • 11
    • 0342760981 scopus 로고
    • Attuale situazione ecologica delle Valli di Comacchio e proposta per la loro salvaguardia
    • Cognetti, G., C. M. De Angelis, and E. Orlando. 1975. Attuale situazione ecologica delle Valli di Comacchio e proposta per la loro salvaguardia. Quaderni di Italia Nostra 12:1-69.
    • (1975) Quaderni di Italia Nostra , vol.12 , pp. 1-69
    • Cognetti, G.1    De Angelis, C.M.2    Orlando, E.3
  • 12
    • 0006407136 scopus 로고
    • Rassegna delle ricerche condotte nelle Valli da pesca dell'Alto Adriatico
    • Colombo, G. 1972a. Rassegna delle ricerche condotte nelle Valli da pesca dell'Alto Adriatico. Annali dell'Università di Ferrara 1:1-34
    • (1972) Annali dell'Università di Ferrara , vol.1 , pp. 1-34
    • Colombo, G.1
  • 13
    • 0000264403 scopus 로고
    • Primi risultati delle ricerche sulle residue Valli di Comacchio e piani delle ricerche future
    • _. 1972b. Primi risultati delle ricerche sulle residue Valli di Comacchio e piani delle ricerche future. Bollettino Zoologico 39:471-478.
    • (1972) Bollettino Zoologico , vol.39 , pp. 471-478
  • 14
    • 0003021871 scopus 로고
    • Environmental influences of growth and sex ratio in different eel populations (Anguilla anguilla L.) of Adriatic coasts
    • D. S. McLuskey and A. J. Berry, editors. Pergamon, Oxford, England
    • Colombo, G., and R. Rossi. 1978. Environmental influences of growth and sex ratio in different eel populations (Anguilla anguilla L.) of Adriatic coasts. Pages 313-320 in D. S. McLuskey and A. J. Berry, editors. Physiology and behaviour of marine organisms. Pergamon, Oxford, England.
    • (1978) Physiology and Behaviour of Marine Organisms , pp. 313-320
    • Colombo, G.1    Rossi, R.2
  • 16
    • 4243159020 scopus 로고
    • Distribution of the sexes and environmental influence in the European eel (Anguilla anguilla L. (Linnaeus, 1758)): A suggestion to cope with it
    • D'Ancona, U. 1959. Distribution of the sexes and environmental influence in the European eel (Anguilla anguilla L. (Linnaeus, 1758)): a suggestion to cope with it. Aquaculture 9:373-379.
    • (1959) Aquaculture , vol.9 , pp. 373-379
    • D'Ancona, U.1
  • 18
    • 84963105627 scopus 로고
    • Otolith measurement as a method of identifying factors affecting first-year growth and stock separation of mackerel (Scomber scombrus L.)
    • Dawson W. A. 1991, Otolith measurement as a method of identifying factors affecting first-year growth and stock separation of mackerel (Scomber scombrus L.). Journal du Conseil International pour l'Exploration de la Mer 47:303-317
    • (1991) Journal du Conseil International pour l'Exploration de la Mer , vol.47 , pp. 303-317
    • Dawson, W.A.1
  • 19
    • 0001276318 scopus 로고
    • Life tables for natural populations of animals
    • Deevey, E. S. 1947. Life tables for natural populations of animals. Quarterly Review of Biology 22:283-314
    • (1947) Quarterly Review of Biology , vol.22 , pp. 283-314
    • Deevey, E.S.1
  • 20
    • 0029476712 scopus 로고
    • A size and age structured model of the European eel (Anguilla anguilla L.)
    • De Leo, G. A., and M. Gatto. 1995. A size and age structured model of the European eel (Anguilla anguilla L.). Canadian Journal of Fisheries and Aquatic Sciences 52:1351-1367.
    • (1995) Canadian Journal of Fisheries and Aquatic Sciences , vol.52 , pp. 1351-1367
    • De Leo, G.A.1    Gatto, M.2
  • 22
    • 0027487725 scopus 로고
    • Effects of habitat structure on resource availability, diet and growth of benthivorous perch, Perca fluviatilis
    • Diehl, S. 1993. Effects of habitat structure on resource availability, diet and growth of benthivorous perch, Perca fluviatilis. Oikos 67:403-414.
    • (1993) Oikos , vol.67 , pp. 403-414
    • Diehl, S.1
  • 25
    • 0002137488 scopus 로고
    • Notes on the culture of the European eel (Anguilla anguilla, L.) in Japanese eel-farming ponds
    • Conseil International pour l'Exploration de la Mer
    • Egusa, S. 1979. Notes on the culture of the European eel (Anguilla anguilla, L.) in Japanese eel-farming ponds. Rapports et Procès-Verbaux des Réunions, Conseil International pour l'Exploration de la Mer 174:51-58.
    • (1979) Rapports et Procès-Verbaux des Réunions , vol.174 , pp. 51-58
    • Egusa, S.1
  • 27
    • 0024912147 scopus 로고
    • Mechanisms responsible for population regulation in young migratory trout, Salmo trutta: I. the critical time for survival
    • Elliott, J. M. 1989. Mechanisms responsible for population regulation in young migratory trout, Salmo trutta: I. The critical time for survival. Journal of Animal Ecology 58: 987-1002.
    • (1989) Journal of Animal Ecology , vol.58 , pp. 987-1002
    • Elliott, J.M.1
  • 28
    • 0026273767 scopus 로고
    • Recruitment variability and the dynamics of exploited marine populations
    • Fogarty, M. J., M. P. Sissenwine, and E. B. Cohen. 1991. Recruitment variability and the dynamics of exploited marine populations. Trends in Ecology and Evolution 6:241-246
    • (1991) Trends in Ecology and Evolution , vol.6 , pp. 241-246
    • Fogarty, M.J.1    Sissenwine, M.P.2    Cohen, E.B.3
  • 29
    • 0001824854 scopus 로고
    • The age and growth of eels (Anguilla anguilla) from the Windermere catchment area
    • Frost, W. E. 1945. The age and growth of eels (Anguilla anguilla) from the Windermere catchment area. Journal of Animal Ecology 14:26-36.
    • (1945) Journal of Animal Ecology , vol.14 , pp. 26-36
    • Frost, W.E.1
  • 30
    • 84963094706 scopus 로고
    • The eel fisheries of the River Bann, Northern Ireland and observations on the age of silver eels
    • _. 1950. The eel fisheries of the River Bann, Northern Ireland and observations on the age of silver eels. Journal du Conseil International pour l'Exploration de la Mér 16: 358-383.
    • (1950) Journal du Conseil International Pour l'Exploration de la Mér , vol.16 , pp. 358-383
  • 31
    • 0027387656 scopus 로고
    • Diet and annual production of two boreal river fishes following clearcut logging
    • Garman, G. C., and J. R. Moring. 1993. Diet and annual production of two boreal river fishes following clearcut logging. Environmental Biology of Fishes 36:301-311.
    • (1993) Environmental Biology of Fishes , vol.36 , pp. 301-311
    • Garman, G.C.1    Moring, J.R.2
  • 33
    • 0006471345 scopus 로고
    • The management of eels in the Valli di Comacchio lagoons. Oceanologica Acta, N SP
    • (8-14 September 1981). SCOR/ IABO/ UNESCO, Bordeaux, France
    • Gatto, M., E. Laniado, and R. Rossi. 1982. The management of eels in the Valli di Comacchio lagoons. Oceanologica Acta, N SP. Pages 303-307 in Proceedings of the Inter-national Symposium on Coastal Lagoons (8-14 September 1981). SCOR/ IABO/ UNESCO, Bordeaux, France.
    • (1982) Proceedings of the Inter-national Symposium on Coastal Lagoons , pp. 303-307
    • Gatto, M.1    Laniado, E.2    Rossi, R.3
  • 34
    • 0006406131 scopus 로고
    • A method for estimating mortalities and abundances of the Valli di Comacchio eels
    • Supplemento
    • Gatto, M., and R. Rossi. 1979. A method for estimating mortalities and abundances of the Valli di Comacchio eels. Memorie dell'Istituto Italiano di Idrobioiogia, Supplemento 37:107-114.
    • (1979) Memorie dell'Istituto Italiano di Idrobioiogia , vol.37 , pp. 107-114
    • Gatto, M.1    Rossi, R.2
  • 37
    • 0026301193 scopus 로고
    • Density dependence of larval growth of a marine fish, the southern bluefin tuna, Thunnus maccoyii
    • Jenkins, G. P., J. W. Young, and T. L. O. Davis. 1991. Density dependence of larval growth of a marine fish, the southern bluefin tuna, Thunnus maccoyii. Canadian Journal of Fisheries and Aquatic Sciences 48:1358-1363
    • (1991) Canadian Journal of Fisheries and Aquatic Sciences , vol.48 , pp. 1358-1363
    • Jenkins, G.P.1    Young, J.W.2    Davis, T.L.O.3
  • 38
    • 0023468661 scopus 로고
    • Competitive interactions among adults and juveniles in coral reef fish
    • Jones, G. P. 1987. Competitive interactions among adults and juveniles in coral reef fish. Ecology 68:1534-1547.
    • (1987) Ecology , vol.68 , pp. 1534-1547
    • Jones, G.P.1
  • 39
    • 0021551094 scopus 로고
    • Optimal age at sexual maturity of sympatric and experimentally allopatric cutthroat trout and Dolly Varden char
    • Jonsson, B., K. Hindar, and T. G. Northcote. 1984. Optimal age at sexual maturity of sympatric and experimentally allopatric cutthroat trout and Dolly Varden char. Oecologia (Berlin) 61:319-325.
    • (1984) Oecologia (Berlin) , vol.61 , pp. 319-325
    • Jonsson, B.1    Hindar, K.2    Northcote, T.G.3
  • 40
    • 0021555448 scopus 로고
    • Demographic models based on size, not age, for organisms with indeterminate growth
    • Kirkpatrick, M. 1984. Demographic models based on size, not age, for organisms with indeterminate growth. Ecology 65:1874-1884.
    • (1984) Ecology , vol.65 , pp. 1874-1884
    • Kirkpatrick, M.1
  • 41
    • 0025064841 scopus 로고
    • Fat content as a factor regulating migratory behavior in the eel (Anguilla anguilla L.) to the Sargasso Sea
    • Larsson, P., S. Hamrin, and L. Okla. 1990. Fat content as a factor regulating migratory behavior in the eel (Anguilla anguilla L.) to the Sargasso Sea. Naturwissenschaften 77: 448-490.
    • (1990) Naturwissenschaften , vol.77 , pp. 448-490
    • Larsson, P.1    Hamrin, S.2    Okla, L.3
  • 43
    • 0022847702 scopus 로고
    • Estimating uncertainty in population growth rates: Jackknife vs. bootstrap techniques
    • Meyer, J. S., C. G. Ingersoll, L. L. McDonald, and M. Boyce. 1986. Estimating uncertainty in population growth rates: jackknife vs. bootstrap techniques. Ecology 67:1156-1166.
    • (1986) Ecology , vol.67 , pp. 1156-1166
    • Meyer, J.S.1    Ingersoll, C.G.2    McDonald, L.L.3    Boyce, M.4
  • 44
    • 0027884004 scopus 로고
    • A conceptual model for examining density dependence in the growth of stream trout
    • Newman, R. M. 1993. A conceptual model for examining density dependence in the growth of stream trout. Ecology of Freshwater Fish 2:121-131.
    • (1993) Ecology of Freshwater Fish , vol.2 , pp. 121-131
    • Newman, R.M.1
  • 45
    • 0001427557 scopus 로고
    • Relationship between elver recruitment and changes in the sex ratio of silver eels Anguilla anguilla L. migrating from Lough Neagh, Northen Ireland
    • Parsons, J., K. U. Vickers, and N. Y. Warden. 1977. Relationship between elver recruitment and changes in the sex ratio of silver eels Anguilla anguilla L. migrating from Lough Neagh, Northen Ireland. Journal of Fisheries Biology 10:211-229
    • (1977) Journal of Fisheries Biology , vol.10 , pp. 211-229
    • Parsons, J.1    Vickers, K.U.2    Warden, N.Y.3
  • 46
    • 0003693103 scopus 로고
    • Knopf, New York, New York, USA
    • Pearl, R. 1928. The rate of living. Knopf, New York, New York, USA.
    • (1928) The Rate of Living
    • Pearl, R.1
  • 47
    • 0026292826 scopus 로고
    • Assessing the impact of sampling error on model-based management advice: Comparison of equilibrium yield per recruit variance estimators
    • Pelletier, D., and P. Gros. 1991. Assessing the impact of sampling error on model-based management advice: comparison of equilibrium yield per recruit variance estimators. Canadian Journal of Fisheries and Aquatic Sciences 48: 2129-2139.
    • (1991) Canadian Journal of Fisheries and Aquatic Sciences , vol.48 , pp. 2129-2139
    • Pelletier, D.1    Gros, P.2
  • 48
    • 0025588706 scopus 로고
    • Interspecific and intraspecific size class competition affecting resource use and growth of perch, Perca fluviatilis
    • Persson, L., and L. A. Greenberg. 1990. Interspecific and intraspecific size class competition affecting resource use and growth of perch, Perca fluviatilis. Oikos 59:97-106.
    • (1990) Oikos , vol.59 , pp. 97-106
    • Persson, L.1    Greenberg, L.A.2
  • 49
    • 0000809405 scopus 로고
    • The Weibull distribution: A new method of summarizing survivorship data
    • Pinder, J. E., J. G. Wiener, and M. H. Smith. 1978. The Weibull distribution: a new method of summarizing survivorship data. Ecology 59:175-179.
    • (1978) Ecology , vol.59 , pp. 175-179
    • Pinder, J.E.1    Wiener, J.G.2    Smith, M.H.3
  • 53
    • 0001192752 scopus 로고
    • Influence of fish density and relative productivity on growth of Kokanee in ten oligotrophic lakes and reservoirs in Idaho
    • Rieman, B. E., and D. L. Myers. 1992. Influence of fish density and relative productivity on growth of Kokanee in ten oligotrophic lakes and reservoirs in Idaho. Transactions of the American Fisheries Society 121:178-191.
    • (1992) Transactions of the American Fisheries Society , vol.121 , pp. 178-191
    • Rieman, B.E.1    Myers, D.L.2
  • 55
    • 67649218296 scopus 로고
    • An estimate of the production of the eel population in the Valli di Comacchio (Po Delta) during 1974-1976
    • Rossi, R. 1979. An estimate of the production of the eel population in the Valli di Comacchio (Po Delta) during 1974-1976. Bollettino Zoologico 46:217-223.
    • (1979) Bollettino Zoologico , vol.46 , pp. 217-223
    • Rossi, R.1
  • 56
    • 4243127415 scopus 로고
    • Freeze-branding in population assessment of the eel Anguilla anguilla (L.)
    • Rossi, R., A. Carrieri, P. Franzoi, and M. Bianchini. 1986. Freeze-branding in population assessment of the eel Anguilla anguilla (L.). Oebalia 13:15-25.
    • (1986) Oebalia , vol.13 , pp. 15-25
    • Rossi, R.1    Carrieri, A.2    Franzoi, P.3    Bianchini, M.4
  • 58
    • 0000210984 scopus 로고
    • Sex ratio, age and growth of silver eels in two brackish lagoons in the Northern Adriatic
    • Rossi, R., and G. Colombo. 1976a. Sex ratio, age and growth of silver eels in two brackish lagoons in the Northern Adriatic. Archivio di Oceanografia e Limnologia 18:327-341.
    • (1976) Archivio di Oceanografia e Limnologia , vol.18 , pp. 327-341
    • Rossi, R.1    Colombo, G.2
  • 59
    • 4243070025 scopus 로고
    • Some investigations on growth of silver eels of North Adriatic lagoons
    • Rossi, R., and G. Colombo. 1976b. Some investigations on growth of silver eels of North Adriatic lagoons. Bollettino di Pesca, Piscicoltura e Idrobiologia 31:283-289.
    • (1976) Bollettino di Pesca, Piscicoltura e Idrobiologia , vol.31 , pp. 283-289
    • Rossi, R.1    Colombo, G.2
  • 60
    • 0001903339 scopus 로고
    • Some observations on age, sex and growth of silver eels (Anguilla anguilla L.) in Northern Adriatic lagoons
    • Conseil International pour l'Exploration de la Mér
    • Rossi, R., and G. Colombo. 1979. Some observations on age, sex and growth of silver eels (Anguilla anguilla L.) in Northern Adriatic lagoons. Rapports et Procès-Verb aux des Réunions, Conseil International pour l'Exploration de la Mér 174:64-69.
    • (1979) Rapports et Procès-Verb aux des Réunions , vol.174 , pp. 64-69
    • Rossi, R.1    Colombo, G.2
  • 63
    • 0345680522 scopus 로고
    • Eel chromosomes: Cytotaxonomical interrelationship and sex chromosomes
    • Sola, L., G. Gentili, and S. Cataudella. 1980. Eel chromosomes: cytotaxonomical interrelationship and sex chromosomes. Copeia 1980:911-913.
    • (1980) Copeia , vol.1980 , pp. 911-913
    • Sola, L.1    Gentili, G.2    Cataudella, S.3
  • 66
    • 0004778459 scopus 로고
    • Growth and production of female yellow eels, Anguilla anguilla (L.), from brackish water in Norway
    • Vøllestad, L. A. 1986a. Growth and production of female yellow eels, Anguilla anguilla (L.), from brackish water in Norway. Vie Milieu 36:267-271.
    • (1986) Vie Milieu , vol.36 , pp. 267-271
    • Vøllestad, L.A.1
  • 67
    • 84987418675 scopus 로고
    • Temperature-dependent activity of brackish yellow eels, Anguilla anguilla (L.)
    • _. 1986b. Temperature-dependent activity of brackish yellow eels, Anguilla anguilla (L.). Aquaculture and Fishery Management 17:201-205.
    • (1986) Aquaculture and Fishery Management , vol.17 , pp. 201-205
  • 68
    • 0026472422 scopus 로고
    • Geographical variation in age and length at metamorphosis of maturing European eels: Environment effects and phenotypic plasticity
    • _. 1992. Geographical variation in age and length at metamorphosis of maturing European eels: environment effects and phenotypic plasticity. Journal of Animal Ecology 61:41-48.
    • (1992) Journal of Animal Ecology , vol.61 , pp. 41-48
  • 69
    • 0001191888 scopus 로고
    • Life-history characteristics of the European eel Anguilla anguilla in the Imsa River, Norway
    • Vøllestad, L. A., and B. Jonsson. 1986. Life-history characteristics of the European eel Anguilla anguilla in the Imsa River, Norway. Transactions of the American Fisheries Society 115:864-871.
    • (1986) Transactions of the American Fisheries Society , vol.115 , pp. 864-871
    • Vøllestad, L.A.1    Jonsson, B.2
  • 70
    • 0024193583 scopus 로고
    • A 13-year study of the population dynamics and growth of the European eel Anguilla anguilla in a Norwegian river: Evidence for density-dependent mortality, and development of a model for predicting yield
    • Vøllestad, L. A., and B. Jonsson. 1988. A 13-year study of the population dynamics and growth of the European eel Anguilla anguilla in a Norwegian river: evidence for density-dependent mortality, and development of a model for predicting yield. Journal of Animal Ecology 57:983-997.
    • (1988) Journal of Animal Ecology , vol.57 , pp. 983-997
    • Vøllestad, L.A.1    Jonsson, B.2
  • 71
    • 0001382608 scopus 로고
    • Fecundity and gonadal observation of the American eel, Anguilla rostrata, migrating from Chesapeake Bay, Virginia
    • Wenner, C. A., and J. A. Musick. 1974. Fecundity and gonadal observation of the American eel, Anguilla rostrata, migrating from Chesapeake Bay, Virginia. Journal of the Fisheries Research Board of Canada 31:1387-1391.
    • (1974) Journal of the Fisheries Research Board of Canada , vol.31 , pp. 1387-1391
    • Wenner, C.A.1    Musick, J.A.2
  • 72
    • 0021048465 scopus 로고
    • Sex determination in the European eel (Anguilla anguilla L.)
    • Wiberg, U. H. 1983. Sex determination in the European eel (Anguilla anguilla L.). Cytogenetics and Cell Genetics 36: 589-598.
    • (1983) Cytogenetics and Cell Genetics , vol.36 , pp. 589-598
    • Wiberg, U.H.1


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