Population connectivity among migratory and stationary cod Gadus morhua in the Northeast Atlantic-A review of 80 years of study

Marine Ecology Progress Series

Volumn 435, Issue , 2011, Pages 269-283

  Nordeide, Jarle Tryti ^a   Johansen, Steinar D ^a,b   Jørgensen, Tor Erik ^a   Karlsen, Bård Ove ^a,b   Moum, Truls ^a  

^a NORD UNIVERSITY   (Norway)

^b UNIVERSITY OF TROMSØ   (Norway)

Author keywords

Cod; Gadus morhua; NE Atlantic; Non neutral loci; Population genetics; Selection

Indexed keywords

ALLOZYME; COASTAL WATER; CONNECTIVITY; FJORD; GADOID; GENE FLOW; GENETIC DIFFERENTIATION; GENETIC MARKER; GENOMICS; INJURY; LIMITING FACTOR; MIGRATORY SPECIES; MITOCHONDRIAL DNA; OTOLITH; PHENOTYPE; POPULATION STRUCTURE;

ATLANTIC OCEAN; ATLANTIC OCEAN (NORTHEAST);

GADUS MORHUA;

EID: 80051961887     PISSN: 01718630     EISSN: None     Source Type: Journal    
DOI: 10.3354/meps09232     Document Type: Review

References (127)

1. Aglen A (2010) Kan kysttorsk og skrei forvaltes hver for seg? In: Havforskningsrapporten 2010-Kyst og havbruk. Available at: www.imr.no/filarkiv/ kyst-og-havbruk-2009/ 1.8-Kan-kysttorsk-og-skrei-forvaltes-hver-for-seg.pdf
2. Allendorf FW, Hohenlohe PA, Luikart G (2010) Genomics and the future of conservation genetics. Nat Rev Genet 11: 697-709
3. Árnason E (2004) Mitochondrial cytochrome b DNA variation in the high-fecundity Atlantic cod: trans-Atlantic clines and shallow gene genealogy. Genetics 166: 1871-1885. (Pubitemid 38621067)
4. Árnason E, Pálsson S (1996) Mitochondrial cytochrome b DNA sequence variation of Atlantic cod, Gadus morhua, from Norway. Mol Ecol 5: 715-724 (Pubitemid 27099284)
5. Árnason E, Pálsson S, Arason A (1992) Gene flow and lack of population differentiation in Atlantic cod, Gadus morhua L., from Iceland, and a comparison of cod from Norway and Newfoundland. J Fish Biol 40: 751-770. (Pubitemid 23399256)
6. Bazin E, Glémin S, Galtier N (2006) Population size does not influence mitochondrial diversity in animals. Science 312: 570-572.
7. Beebee T, Rowe G (2008) An introduction to molecular ecology. Oxford University Press, Oxford
8. Berg E, Albert OT (2003) Cod in fjords and coastal waters of North Norway: distribution and variation in length and maturity at age. ICES J Mar Sci 60: 787-797 (Pubitemid 36872798)
9. Berg E, Sarvas TH, Fevolden SE, Salberg AB (2005) Accuracy and precision in stock separation of north-east Arctic and Norwegian coastal cod by otoliths - comparing readings, image analyses and a genetic method. Mar Freshw Res 56: 753-762 (Pubitemid 41337450)
10. Bergstad OA, Jørgensen T, Dragesund O (1987) Life history and ecology of the gadoid resources of the Barents Sea. Fish Res 5: 119-161
11. Borisov VM, Ponomarenko VP, Yaragina NA (1999) A critical review of the population status in coastal cod (Gadus morhua) from Barents Sea region of Norway. J Ichthyol 39: 18-28 (Pubitemid 129174711)
12. Brander KM (1979) The relationship between vertebral number and water temperature in cod. J Cons Int Explor Mer 38: 286-292
13. Brander K (1994) Spawning and life history information for North Atlantic cod stocks. In: Brander K (ed) ICES Cooperative Research Report No. 205. ICES, Copenhagen
14. Brander KM (1995) The effect of temperature on growth of Atlantic cod (Gadus morhua L.). ICES J Mar Sci 52: 1-10 (Pubitemid 26447655)
15. Brawn VM (1961a) Aggressive behaviour in the cod (Gadus callariasL.). Behaviour 18: 107-147
16. Brawn VM (1961b) Reproductive behaviour of the cod (Gadus callariasL.). Behaviour 18: 177-198
17. Brawn VM (1961c) Sound production by the cod (Gadus callarias L.). Behaviour 18: 239-255
18. Brix O, Forås E, Strand I (1998) Genetic variation and functional properties of Atlantic cod hemoglobins: introducing a modified tonometric method for studying fragile hemoglobins. Comp Biochem Physiol A 119A: 575-583 (Pubitemid 28161088)
19. Brix O, Thorkildsen S, Colosimo A (2004) Temperature acclimation modulates the oxygen binding properties of the Atlantic cod (Gadus morhua L.) genotypes HbI*1/1, HbI*1/2, and HbI*2/2 by changing the concentrations of their major hemoglobin components (results from growth studies at different temperatures). Comp Biochem Physiol A 138: 241-251 (Pubitemid 38954093)
20. Case RAJ, Hutchinson WF, Hauser L, Van Oosterhout C, Car-valho GR (2005) Macro- and micro-geographic variation in pantophysin (Pan I) allele frequencies in NE Atlantic cod Gadus morhua. Mar Ecol Prog Ser 301: 267-278 (Pubitemid 41613763)
21. Case RAJ, Hutchinson WF, Hauser L, Buehler V and others (2006) Association between growth and Pan I* genotype within Atlantic cod full-sibling families. Trans Am Fish Soc 135: 241-250 (Pubitemid 44478756)
22. Dahle G (1991) Cod, Gadus morhua L., populations identified by mitochondrial DNA. J Fish Biol 38: 295-303
23. Dahle G (1994) Genetic studies of families of Arcto-Norwe-gian and Norwegian coastal cod: preliminary random amplified polymorphic deoxyribonucleic acid studies. ICES Mar Sci Symp 198: 684-687
24. Dahle G, Jørstad KE (1993) Haemoglobin variation in cod- a reliable marker for Arctic cod (Gadus morhua L.). Fish Res 16: 301-311
25. Dannevig A (1956) The influence of temperature on the formation of zones in scales and otoliths of young cod. Fiskeridir Skr Ser Havunders 11: 3-16
26. Engen F, Folstad I (1999) Cod courtship song: A song at the expense of dance? Can J Zool 77: 542-550
27. Fahy WE (1976) The morphological time of fixation of the total number of vertebrae in Fundulus majalis (Walbaum). J Cons Int Explor Mer 36: 243-250
28. Ferguson A (1994) Molecular genetics in fisheries: current and future perspectives. Rev Fish Biol Fish 4: 379-383
29. Fevolden SE, Pogson GH (1995) Differences in nuclear DNA RFLPs between the Norwegian coastal and the Northeast Arctic population of Atlantic cod. In: Skjoldal HR, Hopkins C, Erikstad KE, Leinaas HP (eds) Ecology of fjords and coastal waters. Elsevier Science B.V., Amsterdam
30. Fevolden SE, Pogson GH (1997) Genetic divergence at the synaptophysin (Syp I) locus among Norwegian coastal and north-east Arctic populations of Atlantic cod. J Fish Biol 51: 895-908 (Pubitemid 27503122)
31. Frydenberg O, Møller D, Nævdal G, Sick K (1965) Haemo globin polymorphism in Norwegian cod populations. Hereditas 53: 257-271
32. Fyhn U, Brix O, Nævdal G, Johansen T (1994) New variants of the hemoglobins of Atlantic cod: a tool to discriminate between coastal and arctic cod populations. ICES Mar Sci Symp 198: 666-670
33. Gamperl AK, Busby CD, Hori TSF, Afonso LOB, Hall JR (2009) Hemoglobin genotype has minimal influence on the physiological response of juvenile Atlantic cod (Gadus morhua) to environmental challenges. Physiol Biochem Zool 82: 483-494
34. Godø OR (1995) Transplantation-tagging-experiments in preliminary studies of migration of cod off Norway. ICES J Mar Sci 52: 955-962 (Pubitemid 26464022)
35. Godø OR, Moksness E (1987) Growth and maturation of Norwegian coastal cod and northeast Arctic cod under different conditions. Fish Res 5: 235-242
36. Hardie DC, Gillett RM, Hutchings JA (2006) The effects of isolation and colonization history on the genetic structure of marine-relict populations of Atlantic cod (Gadus morhua) in the Canadian Arctic. Can J Fish Res Aquat Sci 63: 1830-1839 (Pubitemid 44483158)
37. Hohenlohe PA, Bassham S, Etter PD, Stiffler N, Johnson EA, Cresko WA (2010) Population genomics of parallel adaptation in threespine stickleback using sequenced RAD tags. PLoS Genet 6: e1000862
38. Hutchings JA, Bishop TD, McGregor-Shaw CR (1999) Spawning behaviour of Atlantic cod, Gadus morhua: evidence of mate competition and mate choice in a broadcast spawner. Can J Fish Aquat Sci 56: 97-107
39. Hylen A (1964) Coastal cod and skrei in the Lofoten area. Fiskeridir Skr Ser Havunders 13: 27-42
40. Imsland AK, Jonsdottir ODB (2003) Linking population gene tics and growth properties of Atlantic cod. Rev Fish Biol Fish 13: 1-26 (Pubitemid 38005621)
41. Imsland AK, Foss A, Naevdal G, Johansen T, Folkvord A, Ste-fansson SO, Jonassen TM (2004) Variations in growth in haemoglobin genotypes of Atlantic cod. Fish Physiol Biochem 30: 47-55 (Pubitemid 40731463)
42. Jakobsen T (1987) Coastal cod in northern Norway. Fish Res 5: 223-234
43. Johansen S, Guddal PH, Johansen T (1990) Organization of the mitochondrial genome of Atlantic cod Gadus morhua. Nucleic Acids Res 18: 411-419
44. Johansen SD, Coucheron DH, Andreassen M, Karlsen BO and others (2009) Large-scale sequence analyses of Atlantic cod. New Biotechnol 25: 263-271
45. Jonsdottir ODB, Imsland AK, Atladottir OY, Danielsdottir AK (2003) Nuclear DNA RFLP variation of Atlantic cod in the North Atlantic Ocean. Fish Res 63: 429-436 (Pubitemid 36854578)
46. Jørstad KE (ed) (1984) Genetic analyses of cod in northern Norway. In: Dahl E, Danielsen DS, Moksness E, Solemdal P (eds) The propagation of cod (Gadus morhua L). Oluf Rasmussen A/S, Skien, p 745-760
47. Jørstad KE, Nævdal G (1989) Genetic variation and population structure of cod, Gadus morhua L., in some fjords in northern Norway. J Fish Biol 35(Suppl): 245-252
48. Karlsson S, Mork J (2003) Selection-induced variation at the pantophysin locus (Pan I) in a Norwegian fjord population of cod (Gadus morhua L.). Mol Ecol 12: 3265-3274 (Pubitemid 37496689)
49. Karlsson S, Mork J (2005) Deviation from Hardy-Weinberg equilibrium, and temporal instability in allele frequencies at microsatellite loci in a local population of Atlantic cod. ICES J Mar Sci 62: 1588-1596 (Pubitemid 41642618)
50. Karpov LK, Novikov GG (1980) The haemoglobin alloforms in cod, Gadus morhua (Gadiformes, Gadidae), their functional characteristics and occurrence in populations. J Ichthyol 20: 45-49 (translated from Russian)
51. Kjesbu OS (1989) The spawning activity of cod, Gadus morhua L. J Fish Biol 34: 195-206 (Pubitemid 19325764)
52. Lewontin RC, Cockerham CC (1959) The goodness-of-fit for detecting natural selection in random mating populations. Evolution 13: 561-564
53. Løken S, Pedersen T (1996) Effect of parent type and temperature on vertebrae number in juvenile cod, Gadus morhua (L.), in northern Norway. Sarsia 80: 293-298
54. Løken S, Pedersen T, Berg E (1994) Vertebrae numbers as an indicator for the recruitment mechanism of coastal cod of northern Norway. ICES Mar Sci Symp 198: 510-519
55. Lowe WH, Allendorf FW (2010) What can genetics tell us about population connectivity? Mol Ecol 19: 3038-3051
56. Mardis ER (2008a) The impact of next-generation sequencing technology on genetics. Trends Genet 24: 133-141
57. Mardis ER (2008b) Next-generation DNA sequencing meth- ods. Annu Rev Genomics Hum Genet 9: 387-402
58. Marshall HD, Coulson MW, Carr SM (2009) Near neutrality, rate heterogeneity, and linkage govern mitochondrial genome evolution in Atlantic cod (Gadus morhua) and other gadine fish. Mol Biol Evol 26: 576-589
59. Mitrovica JX (2003) Recent controversies in predicting postglacial sea-level change. Quat Sci Rev 22: 127-133 (Pubitemid 36219159)
60. Moen T, Hayes B, Nilsen F, Delghandi M and others (2008) Identification and characterisation of novel SNP markers in Atlantic cod: evidence for directional selection. BMC Genet 9: 18
61. Møller D (1966) Genetic differences between cod groups in the Lofoten area. Nature 212: 824-824
62. Møller D (1968) Genetic diversity in spawning cod along the Norwegian coast. Hereditas 60: 1-32
63. Møller D (1969) The relationship between arctic and coastal cod in their immature stages illustrated by frequencies of genetic characters. Fiskeridir Skr Ser Havunders 15: 220-223
64. Mork J, Giæver M (1999) Genetic structure of cod along the coast of Norway: results from isozyme studies. Sarsia 84: 157-168 (Pubitemid 129332381)
65. Mork J, Sundnes G (1985a) 0-group cod (Gadus morhua) in captivity: different survival of certain genotypes. Helgol Meeresunters 39: 63-70
66. Mork J, Sundnes G (1985b) Haemoglobin polymorphism in Atlantic cod (Gadus morhua): allele frequency variation between year classes in a Norwegian fjord stock. Helgol Meeresunters 39: 55-62
67. Mork J, Giskeødegård R, Sundnes G (1981) LDH gene frequen cies in cod samples from two locations on the Norwegian coast. J Cons Int Explor Mer 39: 110-113
68. Mork J, Giskeødegård R, Sundnes G (1983) Haemoglobin polymorphism in Gadus morhua: genotypic differences in maturing age and within-season gonad maturation. Helgol Meeresunters 36: 313-322
69. Mork J, Giskeødegård R, Sundnes G (1984) Population genetic studies in cod (Gadus mohua L.) by means of the haemoglobin polymorphism; observations in a Norwegian coastal population. Fiskeridir Skr Ser Havunders 17: 449-471
70. Mork J, Ryman N, Ståhl G, Sundnes G (1985) Genetic variation in Atlantic cod (Gadus morhua) throughout its range. Can J Fish Aquat Sci 42: 1580-1587
71. Nævdal G, Folkvord A, Otterlei E, Thorkildsen S (1992) Growth rate related to genotype of 0-group cod at three environmental temperatures. Sarsia 77: 71-73
72. Nielsen R (2005) Molecular signatures of natural selection. Annu Rev Genet 39: 197-218 (Pubitemid 43011113)
73. Nielsen EE, Hansen MM, Meldrup D (2006) Evidence of microsatellite hitch-hiking selection in Atlantic cod (Gadus morhua L.): implications for inferring population structure in nonmodel organisms. Mol Ecol 15: 3219-3229 (Pubitemid 44379728)
74. Nielsen EE, Hemmer-Hansen J, Poulsen N, Loeschcke V and others (2009a) Genomic signatures of local directional selection in a high gene flow marine organism; the Atlantic cod (Gadus morhua). BMC Evol Biol 9: 276
75. Nielsen EE, Hemmer-Hansen J, Larsen PF, Bekkevold D (2009b) Population genomics of marine fishes: identifying adaptive variation in space and time. Mol Ecol 18: 3128-3150
76. Nordeide JT (1998) Coastal cod and north-east Arctic cod- Do they mingle at the spawning grounds in Lofoten? Sarsia 83: 373-379 (Pubitemid 128370640)
77. Nordeide JT, Folstad I (2000) Is cod lekking or a promiscuous group spawner? Fish Fish 1: 90-93
78. Nordeide JT, Kjellsby E (1999) Sound from spawning cod at their spawning grounds. ICES J Mar Sci 56: 326-332 (Pubitemid 29351159)
79. Nordeide JT, Pettersen IH (1998) Haemoglobin frequencies and vertebral numbers of cod (Gadus morhua L.) off northern Norway-test of a population structure hypothesis. ICES J Mar Sci 55: 134-140 (Pubitemid 28226602)
80. O'Leary DB, Coughlan J, Dillane E, McCarthy TV, Cross TF (2007) Microsatellite variation in cod Gadus morhua throughout its geographic range. J Fish Biol 70: 310-335 (Pubitemid 47029857)
81. Otterå H, Jørstad KE, Svåsand T, Kristiansen TS (1999) Migration patterns and recapture rates of North-East Arctic and Norwegian coastal cod reared and released under similar conditions. J Fish Biol 54: 213-217 (Pubitemid 29053789)
82. Otterå H, Agnalt AL, Jørstad KE (2006) Differences in spawning time of captive Atlantic cod from four regions of Norway, kept under identical conditions. ICES J Mar Sci 63: 216-223 (Pubitemid 43265925)
83. Otterlei E, Nyhammer G, Folkvord A, Stefansson SO (1999) Temperature- and size-dependent growth of larval and early juvenile Atlantic cod (Gadus morhua): a comparative study of Norwegian coastal cod and northeast Arctic cod. Can J Fish Aquat Sci 56: 2099-2111 (Pubitemid 30656153)
84. Otterlei E, Folkvord A, Nyhammer G (2002) Temperature dependent otolith growth of larval and early juvenile Atlantic cod (Gadus morhua). ICES J Mar Sci 59: 401-410 (Pubitemid 35235324)
85. Palsbøll PJ, Berube M, Allendorf FW (2007) Identification of management units using population genetic data. Trends Ecol Evol 22: 11-16 (Pubitemid 44959169)
86. Palumbi SR (1994) Genetic divergence, reproductive isolation, and marine speciation. Annu Rev Ecol Syst 25: 547-572 (Pubitemid 24986131)
87. Pampoulie C, Stefansson MÖ, Jörundsdottir TD, Danilowicz BS, Danielsdottir AK (2008) Recolonization history and large-scale dispersal in the open sea: the case study of the North Atlantic cod, Gadus morhua L. Biol J Linn Soc 94: 315-329 (Pubitemid 351776871)
88. Pedersen T (1984) Variation of peak spawning of Arcto-Nor-wegian cod (Gadus morhua L.) during the time period 1929-1982 based on indices estimated from fishery statistics. In: Dahl E, Danielsen DS, Moksness E, Solemdal P (eds) The propagation of cod (Gadus morhua L). Oluf Ras-mussen A/S, Skien, p 301-316
89. Petersen MF, Steffensen JF (2003) Preferred temperature of juvenile Atlantic cod Gadus morhua with different haemoglobin genotypes at normoxia and moderate hypoxia. J Exp Biol 206: 359-364 (Pubitemid 36154303)
90. Pogson GH (2001) Nucleotide polymorphism and natural selection at the pantophysin (Pan I) locus in the Atlantic cod, Gadus morhua (L.). Genetics 157: 317-330 (Pubitemid 32066317)
91. Pogson GH, Fevolden SE (2003) Natural selection and the genetic differentiation of coastal and Arctic populations of the Atlantic cod in northern Norway: a test involving nucleotide sequence variation at the pantophysin (Pan I) locus. Mol Ecol 12: 63-74 (Pubitemid 36108107)
92. Pogson GH, Mesa KA (2004) Positive Darwinian selection at the pantophysin (Pan I) locus in marine gadid fishes. Mol Biol Evol 21: 65-75 (Pubitemid 38233519)
93. Pogson GH, Mesa KA, Boutilier RG (1995) Genetic population-structure and gene flow in the Atlantic cod Gadus-morhua - a comparison of allozyme and nuclear RFLP loci. Genetics 139:375-385
94. Reisegg J, Jørstad KE (1984) Stock structure of cod in the Møre area. In: Dahl E, Danielssen DS, Moksness E, Solemdal P (eds) The propagation of cod Gadus morhua L, Book 2. Oluf Rasmussen AS, Skien, p 609-624
95. Rollefsen G (1933) The otoliths of the cod-preliminary report. Fiskeridir Skr Ser Havunders 4: 1-18
96. Rollefsen G (1934a) The cod otolith as a guide to race, sexual development and mortality. Rapp P-V Reùn Cons Int Explor Mer 88: 1-5
97. Rollefsen G (1934b) Torsken og Fiskehavet 1933. Skreiens alder. Fiskeridir Skr Ser Havunders 4: 12-15
98. Rollefsen G (1954) Observations on the cod and cod fisheries of Lofoten. Rapp P-V Reùn Cons Int Explor Mer 136: 40-47
99. Rowe S, Hutchings JA (2003) Mating systems and the conservation of commercially exploited marine fish. Trends Ecol Evol 18: 567-572 (Pubitemid 37240482)
100. Rowe S, Hutchings JA, Skjæraasen JE, Bezanson L (2008) Morphological and behavioural correlates of reproductive success in Atlantic cod Gadus morhua. Mar Ecol Prog Ser 354: 257-265 (Pubitemid 351327406)
101. Ryman N, Utter F, Laikre L (1995) Protection of intraspecific biodiversity of exploited fishes. Rev Fish Biol Fish 5: 417-446 (Pubitemid 3003810)
102. Salanti G, Amountza G, Ntzani EE, Ioannidis JP (2005) Hardy-Weinberg equilibrium in genetic association studies: an empirical evaluation of reporting, deviations, and power. Eur J Hum Genet 13: 840-848 (Pubitemid 40946083)
103. Salvanes AGV, Skjaeraasen JE, Nilsen T (2004) Sub-populations of coastal cod with different behaviour and life-history strategies. Mar Ecol Prog Ser 267: 241-251 (Pubitemid 38345378)
104. Sarvas TH, Fevolden SE (2005a) Pantophysin (Pan I) locus divergence between inshore v. offshore and northern v. southern populations of Atlantic cod in the northeast Atlantic. J Fish Biol 67: 444-469 (Pubitemid 41615493)
105. Sarvas TH, Fevolden SE (2005b) The scnDNA locus Pan I reveals concurrent presence of different populations of Atlantic cod (Gadus morhua L.) within a single fjord. Fish Res 76: 307-316 (Pubitemid 41454761)
106. Schmidt J (1930) Raceundersøgelser. X. Den atlantiske torsk (Gadus callarias L.) og dens lokale racer. C R Trav Lab Carlsberg 18: 1-72 (in Danish)
107. Skarstein TH, Westgaard JI, Fevolden EE (2007) Comparing microsatellite variation in north-east Atlantic cod (Gadus morhua L.) to genetic structuring as revealed by the pantophysin (Pan I) locus. J Fish Biol 70(Suppl C): 271-290 (Pubitemid 47029862)
108. Skjæraasen JE, Rowe S, Hutchings JA (2006) Sexual dimorphism in pelvic fin length of Atlantic cod. Can J Zool 84: 865-870 (Pubitemid 44605965)
109. Smith PJ, Birley AJ, Jamieson A, Bishop CA (1989) Mitochondrial DNA in the Atlantic cod, Gadus morhua: lack of genetic divergence between eastern and western populations. J Fish Biol 34: 369-373
110. Stransky C, Baumann H, Fevolden SE, Harbitz A and others (2008) Separation of Norwegian coastal cod and Northeast Arctic cod by outer otolith shape analysis. Fish Res 90: 26-35 (Pubitemid 351384736)
111. Sundby S (2000) Recruitment of Atlantic cod stocks in relation to temperature and advection of copepod populations. Sarsia 85: 277-298
112. Sundby S, Nakken O (2008) Spatial shifts in spawning habitats of Arcto-Norwegian cod related to multidecadal climate oscillations and climate change. ICES J Mar Sci 65: 953-962 (Pubitemid 351914195)
113. Suthers IM, van der Meeren T, Jorstad KE (1999) Growth histories derived from otolith microstructure of three Norwegian cod stocks co-reared in mesocosms; effect of initial size and prey size changes. ICES J Mar Sci 56: 658-672
114. Svåsand T, Jørstad KE, Otterå H, Kjesbu OS (1996) Differences in growth performance between Arcto-Norwegian and Norwegian coastal cod reared under identical conditions. J Fish Biol 49: 108-119 (Pubitemid 26311946)
115. Svendsen JI, Alexanderson H, Astakhov VI, Demidov I and others (2004) Late Quaternary ice-sheet history of northern Europe. Quat Sci Rev 23: 1229-1271 (Pubitemid 38722333)
116. Tåning ÅV (1952) Experimental study of meristic characters in fishes. Biol Rev Camb Philos Soc 27: 169-193
117. Templeman W (1981) Vertebral numbers in Atlantic cod, Gadus morhua, of the Newfoundland and adjacent areas, 1947-71, and their use for delineating cod stocks. J Northwest Atl Fish Sci 2: 21-45
118. Templeman W (1983) Stock discrimination in marine fishes. NAFO Sci Coun Stud 6: 57-62
119. van der Meeren T, Jørstad KE (2001) Growth and survival of Arcto-Norwegian and Norwegian coastal cod larvae (Gadus morhua L.) reared together in mesocosms under different light regimes. Aquacult Res 32: 549-563 (Pubitemid 32632105)
120. Van der Meeren T, Jørstad KE, Solemdal P, Kjesbu OS (1994) Growth and survival of cod larvae (Gadus morhua L.): comparative enclosure studies of Northeast Arctic cod and coastal cod from western Norway. ICES Mar Sci Symp 198: 633-645
121. Vollset KW, Seljeset O, Fiksen O, Folkvord A (2009) A common garden experiment with larval Northeast Arctic and Norwegian coastal cod cohorts in replicated mesocosms. Deep-Sea Res 56: 1984-1991
122. Wallace B (1958) The comparison of observed and calculated zygotic distributions. Evolution 12: 113-115
123. Waples RS (1998) Separating the wheat from the chaff: patterns of genetic differentiation in high gene flow species. J Hered 89: 438-450 (Pubitemid 28467644)
124. Waples RS, Gaggiotti O (2006) What is a population? An empirical evaluation of some genetic methods for identifying the number of gene pools and their degree of connectivity. Mol Ecol 15: 1419-1439
125. Wennevik V, Jørstad K, Dahle G, Fevolden SE (2008) Mixed stock analysis and the power of different classes of mole cular markers in discriminating coastal and oceanic Atlantic cod (Gadus morhua L.) on the Lofoten spawning grounds, northern Norway. Hydrobiologia 606: 7-25 (Pubitemid 351533979)
126. Wentzel-Larsen T, Nordeide JT (2001) Testing for homogeneity in sampling from sympatric non-interbreeding populations based on gene frequencies: the case of stationary and migratory cod. Sarsia 86: 229-235 (Pubitemid 33749844)
127. Westgaard JI, Fevolden EE (2007) Atlantic cod (Gadus morhua L.) in inner and outer coastal zones of northern Norway display divergent genetic signature at non-neutral loci. Fish Res 85: 306-315