A population genetic study of haddock (itMelanogrammus aeglefinus) in northeast Atlantic waters based on isozyme data

Giæver, Marianne; Forthun, Jo

doi:10.1080/00364827.1999.10420436

Cited by 9 publications

(7 citation statements)

References 16 publications

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“…The overall level of genetic variation in Atlantic poor cod (F ST =0·0135; present study) is comparable to that in other gadoid species (cod, F ST =0·021, number of polymorphic loci=10, Mork et al, 1985; haddock, F ST =0·007, number of polymorphic loci=8, Giaever & Forthun, 1999; blue whiting, F ST =0·011, number of polymorphic loci=2, Giaever & Stien, 1998), yet in cod, blue whiting and Atlantic poor cod a significant population structure is apparent.…”

Section: Atlantic and Mediterranean Poor Cod Population Structuresupporting

confidence: 76%

“…Although there is no statistically significant evidence of population differentiation in the Mediterranean, the two Western Mediterranean samples (Gulf of Lions and Tuscan Archipelago) were closer to one another genetically than to the Eastern (Aegean Sea) sample (Aegean Sea-Gulf of Lions D A =0·0170; Aegean Sea-Tuscan Archipelago D A =0·0175). A correlation between genetic and geographic distances has been observed in cod in the Atlantic (Mork et al, 1985) and haddock along the Norwegian coast (Giaever & Forthun, 1999). No such correlation was seen over the range of the Atlantic poor cod, despite the large area covered by the sampling regime (Mantel test, not significant).…”

Section: Atlantic and Mediterranean Poor Cod Population Structurementioning

confidence: 96%

“…Allozyme genetic work on the latter species has shown a relatively low inter-population differentiation. This might be explained by the high mobility of these species leading to increased gene flow (Mork et al, 1985;Giaever & Stien, 1998;Giaever & Stien, 1998;Giaever & Forthun, 1999). Although all of these gadoid species have pelagic egg and larval stages, the sedentary behaviour of post larval poor cod may lead to greater potential for population differentiation.…”

Section: Introductionmentioning

confidence: 99%

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Allozyme analyses of the genus Trisopterus: taxonomic status and population structure of the poor cod

Mattiangelli

Bourke

Ryan³

et al. 2000

Journal of Fish Biology

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Genetic analysis of the four Trisopterus (Gadidae) taxa suggests that the interrelationships of the two morphs of poor cod (T. minutus minutus in the Atlantic and T. minutus capelanus in the Mediterranean) should be reconsidered. The Mediterranean poor cod T. m. capelanus is more closely related to bib T. luscus than to the Atlantic poor cod, so the population structure in the Atlantic and Mediterranean poor cod must be considered separately. Among 635 Atlantic individuals there was some evidence of poor cod population differentiation (allele frequency heterogeneity test Pc0·0005; F ST =0·0135, Pc0·0005). Levels of genetic variation were similar to those reported for related gadoid species. Some differentiation was present on the Norwegian coast (samples from Trondheimsfjord) and between the Faeroe Islands (Faeroe Bank) and the adjacent European coastal location. In contrast no statistically significant population differentiation was evident in Mediterranean poor cod, but fewer samples and individuals were screened. 2000 The Fisheries Society of the British Isles

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Section: Atlantic and Mediterranean Poor Cod Population Structuresupporting

confidence: 76%

Section: Atlantic and Mediterranean Poor Cod Population Structurementioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Allozyme analyses of the genus Trisopterus: taxonomic status and population structure of the poor cod

Mattiangelli

Bourke

Ryan³

et al. 2000

Journal of Fish Biology

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“…Similar marked divergence has been observed in cod (Dahle 1991, Bentzen et al 1996, blue whiting Micromesistius poutassou (Giaever & Stien 1998), haddock Melanogrammus aeglefinus (Giaever & Forthun 1999) and herring Clupea harengus (Shaw et al 1999b) from the Barents Sea. It is also noteworthy that the Barents Sea samples exhibited a significantly lower allelic diversity and heterozygosity than all other samples (mean allelic diversity of 12.4 versus 18.1; mean observed heterozygosity of 0.68 versus 0.8), particularly at locus GMO132 (5 versus 19 alleles), reflecting a trend which has been seen in other microsatellite studies of cod (Dahle 1995, Bentzen et al 1996.…”

Section: Macrogeographic Patternssupporting

confidence: 71%

Marked genetic structuring in localised spawning populations of cod Gadus morhua in the North Sea and adjoining waters, as revealed by microsatellites

Hutchinson¹,

Carvalho²,

Rogers³

2001

Mar. Ecol. Prog. Ser.

177

161

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“…Jamieson and Birley (1989) detected significant differentiation between the north-eastern North Sea/Faroe and the north-western North Sea, as well as between these populations and the Rockall population based on allozyme data. In contrast, Giaever and Forthun (1999) could not find significant differentiation among haddock populations of Norwegian coastal waters and fjords, Iceland, Barents Sea and the North Sea using allozymes. Microsatellite markers have so far only been used in the NW Atlantic (Lage et al 2001), indicating population differentiation between banks (Nantucket Shoals, Grand Banks), whereas only a weak cline along the coast from north to south was detected by using mitochondrial DNA (Zwanenburg et al 1992).…”

Section: Haddockcontrasting

confidence: 63%

Genetic population structure of marine fish: mismatch between biological and fisheries management units

et al. 2009

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Introduction 362Determination of populations and management units 363 Mismatch between management and biological units in the NE Atlantic 371Fisheries management and management units in the NE Atlantic 371Population structure of demersal fish species 372Cod 372Haddock 378Other demersal roundfish species 378Plaice 379Sole 379Other flatfish species 380 AbstractAn essential prerequisite of a sustainable fisheries management is the matching of biologically relevant processes and management action. In fisheries management and assessment, fish stocks are the fundamental biological unit, but the reasoning for the operational management unit is often indistinct and mismatches between the biology and the management action frequently occur. Despite the plethora of population genetic data on marine fishes, to date little or no use is made of the information, despite the fact that the detection of genetic differentiation may indicate reproductively distinct populations. Here, we discuss key aspects of genetic population differentiation in the context of their importance for fisheries management. Furthermore, we evaluate the population structure of all 32 managed marine fish species in the north-east Atlantic and relate this structure to current management units and practice. Although a large number of studies on genetic population structure have been published in the last decades, data are still rare for most exploited species. The mismatch between genetic population structure and the current management units found for six species (Gadus morhua, Melanogrammus aeglefinus, Merlangius merlangus, Micromesistius poutassou, Merluccius merluccius and Clupea harengus), emphasizes the need for a revision of these units and questions the appropriateness of current management measures. The implementation of complex and dynamic population structures into novel and less static management procedures should be a primary task for future fisheries management approaches.

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A population genetic study of haddock (itMelanogrammus aeglefinus) in northeast Atlantic waters based on isozyme data

Cited by 9 publications

References 16 publications

Allozyme analyses of the genus Trisopterus: taxonomic status and population structure of the poor cod

Allozyme analyses of the genus Trisopterus: taxonomic status and population structure of the poor cod

Marked genetic structuring in localised spawning populations of cod Gadus morhua in the North Sea and adjoining waters, as revealed by microsatellites

Genetic population structure of marine fish: mismatch between biological and fisheries management units

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