New view of population genetics of zooplankton: RAD-seq analysis reveals population structure of the North Atlantic planktonic copepodCentropages typicus

2016 ◽  
Vol 25 (7) ◽  
pp. 1566-1580 ◽  
Author(s):  
L. Blanco-Bercial ◽  
A. Bucklin
Keyword(s):  
Population Genetics ◽  
Population Structure ◽  
North Atlantic ◽  
The North ◽  
The North Atlantic ◽  
New View

scholarly journals A review of methods for defining population structure in the harbour porpoise (Phocoena phocoena)

2003 ◽  
Vol 5 ◽  
pp. 41 ◽  
Author(s):  
Christina Lockyer
Keyword(s):  
Population Structure ◽  
North Atlantic ◽  
Ecological Factors ◽  
Harbour Porpoise ◽  
The North ◽  
Contaminant Loads ◽  
Management Measures ◽  
The North Sea ◽  
The North Atlantic ◽  
The Baltic

Wide-ranging methods that have been used to determine population structure, including distribution, life history, biology, ecological factors such as diet and contaminant loads, morphology and genetics, are reviewed. The importance of determining population sub-structure of harbour porpoise throughout the North Atlantic, especially in regions affected by incidental take in fisheries, is discussed in relation to management measures. Some practical proposals are made for integrating diverse information about populations, using the phylogeographic approach, for thepurpose of evaluating the need to manage putative subpopulations separately. Examples focusingon the North and Baltic seas areas are used in this discussion, with some reference to other areas. It is concluded that the existing IWC proposal for 13 populations in the North Atlantic is generally supported, but with some refinement and modification; in particular, allowing sub-divisions in the area through the North Sea to the Baltic.

scholarly journals Genetic structuring in Atlantic haddock contrasts with current management regimes

2020 ◽  
Author(s):  
Paul R Berg ◽  
Per E Jorde ◽  
Kevin A Glover ◽  
Geir Dahle ◽  
John B Taggart ◽  
...  
Keyword(s):  
Population Structure ◽  
North Atlantic ◽  
Isolation By Distance ◽  
Melanogrammus Aeglefinus ◽  
Genetic Structuring ◽  
Current Management ◽  
Northeast Atlantic ◽  
The North ◽  
Management Regime ◽  
The North Atlantic

Abstract The advent of novel genetic methods has made it possible to investigate population structure and connectivity in mobile marine fish species: knowledge of which is essential to ensure a sustainable fishery. Haddock (Melanogrammus aeglefinus) is a highly exploited marine teleost distributed along the coast and continental shelf on both sides of the North Atlantic Ocean. However, little is known about its population structure. Here, we present the first study using single-nucleotide polymorphism (SNP) markers to assess the genetic population structure of haddock at multiple geographic scales, from the trans-Atlantic to the local (fjord) level. Genotyping 138 SNP loci in 1329 individuals from 19 locations across the North Atlantic revealed three main genetic clusters, consisting of a Northwest Atlantic cluster, a Northeast Arctic cluster, and a Northeast Atlantic cluster. We also observed a genetically distinct fjord population and a pattern of isolation by distance in the Northeast Atlantic. Our results contrast with the current management regime for this species in the Northeast Atlantic, as we found structure within some management areas. The study adds to the growing recognition of population structuring in marine organisms in general, and fishes in particular, and is of clear relevance for the management of haddock in the Northeast Atlantic.

The Biology of the Deep-Sea Species of Mysidacea (Crustacea) of the Rockall Trough

1986 ◽  
Vol 66 (4) ◽  
pp. 803-824 ◽  
Author(s):  
J. Mauchline
Keyword(s):  
Population Structure ◽  
Water Column ◽  
Geographical Distribution ◽  
North Atlantic ◽  
Deep Sea ◽  
Depth Range ◽  
The North ◽  
Pelagic Environment ◽  
Rockall Trough ◽  
The North Atlantic

The mysid fauna of the Rockall Trough consists of more than 35 species partitioned between the pelagic water column and the bentho-pelagic environment. The pelagic mysids are dominated by Eucopia grimaldii, E. unguiculata and Boreomysis microps. The benthopelagic mysids, in a transect from 400 to 2900 m depth, are divided into four faunal associations. Pseudomma affine dominates the 400–800 m depth range; the impinging bathypelagic Gnathophausia zoea and the benthopelagic Boreomysis widens dominate the 800–1300 m range;Michthyops parva and Paramblyops rostrata are co-dominants in the 1400–2300 m range; while Amblyopsoides ohlinii dominates the 2170–2965 m range. The benthopelagic mysid fauna is most diverse at depths below 1400 m. It is dominated by species whose geographical distribution is restricted to the North Atlantic, in contrast to the pelagic mysid fauna, which is dominated by cosmopolitan species. Notes on the breeding season, biology and population structure of several species are given.

Population structure of long-finned pilot whales in the North Atlantic: a correlation with sea surface temperature?

2000 ◽  
Vol 9 (7) ◽  
pp. 949-958 ◽  
Author(s):  
K. J. Fullard ◽  
G. Early ◽  
M. P. Heide-Jorgensen ◽  
D. Bloch ◽  
A. Rosing-Asvid ◽  
...  
Keyword(s):  
Population Structure ◽  
Surface Temperature ◽  
Sea Surface Temperature ◽  
North Atlantic ◽  
Sea Surface ◽  
The North ◽  
The North Atlantic ◽  
Pilot Whales

scholarly journals Historical gene flow constraints in a northeastern Atlantic fish: phylogeography of the ballan wrasse Labrus bergylta across its distribution range

2017 ◽  
Vol 4 (2) ◽  
pp. 160773 ◽  
Author(s):  
Frederico Almada ◽  
Sara M. Francisco ◽  
Cristina S. Lima ◽  
Richard FitzGerald ◽  
Luca Mirimin ◽  
...  
Keyword(s):  
Population Structure ◽  
North Atlantic ◽  
Environmental Changes ◽  
Ecological Factors ◽  
Glacial Refugia ◽  
Distribution Range ◽  
The North ◽  
Circulation Patterns ◽  
The North Atlantic ◽  
Labrus Bergylta

The distribution and demographic patterns of marine organisms in the north Atlantic were largely shaped by climatic changes during the Pleistocene, when recurrent glacial maxima forced them to move south or to survive in northern peri-glacial refugia. These patterns were also influenced by biological and ecological factors intrinsic to each species, namely their dispersion ability. The ballan wrasse ( Labrus bergylta ), the largest labrid fish along Europe's continental margins, is a target for fisheries and aquaculture industry. The phylogeographic pattern, population structure, potential glacial refugia and recolonization routes for this species were assessed across its full distribution range, using mitochondrial and nuclear markers. The existence of a marked population structure can reflect both recolonization from three distinct glacial refugia and current and past oceanographic circulation patterns. Although isolated in present times, shared haplotypes between continental and Azores populations and historical exchange of migrants in both directions point to a common origin of L. bergylta . This situation is likely to be maintained and/or accentuated by current circulation patterns in the north Atlantic, and may lead to incipient speciation in the already distinct Azorean population. Future monitoring of this species is crucial to evaluate how this species is coping with current environmental changes.

The population genetics ofCalanus finmarchicusin the North Atlantic

Ophelia ◽  
1996 ◽  
Vol 44 (1-3) ◽  
pp. 29-45 ◽  
Author(s):  
Ann Bucklin ◽  
Rolf C. Sundt ◽  
Geir Dahle
Keyword(s):  
Population Genetics ◽  
North Atlantic ◽  
The North ◽  
The North Atlantic
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