Northern Range Extension of the Atlantic Mackerel, Scomber scombrus, to Black Island, Labrador

1970 ◽  
Vol 27 (3) ◽  
pp. 610-613 ◽  
Author(s):  
L. S. Parsons
Keyword(s):  
North Atlantic ◽  
Coastal Waters ◽  
Range Extension ◽  
Range Limit ◽  
Atlantic Mackerel ◽  
Scomber Scombrus ◽  
Northern Range Limit

During August 1969, 785 specimens of Scomber scombrus were captured in southern Labrador coastal waters, extending the known range in the western North Atlantic to Black Island, Labrador, more than 50 miles north of Triangle Harbour, the previously authenticated northern range limit.

scholarly journals The genetic composition of feeding aggregations of the Atlantic mackerel (Scomber scombrus) in the central north Atlantic: a microsatellite loci approach

2020 ◽  
Vol 77 (2) ◽  
pp. 604-612
Author(s):  
Davið Gíslason ◽  
Sarah J Helyar ◽  
Guðmundur J Óskarsson ◽  
Guðbjörg Ólafsdóttir ◽  
Aril Slotte ◽  
...  
Keyword(s):  
North Atlantic ◽  
Microsatellite Loci ◽  
Migration Patterns ◽  
Fish Stocks ◽  
North West ◽  
Atlantic Mackerel ◽  
Scomber Scombrus ◽  
The North ◽  
Specific Contribution ◽  
Impacts Of Climate Change

Abstract The impacts of climate change on marine ecosystems can be seen in the changing distribution, migration, and abundance of species in the oceans. For some species this changing environment may be beneficial and can support population expansions. In the northeast Atlantic (NEA), the Atlantic mackerel (Scomber scombrus) is undergoing an increase in stock size accompanied by changing summer migration patterns, which have resulted in an expansion further north and north west than previously recorded. This study uses microsatellite loci to confirm the differentiation among NEA and northwest Atlantic (NWA) mackerel spawning populations and to assess the level of structuring within these populations. In addition, to enable population-specific exploitation rates to be factored into fisheries management, we identified the origin of individuals composing the expanding feeding aggregations in the central north Atlantic (Greenland, Iceland, Faroes), with all aggregations tested originating from spawning populations in the NEA. This study showed that microsatellite loci were useful to assess the contribution of NEA and NWA populations to mixed feeding aggregations across the north Atlantic for large pelagic fish stocks but were not powerful enough to evaluate the specific contribution of known stocks within NEA and NWA.

scholarly journals Temperature constraints shaped the migration routes of mackerel (Scomber scombrus) in the Black Sea

2017 ◽  
Vol 58 (2) ◽  
pp. 337-344 ◽  
Author(s):  
Daniel Pauly ◽  
Çetin Keskin
Keyword(s):  
Black Sea ◽  
North Atlantic ◽  
The Black Sea ◽  
Seasonal Temperature ◽  
Migration Routes ◽  
Atlantic Mackerel ◽  
Scomber Scombrus ◽  
The North ◽  
And Migration ◽  
Induced Changes

Conventional narratives explain fish migrations in term of requirements (food, mates, habitats, etc.), with adequate temperatures being optional. Here, using the example of a (commercially extinct) stock of Black Sea mackerel (Scomber scombrus), we suggest that seasonal migrations are driven by seasonal temperature cycles. Therein, temperature acts as a constraint determining where the fish can be at any given time, and not a one of several factors which they would consider when choosing between alternative migration routes. Generalizing, we suggest that temperature should generally be an explicit part of hypotheses about the migratory behaviours of marine fishes. For illustration of what may occur when this is not the case, it is suggested that the non-consideration of temperature in a model of North Atlantic mackerel migration may have led, among the researchers concerned, to a sense of complacency with respect to the climate change-induced changes in the phenology of this fish in the North Atlantic, whose distribution and migration are misleadingly seen as “stochastic”.

Green Turtles Nesting at Their Northern Range Limit in the United States Represent a Distinct Subpopulation

2018 ◽  
Vol 17 (2) ◽  
pp. 314 ◽  
Author(s):  
Brian M. Shamblin ◽  
Matthew H. Godfrey ◽  
S. Michelle Pate ◽  
William P. Thompson ◽  
Hope Sutton ◽  
...  
Keyword(s):  
United States ◽  
The United States ◽  
Range Limit ◽  
Green Turtles ◽  
Distinct Subpopulation ◽  
Northern Range Limit

Selectivity of square mesh codends of pelagic trawls for Atlantic mackerel (Scomber scombrus L.)

1992 ◽  
Vol 13 (3) ◽  
pp. 267-279 ◽  
Author(s):  
J. Casey ◽  
M.D. Nicholson ◽  
S. Warnes
Keyword(s):  
Atlantic Mackerel ◽  
Scomber Scombrus

Temperature, Salinity and Plankton in the Eastern North Atlantic and Coastal Waters of Britain, 1957.: I. The Characterisation and Distribution of Surface Waters

1963 ◽  
Vol 20 (3) ◽  
pp. 789-826 ◽  
Author(s):  
B. McK. Bary
Keyword(s):  
North Sea ◽  
North Atlantic ◽  
Coastal Waters ◽  
Water Bodies ◽  
English Channel ◽  
Oceanic Water ◽  
Climatic Fluctuations ◽  
The North ◽  
The North Sea ◽  
Eastern North Atlantic

Monthly temperature-salinity diagrams for 1957 have demonstrated that three surface oceanic "water bodies" were consistently present in the eastern North Atlantic; two are regarded as modified North Atlantic Central water which give rise to the third by mixing. As well in the oceanic areas, large and small, high or low salinity patches of water were common. Effects of seasonal climatic fluctuations differed in the several oceanic water bodies. In coastal waters, differences in properties and in seasonal and annual cycles of the properties distinguish the waters from the North Sea, English Channel and the western entrance to the Channel.The geographic distributions of the oceanic waters are consistent with "northern" and "southern" water bodies mixing to form a "transitional" water. Within this distribution there are short-term changes in boundaries and long-term (seasonal) changes in size of the water bodies.Water in the western approaches to the English Channel appeared to be influenced chiefly by the mixed, oceanic transitional water; oceanic influences in the North Sea appear to have been from northern and transitional waters.

Sign in / Sign up

Export Citation Format

Share Document