Occurrence of heavy metals in the blue shark Prionace glauca and selected pelagic in the N. E. Atlantic Ocean

1974 ◽  
Vol 26 (4) ◽  
pp. 287-293 ◽  
Author(s):  
J. D. Stevens ◽  
B. E. Brown
Keyword(s):  
Heavy Metals ◽  
Atlantic Ocean ◽  
Blue Shark ◽  
Prionace Glauca

scholarly journals Reproductive characteristics for the blue shark (Prionace glauca) in the North Atlantic Ocean

2022 ◽  
Vol 120 (1) ◽  
pp. 26-38
Author(s):  
Katie Viducic ◽  
Lisa J. Natanson ◽  
Megan V. Winton ◽  
Austin Humphries
Keyword(s):  
Atlantic Ocean ◽  
North Atlantic ◽  
North Atlantic Ocean ◽  
Blue Shark ◽  
Prionace Glauca ◽  
Reproductive Characteristics ◽  
The North ◽  
The North Atlantic

scholarly journals Reproduction of the Blue Shark Prionace glauca in the South-Western Equatorial Atlantic Ocean

1994 ◽  
Vol 60 (5) ◽  
pp. 487-491 ◽  
Author(s):  
Fabio H. V. Hazin ◽  
Kohei Kihara ◽  
Kazuyuki Otsuka ◽  
Clara E. Boeckman ◽  
Elizabeth C. Leal
Keyword(s):  
Atlantic Ocean ◽  
Equatorial Atlantic ◽  
The South ◽  
Blue Shark ◽  
Prionace Glauca ◽  
Equatorial Atlantic Ocean

scholarly journals Genetic differentiation and phylogeography of Mediterranean-North Eastern Atlantic blue shark (Prionace glauca, L. 1758) using mitochondrial DNA: panmixia or complex stock structure?

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e4112 ◽  
Author(s):  
Agostino Leone ◽  
Ilenia Urso ◽  
Dimitrios Damalas ◽  
Jann Martinsohn ◽  
Antonella Zanzi ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Atlantic Ocean ◽  
Mediterranean Sea ◽  
Spatial Genetic Structure ◽  
Population Expansion ◽  
Phylogeographic Structure ◽  
Blue Shark ◽  
Prionace Glauca ◽  
North Eastern ◽  
The Mediterranean

BackgroundThe blue shark (Prionace glauca, Linnaeus 1758) is one of the most abundant epipelagic shark inhabiting all the oceans except the poles, including the Mediterranean Sea, but its genetic structure has not been confirmed at basin and interoceanic distances. Past tagging programs in the Atlantic Ocean failed to find evidence of migration of blue sharks between the Mediterranean and the adjacent Atlantic, despite the extreme vagility of the species. Although the high rate of by-catch in the Mediterranean basin, to date no genetic study on Mediterranean blue shark was carried out, which constitutes a significant knowledge gap, considering that this population is classified as “Critically Endangered”, unlike its open-ocean counterpart.MethodsBlue shark phylogeography and demography in the Mediterranean Sea and North-Eastern Atlantic Ocean were inferred using two mitochondrial genes (Cytb and control region) amplified from 207 and 170 individuals respectively, collected from six localities across the Mediterranean and two from the North-Eastern Atlantic.ResultsAlthough no obvious pattern of geographical differentiation was apparent from the haplotype network, Φst analyses indicated significant genetic structure among four geographical groups. Demographic analyses suggest that these populations have experienced a constant population expansion in the last 0.4–0.1 million of years.DiscussionThe weak, but significant, differences in Mediterranean and adjacent North-eastern Atlantic blue sharks revealed a complex phylogeographic structure, which appears to reject the assumption of panmixia across the study area, but also supports a certain degree of population connectivity across the Strait of Gibraltar, despite the lack of evidence of migratory movements observed by tagging data. Analyses of spatial genetic structure in relation to sex-ratio and size could indicate some level of sex/stage biased migratory behaviour.

Mercury and selenium in blue shark (Prionace glauca, L. 1758) and swordfish (Xiphias gladius, L. 1758) from two areas of the Atlantic Ocean

2007 ◽  
Vol 150 (3) ◽  
pp. 373-380 ◽  
Author(s):  
Vasco Branco ◽  
Carlos Vale ◽  
João Canário ◽  
Miguel Neves dos Santos
Keyword(s):  
Atlantic Ocean ◽  
Blue Shark ◽  
Prionace Glauca ◽  
Xiphias Gladius

Parasites of the blue shark (Prionace glauca L.), in the North-East Atlantic Ocean

2002 ◽  
Vol 36 (16) ◽  
pp. 1995-2004 ◽  
Author(s):  
A. C. Henderson ◽  
K. Flannery ◽  
J. Dunne
Keyword(s):  
Atlantic Ocean ◽  
East Atlantic ◽  
Blue Shark ◽  
Prionace Glauca ◽  
North East ◽  
The North
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