Stable isotope analysis and fin whale subpopulation structure in the eastern North Atlantic

2015 ◽  
Vol 32 (2) ◽  
pp. 535-551 ◽  
Author(s):  
Morgana Vighi ◽  
Asunción Borrell ◽  
Alex Aguilar
Keyword(s):  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
North Atlantic ◽  
Isotope Analysis ◽  
Fin Whale ◽  
Eastern North Atlantic

scholarly journals Stable isotope analysis of marine feeding signatures of Atlantic salmon in the North Atlantic

2009 ◽  
Vol 67 (1) ◽  
pp. 52-61 ◽  
Author(s):  
J. Brian Dempson ◽  
Victoria A. Braithwaite ◽  
Denis Doherty ◽  
Michael Power
Keyword(s):  
Stable Isotope ◽  
Atlantic Salmon ◽  
Stable Isotope Analysis ◽  
North Atlantic ◽  
C:N Ratio ◽  
Isotope Analysis ◽  
Unknown Origin ◽  
Δ13c And Δ15n ◽  
The North ◽  
The North Atlantic

Abstract Dempson, J. B., Braithwaite, V. A., Doherty, D., and Power, M. 2010. Stable isotope analysis of marine feeding signatures of Atlantic salmon in the North Atlantic. – ICES Journal of Marine Science, 67: 52–61. Differences in the marine feeding of three geographically distinct populations of Atlantic salmon (Salmo salar) in the North Atlantic (Conne River, Newfoundland; Koksoak River, Ungava Bay, Québec; River Erne, northwest Ireland) were examined using analyses of stable isotopes of carbon and nitrogen (δ13C and δ15N) and contrasted with isotope signatures obtained from a sample of salmon of unknown origin captured in the Labrador Sea. Although the overall range of δ13C and δ15N values (δ13C: from −22.42 to −19.37; δ15N: from 10.70 to 13.38) was similar to that reported by others, significant differences were found among populations and between different sea-age life-history groups. Reported differences in marine feeding between populations from the Northeast and Northwest Atlantic corroborated the stable isotope results. A surrogate measure of lipid content, the C:N ratio, was also compared among 1-sea-winter salmon. The highest levels were associated with the Koksoak River, suggesting that Subarctic populations may require higher energy reserves to contend with their longer migrations and more-severe environmental conditions.

scholarly journals Stable Isotope Analysis of Specimens of Opportunity Reveals Ocean-Scale Site Fidelity in an Elusive Whale Species

2021 ◽  
Vol 2 ◽  
Author(s):  
Kerri J. Smith ◽  
Clive N. Trueman ◽  
Christine A. M. France ◽  
Jed P. Sparks ◽  
Andrew C. Brownlow ◽  
...  
Keyword(s):  
Population Structure ◽  
Stable Isotope ◽  
Atlantic Ocean ◽  
Stable Isotope Analysis ◽  
North Atlantic ◽  
Site Fidelity ◽  
North Atlantic Ocean ◽  
Isotope Analysis ◽  
Beaked Whale ◽  
Elusive Species

Elusive wildlife are challenging to study, manage, or conserve, as the difficulty of obtaining specimens or conducting direct observations leads to major data deficiencies. Specimens of opportunity, such as salvaged carcasses or museum specimens, are a valuable source of fundamental biological and ecological information on data-deficient, elusive species, increasing knowledge of biodiversity, habitat and range, and population structure. Stable isotope analysis is a powerful indirect tool that can be used to infer foraging behavior and habitat use retrospectively from archived specimens. Beaked whales are a speciose group of cetaceans that are challenging to study in situ, and although Sowerby's beaked whale (Mesoplodon bidens) was discovered >200 years ago, little is known about its biology. We measured δ13C and δ15N stable isotope composition in bone, muscle, and skin tissue from 102 Sowerby's beaked whale specimens of opportunity collected throughout the North Atlantic Ocean to infer movement ecology and spatial population structure. Median δ13C and δ15N values in Sowerby's beaked whale bone, muscle, and skin tissues significantly differed between whales sampled from the east and west North Atlantic Ocean. Quadratic discriminant analysis that simultaneously considered δ13C and δ15N values correctly assigned >85% of the specimens to their collection region for all tissue types. These findings demonstrate Sowerby's beaked whale exhibits both short- and long-term site fidelity to the region from which the specimens were collected, suggest that this species is composed of two or more populations or exhibits a metapopulation structure, and have implications for conservation and management policy. Stable isotope analysis of specimens of opportunity proved a highly successful means of generating new spatial ecology data for this elusive species and is a method that can be effectively applied to other elusive species.

The ecology of Moroteuthopsis longimana at the sub-Antarctic Prince Edward Islands, as revealed through stable isotope analysis on squid beak prey remains

2020 ◽  
Author(s):  
A van Tonder ◽  
N Lübcker ◽  
M Guerreiro ◽  
JC Xavier ◽  
Y Cherel ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Prince Edward Islands ◽  
Prey Remains

Development of an In-Situ Mass Spectrometer for Stable Isotope Analysis

2003 ◽  
Author(s):  
R. T. Short ◽  
Gottfried P. Kibelka ◽  
Robert H. Byrne ◽  
David Hollander
Keyword(s):  
Stable Isotope ◽  
Mass Spectrometer ◽  
Stable Isotope Analysis ◽  
Isotope Analysis

LATE HOLOCENE HYDROCLIMATE RECONSTRUCTION FROM LAKE CHICHOJ, GUATEMALA USING STABLE ISOTOPE ANALYSIS OF SEDIMENTS

2017 ◽  
Author(s):  
Peter Mortensen ◽  
◽  
Nathan D. Stansell ◽  
Byron A. Steinman ◽  
Gilles Y. Brocard ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Late Holocene ◽  
Isotope Analysis

Exploring the Potential of Electrospray-Orbitrap for Stable Isotope Analysis Using Nitrate as a Model

2021 ◽  
Author(s):  
Andreas Hilkert ◽  
John K. Böhlke ◽  
Stanley J. Mroczkowski ◽  
Kyle L. Fort ◽  
Konstantin Aizikov ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Isotope Analysis

Exploring Diversity in Neolithic Agropastoral Management in Mainland Greece Using Stable Isotope Analysis

2021 ◽  
pp. 1-24
Author(s):  
Petra Vaiglova ◽  
John Coleman ◽  
Charlotte Diffey ◽  
Vasiliki Tzevelekidi ◽  
Melanie Fillios ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Isotope Analysis
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