Whale milk. I. Fin whale (Balaenoptera physalus) and beluga whale (Delphinapterus leucas) milk: gross composition and fatty acid constitution

1969 ◽  
Vol 47 (1) ◽  
pp. 95-97 ◽  
Author(s):  
B. H. Lauer ◽  
B. E. Baker
Keyword(s):  
Fatty Acid ◽  
North Atlantic ◽  
Beluga Whale ◽  
Delphinapterus Leucas ◽  
Hudson Bay ◽  
Balaenoptera Physalus ◽  
Fin Whale ◽  
The North ◽  
The North Atlantic ◽  
Beluga Whale Delphinapterus Leucas

Milk was obtained from a fin whale which was killed in the North Atlantic and from a beluga whale which was killed in Hudson Bay. The gross composition and fatty acid constitution of the milks were determined.

The distribution, cellular structure, and metabolism of adipose tissue in the fin whale, Balaenoptera physalus

1988 ◽  
Vol 66 (2) ◽  
pp. 534-537 ◽  
Author(s):  
Caroline M. Pond ◽  
Christine A. Mattacks
Keyword(s):  
Adipose Tissue ◽  
North Atlantic ◽  
Glucose Utilization ◽  
Significant Activity ◽  
Balaenoptera Physalus ◽  
Tissue Samples ◽  
Fin Whale ◽  
Terrestrial Mammals ◽  
The North ◽  
Adipocyte Volume

The gross mass, mean adipocyte volume, and hexokinase and phosphofructokinase activities of blubber and internal adipose tissue were measured from fin whales (Balaenoptera physalus) caught in the North Atlantic west of Iceland. Fin whale adipocytes are smaller but more numerous than predictions from allometric equations relating adipose tissue structure to body mass, but the deviations are no greater than those of some terrestrial mammals, including humans. Significant activity of the glycolytic enzymes was measured from all adipose tissue samples except those around the eyeball; the activities of hexokinase and phosphofructokinase measured at room temperature are only slightly lower in the blubber than in the internal adipose depots. There was little evidence for metabolic correlates of the site-specific differences in the structure and chemistry of blubber. The highest capacity for glucose utilization was measured in adipose tissue from depots in the neck and the thorax, both of which may contain thermogenic tissue in neonates.

Fatty Acids in Surface Particulate Matter From the North Atlantic

1972 ◽  
Vol 29 (10) ◽  
pp. 1482-1486 ◽  
Author(s):  
David M. Schultz ◽  
James G. Quinn
Keyword(s):  
Particulate Matter ◽  
Fatty Acid ◽  
North Atlantic ◽  
Fatty Acid Distribution ◽  
The North ◽  
Polyunsaturated Acids ◽  
Carbon Acids ◽  
The North Atlantic ◽  
Branched Chain ◽  
Long Chain

The fatty acid composition of particulate matter from surface waters in the North Atlantic has been investigated. A high proportion is long-chain polyunsaturated acids, typical of a marine origin. The low relative abundance of iso and anteiso 15-carbon acids indicates little bacterial contribution to the particulate matter. This fatty acid distribution is in contrast to that found in estuarine particulate matter, which contains only trace amounts of the long-chain polyunsaturated acids and substantial quantities of branched chain acids.

Revision of fin whale Balaenoptera physalus (Linnaeus, 1758) subspecies using genetics

2019 ◽  
Vol 100 (5) ◽  
pp. 1653-1670 ◽  
Author(s):  
Frederick I Archer ◽  
Robert L Brownell ◽  
Brittany L Hancock-Hanser ◽  
Phillip A Morin ◽  
Kelly M Robertson ◽  
...  
Keyword(s):  
North Atlantic ◽  
North Pacific ◽  
Recent Analysis ◽  
Snp Analysis ◽  
Balaenoptera Physalus ◽  
Data Set ◽  
Fin Whale ◽  
The North ◽  
Fin Whales ◽  
The North Pacific

Abstract Three subspecies of fin whales (Balaenoptera physalus) are currently recognized, including the northern fin whale (B. p. physalus), the southern fin whale (B. p. quoyi), and the pygmy fin whale (B. p. patachonica). The Northern Hemisphere subspecies encompasses fin whales in both the North Atlantic and North Pacific oceans. A recent analysis of 154 mitogenome sequences of fin whales from these two ocean basins and the Southern Hemisphere suggested that the North Pacific and North Atlantic populations should be treated as different subspecies. Using these mitogenome sequences, in this study, we conduct analyses on a larger mtDNA control region data set, and on 23 single-nucleotide polymorphisms (SNPs) from 144 of the 154 samples in the mitogenome data set. Our results reveal that North Pacific and North Atlantic fin whales can be correctly assigned to their ocean basin with 99% accuracy. Results of the SNP analysis indicate a correct classification rate of 95%, very low rates of gene flow among ocean basins, and that distinct mitogenome matrilines in the North Pacific are interbreeding. These results indicate that North Pacific fin whales should be recognized as a separate subspecies, with the name B. p. velifera Cope in Scammon 1869 as the oldest available name.

scholarly journals Sensitivity of a Two-Layer Model Atmosphere to Changes in Ice-Sheet Topography

1997 ◽  
Vol 25 ◽  
pp. 246-249 ◽  
Author(s):  
Charles S. Jackson
Keyword(s):  
North Atlantic ◽  
Ice Sheet ◽  
Model Atmosphere ◽  
Hudson Bay ◽  
Surprising Result ◽  
Layer Model ◽  
The North ◽  
Two Layer Model ◽  
The North Atlantic ◽  
Ice Sheet Topography

Results are presented testing the sensitivity of a two-layer model to changes in the Laurentide ice sheet’s geometry following the collapse of the Hudson Bay ice dome. Since the ice sheet is thought to induce cooling over the North Atlantic through its mechanical effect on atmospheric circulation, the model shows a surprising result in that the removal of the Hudson Bay ice dome led to a further cooling of 4°C over the North Atlantic. This finding suggests that fluctuations in ice-sheet topography could have contributed to the climate variability witnessed in the geologic record. Further study is needed to understand the mechanism behind these results.

scholarly journals SERUM CHEMISTRY AND EVIDENCE OF RENAL FAILURE IN THE NORTH ATLANTIC FIN WHALE POPULATION

1986 ◽  
Vol 22 (3) ◽  
pp. 389-396 ◽  
Author(s):  
Richard H. Lambertsen ◽  
Bryndis Birnir ◽  
John E. Bauer
Keyword(s):  
Renal Failure ◽  
North Atlantic ◽  
Serum Chemistry ◽  
Fin Whale ◽  
The North ◽  
The North Atlantic

scholarly journals Can Regulation of Freshwater Runoff in Hudson Bay Affect the Climate of the North Atlantic?

ARCTIC ◽  
1996 ◽  
Vol 49 (4) ◽  
Author(s):  
Paul H. LeBlond ◽  
John R. Lazier ◽  
Andrew J. Weaver
Keyword(s):  
North Atlantic ◽  
Hudson Bay ◽  
Freshwater Runoff ◽  
The North ◽  
The North Atlantic

scholarly journals Stock structure of Sebastes mentella in the North Atlantic revealed by chemometry of the fatty acid profile in heart tissue

2004 ◽  
Vol 61 (1) ◽  
pp. 113-126 ◽  
Author(s):  
Hóraldur Joensen ◽  
Otto Grahl-Nielsen
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Profile ◽  
North Atlantic ◽  
Methyl Esters ◽  
Analytical Data ◽  
Statistical Treatment ◽  
Heart Tissue ◽  
The North ◽  
The North Atlantic ◽  
Sebastes Mentella

Abstract Chemometric analysis of fatty acid profile in the heart tissue of redfish (Sebastes mentella, Travin 1951) from 11 locations in the waters off Norway, Faroe Islands, Iceland, and from two strata at different depths in the Irminger Sea revealed the presence of four separate stocks in the North Atlantic Ocean. The investigation has, statistically, shown: (i) a clear distinction between S. mentella on the Faroe Plateau and S. mentella in the deeps south-west of the Faroe Bank and on the Wyville Thomson Ridge; (ii) a relationship between S. mentella inhabiting the Faroe Plateau and the Norwegian Sea; and (iii) two significantly distinct stocks of S. mentella dwelling on the Icelandic Plateau. The chemometric method, consisting of methanolysis, gas chromatography of the resulting fatty acid methyl esters, and multivariate statistical treatment of the analytical data, has a discriminating power high enough to differentiate at stock level and individual level.

scholarly journals Inuit Knowledge of beluga whale (Delphinapterus leucas) foraging ecology in Nunavik (Arctic Quebec), Canada

2016 ◽  
Vol 94 (10) ◽  
pp. 713-726 ◽  
Author(s):  
K. Breton-Honeyman ◽  
M.O. Hammill ◽  
C.M. Furgal ◽  
B. Hickie
Keyword(s):  
Diet Composition ◽  
Foraging Ecology ◽  
Arctic Region ◽  
Beluga Whale ◽  
The Arctic ◽  
Delphinapterus Leucas ◽  
Hudson Bay ◽  
Productive Area ◽  
Inuit Knowledge ◽  
Beluga Whale Delphinapterus Leucas

The beluga whale (Delphinapterus leucas (Pallas, 1776)) is expected to be influenced by changes in the environment. In Nunavik, the Arctic region of Quebec, Nunavimmiut (Inuit of Nunavik) have depended on beluga for centuries, developing an extensive understanding of the species and its ecology. Forty semidirective interviews were conducted with Inuit hunters and Elders from four Nunavik communities, who had a range of 28–47 years of beluga hunting experience. Interviews followed an ethnocartographic format and were analyzed using a mixed methods approach. Hunters most commonly reported prey species from the sculpin (Cottidae), cod (Gadidae), salmon (Salmonidae), and crustacean families; regional variations in prey and in foraging habitat were found. Hunters identified significant changes in body condition (i.e., blubber thickness), which were associated with observations about the seasonality of feeding. The timing of fat accumulation in the late fall and winter coupled with the understanding that Hudson Bay is not known as a productive area suggest alternate hypotheses to feeding for the seasonal movements exhibited by these whales. Inuit Knowledge of beluga foraging ecology presented here provides information on diet composition and seasonality of energy intake of the beluga and can be an important component of monitoring diet composition for this species into the future. An Inuttitut version of the abstract is available ( Appendix A ).

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