Navigation Links
Alaska seal pup diet may hold key to decline of population

Female harbor seal pups whose blubber falls below average levels may be at higher risk of delayed sexual maturation or death, even if they get enough fat in their diets later on, according to a new study sponsored by The American Physiological Society and presented at Experimental Biology 2006.

The study found that harbor seals pups that were heavier when captured from the wild continued to gain weight and grow regardless of whether the researchers placed them on a high fat or low fat diet. But smaller seals, regardless of which diet group they were put in, continued to lag behind in weight gain and even lost blubber depth.

"Our longitudinal study is leading to a better understanding of the role that fat consumption plays in the life of the harbor seal and could tie the declining population of seals and other marine mammals with the change in availability of seal prey, including herring," lead author Lori Polasek said.

*Paper presentation: "Growth and body condition of harbor seals on high and low fat diets," 12:45 p.m.-3 p.m. Monday April 3, Physiological Ecology and Evolutionary Physiology, 492.3/board #C768. On view 7:30 a.m. - 6 p.m. in the Convention Center Exhibit Hall. Research was by Lori Polasek and Shannon Atkinson of the University of Alaska, Fairbanks and Alaska Sealife Center, Seward, and Anne Hoover-Miller of the Alaska Sealife Center.

The research is part of a much larger effort to find out why harbor seals and other marine mammals are disappearing from the chilly waters off the Alaskan coast. The population decline, which has become a focus of research in the past 10-15 years, is potentially due to a variety of factors, Polasek said, including:

  • changes in availability of prey
  • warming ocean waters
  • pollution
  • increased presence of humans who may disturb the animals

Herring, capelin and eulachon are good sources of much-needed fat in the diet of harbor seals, but they have
'"/>

Source:American Physiological Society


Page: 1 2 3 4

Related biology news :

1. Alaskan puzzles, monitoring provide insight about North Pacific salmon runs
2. Habitat use by North Pacific right whales, Eubalaena japonica, in the Bering Sea and Gulf of Alaska
3. Lands surface change on Alaska tundra creating longer, warmer summers in Arctic
4. On a wing and a prayer - Alaska researchers seek clues to bird flu
5. NASA study: Alaskan fires affected Houston air quality in 2004
6. Shrinking ponds signal warmer, dryer Alaska
7. US life expectancy about to decline, researchers say
8. Alzheimers cognitive decline slowed
9. Horseshoe crab decline threatens shorebird species
10. Contaminants linked to sturgeon decline in Columbia river
11. HIV decline in Zimbabwe linked to behavioural change
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Alaska seal pup diet may hold key decline population

(Date:7/11/2014)... Institute of Standards and Technology (NIST) need a ... they often prove that necessity is truly the ... for M. Lorna De Leoz and Stephen Stein, ... glycomics. Glycomics is the study of the abundant, ... to proteins and lipids and influence cellular processes, ...
(Date:7/11/2014)... team of researchers, including scientists from the Max Planck ... reported a major step in understanding photosynthesis, the process ... the oxygen in its atmosphere and which is therefore ... , The researchers report the first direct visualization ... the step in which a specific protein complex, photosystem ...
(Date:7/11/2014)... has demonstrated that transplantation of mesenchymal stem cells can ... mouse models of Alzheimer,s disease (AD) and improve tissue ... Few studies are reported on the therapeutic effect of ... and on the effect on oxidative injury and neurogenesis ... and her team, School of Life Sciences, Tsinghua University, ...
Breaking Biology News(10 mins):A first direct glimpse of photosynthesis in action 2
... and the Manchester Metropolitan University have carried out the ... amber more than 30 millions years ago. , The ... the Dominican (Caribbean) regions has revealed new insights into ... period. , It is the first time ancient spiders ...
... at the National Institute of Allergy and Infectious Disease ... (NIH), have identified a critical human cell surface molecule ... virus that causes Kaposi's sarcoma and certain forms of ... HIV/AIDS, and it typically manifests as multiple purple-hued skin ...
... the amino acid supplement L-arginine following a heart attack ... may be associated with an increased risk of death, ... of JAMA. , L-arginine is a widely available dietary ... with hypertension, angina, heart failure and sexual dysfunction, according ...
Cached Biology News:Amber reveals ecology of 30 million year old spiders 2Landmark discovery of a Kaposi's sarcoma-associated herpesvirus receptor 2Landmark discovery of a Kaposi's sarcoma-associated herpesvirus receptor 3Little known DNA repair enzyme may be a tumor suppressor gene 2
(Date:7/10/2014)... Los Angeles, CA (PRWEB) July 10, 2014 ... Analytical and Bioanalytical techniques during 18-20 August, 2014 at ... to critically review the recent developments in Analytical & ... across the globe. , Speaking on this occasion, Dr. ... that Analytica Acta conference is a remarkable one ...
(Date:7/10/2014)... , July 10, 2014 ... Dmitry Medvedev , presented Russia,s ... BIOCAD . The Company is developing a unique ... MabNext project BIOCAD develops a number of innovative drugs ... autoimmune diseases. The ceremony took place at the International ...
(Date:7/10/2014)... --  Ceres, Inc . (Nasdaq: CERE ), ... results for the three months ended May 31, 2014 ... Ceres reported that the company and its customers have ... in Brazil, which concluded in June, despite dry and ... for part of the growing season. Yields of several ...
(Date:7/10/2014)... new study published today in the journal PNAS ... found that time of day and sleep deprivation have ... be crucial when looking at the best time of ... heart disease, and for administering medicines effectively. , Researchers ... Cancer Research, London, investigated the links between sleep deprivation, ...
Breaking Biology Technology:A Critical Review of Analytical Techniques for Improved Living Standards 2A Critical Review of Analytical Techniques for Improved Living Standards 3A Critical Review of Analytical Techniques for Improved Living Standards 4Dmitry Medvedev Presented BIOCAD the First National "Industry" Award 2Ceres Announces Fiscal Third Quarter 2014 Financial Results 2Ceres Announces Fiscal Third Quarter 2014 Financial Results 3Ceres Announces Fiscal Third Quarter 2014 Financial Results 4Ceres Announces Fiscal Third Quarter 2014 Financial Results 5Ceres Announces Fiscal Third Quarter 2014 Financial Results 6Ceres Announces Fiscal Third Quarter 2014 Financial Results 7Ceres Announces Fiscal Third Quarter 2014 Financial Results 8Ceres Announces Fiscal Third Quarter 2014 Financial Results 9Time of day crucial to accurately test for diseases, new research finds 2
... Stockholders Approve Board Authority to Implement Reverse Stock Split and ... of Total Shares and Authorized Shares, NEW HAVEN, Conn., ... that a Special Meeting of,Stockholders was held at the Omni ... At the meeting, shareholders voted to approve amendments to the,Company,s ...
... - For Full Year 2007, Strong Operating Earnings and Tax Benefits Drive ... and Product Sales Both Grow 14% -, - In 2008, Gen-Probe Expects ... Driving Anticipated EPS of ... GPRO ) today reported strong financial results for the fourth,quarter and ...
... DENVER, Feb. 13 Rocky Mountain Biosystems, ... announced receipt of a,grant award of approximately ... of Allergy and Infectious Diseases at the ... Self-Administered Vaccination Electromechanical,(SAVE) technology for influenza vaccination. ...
Cached Biology Technology:Vion Pharmaceuticals Holds Special Meeting of Stockholders 2Vion Pharmaceuticals Holds Special Meeting of Stockholders 3Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 2Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 3Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 4Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 5Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 6Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 7Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 8Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 9Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 10Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 11Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 12Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 13Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 14Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 15Gen-Probe Reports Strong Financial Results for Fourth Quarter and Full Year 2007 16NIH Funds Vaccine Research for Needle-free and Self-Administered Protection Against Pandemic Influenza 2
Mouse Anti-Human Killer Cell Immunoglobulin-like Receptor, Two Domains, Long Cytoplasmic Tail, 2 (KIR2DL2 (KIR2DL3 Monoclonal Antibody Family: Immunoglobulin Sub-Family: not assigned-Immunogl...
pH-dependent fluorescence; Maximum intensity observed in basic solutions....
Mouse anti human pro-Relaxin-2...
Mouse Anti-Human Kallikrein 2 (Hk2)...
Biology Products: