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Determining if lactating Weddell seal mothers are indeed fasting

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: Determining if lactating Weddell seal mothers are indeed fasting
Description:
Abstract:
Weddell seals are well adapted polar animals. They give birth to pups in the Antarctic summer when they haul out onto the ice. While feeding their pups, they have a massive fasting weight loss (and fat mobilisation) and their suckling pup has a correspondingly massive weight gain and fat deposition. The question of whether the lactating mothers actually do fast was investigated by testing blood samples for the presence of a chemical, trimethylamine-N-oxide (TMAO), derived from fish in the diet. During the first season of the study, two seals which had not been diving for many hours were given an oral dose of TMAO and blood samples were collected to monitor the change in TMAO concentrations with time. During the second season five seals were given an infusion of TMAO and blood samples were collected for 3.5 hours to monitor the change in TMAO concentrations with time. Single blood samples were taken from 12 other seals for additional biochemical measurements. Ketone bodies such as ß-hydroxybutyrate (BOB) are unexpectedly low in these animals. In order to see if the seals can utilise ketone bodies as soon as they are formed, thereby maintaining low blood concentrations, 12 seals were given infusions of BOB at 3 dose levels (n=4) and blood sampled for 3.5 hours to determine the disappearance rate for BOB. To provide control values for the TMAO and BOB infusion studies, 5 seals were given an infusion of saline solution and blood sampled for 3.5 hours as well.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Eisert, R. Oftedal, O.T. Lever, M. Ramdohr, S. Breier, B.H. Barrell, G.K. Detection of food intake in a marine mammal using marine osmolytes and their analogues as dietary biomarkers. Marine ecology progress series 300: 213-228, 2005.
Supplemental_Information:
REFERENCE: Barrell, G.K. Antarctic seals provide new insights to biological science. in: Poles apart: a study in contrasts. Lewkowicz A.G. (ed) Ottawa: University of Ottawa Press. 1999. pp.143-150
Supplemental_Information:
REFERENCE: Barrell, G.K. Vets explore physiology of lactating Weddell seals. Antarctic 15: 37, 1997.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19961118
Ending_Date: 19961204
Currentness_Reference:Unknown
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19981030
Ending_Date: 19981208
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: 166.7667
East_Bounding_Coordinate: 166.7667
North_Bounding_Coordinate: -77.6667
South_Bounding_Coordinate: -77.6667
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CARNIVORES > SEALS/SEA LIONS/WALRUSES
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > EVOLUTIONARY ADAPTATION
Theme_Keyword: Ross Island
Theme_Keyword: BIOTA
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: OCEAN > SOUTHERN OCEAN
Place_Keyword: CONTINENT > ANTARCTICA
Place_Keyword: GEOGRAPHIC REGION > POLAR
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GRAHAM BARRELL
Contact_Position: INVESTIGATOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Agriculture and Life Science Division
Address: PO BOX 84
Address: Lincoln University
City: Lincoln
State_or_Province: Canterbury
Postal_Code: 7647
Country: New Zealand
Contact_Voice_Telephone: +64 3 325 2811
Contact_Facsimile_Telephone: +64 3 325 3879
Contact_Electronic_Mail_Address: Barrell@lincoln.ac.nz
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: NZ/NZAI/ANZ > Antarctica New Zealand, New Zealand Antarctic Institute, New Zealand
Contact_Person: SHULAMIT GORDON
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctica New Zealand
Address: Private Bag 4745
City: Christchurch
Country: New Zealand
Contact_Voice_Telephone: +64 3 358 0200
Contact_Facsimile_Telephone: +64 3 358 0211
Contact_Electronic_Mail_Address: s.gordon@antarcticanz.govt.nz
Resource_Description: K071_1996_1997_NZ_2
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Not Available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.antarcticanz.govt.nz/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20050922
Metadata_Review_Date: 20080801
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: SHULAMIT GORDON
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Antarctica New Zealand
Address: Private Bag 4745
City: Christchurch
Country: New Zealand
Contact_Voice_Telephone: +64 3 358 0200
Contact_Facsimile_Telephone: +64 3 358 0211
Contact_Electronic_Mail_Address: s.gordon@antarcticanz.govt.nz
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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