skip to content
Feeding ecology of short-tailed shearwaters: breeding in Tasmania and foraging in the Antarctic?
ClosePreview this item
Checking...

Feeding ecology of short-tailed shearwaters: breeding in Tasmania and foraging in the Antarctic?

Author: Henri Weimerskirch; Yves Cherel
Edition/Format: Article Article : English
Publication:Marine Ecology Progress Series, v167 (19980618): 261-274
Other Databases: WorldCat
Summary:
The food, feeding and physiological ecology of foraging were studied in the short-tailed shearwater Puffinus tenuirostris of Tasmania, to establish whether this species can rely on Antarctic food to fledge its chick. Parents were found to use a 2-fold foraging strategy, on average performing 2 successive short trips at sea of 1 to 2 d duration followed by 1 long trip of 9 to 17 d. These long foraging trips are the  Read more...
Rating:

(not yet rated) 0 with reviews - Be the first.

Find a copy online

Links to this journal/publication

Find a copy in the library

&AllPage.SpinnerRetrieving; Finding libraries that hold this item...

Details

Document Type: Article
All Authors / Contributors: Henri Weimerskirch; Yves Cherel
ISSN:0171-8630
Language Note: English
Unique Identifier: 7025399072
Awards:

Abstract:

The food, feeding and physiological ecology of foraging were studied in the short-tailed shearwater Puffinus tenuirostris of Tasmania, to establish whether this species can rely on Antarctic food to fledge its chick. Parents were found to use a 2-fold foraging strategy, on average performing 2 successive short trips at sea of 1 to 2 d duration followed by 1 long trip of 9 to 17 d. These long foraging trips are the longest yet recorded for any seabird. During short trips the parents tend to lose mass, feeding the chick with Australian krill and fish larvae caught in coastal and neritic waters around Tasmania. The prey are caught at maximum diving depths of 13 m on average (maximum 30 m). During long trips, adults gain mass and feed their chicks with a very rich mixture of stomach oil and digested food composed of a high diversity of prey including myctophid fish, sub-Antarctic krill and squids. Prey are probably caught mainly in the Polar Frontal Zone, at least 1000 km south of Tasmania, at maximum depths of 58 m on average (maximum 71 m). Long foraging trips in distant southern waters gave at least twice the yield of trips in close waters but during the former, yield decreased with the time spent foraging, as indicated by the inverse relationship between time spent foraging and adult body condition. Decisions whether to forage in close or distant waters appear to be determined by the body condition of the parents rather than by that of the chick. Good body condition of parents was associated with high blood prolactin levels: birds in poor body condition invested in the restoration of body reserves and went to the rich area of the Polar Frontal Zone or to Antarctic waters, whereas those in good condition continued to provision the chick with food caught in Tasmanian waters and use their body reserves. The species thus exploits 2 water masses that differ in profitability. Most of the energy budget for rearing the chick is balanced by prey caught in rich southern waters where the birds build up their body reserves and find most of the energy needed by the chick. However, nearby shallow waters are important for the breeding strategy as they allow an increased rate of energy flow to the chick. In a species as abundant as the short-tailed shearwater, the 2-fold strategy has the advantage of limiting competition in coastal and shallow waters, as at any one time only 17% of birds are feeding there. The influence of the marine environment and energetic constraints on the evolution of provisioning strategies is discussed.

Reviews

User-contributed reviews
Retrieving GoodReads reviews...
Retrieving DOGObooks reviews...

Tags

Be the first.
Confirm this request

You may have already requested this item. Please select Ok if you would like to proceed with this request anyway.

Linked Data


Primary Entity

<http://www.worldcat.org/oclc/7025399072> # Feeding ecology of short-tailed shearwaters: breeding in Tasmania and foraging in the Antarctic?
    a schema:ScholarlyArticle, schema:Article, schema:CreativeWork ;
    library:oclcnum "7025399072" ;
    schema:contributor <http://experiment.worldcat.org/entity/work/data/73080194#Person/cherel_yves> ; # Yves Cherel
    schema:creator <http://experiment.worldcat.org/entity/work/data/73080194#Person/weimerskirch_henri> ; # Henri Weimerskirch
    schema:datePublished "1998-06-18" ;
    schema:description "The food, feeding and physiological ecology of foraging were studied in the short-tailed shearwater Puffinus tenuirostris of Tasmania, to establish whether this species can rely on Antarctic food to fledge its chick. Parents were found to use a 2-fold foraging strategy, on average performing 2 successive short trips at sea of 1 to 2 d duration followed by 1 long trip of 9 to 17 d. These long foraging trips are the longest yet recorded for any seabird. During short trips the parents tend to lose mass, feeding the chick with Australian krill and fish larvae caught in coastal and neritic waters around Tasmania. The prey are caught at maximum diving depths of 13 m on average (maximum 30 m). During long trips, adults gain mass and feed their chicks with a very rich mixture of stomach oil and digested food composed of a high diversity of prey including myctophid fish, sub-Antarctic krill and squids. Prey are probably caught mainly in the Polar Frontal Zone, at least 1000 km south of Tasmania, at maximum depths of 58 m on average (maximum 71 m). Long foraging trips in distant southern waters gave at least twice the yield of trips in close waters but during the former, yield decreased with the time spent foraging, as indicated by the inverse relationship between time spent foraging and adult body condition. Decisions whether to forage in close or distant waters appear to be determined by the body condition of the parents rather than by that of the chick. Good body condition of parents was associated with high blood prolactin levels: birds in poor body condition invested in the restoration of body reserves and went to the rich area of the Polar Frontal Zone or to Antarctic waters, whereas those in good condition continued to provision the chick with food caught in Tasmanian waters and use their body reserves. The species thus exploits 2 water masses that differ in profitability. Most of the energy budget for rearing the chick is balanced by prey caught in rich southern waters where the birds build up their body reserves and find most of the energy needed by the chick. However, nearby shallow waters are important for the breeding strategy as they allow an increased rate of energy flow to the chick. In a species as abundant as the short-tailed shearwater, the 2-fold strategy has the advantage of limiting competition in coastal and shallow waters, as at any one time only 17% of birds are feeding there. The influence of the marine environment and energetic constraints on the evolution of provisioning strategies is discussed." ;
    schema:exampleOfWork <http://worldcat.org/entity/work/id/73080194> ;
    schema:isPartOf <http://worldcat.org/issn/0171-8630#167> ;
    schema:name "Feeding ecology of short-tailed shearwaters: breeding in Tasmania and foraging in the Antarctic?" ;
    schema:pageEnd "274" ;
    schema:pageStart "261" ;
    schema:productID "7025399072" ;
    schema:url <http://www.jstor.org/stable/24827796> ;
    wdrs:describedby <http://www.worldcat.org/title/-/oclc/7025399072> ;
    .


Related Entities

<http://experiment.worldcat.org/entity/work/data/73080194#Agent/inter_research> # Inter-Research
    a bgn:Agent ;
    schema:name "Inter-Research" ;
    .

<http://experiment.worldcat.org/entity/work/data/73080194#Person/weimerskirch_henri> # Henri Weimerskirch
    a schema:Person ;
    schema:name "Henri Weimerskirch" ;
    .

<http://worldcat.org/issn/0171-8630>
    a schema:Periodical ;
    rdfs:label "Marine Ecology Progress Series" ;
    schema:issn "0171-8630" ;
    schema:publisher <http://experiment.worldcat.org/entity/work/data/73080194#Agent/inter_research> ; # Inter-Research
    .

<http://www.jstor.org/stable/24827796>
    rdfs:comment "JSTOR Sustainability Collection" ;
    .

<http://www.worldcat.org/title/-/oclc/7025399072>
    a genont:InformationResource, genont:ContentTypeGenericResource ;
    schema:about <http://www.worldcat.org/oclc/7025399072> ; # Feeding ecology of short-tailed shearwaters: breeding in Tasmania and foraging in the Antarctic?
    schema:dateModified "2017-08-12" ;
    void:inDataset <http://purl.oclc.org/dataset/jstor_sustain> ;
    .


Content-negotiable representations

Close Window

Please sign in to WorldCat 

Don't have an account? You can easily create a free account.