NDLI: Common goldeneyes adjust maternal effort in relation to prior brood success and not current brood size

Content Provider	Springer Nature Link
Author	Pöysä, Hannu Virtanen, Juha Miloff, Markku
Copyright Year	1997
Abstract	Parental investment theory predicts that parental effort should be related to the reproductive value of the current brood. This depends on both the number of young and the survival prospects of each of them. Thus parents may provide more care to larger broods either because of (1) the direct effect of brood size per se on reproductive value (the “brood size” hypothesis) or because (2) past mortality, reflected in current brood size, predicts future mortality of the brood and hence its reproductive value (the “brood success” hypothesis). Earlier studies have not attempted to distinguish between these alternatives. We tested the hypotheses in the precocial, nidifugous common goldeneye Bucephala clangula, a species with uniparental female care. Maternal effort was measured as the time spent by the female in rearing the brood. We found that brood size itself is not associated with maternal effort, but that females modify their maternal effort according to the mortality already experienced by the brood, supporting the prediction of the brood success hypothesis. We also found that brood mortality varied considerably between broods and that previous mortality predicts future mortality within broods, basic assumptions of the brood success hypothesis.
Starting Page	101
Ending Page	106
Page Count	6
File Format	PDF
ISSN	03405443
Journal	Behavioral Ecology and Sociobiology
Volume Number	40
Issue Number	2
e-ISSN	14320762
Language	English
Publisher	Springer-Verlag
Publisher Date	1997-02-20
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Costs and benefits of temporary brood desertion in a Neotropical harvestman (Arachnida: Opiliones)

Male reed buntings do not adjust parental effort in relation to extrapair paternity

Reproductive effort in relation to maternal social rank in reindeer (Rangifer tarandus)

Cooperatively breeding cichlid fish adjust their testis size but not sperm traits in relation to sperm competition risk

Brood size manipulation affects frequency of second clutches in the blue tit

Sex-dependent responses to increased parental effort in the pied flycatcher

The effect of helpers on artificially increased brood size in sociable weavers (Philetairus socius)

O2 replenishment to fish nests: males adjust brood care to ambient conditions and brood development

Fledgling sex ratios in relation to brood size in size-dimorphic altricial birds

Common goldeneyes adjust maternal effort in relation to prior brood success and not current brood size

Similar Documents

Costs and benefits of temporary brood desertion in a Neotropical harvestman (Arachnida: Opiliones)

Male reed buntings do not adjust parental effort in relation to extrapair paternity

Reproductive effort in relation to maternal social rank in reindeer (Rangifer tarandus)

Cooperatively breeding cichlid fish adjust their testis size but not sperm traits in relation to sperm competition risk

Brood size manipulation affects frequency of second clutches in the blue tit

Sex-dependent responses to increased parental effort in the pied flycatcher

The effect of helpers on artificially increased brood size in sociable weavers (Philetairus socius)

O2 replenishment to fish nests: males adjust brood care to ambient conditions and brood development

Fledgling sex ratios in relation to brood size in size-dimorphic altricial birds

Common goldeneyes adjust maternal effort in relation to prior brood success and not current brood size