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Titolo:
Resource allocation between reproductive phases: the importance of thermalconditions in determining the cost of incubation
Autore:
Reid, JM; Monaghan, P; Ruxton, GD;
Indirizzi:
Univ Glasgow, Div Environm & Evolut Biol, Glasgow G12 8QQ, Lanark, Scotland Univ Glasgow Glasgow Lanark Scotland G12 8QQ ow G12 8QQ, Lanark, Scotland
Titolo Testata:
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES
fascicolo: 1438, volume: 267, anno: 2000,
pagine: 37 - 41
SICI:
0962-8452(20000107)267:1438<37:RABRPT>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
TIT PARUS-CAERULEUS; AVIAN CLUTCH SIZE; REARING CAPACITY; GREAT TITS; GEESE; CONSTRAINTS; POPULATION; VARIABLES; SUCCESS; TRAITS;
Keywords:
breeding success; nest structure; egg temperature; energy expenditure; starling, Sturnus vulgaris;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
46
Recensione:
Indirizzi per estratti:
Indirizzo: Reid, JM Univ Glasgow, Div Environm & Evolut Biol, Graham Kerr Bldg, Glasgow G12 8QQ, Lanark, Scotland Univ Glasgow Graham Kerr Bldg Glasgow Lanark Scotland G12 8QQ and
Citazione:
J.M. Reid et al., "Resource allocation between reproductive phases: the importance of thermalconditions in determining the cost of incubation", P ROY SOC B, 267(1438), 2000, pp. 37-41

Abstract

Changes in the resources allocated to particular stages of reproduction are expected to influence allocation to, and performance in, subsequent reproductive stages. Experimental manipulation of individual investment patternsprovides important evidence that such physiological trade-offs occur, and can highlight the key environmental variables that influence reproductive costs. By temporarily altering the thermal properties of starling nests, we reduced the energetic demand of first-clutch incubation, and examined the effect of this manipulation on performance during the same and the subsequent reproductive attempts. Compared with controls, starlings investing less in incubation were more successful in fledging young, and were more likely to hatch all their eggs if a subsequent reproductive attempt was made. Our results show that incubation demands can limit reproductive success, and that resources saved during incubation can be reallocated to later stages of the same reproductive attempt and to future reproductive attempts. This study also shows that small changes in thermal environment can affect breeding success by altering the energetic demands imposed on incubating parents, independently of the effect of temperature on other environmental variables such as food supply.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 09:49:45