TAILIEUCHUNG - Báo cáo y học: " Explaining individual variation in patterns of mass loss in breeding birds"

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học quốc tế cung cấp cho các bạn kiến thức về ngành y đề tài: Explaining individual variation in patterns of mass loss in breeding birds | Theoretical Biology and Medical Modelling BioMed Central Research Open Access Explaining individual variation in patterns of mass loss in breeding birds Sean A Rands 1 2 Innes C Cuthill1 and Alasdair I Houston1 Address 1Centre for Behavioural Biology School of Biological Sciences University of Bristol Woodland Road Bristol BS8 1UG UK and 2Department of Zoology University of Cambridge Downing Street Cambridge CB2 3EJ UK Email Sean A Rands - Innes C Cuthill - Alasdair I Houston - Corresponding author Published 16 May 2006 Received 15 February 2006 Theoretical Biology and Medical Modelling 2006 3 20 doi 1742-4682-3-20 Accepted 16 May 2006 This article is available from http content 3 1 20 2006 Rands et al licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Background Studies of birds have a disproportionate representation in the literature on lifehistory evolution because of the apparent ease with which the costs and benefits can be quantified and manipulated. During reproduction birds frequently show a highly conserved pattern of mass change and changes in mass loss during breeding have been widely considered to be a valid short-term measure of the costs of reproduction. Experimental manipulations of the breeding attempts of birds usually argue that the presence of a response shows that a cost of reproduction exists but there is little consensus as to how the size of these costs can be measured. Results We model this mass loss by considering how a parent can maximise its lifetime reproductive success using a theoretical framework that is particularly suited to modelling parental care in altricial birds. If lifetime .

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