ISSN:
1432-1939
Keywords:
Lack's hypothesis
;
Parental investment
;
Feeding nestlings
;
Clutch size
;
Tradeoff model
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract A recent model of parental provisioning (the “tradeoff model”) suggests that the maximum delivery rate of food to nestlings represents a tradeoff between parental residual reproductive value and nestling survival. In contrast, Lack's hypothesis suggests that maximum provisioning rate determines brood size and therefore delivery rates are limited by shortages of food or foraging time, not by tradeoffs of parental investment. Several authors have examined the shape of the per-nestling feeding curves to test the tradeoff model against Lack's hypothesis. We show that Lack's hypothesis can produce per-nestling feeding curves consistent with the tradeoff model. Therefore, the shape of the per-nestling feeding curve cannot be used to distinguish between the models.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00317744
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