Beyond size–number trade-offs: clutch size as a maternal effect
نویسندگان
چکیده
منابع مشابه
The offspring-size/clutch-size trade-off in mammals.
The Smith-Fretwell model for optimal offspring size assumes the existence of an inverse proportional relationship (i.e., trade-off) between the number of offspring and the amount of resources invested in an individual offspring; virtually all of the many models derived from theirs make the same trade-off assumption. Over the last 30 years it has become apparent that the predicted proportionalit...
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Matches between the bills of hummingbirds and the flowers they visit have been interpreted as examples of coadaptation and feeding specialization. Observations of birds feeding at flowers longer or shorter than their bills combined with a lack of experimental evidence for foraging trade-offs, however, fail to support these interpretations. We addressed these inconsistencies by considering a sel...
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Coastal birds are critical ecosystem constituents on sandy shores, yet are threatened by depressed reproductive success resulting from direct and indirect anthropogenic and natural pressures. Few studies examine clutch fate across the wide range of environments experienced by birds; instead, most focus at the small site scale. We examine survival of model shorebird clutches as an index of true ...
متن کاملTrade-offs
23. Stent, G.S. (1972). Prematurity and uniqueness in scientific discovery. Sci. Am. 227, 84–93. 24. Mirsky, A.E., and Pollister, A.W. (1946). Chromosin, a desoyribose nucleoprotein complex of the cell nucleus. J. Gen. Physiol. 30, 117–148. 25. Boivin, A. (1947). Directed mutation in colon bacilli, by an inducing principle of desoxyribonucleic nature: Its meaning for the general biochemistry of...
متن کاملTrade-Offs in Male Display Activity with Lek Size
In lek mating systems, males aggregate and defend arenas where they display for females; females select and mate with a male and then solely raise their offspring. Generally, female visits and copulations increase and reproductive variance in male mating success declines with lek size. Here we investigate how male display effort changes across a gradient in lek size. We expect male display effo...
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ژورنال
عنوان ژورنال: Philosophical Transactions of the Royal Society B: Biological Sciences
سال: 2009
ISSN: 0962-8436,1471-2970
DOI: 10.1098/rstb.2008.0247