Cognitive Ecology II
110 • p ravo s u d ov select for better parents that are able to produce high-quality offspring, rather than resolving the poten ...
7 The Cognitive-Buffer Hypothesis for the Evolution of Large Brains D a n i e l S o l No one, I presume, doubts that the large p ...
112 • s o l to mostly arise later in life, when the brain is fully functional, and should help compensate for the fitness lost t ...
The Cognitive-Buffer Hypothesis for the Evolution of Large Brains • 113 ics also highlight findings that do not support the hypo ...
114 • s o l known to co-vary in ways consistent both within and across species. The studies of Lefebvre et al. (2002) in birds a ...
The Cognitive-Buffer Hypothesis for the Evolution of Large Brains • 115 relative to body size, tend to contain more neurons than ...
116 • s o l Recent human studies provide additional evidence that brain size limits the capacity for developing flexible behavio ...
The Cognitive-Buffer Hypothesis for the Evolution of Large Brains • 117 from their adaptive peak for proper function in the wild ...
118 • s o l important is that variation is in some way predictable. If there are cues that give information on the state of the ...
The Cognitive-Buffer Hypothesis for the Evolution of Large Brains • 119 tercatcher Haematopus ostralegus (fig. 7.2), learning al ...
Ta b l e 7.1. Examples of studies reporting fitness benefits of behavioral flexibility Behavioral domain Example Source Foraging ...
Mate choice Flexible mating In the spotted woodpecker ( Picoides minor ) behavioral flexibility in the mating system is predicte ...
122 • s o l opening behavior observed in blue tits, the new behavior is likely to have been initiated by the decision of some in ...
The Cognitive-Buffer Hypothesis for the Evolution of Large Brains • 123 in behaviors increase fitness of individuals when expose ...
124 • s o l flexible behavioral responses. We can imagine three situations in which ani- mals confront ecological challenges tha ...
The Cognitive-Buffer Hypothesis for the Evolution of Large Brains • 125 To study the role of the brain in response to novel envi ...
126 • s o l species might be expected to be more tolerant to habitat loss than less flex- ible species, but not necessarily more ...
The Cognitive-Buffer Hypothesis for the Evolution of Large Brains • 127 In the white-crowned sparrow Zonotrichia leucophrys, an ...
128 • s o l Second, if a large brain reduces extrinsic mortality (figs. 7.3b and 7.4), this should prolong the reproductive life ...
The Cognitive-Buffer Hypothesis for the Evolution of Large Brains • 129 ship between brain and life span is not direct but is, m ...
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