Chronic dietary toxicity of methylmercury in the zebra finch,Poephila guttata

1988 ◽  
Vol 40 (1) ◽  
pp. 123-130 ◽  
Author(s):  
A. M. Scheuhammer
1976 ◽  
Vol 165 (4) ◽  
pp. 487-511 ◽  
Author(s):  
Arthur P. Arnold ◽  
Fernando Nottebohm ◽  
Donald W. Pfaff

1988 ◽  
Vol 274 (2) ◽  
pp. 255-264 ◽  
Author(s):  
James T. Watson ◽  
Elizabeth Adkins-Regan ◽  
Paul Whiting ◽  
Jon M. Lindstrom ◽  
Thomas R. Podleski

The Auk ◽  
1988 ◽  
Vol 105 (1) ◽  
pp. 78-88 ◽  
Author(s):  
Susan Knight Skagen

Abstract Lack's (1954, 1968) hypothesis that asynchronous hatching of altricial birds is an adaptive response to unpredictable food shortages during the breeding season was examined in the highly granivorous Zebra Finch (Poephila guttata). I compared growth and survival of nestlings in asynchronous and artificially created synchronous broods reared under food-limited and food-abundant conditions in an aviary. I also examined the role of parental experience on survival and growth of nestlings. There was no differential mortality of Zebra Finch nestlings due to either asynchrony or food abundance. Young in abundant food treatments grew more rapidly, however, than those in food-restricted treatments. Heaviest Zebra Finch nestlings in a brood grew more quickly than their lightest siblings when food was limited, supporting Lack's hypothesis. Further, differential survival of light and heavy siblings occurred when food was abundant, suggesting that asynchronous hatching can be maladaptive under some ecological conditions. Nestlings reared by inexperienced parents suffered greater mortality and slower growth when food was abundant than nestlings raised by experienced parents. Prefledging mass was correlated with size at adulthood.


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