Pairing patterns and fitness in a free-ranging population of pinyon jays: What do they reveal about mate choice.

Marzluff, J. M. and Balda, R. P. (1988) Pairing patterns and fitness in a free-ranging population of pinyon jays: What do they reveal about mate choice. Condor, 90 (1). pp. 201-213. ISSN 1938-5129

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Abstract

Pairing in 141 pairs of Pinyon Jays (Gymnorhinus cyanocephalus ) was assortative for age, but was random for bill length and body weight. Assortative pairing for age may be favored because similar-aged partners produced slightly more young than dissimilar-aged ones and their young survived longer than young from dissimilar-aged pairs. Large jays appear to have the highest genetic quality because they lived longer and body size was heritable. Genetic quality of a mate, however, may be negated if phenotypic properties of partners are not compatible.

Item Type:	Article
ID number or DOI:	10.2307/1368449
Keywords:	Body size; fecundity; fitness; Gymnorhinus cyanocephalus; MATE selection; survival
Subjects:	Q Science > QL Zoology
NAU Depositing Author Academic Status:	Faculty/Staff
Department/Unit:	College of Engineering, Forestry, and Natural Science > Biological Sciences
Date Deposited:	18 Oct 2015 20:21
URI:	http://openknowledge.nau.edu/id/eprint/513

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