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Can I read Sex-specific Maternal Investment in Pronghorn, and the Question of a Limit on Differential Provisioning in Ungulates on EtoBox?
Sex-specific Maternal Investment in Pronghorn, and the Question of a Limit on Differential Provisioning in Ungulates by John A. Byers; James D. Moodie is a Agricultural and Biological Sciences article available to read on EtoBox.
What is Sex-specific Maternal Investment in Pronghorn, and the Question of a Limit on Differential Provisioning in Ungulates about?
Prediction that mothers will invest more in individual sons than daughters in polygynous mammals has been confirmed in several species. However, among polygynous ungulates, differential investment occurs in some species, but not in others. Because ungulates have postnatal growth rates among the highest in mammals, we hypothesized that level of maternal investment limits the ability of offspring of one sex to evolve faster growth rates, even when intrasexual selection might favor faster growth. We predicted that comparative rate of maternal investment would explain the distribution of differential investment among ungulates, and examined our data on pronghorn (Antilocapra americana), which show the highestknown rate of maternal investment among ungulates. Data on birth weights, suckling rates, agespecific frequency of maternal termination of suckling bouts, age at weaning, and rate of rejected suckle attempts showed either no sex differences or else a slight excess investment in daughters. In concordance with these data, female fawns spent more energy in activity than did male fawns. Among ungulates for which data are available, the best predictor of differential investment is not d
Who reads Sex-specific Maternal Investment in Pronghorn, and the Question of a Limit on Differential Provisioning in Ungulates?
It is typically read by researchers, students, and practitioners in Agricultural and Biological Sciences.
- Author
- John A. Byers; James D. Moodie
- Publisher
- Springer; Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0340-5443)
- Published
- 1990
- Language
- EN
- Field
- Agricultural and Biological Sciences (Life Sciences)