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Vol. 42, No. 1, 1984
Issue release date: 1984
Section title: Paper
Folia Primatol 1984;42:2–16
(DOI:10.1159/000156140)

Timing of Birth, Female Reproductive Success and Infant Sex Ratio in Semifree-Ranging Barbary Macaques (Macaca sylvanus)

Paul A. · Thommen D.
Affenberg Salem, Salem, FRG

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Article / Publication Details

First-Page Preview
Abstract of Paper

Published online: 9/11/2008
Issue release date: 1984

Number of Print Pages: 15
Number of Figures: 0
Number of Tables: 0

ISSN: 0015-5713 (Print)
eISSN: 1421-9980 (Online)

For additional information: http://www.karger.com/FPR

Abstract

Examined were 5 years of data on the reproduction of a semifree-ranging population of Barbary macaques (Macaca sylvanus). In this seasonally breeding species – birth season: mid-March to beginning of August – primiparous 4-year-old females gave birth significantly later in the year than older primiparous and multiparous females, respectively. Multiparous females without an infant from the preceding season gave birth significantly earlier than females who had raised an infant. 88.4% of birth intervals were approximately 1 year, 11.6% about 2 years. Infant loss did not influence the length of the interbirth interval, but after the birth of the next surviving infant the interval was significantly longer. The interval following the 1st infant was significantly longer than after subsequent infants. After the birth of daughters primiparous females had markedly longer birth intervals than after the birth of sons. Infant mortality was 9.1%. Neonatal mortality was influenced by rank and parity of the mother and sex of the infant. Allomothering and aggression by older group members are thought to be the main causes of infant mortality. Female reproduction rates were not dependent on rank. High-ranking females, however, bore their 1st infant significantly earlier than low-ranking females. Low-ranking females had more daughters than sons, in high-ranking females the reverse was found. Differences from findings of other species are discussed with regard to differences in social organization and the reproductive strategies resulting from them.

© 1984 S. Karger AG, Basel


  

Author Contacts

Andreas Paul, Affenberg Salem, D-7777 Salem (FRG)

  

Article Information

Published online: September 11, 2008
Number of Print Pages : 15

  

Publication Details

Folia Primatologica (International Journal of PrimatologyInternationale Zeitschrift für PrimatologieJournal international de Primatologie)

Vol. 42, No. 1, Year 1984 (Cover Date: 1984)

Journal Editor: Crompton R.H. (Liverpool)
ISSN: 0015–5713 (Print), eISSN: 1421–9980 (Online)

For additional information: http://www.karger.com/FPR


Article / Publication Details

First-Page Preview
Abstract of Paper

Published online: 9/11/2008
Issue release date: 1984

Number of Print Pages: 15
Number of Figures: 0
Number of Tables: 0

ISSN: 0015-5713 (Print)
eISSN: 1421-9980 (Online)

For additional information: http://www.karger.com/FPR


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Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in goverment regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
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