| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2013-07-26 |
| タイトル |
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タイトル |
Demography, female life history, and reproductive profiles among the chimpanzees of Mahale |
| タイトル |
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タイトル |
Demography, female life history, and reproductive profiles among the chimpanzees of Mahale |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| アクセス権 |
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アクセス権 |
metadata only access |
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アクセス権URI |
http://purl.org/coar/access_right/c_14cb |
| 著者 |
NISHIDA, Toshisada
CORP, Nadia
HAMAI, Miya
HASEGAWA, Toshikazu
HIRAI-HASEGAWA, Mariko
HOSAKA, Kazuhiko
HUNT, Kevin D
ITOH, Noriko
KAWANAKA, Kenji
MATSUMOTO-ODA, Akiko
MITANI, John C
NAKAMURA, Michio
NORIKOSHI, Koshi
SAKAMAKI, Tetsuya
TURNER, Linda
UEHARA, Shigeo
ZAMMA, Koichiro
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| 著者別名 |
長谷川, 眞理子
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Demography provides critical data to increase our understanding of the evolution, ecology, and conservation of primate populations. The chimpanzees of the Mahale Mountains National Park, Tanzania, have been studied for more than 34 yr on the basis of individual identification and standardized attendance records. From this long-term study, we derived the following demographic data: The major cause of death was disease (48%), followed by senescence (24%) and within-species aggression (16%). Fifty percent of Mahale chimpanzees died before weaning. The median ages of female life history variables were: first maximal swelling, 10.0 yr (n = 5); emigration, 11.0 yr (n = 11); and first birth, 13.1 yr (n = 5). The median period of adolescent infertility was 2.8 yr (n = 4) when calculated from the age at immigration to that at first birth. Female fecundity was highest between 20 and 35 yr of age, with an annual birth rate of 0.2. Twenty-six females that were observed from a young age (10-13 yr) to death at various ages (15-40 yr) gave birth to an average of 3.9 and weaned an average of 1.4 offspring. Twenty-five females that were observed from middle age (18-33 yr) to death in older age (31-48) gave birth to an average of 2.7 and weaned an average of 2.0 offspring. The post-reproductive lifespan for female chimpanzees was defined as the number of years that passed from the year when the last offspring was born to the year when the female died, minus 5. Twenty-five percent of old females had a post-reproductive lifespan. The interbirth interval after the birth of a son (x̄ = 72 mo) tended to be longer than that after the birth of a daughter (x̄ = 66 mo). The extent of female transfer, which is a rule in chimpanzees, is influenced by the size and composition of the unit group and size of the overall local community. |
| 書誌情報 |
American Journal of Primatology
en : American Journal of Primatology
巻 59,
号 3,
p. 99-121,
発行日 2003-03-01
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| 出版者 |
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出版者 |
Wiley-Blackwell |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
02752565 |
| PubMed番号 |
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識別子タイプ |
PMID |
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関連識別子 |
12619045 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1002/ajp.10068 |
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関連名称 |
10.1002/ajp.10068 |
| 権利 |
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権利情報 |
© 2003 Wiley-Liss |
