Abstract:
:Adult males in social groups often compete with other male group members for access to adult females. In some primate species, males also seek mating opportunities in neighboring social groups. Such extra-group fertilizations (EGFs) provide an additional source of variation in male fitness. This additional component of fitness provided by EGFs must be incorporated into analyses that investigate sources of variation in male lifetime reproductive success. In this study, a model is analyzed in which male fitness over a 10-year sample period is decomposed into additive and multiplicative variance and covariance components. The data come from an ongoing study of a wild population of Verreaux's sifaka (Propithecus verreauxi verreauxi) located at Beza Mahafaly Special Reserve, Southwest Madagascar. Paternity and demographic data for 134 males are used to decompose male fitness into the following three multiplicative components: reproductive lifespan during sample period, fertility, and offspring survival. These multiplicative components are estimated for males reproducing within their resident groups plus (i.e., the additive portion) for males reproducing in neighboring social groups. The analysis shows that variation in fertility makes the largest contribution to variation in total fitness, followed by variation in amount of time spent in sample period (which is a proxy of total reproductive lifespan) and variation in offspring survival. EGFs contribute an important source of variation to male fitness, and numerous factors enhance the opportunities for EGFs in male sifaka. These include female choice, a high degree of home range overlap, and a limited mating season.
journal_name
Am J Phys Anthropoljournal_title
American journal of physical anthropologyauthors
Lawler RRdoi
10.1002/ajpa.20507subject
Has Abstractpub_date
2007-02-01 00:00:00pages
267-77issue
2eissn
0002-9483issn
1096-8644journal_volume
132pub_type
杂志文章abstract::As part of the road widening scheme between London and Dover, Oxford Archaeology South uncovered a large boundary ditch of Iron Age origin that contained Iron Age and Roman inhumations, adjacent to which was a small mid-late Roman cemetery, interpreted as a rural cemetery for Romano-British farmers. Grave goods in the...
journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
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journal_title:American journal of physical anthropology
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journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
doi:10.1002/(SICI)1096-8644(199808)106:4<521::AID-AJPA
更新日期:1998-08-01 00:00:00
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pub_type: 历史文章,杂志文章
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journal_title:American journal of physical anthropology
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doi:10.1002/ajpa.1056
更新日期:2001-05-01 00:00:00
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pub_type: 杂志文章
doi:10.1002/ajpa.20963
更新日期:2009-02-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 杂志文章
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更新日期:2002-06-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 杂志文章
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更新日期:2017-05-01 00:00:00
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pub_type: 历史文章,杂志文章
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更新日期:2002-02-01 00:00:00
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journal_title:American journal of physical anthropology
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更新日期:2015-09-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
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更新日期:2005-11-01 00:00:00
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journal_title:American journal of physical anthropology
pub_type: 历史文章,杂志文章
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更新日期:2018-10-01 00:00:00
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pub_type: 历史文章,杂志文章
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pub_type: 杂志文章,评审
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journal_title:American journal of physical anthropology
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更新日期:2008-05-01 00:00:00
abstract::The purpose of this research was to study intra- and interspecific variability in mineral density in the femoral diaphysis of nonhuman primates. Four hundred five sections were taken from five sites along the femoral diaphysis of 34 macaques (Macaca sp.), 24 squirrel monkeys (Saimirisciureus), and 23 tamarins (Saguinu...
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