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Biparental care and male reproductiv...

Lappan, Susan.

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Biparental care and male reproductive strategies in Siamangs (Symphalangus syndactylus) in southern Sumatra (Indonesia).

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Biparental care and male reproductive strategies in Siamangs (Symphalangus syndactylus) in southern Sumatra (Indonesia)./
作者:	Lappan, Susan.
面頁冊數:	312 p.
附註:	Source: Dissertation Abstracts International, Volume: 65-12, Section: A, page: 4621.
Contained By:	Dissertation Abstracts International65-12A.
標題:	Anthropology, Physical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3157833
ISBN:	049690275X

Biparental care and male reproductive strategies in Siamangs (Symphalangus syndactylus) in southern Sumatra (Indonesia).
Lappan, Susan.

Biparental care and male reproductive strategies in Siamangs (Symphalangus syndactylus) in southern Sumatra (Indonesia). - 312 p.

Source: Dissertation Abstracts International, Volume: 65-12, Section: A, page: 4621.

Thesis (Ph.D.)--New York University, 2005.

Evolutionary theory predicts that male parental care in mammals will be rare. However, siamang males are reported to provide extensive care for infants. Infant care patterns in wild siamangs have not been described in detail, and the function of male care is unknown. This dissertation reports the results of a 23-month study of parenting behavior in wild siamangs at the Way Canguk Research Station in Sumatra, Indonesia. In this study, I employed behavioral data to describe patterns of infant care in five groups of wild siamangs, to assess the effects of infant care on adult energy budgets at each developmental stage, and to test hypotheses regarding the function of male care of infants in siamangs.

ISBN: 049690275XSubjects--Topical Terms:

877524
Anthropology, Physical.

Biparental care and male reproductive strategies in Siamangs (Symphalangus syndactylus) in southern Sumatra (Indonesia).
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245 1 0 $a Biparental care and male reproductive strategies in Siamangs (Symphalangus syndactylus) in southern Sumatra (Indonesia).
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500 $a Source: Dissertation Abstracts International, Volume: 65-12, Section: A, page: 4621.
500 $a Adviser: Clifford J. Jolly.
502 $a Thesis (Ph.D.)--New York University, 2005.
520 $a Evolutionary theory predicts that male parental care in mammals will be rare. However, siamang males are reported to provide extensive care for infants. Infant care patterns in wild siamangs have not been described in detail, and the function of male care is unknown. This dissertation reports the results of a 23-month study of parenting behavior in wild siamangs at the Way Canguk Research Station in Sumatra, Indonesia. In this study, I employed behavioral data to describe patterns of infant care in five groups of wild siamangs, to assess the effects of infant care on adult energy budgets at each developmental stage, and to test hypotheses regarding the function of male care of infants in siamangs.
520 $a The results of this study suggest that it may be primarily females that benefit from male care of infants. The reduction of the energetic burden on females associated with male care may facilitate a higher rate of offspring production than would otherwise be possible. There was no relationship between quantity of male care and indicators of male-female social bond strength or male retention of a breeding position in the group.
520 $a Siamangs have been described as being socially monogamous. However, four study groups were multi-male, and the females in three groups copulated with two male group-members. These observations raise questions about how multi-male siamang groups are formed and how "pair-bonding" behaviors differ in multi-male and uni-male groups. These issues were explored using behavioral data and genetic data obtained from non-invasively collected fecal samples.
520 $a The genetic data suggest that multi-male groups may be formed by the retention of natal males or by the immigration of adult males into groups already containing an adult pair. Sexual polyandry was only observed in groups containing two males that were not matrilineal relatives of the adult female. Comparisons of multi-male groups and uni-male groups suggest that male-female social, spatial and sexual relationships are influenced by their social contexts. This in turn suggests that siamang "pair-bonding" may not be a property of individual male-female relationships, but rather may be the consequence of specific social circumstances.
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