東華大學圖書館 |

Sexual Selection in the Little-Known Kinda Baboon.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Sexual Selection in the Little-Known Kinda Baboon./
作者:	Petersdorf, Megan.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:	222 p.
附註:	Source: Dissertations Abstracts International, Volume: 83-06, Section: B.
Contained By:	Dissertations Abstracts International83-06B.
標題:	Biology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28714707
ISBN:	9798496508384

Sexual Selection in the Little-Known Kinda Baboon.
Petersdorf, Megan.

Sexual Selection in the Little-Known Kinda Baboon. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 222 p.

Source: Dissertations Abstracts International, Volume: 83-06, Section: B.

Thesis (Ph.D.)--New York University, 2021.

This item must not be sold to any third party vendors.

Understanding the diversity and evolution of mating systems in the primate order is a key question in biological anthropology. Mating systems evolve from selection on males and females to maximize reproductive success and are ultimately shaped by natural and sexual selection. Compared to other mammalian orders, the Primates exhibit extraordinary diversity in mating systems. They exhibit variation among mating systems by exhibiting monogamy, polyandry, polygyny, and polygynandry. Even within a single mating system, like polygynandry, there is remarkable variation in the presence and function of social, reproductive, and life-history strategies. In this dissertation, I test conceptual and theoretical models that have been proposed for the co-evolution of male and female reproductive strategies. Specifically, I look at how reproductive synchrony has influenced the evolution of male competitive regimes, and how female sexual signals may have evolved to reinforce or oppose male monopolization and ultimately mating outcomes. I test this framework in the Kinda baboon (Papio kindae), a fascinating but little-known baboon species found in central Africa. In contrast to other polygynandrous baboon species, Kinda baboon morphology and behavior suggests that males have evolved under weaker direct, and stronger indirect, male-male competition. In this dissertation, I test the causes and consequences of this male competitive regime in a wild group of Kinda baboons in Zambia. I combine seven years of long-term data on demographic and reproductive patterns with one year of short-term data on sexual behavior, female reproductive physiology, and female sexual signals. In Chapter 2, I examine the relationship between reproductive synchrony and mating skew. I find that Kinda baboons live in a seasonal environment with seasonal breeding. Combined with large group sizes, this may explain the moderate to high degree of reproductive synchrony. Additionally, I find that male mating is not skewed or related to dominance rank, and that males exhibit 'bottom-entry' immigration with succession-based dominance acquisition. Females are promiscuous, but show skewed mating patterns towards a top partner unrelated to male dominance rank. In Chapter 3, I consider whether female fertility signals may have evolved in response to the Kinda male competitive regime. I show that compared to other baboon species, sexual swellings are less accurate indicators of intra- and inter-cycle fertility. In addition, the rate of copulation calls and sexual presentations did not vary with fertility. In Chapter 4, I take a closer look at the relationship between sexual swellings, fertility, and male allocation of mating effort. I find that sexual swelling size is a stronger predictor of male mating effort than female fertility, and that males allocate mating effort throughout most of the cycle. Further, I find that the alpha male does not allocate his mating effort in a manner that would improve his reproductive success relative to other males. I suggest that female fertility signals in Kinda baboons function to decrease their monopolizability to males beyond that of reproductive synchrony, facilitate more direct forms of female mate choice for non-dominance related qualities in males, and help to explain the lack of mating skew. Overall, my results support the hypothesis that Kinda baboons have evolved under weaker direct, and stronger, indirect male-male competition, and highlight how variation in aspects of the environment can influence the interaction of intra- and inter-sexual selection, and ultimately mating and reproductive success. My dissertation provides new comparative data on an understudied baboon species and contributes to our understanding of the evolution of mating system diversity.

ISBN: 9798496508384Subjects--Topical Terms:

522710
Biology.
Subjects--Index Terms:

Baboons

Sexual Selection in the Little-Known Kinda Baboon.
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500 $a Source: Dissertations Abstracts International, Volume: 83-06, Section: B.
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506 $a This item must not be sold to any third party vendors.
520 $a Understanding the diversity and evolution of mating systems in the primate order is a key question in biological anthropology. Mating systems evolve from selection on males and females to maximize reproductive success and are ultimately shaped by natural and sexual selection. Compared to other mammalian orders, the Primates exhibit extraordinary diversity in mating systems. They exhibit variation among mating systems by exhibiting monogamy, polyandry, polygyny, and polygynandry. Even within a single mating system, like polygynandry, there is remarkable variation in the presence and function of social, reproductive, and life-history strategies. In this dissertation, I test conceptual and theoretical models that have been proposed for the co-evolution of male and female reproductive strategies. Specifically, I look at how reproductive synchrony has influenced the evolution of male competitive regimes, and how female sexual signals may have evolved to reinforce or oppose male monopolization and ultimately mating outcomes. I test this framework in the Kinda baboon (Papio kindae), a fascinating but little-known baboon species found in central Africa. In contrast to other polygynandrous baboon species, Kinda baboon morphology and behavior suggests that males have evolved under weaker direct, and stronger indirect, male-male competition. In this dissertation, I test the causes and consequences of this male competitive regime in a wild group of Kinda baboons in Zambia. I combine seven years of long-term data on demographic and reproductive patterns with one year of short-term data on sexual behavior, female reproductive physiology, and female sexual signals. In Chapter 2, I examine the relationship between reproductive synchrony and mating skew. I find that Kinda baboons live in a seasonal environment with seasonal breeding. Combined with large group sizes, this may explain the moderate to high degree of reproductive synchrony. Additionally, I find that male mating is not skewed or related to dominance rank, and that males exhibit 'bottom-entry' immigration with succession-based dominance acquisition. Females are promiscuous, but show skewed mating patterns towards a top partner unrelated to male dominance rank. In Chapter 3, I consider whether female fertility signals may have evolved in response to the Kinda male competitive regime. I show that compared to other baboon species, sexual swellings are less accurate indicators of intra- and inter-cycle fertility. In addition, the rate of copulation calls and sexual presentations did not vary with fertility. In Chapter 4, I take a closer look at the relationship between sexual swellings, fertility, and male allocation of mating effort. I find that sexual swelling size is a stronger predictor of male mating effort than female fertility, and that males allocate mating effort throughout most of the cycle. Further, I find that the alpha male does not allocate his mating effort in a manner that would improve his reproductive success relative to other males. I suggest that female fertility signals in Kinda baboons function to decrease their monopolizability to males beyond that of reproductive synchrony, facilitate more direct forms of female mate choice for non-dominance related qualities in males, and help to explain the lack of mating skew. Overall, my results support the hypothesis that Kinda baboons have evolved under weaker direct, and stronger, indirect male-male competition, and highlight how variation in aspects of the environment can influence the interaction of intra- and inter-sexual selection, and ultimately mating and reproductive success. My dissertation provides new comparative data on an understudied baboon species and contributes to our understanding of the evolution of mating system diversity.
590 $a School code: 0146.
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650 4 $a Physical anthropology. $3 518358
650 4 $a Behavioral sciences. $3 529833
653 $a Baboons
653 $a Behavioral ecology
653 $a Endocrinology
653 $a Reproductive strategies
653 $a Sexual selection
653 $a Sexual signals
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710 2 $a New York University. $b Anthropology. $3 1670804
773 0 $t Dissertations Abstracts International $g 83-06B.
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791 $a Ph.D.
792 $a 2021
793 $a English
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