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Fowler KJ, Potratz EJ, Malone M, Halloway A, Peplinski J, Brown JS. Looking at the bid picture: A framework for identifying reverse auctions in ecological systems. J Anim Ecol 2024; 93:774-783. [PMID: 38679917 DOI: 10.1111/1365-2656.14085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 03/18/2024] [Indexed: 05/01/2024]
Abstract
Biological market theory can be used to explain intraspecific cooperation, interspecific mutualism, and sexual selection through models of game theory. These models describe the interactions between organisms as two classes of traders (buyers/sellers) exchanging commodities in the form of goods (e.g. food, shelter, matings) and services (e.g. warning calls, protection). Here, we expand biological market theory to include auction theory where bidding serves to match buyers and sellers. In a reverse auction, the seller increases the value of the item or decreases the cost until a buyer steps forward. We provide several examples of ecological systems that may have reverse auctions as underlying mechanisms to form mutualistic relationships. We focus on the yellow baboon (Papio cynocephalus) mating system as a case study to propose how the mechanisms of a reverse auction, which have the unintended but emergent consequence of producing a mutually beneficial outcome that improves collective reproductive benefits of the troop in this multi-female multi-male polygynandrous social system. For the yellow baboon, we posit that the "seller" is the reproductively cycling female, and the "buyer" is a male looking to mate with a cycling female. To the male, the "item for the sale" is the opportunity to sire an offspring, the price is providing safety and foraging time (via consortship) to the female. The "increasing value of the item for sale" is the chance of conception, which increases with each cycle since a female has resumed cycling post-partum. The female's sexual swelling is an honest indicator of that cycle's probability of conception, and since resident males can track a female's cycle since resumption, there is transparency. The males presumably know the chance of conception when choosing to bid by offering consortship. Across nature, this reverse auction game likely exists in other inter- and intraspecific social relationships. Considering an ecological system as a reverse auction broadens our view of social evolution and adaptations through the lens of human economic structures.
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Affiliation(s)
- Katherine J Fowler
- Department of Biological Sciences, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Emily J Potratz
- Department of Biological Sciences, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Margaret Malone
- Florida Institute of Environment & Department of Biological Sciences, Florida International University, North Miami, Florida, USA
| | - Abdel Halloway
- Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
| | - Joy Peplinski
- Department of Biological Sciences, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Joel S Brown
- Department of Biological Sciences, University of Illinois at Chicago, Chicago, Illinois, USA
- Department of Integrated Mathematical Oncology, Moffit Cancer Center, Tampa, Florida, USA
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2
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Hawley CR, Patterson SK, Silk JB. Tradeoffs between mating effort and parenting effort in a polygynandrous mammal. iScience 2023; 26:106991. [PMID: 37534148 PMCID: PMC10391602 DOI: 10.1016/j.isci.2023.106991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 02/09/2023] [Accepted: 05/25/2023] [Indexed: 08/04/2023] Open
Abstract
Reproductive strategies are defined by expenditures of time and energy devoted to mating effort, which increases mating opportunities, and parenting effort, which enhances the survival of offspring. We examine tradeoffs between mating effort and parenting effort in male olive baboons, Papio anubis, a species in which males compete for mating opportunities, but also form ties to lactating females (primary associations) that represent a form of parenting effort. Males that are involved in more primary associations invest less in mating effort than males who are involved in fewer primary associations. Males that are involved in more primary associations play a smaller role in establishing proximity to their primary associates than other males, suggesting that males operate under temporal constraints. There is also some evidence that involvement in primary associations negatively affects paternity success. Taken together, the data suggest that males face tradeoffs between mating effort and parenting effort.
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Affiliation(s)
- Caitlin R. Hawley
- School of Human Evolution and Social Change, Arizona State University, Tempe, AZ 85287, USA
| | - Sam K. Patterson
- Department of Anthropology, New York University, New York, NY 10003, USA
| | - Joan B. Silk
- School of Human Evolution and Social Change, Arizona State University, Tempe, AZ 85287, USA
- Institute for Human Origins, Arizona State University, Tempe, AZ 85287, USA
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3
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Rigaill L, Vaglio S, Setchell JM, Suda-Hashimoto N, Furuichi T, Garcia C. Chemical cues of identity and reproductive status in Japanese macaques. Am J Primatol 2022; 84:e23411. [PMID: 35757843 DOI: 10.1002/ajp.23411] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 04/26/2022] [Accepted: 05/27/2022] [Indexed: 01/30/2023]
Abstract
Olfactory communication plays an important role in the regulation of socio-sexual interactions in mammals. There is growing evidence that both human and nonhuman primates rely on odors to inform their mating decisions. Nevertheless, studies of primate chemical ecology remain scarce due to the difficulty of obtaining and analyzing samples. We analyzed 67 urine samples from five captive female Japanese macaques (Macaca fuscata) and 30 vaginal swabs from three of these females using gas chromatography-mass spectrometry and examined the relationship between odor (compounds identified, richness, intensity, and diversity) and female identity as well as cycle phase. We found a total of 36 urine compounds of which we identified 31, and 68 vaginal compounds of which we identified 37. Our results suggest that urine and vaginal odor varied more between individuals than within cycle phases. However, we found that within a female cycle, urine samples from similar phases may cluster more than samples from different phases. Our results suggest that female odor may encode information about identity (vaginal and urine odor) and reproductive status (urine odor). The question of how conspecifics use female urine and vaginal odor remains open and could be tested using bioassays. Our results and their interpretation are constrained by our limited sample size and our study design. Nonetheless, our study provides insight into the potential signaling role of female odor in sexual communication in Japanese macaques and contributes to our understanding of how odors may influence mating strategies in primates.
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Affiliation(s)
- Lucie Rigaill
- EthoS (Éthologie animale et humaine), CNRS, Université de Rennes 1, Normandie Université, Rennes, France.,Center for the Evolutionary Origins of Human Behavior, Kyoto University, Inuyama, Japan
| | - Stefano Vaglio
- School of Sciences, University of Wolverhampton, Wolverhampton, UK
| | - Joanna M Setchell
- Department of Anthropology & Behaviour, Ecology and Evolution Research Centre, Durham University, Durham, UK
| | - Naoko Suda-Hashimoto
- Center for the Evolutionary Origins of Human Behavior, Kyoto University, Inuyama, Japan
| | - Takeshi Furuichi
- Center for the Evolutionary Origins of Human Behavior, Kyoto University, Inuyama, Japan
| | - Cécile Garcia
- Eco-anthropologie (EA), Muséum national d'Histoire naturelle, CNRS, Université Paris Cité, Paris, France
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4
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Lee DS, Knittel T, Deschner T, Heistermann M, Higham JP. Testing the role of testosterone versus estrogens in mediating reproductive transitions in female rhesus macaques. Horm Behav 2022; 139:105123. [PMID: 35149292 DOI: 10.1016/j.yhbeh.2022.105123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 01/11/2022] [Accepted: 01/20/2022] [Indexed: 11/16/2022]
Abstract
In male vertebrates, testosterone is generally known to coordinate reproductive trade-offs, in part by promoting the transition to the next reproduction at the expense of current parental care. The role of testosterone in reproductive transitions has been little tested in female vertebrates, especially in mammals. The present study sought to fill this gap, by first undertaking an experimental study, in which we identified DHT, androstenediol, and in particular etiocholanolone, as fecal androgen metabolites which reflect serum testosterone concentration in female rhesus macaques (Macaca mulatta). Using concentrations of fecal etiocholanolone as proxy for circulating testosterone, we then conducted a field study on 46 free-ranging rhesus macaques of Cayo Santiago, Puerto Rico, to test if testosterone mediates the trade-off between reproductive transition (a higher chance of reproducing in the next year) and current reproduction (providing more care to current offspring). While the evidence for testosterone was weak, the testing of fecal immunoreactive estrogen metabolites suggested a potential role of estrogen in reproductive trade-offs. We found large individual differences in fecal etiocholanolone concentrations during the early postpartum period that were unexplained even after accounting for sociodemographic factors such as age and dominance rank. Further investigation is needed to understand this variation. Our study suggests that the actions of testosterone in females may not have evolved to fulfil the same role in primate reproductive transitions as it does in males, and we encourage more studies to consider the function of testosterone in reproductive behaviors and life history transitions in females of mammalian taxa.
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Affiliation(s)
- D Susie Lee
- Department of Anthropology, New York University, 25 Waverly Place, New York 10003, NY, USA; New York Consortium in Evolutionary Primatology, New York 10024, NY, USA.
| | - Tina Knittel
- Max Planck Institute for Evolutionary Anthropology, Interim Group Primatology, Deutscher Platz 6, 04103 Leipzig, Germany
| | - Tobias Deschner
- Max Planck Institute for Evolutionary Anthropology, Interim Group Primatology, Deutscher Platz 6, 04103 Leipzig, Germany
| | - Michael Heistermann
- Endocrinology Laboratory, German Primate Center, Leibniz Institute for Primate Research, Kellnerweg 4, 37077 Göttingen, Germany
| | - James P Higham
- Department of Anthropology, New York University, 25 Waverly Place, New York 10003, NY, USA; New York Consortium in Evolutionary Primatology, New York 10024, NY, USA
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5
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Social and sexual behaviors predict immune system activation, but not adrenocortical activation, in male rhesus macaques. Behav Ecol Sociobiol 2021. [DOI: 10.1007/s00265-021-03083-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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6
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Abstract
Female primates signal impending ovulation with a suite of sexual signals. Studies of these signals have focussed on visual, and to a lesser extent, acoustic signals, neglecting olfactory signals. We aimed to investigate the information content of female olfactory signals in captive olive baboons (Papio anubis) and relate these to the female fertile period. We studied eight adult females living in four groups at the CNRS Station de Primatologie, Rousset-sur-Arc, France. We used vaginal cytology to detect ovulation. We investigated the volatile component of odour signals using solid-phase microextraction and gas chromatography-mass spectrometry. We found a total of 74 volatile compounds, of which we tentatively identified 25, including several ketones, alcohols, aldehydes, terpenes, volatile fatty acids and hydrocarbons that have been identified in odour profiles of other primates. Our results show that vaginal odour intensity differs with sexual cycle stage suggesting that odour might play a role in signalling female baboon fertility. We found differences in vaginal odour between females living in all-female and in mixed sex groups but we could not distinguish the effects of group composition, female age and identity. This study of olfactory signalling improves our understanding of how female primates advertise their sexual receptivity.
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7
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Female fertile phase synchrony, and male mating and reproductive skew, in the crested macaque. Sci Rep 2021; 11:4251. [PMID: 33608592 PMCID: PMC7896048 DOI: 10.1038/s41598-021-81163-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 12/03/2020] [Indexed: 01/31/2023] Open
Abstract
High social status is the primary determinant of reproductive success among group-living male mammals. Primates living in multimale-multifemale groups show the greatest variation in the strength of this link, with marked variation in reproductive skew by male dominance among species, dependent on the degree of female fertile phase synchrony, and the number of competing males. Here, we present data on two groups of wild crested macaques (Macaca nigra), living in the Tangkoko Reserve, Sulawesi, Indonesia. We investigated male monopolization of fertile females in 31 cycles of 19 females, and genetic paternity of 14 offspring conceived during the study period. We show that female fertile phase synchrony was low, that females had few mating partners in their fertile phase, and that dominant males monopolized a high proportion of consortships and matings, resulting in marked and steep mating and reproductive skew. We conclude that female cycle asynchrony provides the opportunity for strong direct male-male competition in crested macaques, resulting in monopolization of females by dominant males, consistent with their marked sexual dimorphism. Our study provides a test of the underlying factors that determine the relative occurrence and strength of different mechanisms of sexual selection, and the phenotypes that evolve as a result.
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Higham JP. A comparative perspective on measures of cycle phase, and how they relate to cues, signals, and mating behavior: A commentary on. EVOL HUM BEHAV 2019. [DOI: 10.1016/j.evolhumbehav.2019.08.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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9
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Petersdorf M, Weyher AH, Kamilar JM, Dubuc C, Higham JP. Sexual selection in the Kinda baboon. J Hum Evol 2019; 135:102635. [PMID: 31421317 DOI: 10.1016/j.jhevol.2019.06.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 06/12/2019] [Accepted: 06/21/2019] [Indexed: 10/26/2022]
Abstract
Due to wide variation in the presence and degree of expression of a diverse suite of sexually-selected traits, the tribe Papionini represents an outstanding model for understanding how variation in sexual selection pressures and mechanisms leads to trait evolution. Here, we discuss the particular value of Papio as a model genus for studies of sexual selection, emphasizing the presence of multiple mating systems, and differences in the expression of sexually-selected traits among closely-related species. We draw particular attention to the Kinda baboon (Papio kindae), a comparatively less-studied baboon species, by providing a primer to Kinda baboon morphology, genetics, physiology, and behavior. Based on observations of large group sizes, combined with low degrees of sexual dimorphism and large relative testis size relative to other baboon species, we test the hypothesis that Kinda baboons have evolved under reduced direct, and increased indirect, male-male competition. We present the first long-term data on wild Kinda baboons in Zambia. Kinda baboon females show seasonal peaks in births and reproductive receptivity, and males exhibit a queing-rather than contest-based dominance acquisition with long alpha-male tenure lengths. We finish by making a number of explicit testable predictions about Kinda baboon sexual signals and behaviors, and suggest that Kinda baboons have potential to offer new insights into the selective environments that may have been experienced during homininization.
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Affiliation(s)
- Megan Petersdorf
- Department of Anthropology, New York University, New York, NY, 10003, USA.
| | - Anna H Weyher
- Department of Anthropology, University of Massachusetts Amherst, Amherst, MA 01002, USA
| | - Jason M Kamilar
- Department of Anthropology, University of Massachusetts Amherst, Amherst, MA 01002, USA
| | - Constance Dubuc
- Department of Anthropology, New York University, New York, NY, 10003, USA
| | - James P Higham
- Department of Anthropology, New York University, New York, NY, 10003, USA
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10
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Setchell JM. Sexual Selection and the differences between the sexes in Mandrills (Mandrillus sphinx). AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2016; 159:S105-29. [PMID: 26808101 DOI: 10.1002/ajpa.22904] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Sexual selection has become a major focus in evolutionary and behavioral ecology. It is also a popular research topic in primatology. I use studies of mandrills (Mandrillus sphinx), a classic example of extravagant armaments and ornaments in animals, to exemplify how a long-term, multidisciplinary approach that integrates field observations with laboratory methods can contribute to on-going theoretical debates in the field of sexual selection. I begin with a brief summary of the main concepts of sexual selection theory and the differences between the sexes. I then introduce mandrills and the study population and review mandrill life history, the ontogeny of sex differences, and maternal effects. Next, I focus on male-male competition and female choice, followed by the less well-studied questions of female-female competition and male choice. This review shows how different reproductive priorities lead to very different life histories and divergent adaptations in males and females. It demonstrates how broadening traditional perspectives on sexual selection beyond the ostentatious results of intense sexual selection on males leads to an understanding of more subtle and cryptic forms of competition and choice in both sexes and opens many productive avenues in the study of primate reproductive strategies. These include the potential for studies of postcopulatory selection, female intrasexual competition, and male choice. These studies of mandrills provide comparison and, I hope, inspiration for studies of both other polygynandrous species and species with mating systems less traditionally associated with sexual selection.
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Affiliation(s)
- Joanna M Setchell
- Department of Anthropology, Evolutionary Anthropology Research Group, Behaviour Ecology and Evolution Research (BEER) Centre, Durham University, Durham, DH1 3LE, UK
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11
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Higham JP. Field endocrinology of nonhuman primates: past, present, and future. Horm Behav 2016; 84:145-55. [PMID: 27469069 DOI: 10.1016/j.yhbeh.2016.07.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 07/11/2016] [Accepted: 07/12/2016] [Indexed: 01/29/2023]
Abstract
In the past few decades, research on nonhuman primate endocrinology has moved from the lab to the field, leading to a huge increase in both the breadth and depth of primate field studies. Here, I discuss the past, present, and future of primate field endocrinology. I review the history of the field, and go on to discuss methodological developments and the issues that they sometimes entail. Next, I consider ways in which we might conceptualize the role of hormones, and focus on the need to distinguish proximate from ultimate levels of explanation. Current potentially problematic issues in the field include: 1) an inability to obtain noninvasive measurements of Central Nervous System (CNS) rather than peripheral hormone concentrations; 2) research questions that become stuck (e.g., questions regarding sexual swelling expression mechanisms); 3) data dredging and post-hoc linking of hormones to any plausible variable, leading to a lack of clarity on their role in animal ecology and behavior. I finish by discussing several unanswered questions that might benefit from further research. These are how we might: 1) best obtain measurements for CNS hormone concentrations non-invasively; 2) measure hormone receptor expression alongside hormone concentrations; 3) consider the human endocrinology literature more thoroughly and perhaps take more multimarker approaches; 4) better consider the social environment, including audience and dyadic familiarity effects; and 5) apply our findings to conservation issues.
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Affiliation(s)
- James P Higham
- Dept. of Anthropology, New York University, 25 Waverly Place, New York, NY 10003.
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12
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Garcia C, Bercovitch F, Furuichi T, Huffman M, MacInstosh A, Rigaill L, Takeshita R, Shimizu K. Ten years of collaboration between France and Japan - Studies on reproduction in Japanese macaques. REVUE DE PRIMATOLOGIE 2016. [DOI: 10.4000/primatologie.2666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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13
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Douglas PH, Hohmann G, Murtagh R, Thiessen-Bock R, Deschner T. Mixed messages: wild female bonobos show high variability in the timing of ovulation in relation to sexual swelling patterns. BMC Evol Biol 2016; 16:140. [PMID: 27356506 PMCID: PMC4928307 DOI: 10.1186/s12862-016-0691-3] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 05/24/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The evolution of primate sexual swellings and their influence on mating strategies have captivated the interest of biologists for over a century. Across the primate order, variability in the timing of ovulation with respect to females' sexual swelling patterns differs greatly. Since sexual swellings typically function as signals of female fecundity, the temporal relation between ovulation and sexual swellings can impact the ability of males to pinpoint ovulation and thereby affect male mating strategies. Here, we used endocrine parameters to detect ovulation and examined the temporal relation between the maximum swelling phase (MSP) and ovulation in wild female bonobos (Pan paniscus). Data were collected at the Luikotale field site, Democratic Republic of Congo, spanning 36 months. Observational data from 13 females were used to characterise female swelling cycles (N = 70). Furthermore, we measured urinary oestrone and pregnanediol using liquid chromatography-tandem mass spectrometry, and used pregnanediol to determine the timing of ovulation in 34 cycles (N = 9 females). RESULTS We found that the duration of females' MSP was highly variable, ranging from 1 to 31 days. Timing of ovulation varied considerably in relation to the onset of the MSP, resulting in a very low day-specific probability of ovulation and fecundity across female cycles. Ovulation occurred during the MSP in only 52.9 % of the analysed swelling cycles, and females showed regular sexual swelling patterns in N = 8 swelling cycles where ovulation did not occur. These findings reveal that sexual swellings of bonobos are less reliable indicators of ovulation compared to other species of primates. CONCLUSIONS Female bonobos show unusual variability in the duration of the MSP and in the timing of ovulation relative to the sexual swelling signal. These data are important for understanding the evolution of sexual signals, how they influence male and female mating strategies, and how decoupling visual signals of fecundity from the periovulatory period may affect intersexual conflict. By prolonging the period during which males would need to mate guard females to ascertain paternity, the temporal variability of this signal may constrain mate-guarding efforts by male bonobos.
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Affiliation(s)
- Pamela Heidi Douglas
- Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D-04103, Leipzig, Germany.
| | - Gottfried Hohmann
- Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D-04103, Leipzig, Germany
| | - Róisín Murtagh
- Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D-04103, Leipzig, Germany
| | - Robyn Thiessen-Bock
- Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D-04103, Leipzig, Germany
- Faculty of Biology, Ludwig-Maximilians-University of Munich, Biocenter Großhaderner Str. 2, D-82152, Planegg-Martinsried, Germany
| | - Tobias Deschner
- Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D-04103, Leipzig, Germany
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14
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Habumuremyi S, Stephens C, Fawcett KA, Deschner T, Robbins MM. Endocrine assessment of ovarian cycle activity in wild female mountain gorillas (Gorilla beringei beringei). Physiol Behav 2016; 157:185-95. [PMID: 26875514 DOI: 10.1016/j.physbeh.2016.02.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 02/09/2016] [Accepted: 02/10/2016] [Indexed: 12/22/2022]
Abstract
Variability of fertility (i.e. number of births per female per year) has been reported in females of many primate species but only a few studies have explored the associated physiological and behavioral patterns. To investigate the proximate mechanisms of variability in fertility of wild female mountain gorillas (Gorilla beringei beringei), we quantified the occurrence of ovulation, matings, and successful pregnancies among females. We examined the profiles of immunoreactive pregnanediol-3-glucuronide (iPdG) for sixteen females (seven nulliparous and nine parous females, including one geriatric female; average sampling period for fecal sample collection and behavioral observations per female=175 days; SD=94 days, range=66-358 days) monitored by the staff of the Dian Fossey Gorilla Fund's Karisoke Research Center in Parc National des Volcans, Rwanda. We quantified ovarian cycles from iPdG profiles using an algorithm that we developed by adjusting the method of Kassam et al. (1996) to the characteristics of ovarian cycle profiles based on fecal hormone measurements. The mean length of ovarian cycles was 29±4 days (median: 28 days, N=13 cycles), similar to ovarian cycle lengths of other great apes and humans. As expected, we found that female mountain gorillas exhibit longer follicular phases (mean±SD: 21±3 days, N=13 cycles) than luteal phases (mean±SD: 8±3 days, N=13 cycles). We also found that the frequency of ovarian cycles was greater in parous females (i.e. 20 ovarian cycles across 44 periods of 28 days; 45.5%) than in nulliparous females (i.e. two ovarian cycles across 34 periods of 28 days; 6%). However, the frequency of days on which matings were observed did not differ significantly between parous and nulliparous females, nor between pregnant and non-pregnant females. Five pregnancies were detected with iPdG levels, but only three resulted in live births, indicating miscarriages of the other two. In sum, this study provides information on the underlying endocrine patterns of variation in fertility depending on parity, mating behavior, and pregnancy success in a critically endangered great ape.
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Affiliation(s)
- Sosthene Habumuremyi
- Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany; Dian Fossey Gorilla Fund International, 800 Cherokee Ave SE, Atlanta, GA 30315-1440, USA; Institut d'Enseignement Supérieur de Ruhengeri (INES-Ruhengeri), Musanze, North Province, Rwanda.
| | - Colleen Stephens
- Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | - Katie A Fawcett
- Dian Fossey Gorilla Fund International, 800 Cherokee Ave SE, Atlanta, GA 30315-1440, USA
| | - Tobias Deschner
- Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | - Martha M Robbins
- Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
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15
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Goffe AS, Zinner D, Fischer J. Sex and friendship in a multilevel society: behavioural patterns and associations between female and male Guinea baboons. Behav Ecol Sociobiol 2016; 70:323-336. [PMID: 26900211 PMCID: PMC4748025 DOI: 10.1007/s00265-015-2050-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 12/02/2015] [Accepted: 12/07/2015] [Indexed: 11/30/2022]
Abstract
One key question in social evolution is the identification of factors that promote the formation and maintenance of stable bonds between females and males beyond the mating context. Baboons lend themselves to examine this question, as they vary in social organisation and male-female association patterns. We report the results from the first systematic observations of individually identified wild female Guinea baboons. Guinea baboons live in a multilevel society with female-biased dispersal. Although several males could be found within 5 m of females, each female chiefly associated with one "primary" male at the 2 m distance. Social interactions occurred predominantly with the primary male, and female reproductive state had little influence on interaction patterns. The number of females per primary male varied from 1 to 4. During the 17-month study period, half of the females transferred between different males one or multiple times. A subset of females maintained weaker affiliative nonsexual relationships with other "secondary" males. Units composed of primary males with females, and occasional secondary males, apparently form the core of the Guinea baboon society. The social organisation and mating patterns of Guinea and hamadryas baboons may have a common evolutionary origin, despite notable differences in relationship quality. Specifically, Guinea baboon females appear to have greater leverage in their association patterns than hamadryas baboon females. Although we cannot yet explain the lack of overt male control over females, results generally support the notion that phylogenetic descent may play an important role in shaping social systems.
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Affiliation(s)
- Adeelia S. Goffe
- Cognitive Ethology Laboratory, German Primate Center, Kellnerweg 4, 37077 Göttingen, Germany
| | - Dietmar Zinner
- Cognitive Ethology Laboratory, German Primate Center, Kellnerweg 4, 37077 Göttingen, Germany
| | - Julia Fischer
- Cognitive Ethology Laboratory, German Primate Center, Kellnerweg 4, 37077 Göttingen, Germany
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16
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Sonnweber RS, Massen JJM, Fitch WT. Post-copulatory grooming: a conditional mating strategy? Behav Ecol Sociobiol 2015. [DOI: 10.1007/s00265-015-1987-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Tiddi B, Wheeler BC, Heistermann M. Female behavioral proceptivity functions as a probabilistic signal of fertility, not female quality, in a New World primate. Horm Behav 2015; 73:148-55. [PMID: 26188948 DOI: 10.1016/j.yhbeh.2015.07.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Revised: 07/09/2015] [Accepted: 07/11/2015] [Indexed: 11/22/2022]
Abstract
The interests of males and females in mating contexts often conflict, and identifying the information conveyed by sexual signals is central to understanding how signalers manage such conflicts. Research into the information provided by female primate sexual signals has focused on exaggerated anogenital swellings as either reliable-indicators of reproductive quality (reliable-indicator hypothesis) or probabilistic signals of fertility (graded-signal hypothesis). While these morphological signals are mostly confined to catarrhine primates, these hypotheses are potentially widely applicable across primates, but have not been tested in taxa that lack such morphological signals. Here, we tested these hypotheses in wild black capuchins (Sapajus nigritus), a species in which females lack morphological sexual signals but produce conspicuous behavioral estrous displays. Specifically, we examined the proportion of time different females spent producing these signals with respect to measures of female quality (dominance rank, parity, age-related fecundity and cycle type) and in relation to the timing of fertility, as determined by analysis of fecal progesterone. Time spent displaying did not vary across females based on measures of female quality, but increased with the approach of ovulation. Further, male mating effort varied according to the timing of female fertility. Proceptive behaviors in this species thus meet predictions of the graded-signal hypothesis, providing the first support for this hypothesis based solely on behavioral signals.
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Affiliation(s)
- Barbara Tiddi
- Cognitive Ethology Laboratory, German Primate Center, Goettingen, Kellnerweg 4, 37077, Germany; Courant Research Centre "Evolution of Social Behaviour", University of Goettingen, Goettingen, Kellnerweg 7, 37077, Germany; Instituto de Biologia Subtropical, Universidad Autonoma de Misiones, Puerto Iguazú, Bertoni 85, 3370, Argentina.
| | - Brandon C Wheeler
- Cognitive Ethology Laboratory, German Primate Center, Goettingen, Kellnerweg 4, 37077, Germany; School of Anthropology & Conservation, University of Kent, Canterbury, United Kingdom
| | - Michael Heistermann
- Endocrinology Laboratory, German Primate Center, Goettingen, Kellnerweg 4, 37077, Germany
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18
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Fitzpatrick CL, Altmann J, Alberts SC. Exaggerated sexual swellings and male mate choice in primates: testing the reliable indicator hypothesis in the Amboseli baboons. Anim Behav 2015; 104:175-185. [PMID: 26752790 PMCID: PMC4704114 DOI: 10.1016/j.anbehav.2015.03.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The paradigm of competitive males vying to influence female mate choice has been repeatedly upheld, but, increasingly, studies also report competitive females and choosy males. One female trait that is commonly proposed to influence male mate choice is the exaggerated sexual swelling displayed by females of many Old World primate species. The reliable indicator hypothesis posits that females use the exaggerated swellings to compete for access to mates, and that the swellings advertise variation in female fitness. We tested the two main predictions of this hypothesis in a wild population of baboons (Papio cynocephalus). First, we examined the effect of swelling size on the probability of mate-guarding ('consortship') by the highest-ranking male and the behavior of those males that trailed consorshipts ('follower males'). Second, we asked whether a female's swelling size predicted several fitness measures. We found that high-ranking males do not prefer females with larger swellings (when controlling for cycle number and conception) and that females with larger swellings did not have higher reproductive success. Our study-the only complete test of the reliable indicator hypothesis in a primate population-rejects the idea that female baboons compete for mates by advertising heritable fitness differences. Furthermore, we found unambiguous evidence that males biased their mating decisions in favor of females who had experienced more sexual cycles since their most recent pregnancy. Thus, rather than tracking the potential differences in fitness between females, male baboons appear to track and target the potential for a given reproductive opportunity to result in fertilization.
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Affiliation(s)
| | - Jeanne Altmann
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ, USA; National Museums of Kenya, Institute of Primate Research, Nairobi, Kenya
| | - Susan C Alberts
- Department of Biology, Duke University, Durham, NC, USA; National Museums of Kenya, Institute of Primate Research, Nairobi, Kenya
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19
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Neunuebel JP, Taylor AL, Arthur BJ, Egnor SER. Female mice ultrasonically interact with males during courtship displays. eLife 2015; 4:e06203. [PMID: 26020291 PMCID: PMC4447045 DOI: 10.7554/elife.06203] [Citation(s) in RCA: 132] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Accepted: 05/06/2015] [Indexed: 01/24/2023] Open
Abstract
During courtship males attract females with elaborate behaviors. In mice, these displays include ultrasonic vocalizations. Ultrasonic courtship vocalizations were previously attributed to the courting male, despite evidence that both sexes produce virtually indistinguishable vocalizations. Because of this similarity, and the difficulty of assigning vocalizations to individuals, the vocal contribution of each individual during courtship is unknown. To address this question, we developed a microphone array system to localize vocalizations from socially interacting, individual adult mice. With this system, we show that female mice vocally interact with males during courtship. Males and females jointly increased their vocalization rates during chases. Furthermore, a female's participation in these vocal interactions may function as a signal that indicates a state of increased receptivity. Our results reveal a novel form of vocal communication during mouse courtship, and lay the groundwork for a mechanistic dissection of communication during social behavior.
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Affiliation(s)
- Joshua P Neunuebel
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, United States
- Department of Psychological and Brain Sciences, University of Delaware, Newark, United States
| | - Adam L Taylor
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, United States
| | - Ben J Arthur
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, United States
| | - SE Roian Egnor
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, United States
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20
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Roberts SJ, Nikitopoulos E, Cords M. Factors affecting low resident male siring success in one-male groups of blue monkeys. Behav Ecol 2014. [DOI: 10.1093/beheco/aru060] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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“Following,” an Alternative Mating Strategy Used by Male Olive Baboons (Papio hamadryas anubis): Quantitative Behavioral and Functional Description. INT J PRIMATOL 2014. [DOI: 10.1007/s10764-013-9743-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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22
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Ostner J, Vigilant L, Bhagavatula J, Franz M, Schülke O. Stable heterosexual associations in a promiscuous primate. Anim Behav 2013. [DOI: 10.1016/j.anbehav.2013.07.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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23
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24
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Ten unanswered questions in multimodal communication. Behav Ecol Sociobiol 2013; 67:1523-1539. [PMID: 23956487 PMCID: PMC3742419 DOI: 10.1007/s00265-013-1565-y] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 04/04/2013] [Accepted: 04/16/2013] [Indexed: 11/19/2022]
Abstract
The study of multimodal communication has become an active and vibrant field. This special issue of Behavioral Ecology and Sociobiology brings together new developments in this rapidly expanding area. In this final contribution to the special issue, I look to the future and discuss ten questions in need of further work, touching on issues ranging from theoretical modeling and the evolution of behavior to molecular mechanisms and the development of behavior. In particular, I emphasize that the use of multimodal communication allows animals to switch between sensory channels when one channel becomes too noisy, and suggest that a better understanding of this process may help us both to understand the evolution of multisensory signaling and to predict the success of species facing environmental changes that affect signaling channels, such as urbanization and climate change. An expanded section is included on the effects of climate change on animal communication across sensory channels, urging researchers to pursue this topic due to the rapidity with which the environment is currently transforming.
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25
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Kalbitzer U, Heistermann M. Long‐term storage effects in steroid metabolite extracts from baboon (
Papio
sp.) faeces – a comparison of three commonly applied storage methods. Methods Ecol Evol 2013. [DOI: 10.1111/2041-210x.12054] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Urs Kalbitzer
- Cognitive Ethology Laboratory German Primate Center (DPZ) Kellnerweg 4 37077 Göttingen Germany
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Rigaill L, Higham JP, Lee PC, Blin A, Garcia C. Multimodal sexual signaling and mating behavior in olive baboons (Papio anubis). Am J Primatol 2013; 75:774-87. [PMID: 23592393 DOI: 10.1002/ajp.22154] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 03/04/2013] [Accepted: 03/04/2013] [Indexed: 02/03/2023]
Abstract
In primate species, mating decisions seem to be based on multiple signal elements with different roles in the signaling of female reproductive status. Whereas some primate signals are relatively well described (e.g., sexual swellings and copulation calls), studies that simultaneously assess visual, auditory, behavioral, and olfactory cues as signals of reproductive state are rarely undertaken. We used data on variation in sexual behaviors and sexual swellings in relation to the fertile period (estimated from the date of swelling detumescence) from a troop of semi-free ranging olive baboons (Papio anubis) to assess how different signals influence patterns of mate choice. Using an objective and quantitative measure of swelling size and color, along with detailed data on sexual behaviors from 13 cycles of nine adult females, we found that fine-scale variation in sexual swelling size, female behavior and copulation call rates could advertise the beginning of the fertile phase whereas swelling color did not. Rates of olfactory inspections by males also increased during the fertile phase, suggesting that olfactory signals were of interest to males and may contain information about ovulation. There was no relationship between female characteristics (age and rank) and the expression of sexual signals, except for proceptive behaviors which increased with female rank. Males displayed more sexual behaviors such as approaches and holding and tended to direct more ejaculatory mounts during the fertile phase. All together, we suggest that whereas all males could have information concerning the timing of ovulation through female proceptive behaviors and swelling size, consorting males may have access to additional signals (olfactory cues). Sexual communication in olive baboons is consistent with a multimodal framework for fertility signaling, potentially allowing males and females to establish different mating strategies. The possible selective pressures leading to multi-modal signaling are discussed.
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Affiliation(s)
- Lucie Rigaill
- Laboratoire de Dynamique de l'Evolution Humaine, CNRS UPR 2147, Paris, France
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27
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Clutton-Brock T, Huchard E. Social competition and its consequences in female mammals. J Zool (1987) 2013. [DOI: 10.1111/jzo.12023] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
| | - E. Huchard
- Department of Zoology; University of Cambridge; Cambridge UK
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28
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Higham JP, Heistermann M, Maestripieri D. The endocrinology of male rhesus macaque social and reproductive status: a test of the challenge and social stress hypotheses. Behav Ecol Sociobiol 2013; 67:19-30. [PMID: 24634561 PMCID: PMC3950204 DOI: 10.1007/s00265-012-1420-6] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Social status primarily determines male mammalian reproductive success, and hypotheses on the endocrinology of dominance have stimulated unprecedented investigation of its costs and benefits. Under the challenge hypothesis, male testosterone levels rise according to competitive need, while the social stress hypothesis predicts glucocorticoid (GC) rises in high ranking individuals during social unrest. Periods of social instability in group-living primates, primarily in baboons, provide evidence for both hypotheses, but data on social instability in seasonally-breeding species with marked social despotism but lower reproductive skew are lacking. We tested these hypotheses in seasonally-breeding rhesus macaques on Cayo Santiago, Puerto Rico. We documented male fecal GC and androgen levels over a 10 month period in relation to rank, age, natal status and group tenure length, including during a socially unstable period in which coalitions of lower-ranked males attacked higher-ranked males. Androgen but not GC levels rose during the mating season; older males had lower birth season levels but underwent a greater inter-season rise than younger males. Neither endocrine measure was related to rank except during social instability, when higher ranked individuals had higher and more variable levels of both. High ranking male targets had the highest GC levels of all males when targeted, and also had high and variable GC and androgen levels across the instability period. Our results provide evidence for both the challenge and social stress hypotheses.
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Affiliation(s)
- James P Higham
- Institute for Mind and Biology, University of Chicago, 940 East 57 Street, Chicago, IL 60637, USA ; Department of Anthropology, New York University, 25 Waverly Place, New York, NY 10003, USA
| | - Michael Heistermann
- Reproductive Biology Unit, German Primate Centre, Kellnerweg 4, 37077, Göttingen, Germany
| | - Dario Maestripieri
- Institute for Mind and Biology, University of Chicago, 940 East 57 Street, Chicago, IL 60637, USA
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29
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Young C, Majolo B, Heistermann M, Schülke O, Ostner J. Male mating behaviour in relation to female sexual swellings, socio-sexual behaviour and hormonal changes in wild Barbary macaques. Horm Behav 2013; 63:32-9. [PMID: 23146839 DOI: 10.1016/j.yhbeh.2012.11.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 11/02/2012] [Accepted: 11/03/2012] [Indexed: 11/25/2022]
Abstract
In many cercopithecine primates females display probabilistic cues of fertility to indicate the periovulatory period to males. These cues may include female behaviour, acoustic signals, and morphological signs such as the anogenital swelling. However, the extent to which males can utilise this information varies between species. We describe male sexual behaviour in relation to changes in anogenital swelling size, timing of ovulation and female socio-sexual behaviour in wild Barbary macaques (Macaca sylvanus). We further compare male sexual behaviour during conception and post-conception cycles to evaluate if males differentiate between these qualitatively different cycle types. Our results show that during conception cycles male mating behaviour was concentrated around the fertile phase implying that males inferred information from more than swelling size alone. Male mating frequency increased in line with female socio-sexual behaviour, namely female presenting and the frequency of copulations with copulation calls. Most strikingly our results show that males invested equally in mating during fertile and non-fertile, i.e. post-conception, maximum swelling phases. Whether post-conception swellings were merely a result of changes in hormone concentrations during pregnancy or part of a female reproductive strategy remains elusive. In sum, this study adds to the body of research on the evolution of female sexual signals and how males may infer information from these cues.
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Affiliation(s)
- Christopher Young
- Primate Social Evolution Group, Courant Research Centre Evolution of Social Behaviour, Georg-August University Göttingen, Kellnerweg 6, 37077, Germany.
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30
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Higham JP, Heistermann M, Saggau C, Agil M, Perwitasari-Farajallah D, Engelhardt A. Sexual signalling in female crested macaques and the evolution of primate fertility signals. BMC Evol Biol 2012; 12:89. [PMID: 22708622 PMCID: PMC3483276 DOI: 10.1186/1471-2148-12-89] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Accepted: 06/18/2012] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Female signals of fertility have evolved in diverse taxa. Among the most interesting study systems are those of multimale multifemale group-living primates, where females signal fertility to males through multiple signals, and in which there is substantial inter-specific variation in the composition and reliability of such signals. Among the macaques, some species display reliable behavioural and/or anogenital signals while others do not. One cause of this variation may be differences in male competitive regimes: some species show marked sexual dimorphism and reproductive skew, with males fighting for dominance, while others show low dimorphism and skew, with males queuing for dominance. As such, there is variation in the extent to which rank is a reliable proxy for male competitiveness, which may affect the extent to which it is in females' interest to signal ovulation reliably. However, data on ovulatory signals are absent from species at one end of the macaque continuum, where selection has led to high sexual dimorphism and male reproductive skew. Here we present data from 31 cycles of 19 wild female crested macaques, a highly sexually dimorphic species with strong mating skew. We collected measures of ovarian hormone data from faeces, sexual swelling size from digital images, and male and female behaviour. RESULTS We show that both sexual swelling size and female proceptivity are graded-signals, but relatively reliable indicators of ovulation, with swelling size largest and female proceptive behaviours most frequent around ovulation. Sexual swelling size was also larger in conceptive cycles. Male mating behaviour was well timed to female ovulation, suggesting that males had accurate information about this. CONCLUSION Though probabilistic, crested macaque ovulatory signals are relatively reliable. We argue that in species where males fight over dominance, male dominance rank is surrogate for competitiveness. Under these circumstances it is in the interest of females to increase paternity concentration and assurance in dominants beyond levels seen in species where such competition is less marked. As such, we suggest that it may in part be variation in male competitive regimes that leads to the evolution of fertility signalling systems of different reliability.
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Affiliation(s)
- James P Higham
- Jr Research Group on Sexual Selection, Reproductive Biology Unit, German Primate Centre, Kellnerweg 4, Göttingen, 37077, Germany
- Department of Anthropology, New York University, 25 Waverly Place, New York, NY, 10003, USA
| | - Michael Heistermann
- Reproductive Biology Unit, German Primate Centre, Kellnerweg 4, Göttingen, 37077, Germany
| | - Carina Saggau
- Jr Research Group on Sexual Selection, Reproductive Biology Unit, German Primate Centre, Kellnerweg 4, Göttingen, 37077, Germany
| | - Muhammad Agil
- Faculty of Veterinary Medicine, Bogor Agricultural University, Bogor, Indonesia
| | - Dyah Perwitasari-Farajallah
- Primate Research Center, Bogor Agricultural University, Bogor, Indonesia
- Faculty of Mathematics & Natural Sciences, Bogor Agricultural University, Bogor, Indonesia
| | - Antje Engelhardt
- Jr Research Group on Sexual Selection, Reproductive Biology Unit, German Primate Centre, Kellnerweg 4, Göttingen, 37077, Germany
- Faculty of Mathematics & Natural Sciences, Bogor Agricultural University, Bogor, Indonesia
- Courant Research Centre “Evolution of Social Behaviour”, Kellnerweg 6, Göttingen, 37077, Germany
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31
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Dubuc C, Muniz L, Heistermann M, Widdig A, Engelhardt A. Do males time their mate-guarding effort with the fertile phase in order to secure fertilisation in Cayo Santiago rhesus macaques? Horm Behav 2012; 61:696-705. [PMID: 22449655 PMCID: PMC3559102 DOI: 10.1016/j.yhbeh.2012.03.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Revised: 03/08/2012] [Accepted: 03/11/2012] [Indexed: 11/28/2022]
Abstract
In contrast to most mammalian species, female sexual activity is not limited to the fertile phase of the ovarian cycle in anthropoid primates, which has long been proposed to conceal the timing of ovulation to males. It is now generally believed that females are still most attractive during the fertile phase, leading to high-ranking males successfully mate-guarding them specifically during this period. While studies conducted in species exhibiting exaggerated sexual swellings (probabilistic signal of the fertile phase) have generally supported this hypothesis, mixed support comes from others. Here, we investigated whether high-ranking males timed mate-guarding effort towards female fertile phases in rhesus macaques (Macaca mulatta). In this species, adult females do not exhibit sexual swellings, but undergo facial skin colour variation, an alternative oestrogen-dependent graded-signal of female reproductive status. We collected behavioural, hormonal and genetic paternity data during two mating seasons for one group of the free-ranging population of Cayo Santiago. Our results show that mate-guarding by top-ranking males did not completely cover the entire female fertile phase and that this tactic accounted for only 30-40% of all fertilisations observed. Males tended to prolong mate-guarding into the luteal phase (null probability of fertilisation), which mirrors the pattern of male attraction to female facial colour reported in an earlier study. These findings suggest that males may have limited knowledge regarding the exact timing of females' fertile phase in rhesus macaques, which presumably allows females to gain more control over reproduction relative to other anthropoid primate species.
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Affiliation(s)
- Constance Dubuc
- Junior Research Group of Primate Sexual Selection, Reproductive Biology Unit, German Primate Center, Kellnerweg 4, 37077 Göttingen, Germany.
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32
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LU AMY, BEEHNER JACINTAC, CZEKALA NANCYM, BORRIES CAROLA. Juggling Priorities: Female Mating Tactics in Phayre's Leaf Monkeys. Am J Primatol 2012; 74:471-81. [DOI: 10.1002/ajp.22004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 11/30/2011] [Accepted: 12/01/2011] [Indexed: 11/10/2022]
Affiliation(s)
| | | | | | - CAROLA BORRIES
- Department of Anthropology; Stony Brook University; Stony Brook; New York
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33
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Stockley P, Bro-Jørgensen J. Female competition and its evolutionary consequences in mammals. Biol Rev Camb Philos Soc 2011; 86:341-66. [DOI: 10.1111/j.1469-185x.2010.00149.x] [Citation(s) in RCA: 307] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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34
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Estrogen and Progestogen Correlates of the Structure of Female Copulation Calls in Semi-Free-Ranging Barbary Macaques (Macaca sylvanus). INT J PRIMATOL 2011; 32:992-1006. [PMID: 21892238 PMCID: PMC3139882 DOI: 10.1007/s10764-011-9517-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2010] [Accepted: 02/15/2011] [Indexed: 02/02/2023]
Abstract
Females of many Old World primates produce conspicuous vocalizations in combination with copulations. Indirect evidence exists that in Barbary macaques (Macaca sylvanus), the structure of these copulation calls is related to changes in reproductive hormone levels. However, the structure of these calls does not vary significantly around the timing of ovulation when estrogen and progestogen levels show marked changes. We here aimed to clarify this paradox by investigating how the steroid hormones estrogen and progesterone are related to changes in the acoustic structure of copulation calls. We collected data on semi-free-ranging Barbary macaques in Gibraltar and at La Forêt des Singes in Rocamadour, France. We determined estrogen and progestogen concentrations from fecal samples and combined them with a fine-grained structural analysis of female copulation calls (N = 775 calls of 11 females). Our analysis indicates a time lag of 3 d between changes in fecal hormone levels, adjusted for the excretion lag time, and in the acoustic structure of copulation calls. Specifically, we found that estrogen increased the duration and frequency of the calls, whereas progestogen had an antagonistic effect. Importantly, however, variation in acoustic variables did not track short-term changes such as the peak in estrogen occurring around the timing of ovulation. Taken together, our results help to explain why female Barbary macaque copulation calls are related to changes in hormone levels but fail to indicate the fertile phase.
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35
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Interactions Between Third Parties and Consortship Partners in Tonkean Macaques (Macaca tonkeana). INT J PRIMATOL 2011. [DOI: 10.1007/s10764-011-9496-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Newton-Fisher NE, Thompson ME, Reynolds V, Boesch C, Vigilant L. Paternity and social rank in wild chimpanzees (Pan troglodytes) from the Budongo Forest, Uganda. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2010; 142:417-28. [PMID: 20033921 DOI: 10.1002/ajpa.21241] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We analyzed patterns of paternity and male dominance rank in the Sonso community of wild East African chimpanzees (Pan troglodytes schweinfurthii) in the Budongo Forest, Uganda. Our major objective was to determine whether and how social rank influenced paternity success. We successfully genotyped 52 individuals at up to nine microsatellite loci, using DNA extracted from fecal samples. Of 24 offspring analyzed, we identified sires for 21. Paternity success was significantly correlated with social rank, with alpha males siring a disproportionate number of offspring. However, both middle- and low-ranking males also fathered offspring, and the priority-of-access model provided a relatively poor prediction of which males would be successful and under what circumstances. The concentration of paternities among only seven males and the tendency for high-ranking males to sire offspring of multiparous females suggest that both individual variation in male quality and the resource value of particular females may be mediating factors. In comparison with other chimpanzee studies, our results support the hypothesis that larger male cohort size reduces the ability of the alpha male to monopolize females, though within our study, male number did not affect the success of the alpha. Successful sires were not necessarily those who achieved the highest mating success with the females whose offspring they sired, but were those who demonstrated higher investment by spending significantly more time in association with these females. Finally, we estimate extra-group paternity at 0-5%, supporting other evidence that the community serves as the primary reproductive unit in chimpanzees.
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Higham JP, Brent LJN, Dubuc C, Accamando AK, Engelhardt A, Gerald MS, Heistermann M, Stevens M. Color signal information content and the eye of the beholder: a case study in the rhesus macaque. Behav Ecol 2010; 21:739-746. [PMID: 22475874 PMCID: PMC2892627 DOI: 10.1093/beheco/arq047] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2009] [Revised: 01/31/2010] [Accepted: 03/14/2010] [Indexed: 11/12/2022] Open
Abstract
Animal coloration has provided many classical examples of both natural and sexual selection. Methods to study color signals range from human assessment to models of receiver vision, with objective measurements commonly involving spectrometry or digital photography. However, signal assessment by a receiver is not objective but linked to receiver perception. Here, we use standardized digital photographs of female rhesus macaque (Macaca mulatta) face and hindquarter regions, combined with estimates of the timing of the female fertile phase, to assess how color varies with respect to this timing. We compare objective color measures (camera sensor responses) with models of rhesus vision (retinal receptor stimulation and visual discriminability). Due to differences in spectral separation between camera sensors and rhesus receptors, camera measures overestimated color variation and underestimated luminance variation compared with rhesus macaques. Consequently, objective digital camera measurements can produce statistically significant relationships that are probably undetectable to rhesus macaques, and hence biologically irrelevant, while missing variation in the measure that may be relevant. Discrimination modeling provided results that were most meaningful (as they were directly related to receiver perception) and were easiest to relate to underlying physiology. Further, this gave new insight into the function of such signals, revealing perceptually salient signal luminance changes outside of the fertile phase that could potentially enhance paternity confusion. Our study demonstrates how, even for species with similar visual systems to humans, models of vision may provide more accurate and meaningful information on the form and function of visual signals than objective color measures do.
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Affiliation(s)
- James P Higham
- Institute for Mind and Biology, University of Chicago, 940 East 57th Street, Chicago, IL 60637, USA
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Reproductive and Life History Parameters of Wild Female Macaca assamensis. INT J PRIMATOL 2010; 31:501-517. [PMID: 20651906 PMCID: PMC2890986 DOI: 10.1007/s10764-010-9409-3] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2009] [Accepted: 11/26/2009] [Indexed: 10/26/2022]
Abstract
Information on basic reproductive parameters and life-history traits is crucial for the understanding of primate evolution, ecology, social behavior, and reproductive strategies. Here, we report 4 yr of data on reproductive and life-history traits for wild female Assamese macaques (Macaca assamensis) at Phu Khieo Wildlife Sanctuary, northeastern Thailand. During 2 consecutive reproductive seasons, we investigated reproductive behavior and sexual swelling size in 16 females and collected 1832 fecal samples. Using enzyme immunoassays, we measured fecal estrogen and progesterone metabolites to assess ovarian activity and timing of ovulation and to ascertain conceptions and pregnancies. Timing of reproduction was strictly seasonal (births: April-July, 86% in April-June, 4 yr, n = 29; conceptions: October-February, 65% in December-January, 2 yr, n = 17). Females showed no cyclic ovarian activity outside the mating season and conceived in their first or second cycle (mean: 1.2 cycles to conception, n = 13). Gestation length was on average 164.2 d (range: 158-170, n = 10), and females had their first infant at an age of 5 yr (n = 4). Interbirth intervals were bimodally distributed, with females giving birth on average every 13.9 or 23.2 mo. Shorter interbirth intervals were linked to early parturition within the birth season. Most females displayed subcaudal sexual swellings which, however, did not reliably indicate female reproductive status or fertility. Overall, our results fall within the range of findings reported for other macaque species. These results thus add to the growing body of information available for wild macaques, facilitating comparative studies for a better understanding of interspecific differences in social and reproductive patterns.
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Huchard E, Alvergne A, Féjan D, Knapp LA, Cowlishaw G, Raymond M. More than friends? Behavioural and genetic aspects of heterosexual associations in wild chacma baboons. Behav Ecol Sociobiol 2009. [DOI: 10.1007/s00265-009-0894-3] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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40
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Garcia C, Shimizu K, Huffman M. Relationship between sexual interactions and the timing of the fertile phase in captive female Japanese macaques (Macaca fuscata). Am J Primatol 2009; 71:868-79. [DOI: 10.1002/ajp.20717] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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41
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Daspre A, Heistermann M, Hodges JK, Lee PC, Rosetta L. Signals of female reproductive quality and fertility in colony-living baboons (Papio h. anubis) in relation to ensuring paternal investment. Am J Primatol 2009; 71:529-38. [PMID: 19373878 DOI: 10.1002/ajp.20684] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The fitness of a female's offspring depends cruicially on the traits, genetic and paternal, that the father contributes. As such, females may either have an interest in behaviorally choosing the highest-quality male, or in reliably signaling their fertility status to males. Combining hormonal data on a female's ovulatory fertile window with a behavioral context, we suggest that captive female olive baboons (Papio h. anubis) provide fathers with reliable signals of their fertile period. One signal, the maximum anogenital swelling (AGA), typically coincided with a 4-day fertile window of ovulation, which occurred 2-3 days prior to deturgescence. As expected from previous studies, AGA swelling indicated general attractiveness to males, and males attended to the relative attractiveness of females. Males approached and copulated with females significantly more often during the 4-day window around ovulation, irrespective of the absolute swelling stage. The two adult males present in the group were both able to copulate with consistent partners as at least two cycling females were available in most months; the dominant male was more selective about the timing of his copulations close to ovulation during the maximal swelling phase. Females with ovulatory but nonconceptive cycles were less attractive to males, especially during their maximal AGA swelling phase.
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Affiliation(s)
- Agnès Daspre
- Laboratoire de Dynamique de l'Evolution Humaine, CNRS UPR 2147, Paris, France
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Sexual Skin Color Contains Information About the Timing of the Fertile Phase in Free-ranging Macaca mulatta. INT J PRIMATOL 2009. [DOI: 10.1007/s10764-009-9369-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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43
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Huchard E, Courtiol A, Benavides JA, Knapp LA, Raymond M, Cowlishaw G. Can fertility signals lead to quality signals? Insights from the evolution of primate sexual swellings. Proc Biol Sci 2009; 276:1889-97. [PMID: 19324772 PMCID: PMC2674499 DOI: 10.1098/rspb.2008.1923] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The sexual swellings of female primates have generated a great deal of interest in evolutionary biology. Two hypotheses recently proposed to elucidate their functional significance argue that maximal swelling size advertises either female fertility within a cycle or female quality across cycles. Published evidence favours the first hypothesis, and further indicates that larger swellings advertise higher fertility between cycles. If so, a male preference for large swellings might evolve, driving females to use swellings as quality indicators, as proposed by the second hypothesis. In this paper, we explore this possibility using a combination of empirical field data and mathematical modelling. We first test and find support for three key predictions of the female-quality hypothesis in wild chacma baboons (Papio ursinus): (i) inter-individual differences in swelling size are maintained across consecutive cycles, (ii) females in better condition have larger swellings and higher reproductive success, and (iii) males preferentially choose females with large swellings. We then develop an individual-based simulation model that indicates that females producing larger swellings can achieve higher mating success even when female-female competition is low and within-female variance in the trait is high. Taken together, our findings show that once sexual swellings have evolved as fertility signals, they might, in certain socio-sexual systems, be further selected to act as quality signals. These results, by reconciling two hypotheses, help to clarify the processes underlying sexual swelling evolution. More generally, our findings suggest that mate choice for direct benefits (fertility) can lead to indirect benefits (good genes).
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Affiliation(s)
- Elise Huchard
- CNRS-Institut des Sciences de l'Evolution, Université Montpellier 2, Place Eugène Bataillon, CC 065, 34 095 Montpellier Cedex 5, France.
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