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	Author	Stueckle, S.; Zinner, D.
	Title	To follow or not to follow: decision making and leadership during the morning departure in chacma baboons			Type	Journal Article
	Year	2008	Publication	Animal Behaviour.	Abbreviated Journal	Anim. Behav.
	Volume	75	Issue	6	Pages	1995-2004
	Keywords	chacma baboon; collective movement; consensus; decision making; leadership; Papio hamadryas ursinus
	Abstract	To benefit from group living, group members need to keep the group cohesive by coordinating time and direction of travelling. Self-organization and leadership are two means of coordination and two types of decision can be made on the group level: combined and consensus. We studied the initiation process of group movements during the morning departure of a group of chacma baboons, Papio hamadryas ursinus, from its sleeping site in De Hoop Nature Reserve, South Africa. Findings from other female-bonded primate groups led us to hypothesize that females should play a major role in the decision-making process. Approximately 75% of the adults made a start attempt, with 62 of 92 attempts being by males. There was no sex difference in the probability of being successful when initiating an attempt. Lactating females initiated fewer than pregnant or cycling females. Thus, at least for this group of chacma baboons, leadership appeared to be distributed and the decision about the timing of departure and travel direction seemed to be a partially shared consensus decision with adult males contributing more to the decision outcome, with a slightly more prominent role of the dominant male. Our results do not support the [`]leading females' hypothesis. No behavioural patterns that might serve as specialized signals leading to a more successful recruitment of other group members were observed. The departure process appeared to be coordinated merely through individuals setting an example by moving off.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0003-3472	ISBN		Medium
	Area		Expedition		Conference
	Notes				Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5130
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	Author	Seyfarth, R.M.; Cheney, D.L.; Bergman, T.J.
	Title	Primate social cognition and the origins of language			Type	Journal Article
	Year	2005	Publication	Trends in Cognitive Sciences	Abbreviated Journal	Trends. Cognit. Sci.
	Volume	9	Issue	6	Pages	264-266
	Keywords	Animals; Cognition; Humans; Language; Papio; Psychological Theory; Social Behavior; *Social Perception
	Abstract	Are the cognitive mechanisms underlying language unique, or can similar mechanisms be found in other domains? Recent field experiments demonstrate that baboons' knowledge of their companions' social relationships is based on discrete-valued traits (identity, rank, kinship) that are combined to create a representation of social relations that is hierarchically structured, open-ended, rule-governed, and independent of sensory modality. The mechanisms underlying language might have evolved from the social knowledge of our pre-linguistic primate ancestors.
	Address	Departments of Biology and Psychology, University of Pennsylvania, Philadelphia, PA 19104, USA. seyfarth@psych.upenn.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1364-6613	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:15925802			Approved	no
	Call Number	refbase @ user @			Serial	343
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	Author	Saayman, G.S.
	Title	Behaviour of the adult males in a troop of free-ranging Chacma baboons (Papio ursinus)			Type	Journal Article
	Year	1971	Publication	Folia Primatologica; International Journal of Primatology	Abbreviated Journal	Folia Primatol (Basel)
	Volume	15	Issue	1	Pages	36-57
	Keywords	Aggression; Animals; Behavior, Animal; Female; Grooming; Haplorhini; Homing Behavior; Humans; Leadership; Male; Papio; Pregnancy; Sex Factors; *Sexual Behavior, Animal; Social Dominance
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0015-5713	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:5003339			Approved	no
	Call Number				Serial	2053
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	Author	Rendall, D.; Cheney, D.L.; Seyfarth, R.M.
	Title	Proximate factors mediating “contact” calls in adult female baboons (Papio cynocephalus ursinus) and their infants			Type	Journal Article
	Year	2000	Publication	Journal of comparative psychology (Washington, D.C. : 1983)	Abbreviated Journal	J Comp Psychol
	Volume	114	Issue	1	Pages	36-46
	Keywords	Animals; Animals, Wild; Botswana; Female; Maternal Behavior; Motivation; Orientation; Papio/psychology; Social Environment; Sound Spectrography; *Vocalization, Animal
	Abstract	“Contact” calls are widespread in social mammals and birds, but the proximate factors that motivate call production and mediate their contact function remain poorly specified. Field study of chacma baboons (Papio cynocephalus ursinus) revealed that contact barks in adult females were motivated by separation both from the group at large and from their dependent infants. A variety of social and ecological factors affect the probability of separation from either one or both. Results of simultaneous observations and a playback experiment indicate that the contact function of calling between mothers and infants was mediated by occasional maternal retrieval rather than coordinated call exchange. Mothers recognized the contact barks of their own infants and often were strongly motivated to locate them. However, mothers did not produce contact barks in reply unless they themselves were at risk of becoming separated from the group.
	Address	Department of Psychology, University of Pennsylvania, USA. d.rendall@uleth.ca
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0735-7036	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:10739310			Approved	no
	Call Number	refbase @ user @			Serial	695
Permanent link to this record



	Author	Pitchford, R.J.; Visser, P.S.; du Toit, J.F.; de Pienaar, U.V.; Young, E.
	Title	Observations on the ecology of Schistosoma mattheei Veglia & Le Roux, 1929, in portion of the Kruger National Park and surrounding area using a new quantitative technique for egg output			Type	Journal Article
	Year	1973	Publication	Journal of the South African Veterinary Association	Abbreviated Journal	J S Afr Vet Assoc
	Volume	44	Issue	4	Pages	405-420
	Keywords	Animals; Artiodactyla; Buffaloes; Cattle; Cattle Diseases/epidemiology; Dog Diseases/epidemiology; Dogs; Feces; Goats; Haplorhini; Horse Diseases/epidemiology; Horses; Humans; Methods; Monkey Diseases/epidemiology; Papio; Parasite Egg Count; Schistosomiasis/epidemiology/*veterinary; Sheep; Sheep Diseases/epidemiology; South Africa; Swine; Swine Diseases/epidemiology
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1019-9128	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:4212207			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	2711
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	Author	Owren, M.J.; Seyfarth, R.M.; Cheney, D.L.
	Title	The acoustic features of vowel-like grunt calls in chacma baboons (Papio cyncephalus ursinus): implications for production processes and functions			Type	Journal Article
	Year	1997	Publication	The Journal of the Acoustical Society of America	Abbreviated Journal	J Acoust Soc Am
	Volume	101	Issue	5 Pt 1	Pages	2951-2963
	Keywords	Animals; Female; Papio; Sound Spectrography; Vocalization, Animal
	Abstract	The acoustic features of 216 baboon grunts were investigated through analysis of field-recorded calls produced by identified females in known contexts. Analyses addressed two distinct questions: whether the acoustic features of these tonal sounds could be characterized using a source-filter approach and whether the acoustic features of grunts varied by individual caller and social context. Converging evidence indicated that grunts were produced through a combination of periodic laryngeal vibration and a stable vocal tract filter. Their acoustic properties closely resembled those of prototypical human vowel sounds. In general, variation in the acoustic features of the grunts was more strongly related to caller identity than to the social contexts of calling. However, two acoustic parameters, second formant frequency and overall spectral tilt, did vary consistently depending on whether the caller was interacting with an infant or participating in a group move. Nonetheless, in accordance with the general view that identity cueing is a compelling function in animal communication, it can be concluded that much of the observed variability in grunt acoustics is likely to be related to this aspect of signaling. Further, cues related to vocal tract filtering appear particularly likely to play an important role in identifying individual calling animals.
	Address	Department of Psychology, Reed College, Portland, Oregon 97202, USA. michael.owren@reed.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0001-4966	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:9165741			Approved	no
	Call Number	refbase @ user @			Serial	698
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	Author	Kitchen, D.M.; Cheney, D.L.; Seyfarth, R.M.
	Title	Male chacma baboons (Papio hamadryas ursinus) discriminate loud call contests between rivals of different relative ranks			Type	Journal Article
	Year	2005	Publication	Animal cognition	Abbreviated Journal	Anim. Cogn.
	Volume	8	Issue	1	Pages	1-6
	Keywords	Acoustic Stimulation; Animals; Discrimination Learning; Hierarchy, Social; Male; Papio hamadryas/psychology; Social Dominance; *Vocalization, Animal
	Abstract	Males in multi-male groups of chacma baboons (Papio hamadryas ursinus) in Botswana compete for positions in a linear dominance hierarchy. Previous research suggests that males treat different categories of rivals differently; competitive displays between males of similar rank are more frequent and intense than those between disparately ranked males. Here we test whether males also respond differently to male-male interactions in which they are not directly involved, using playbacks of the loud 'wahoo' calls exchanged between competing males in aggressive displays. We played paired sequences of vocal contests between two adjacently ranked and two disparately ranked males to ten subjects, half ranking below the signalers in the call sequences and half above. Subjects who ranked above the two signalers showed stronger responses than lower-ranking subjects. Higher-ranking subjects also responded more strongly to sequences involving disparately ranked, as opposed to adjacently ranked opponents, suggesting that they recognized those individuals' relative ranks. Strong responses to sequences between disparately ranked opponents might have occurred either because such contests typically involve resources of high fitness value (defense of meat, estrous females or infants vulnerable to infanticide) or because they indicate a sudden change in one contestant's condition. In contrast, subjects who ranked lower than the signalers responded equally strongly to both types of sequences. These subjects may have been able to distinguish between the two categories of opponents but did not respond differently to them because they had little to lose or gain by a rank reversal between males that already ranked higher than they did.
	Address	Department of Psychology, University of Pennsylvania, Philadelphia, PA 19104, USA. dkitchen@psych.upenn.edu
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1435-9448	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:15164259			Approved	no
	Call Number	refbase @ user @			Serial	687
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	Author	King, A.J.; Douglas, C.M.S.; Huchard, E.; Isaac, N.J.B.; Cowlishaw, G.
	Title	Dominance and affiliation mediate despotism in a social primate			Type	Journal Article
	Year	2008	Publication	Current Biology : CB	Abbreviated Journal	Curr Biol
	Volume	18	Issue	23	Pages	1833-1838
	Keywords	Animals; Authoritarianism; Behavior, Animal/physiology; Cooperative Behavior; Decision Making; Feeding Behavior; Female; Group Processes; Male; Papio ursinus/psychology; Social Dominance
	Abstract	Group-living animals routinely have to reach a consensus decision and choose between mutually exclusive actions in order to coordinate their activities and benefit from sociality. Theoretical models predict “democratic” rather than “despotic” decisions to be widespread in social vertebrates, because they result in lower “consensus costs”-the costs of an individual foregoing its optimal action to comply with the decision-for the group as a whole. Yet, quantification of consensus costs is entirely lacking, and empirical observations provide strong support for the occurrence of both democratic and despotic decisions in nature. We conducted a foraging experiment on a wild social primate (chacma baboons, Papio ursinus) in order to gain new insights into despotic group decision making. The results show that group foraging decisions were consistently led by the individual who acquired the greatest benefits from those decisions, namely the dominant male. Subordinate group members followed the leader despite considerable consensus costs. Follower behavior was mediated by social ties to the leader, and where these ties were weaker, group fission was more likely to occur. Our findings highlight the importance of leader incentives and social relationships in group decision-making processes and the emergence of despotism.
	Address	Institute of Zoology, Zoological Society of London, Regent's Park, London, NW1 4RY, UK. andrew.king@ioz.ac.uk
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0960-9822	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:19026539			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	5124
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	Author	Heath-Lange, S.; Ha, J.C.; Sackett, G.P.
	Title	Behavioral measurement of temperament in male nursery-raised infant macaques and baboons			Type	Journal Article
	Year	1999	Publication	American journal of primatology	Abbreviated Journal	Am. J. Primatol.
	Volume	47	Issue	1	Pages	43-50
	Keywords	Age Factors; Animal Technicians; Animals; Animals, Newborn/psychology; Behavior, Animal/physiology; Defecation; Facial Expression; Humans; Irritable Mood; Macaca fascicularis/psychology; Male; Papio/psychology; Sex Characteristics; Species Specificity; Temperament/physiology; Urination; Vocalization, Animal; Weaning
	Abstract	We define temperament as an individual's set of characteristic behavioral responses to novel or challenging stimuli. This study adapted a temperament scale used with rhesus macaques by Schneider and colleagues [American Journal of Primatology 25:137-155, 1991] for use with male pigtailed macaque (Macaca nemestrina, n = 7), longtailed macaque (M. fascicularis, n = 3), and baboon infants (Papio cynocephalus anubis, n = 4). Subjects were evaluated twice weekly for the first 5 months of age during routine removal from their cages for weighing. Behavioral measures were based on the subject's interactions with a familiar human caretaker and included predominant state before capture, response to capture, contact latency, resistance to tester's hold, degree of clinging, attention to environment, defecation/urination, consolability, facial expression, vocalizations, and irritability. Species differences indicated that baboons were more active than macaques in establishing or terminating contact with the tester. Temperament scores decreased over time for the variables Response to Capture and Contact Latency, indicating that as they grew older, subjects became less reactive and more bold in their interactions with the tester. Temperament scores changed slowly with age, with greater change occurring at younger ages. The retention of variability in reactivity between and within species may be advantageous for primates, reflecting the flexibility necessary to survive in a changing environment.
	Address	Department of Psychology and Regional Primate Research Center, University of Washington, Seattle, USA. crgsjh@vmmc.org
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0275-2565	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:9888720			Approved	no
	Call Number	Equine Behaviour @ team @			Serial	4117
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	Author	Fischer, J.; Hammerschmidt, K.; Cheney, D.L.; Seyfarth, R.M.
	Title	Acoustic features of male baboon loud calls: influences of context, age, and individuality			Type	Journal Article
	Year	2002	Publication	The Journal of the Acoustical Society of America	Abbreviated Journal	J Acoust Soc Am
	Volume	111	Issue	3	Pages	1465-1474
	Keywords	Age Factors; Animal Communication; Animals; Individuality; Male; Papio; Social Environment; Sound Spectrography; Vocalization, Animal
	Abstract	The acoustic structure of loud calls (“wahoos”) recorded from free-ranging male baboons (Papio cynocephalus ursinus) in the Moremi Game Reserve, Botswana, was examined for differences between and within contexts, using calls given in response to predators (alarm wahoos), during male contests (contest wahoos), and when a male had become separated from the group (contact wahoos). Calls were recorded from adolescent, subadult, and adult males. In addition, male alarm calls were compared with those recorded from females. Despite their superficial acoustic similarity, the analysis revealed a number of significant differences between alarm, contest, and contact wahoos. Contest wahoos are given at a much higher rate, exhibit lower frequency characteristics, have a longer “hoo” duration, and a relatively louder “hoo” portion than alarm wahoos. Contact wahoos are acoustically similar to contest wahoos, but are given at a much lower rate. Both alarm and contest wahoos also exhibit significant differences among individuals. Some of the acoustic features that vary in relation to age and sex presumably reflect differences in body size, whereas others are possibly related to male stamina and endurance. The finding that calls serving markedly different functions constitute variants of the same general call type suggests that the vocal production in nonhuman primates is evolutionarily constrained.
	Address	Department of Psychology, University of Pennsylvania, Philadelphia 19104, USA. fischer@eva.mpg.de
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0001-4966	ISBN		Medium
	Area		Expedition		Conference
	Notes	PMID:11931324			Approved	no
	Call Number	refbase @ user @			Serial	691
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