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Heyes CM |
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Title  |
Self-recognition in primates: irreverence, irrelevance and irony |
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1996 |
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Animal Behaviour. |
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Anim. Behav. |
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51 |
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470 |
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Equine Behaviour @ team @ |
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3007 |
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Author |
Anderson JR; Gallup GG |
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Title |
Self-recognition in Saguinus? A critical essay |
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1997 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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54 |
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1563 |
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Equine Behaviour @ team @ |
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2978 |
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Mitchell R |
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Title |
Self-recognition, methodology and explanation: a comment on Heyes (1994) |
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1995 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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51 |
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467 |
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Equine Behaviour @ team @ |
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3020 |
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Powell, A.J.; Wolff, P.R. |
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Title |
Sex differences in mouse urination patterns |
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Year |
1982 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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30 |
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4 |
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1207-1211 |
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When tested in circular open fields male and female mice (Mus musculus) produced strongly centrifugal urination patterns, which showed a clear `edge-dependency' in all the field sizes used. However, striking sex differences in the pattern of deposition were shown in terms of both the number and distribution of the urine spots. Male mice produce large numbers of spots which are regularly dispersed, while females produce relatively fewer spots with a more clumped distribution. It is suggested that a hitherto unsuspected level of intersexual communication may explain these differences. |
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2145 |
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Clutton-Brock, T.H.; Parker, G.A. |
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Title |
Sexual coercion in animal societies |
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Year |
1995 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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49 |
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5 |
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1345-1365 |
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In a wide range of animal species, males coerce females to mate with them, either by physically forcing them to mate, by harassing them until they mate or by punishing persistent refusal to mate. The first section of this paper argues that the possibility of forced copulation can generate arms races between males and females that may have substantial costs to both sexes. In the second section, it is suggested that sexual harassment commonly represents a `war of attrition' between the sexes; existing game theory models that may apply to sexual conflict over mating decisions are reviewed. The third section develops a simple prospective model for the evolution of intimidation by punishment in situations where males can raise the probability that females will accept their advances in future by punishing them for refusal to mate. Where the benefits of sexual coercion to males are high, all three male strategies may develop to a point where they have substantial costs to females. In the final section, evidence that female behaviour is adapted to minimizing these costs is reviewed. |
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refbase @ user @ |
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757 |
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Author |
Palagi, E. |
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Title |
Sharing the motivation to play: the use of signals in adult bonobos |
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2008 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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75 |
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3 |
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887-896 |
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bonobo; full play face; Pan paniscus; play face; playful propensity; ritualization; social play; social tolerance; solitary play; visual communication |
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Gestures and facial displays are involved in regulating many aspects of mammal social life such as aggression, dominance-subordinate relationships, appeasement and play. Playful activity is an interesting behaviour for examining the role of signals as intentional communication systems. When animals play they perform patterns that are used in other serious contexts. To avoid miscommunication, many species have evolved signals to maintain a playful mood. Bonobos, Pan paniscus, with their flexible social relationships and playful propensity, may represent a good model species to test some hypotheses on adult play signalling. I analysed the potential roles of facial play expressions and solitary play in soliciting and regulating social play and found that adult bonobos used the play face (relaxed open-mouth display) in a selective manner. Play faces were more frequent during social than solitary play and, within social play, polyadic sessions (even though less frequent than dyadic sessions) were characterized by a higher frequency of signals. Following the rule of play intensity matching, play faces were more frequent when the two players matched in age and size (sessions among adults). Moreover, among dyads there was a positive correlation between the frequency of aggressive interactions performed and the frequency of play signals used, thus suggesting that signals are crucial in play negotiations among individuals showing high baseline levels of aggression. Finally, solitary play, especially when it involved pirouettes and somersaults, had an important role in triggering social play. |
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Equine Behaviour @ team @ |
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4316 |
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Caraco, T.; Kacelnik, A.; Mesnick, N.; Smulewitz, M. |
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Title |
Short-term rate maximization when rewards and delays covary |
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1992 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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44 |
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Part 3 |
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441-447 |
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In nature foragers must exploit resources that vary randomly in both the energy acquired per item (reward) and the time required to pursue, capture and process an item (delay). Furthermore, rewards and delays associated with particular resources may often covary significantly. An analytical model asks how variance-covariance levels for rewards and delays could influence choice of resources when lack of information or cognitive limitation implies that a consumer attempts to maximize its short-term rate of energy gain. Both greater expected reward and reduced expected delay clearly should enhance preference for a resource. The model predicts that increased delay variance and reduced reward-delay covariance should increase a forager's preference for a resource. A forager should be risk-averse towards reward variance when the reward-delay covariance is positive, but should become risk-prone towards reward variance when the reward-delay covariance is negative. |
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2113 |
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Coleman, K.; Wilson, D.S. |
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Shyness and boldness in pumpkinseed sunfish: individual differences are context-specific |
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1998 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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56 |
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4 |
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927-936 |
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Natural selection often promotes a mix of behavioural phenotypes in a population. Adaptive variation in the propensity to take risks might explain individual differences in shyness and boldness in humans and other species. It is often implicitly assumed that shyness and boldness are general personality traits expressed across many situations. From the evolutionary standpoint, however, individual differences that are adaptive in one context (e.g. predator defence) may not be adaptive in other contexts (e.g. exploration of the physical environment or intraspecific social interactions). We measured the context specificity of shyness and boldness in a natural population of juvenile pumpkinseed sunfish,Lepomis gibbosus, by exposing the fish to a potentially threatening stimulus (a red-tipped metrestick extended towards the individual) and a nonthreatening stimulus (a novel food source). We also related these measures of shyness and boldness to behaviours observed during focal observations, both before and after the introduction of a predator (largemouth bass,Micropterus salmoides). Consistent individual differences were found within both contexts, but individual differences did not correlate across contexts. Furthermore, fish that were scored as intermediate in their response to the metrestick behaved most boldly as foragers and in response to the bass predators. These results suggest that shyness and boldness are context-specific and may not exist as a one-dimensional behavioural continuum even within a single context. |
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2094 |
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Smith, J.E.; Kolowski, J.M.; Graham, K.E.; Dawes, S.E.; Holekamp, K.E. |
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Social and ecological determinants of fission-fusion dynamics in the spotted hyaena |
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2008 |
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Animal Behaviour. |
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Anim. Behav. |
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76 |
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3 |
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619-636 |
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competition; conflict resolution; cooperative hunting; Crocuta crocuta; ecological constraints; group living; social rank |
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Theory predicts that individuals living in fission-fusion societies, in which group members frequently change subgroups, should modify grouping patterns in response to varying social and environmental conditions. Spotted hyaenas, Crocuta crocuta, are long-lived carnivores that reside in permanent social groups called clans. Clans are complex, fission-fusion societies in which individual members travel, rest and forage in subgroups that frequently change composition. We studied two clans in Kenya to provide the first detailed description of fission-fusion dynamics in this species. Because social and ecological circumstances can influence the cohesiveness of animal societies, we evaluated the extent to which specific circumstances promote the formation of subgroups of various sizes. We found that cooperative defence of shared resources during interclan competition and protection from lions were cohesive forces that promoted formation of large subgroups. We also tested hypotheses suggesting factors limiting subgroup size. Mothers with small cubs avoided conspecifics, thereby reducing infanticide risk. Victims of aggression either reconciled fights or separated from former opponents to reduce the immediate costs of escalated aggression in the absence of food. As predicted by the ecological constraints hypothesis, hyaenas adjusted their grouping patterns over both short and long time scales in response to feeding competition. Crocuta were most gregarious during periods of abundant prey, joined clanmates at ephemeral kills in numbers that correlated with the energetic value of the prey and gained the most energy when foraging alone because cooperative hunting attracted numerous competitors. Overall, our findings indicate that resource limitation constrains grouping in this species. |
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Equine Behaviour @ team @ |
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4676 |
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Castles, D.L.; Whiten, A.; Aureli, F. |
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Social anxiety, relationships and self-directed behaviour among wild female olive baboons |
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1999 |
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Animal Behaviour. |
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Anim. Behav. |
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58 |
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6 |
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1207-1215 |
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Self-directed behaviour (SDB) can be used as a behavioural indicator of stress and anxiety in nonhuman primates (Maestripieri et al. 1992, Animal Behaviour, 44, 967-979). We investigated the effect of nearest neighbours' relative dominance status on the SDB of sexually mature female olive baboons, Papio anubis. When the animal nearest to (within 5 m of) a female was a dominant individual, SDB rates (a combined measure of self-scratching, self-grooming, self-touching, body shaking and yawning) increased by ca. 40% over those observed when the nearest neighbour was a subordinate. The results indicate that (1) SDB can be used as a measure of uncertainty during the social interactions of cercopithecine primates and (2) as there was considerable variation in SDB response according to the nature of the dominant individual, SDB can be used to assess relationship security (i.e. the perceived predictability of a relationship for one partner). Finally, in combination with measures of affiliation rate, SDB may provide insight into relationship value. |
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refbase @ user @ |
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