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Author Amdam, G.V.; Csondes, A.; Fondrk, M.K.; Page, R.E.J. doi  openurl
  Title Complex social behaviour derived from maternal reproductive traits Type Journal Article
  Year 2006 Publication Nature Abbreviated Journal Nature  
  Volume 439 Issue 7072 Pages 76-78  
  Keywords Aging/physiology; Animals; Bees/*physiology; *Evolution; Feeding Behavior/*physiology; Female; Infertility, Female; Maternal Behavior/*physiology; Ovary/physiology; Pollen/metabolism; Reproduction/*physiology; *Social Behavior  
  Abstract A fundamental goal of sociobiology is to explain how complex social behaviour evolves, especially in social insects, the exemplars of social living. Although still the subject of much controversy, recent theoretical explanations have focused on the evolutionary origins of worker behaviour (assistance from daughters that remain in the nest and help their mother to reproduce) through expression of maternal care behaviour towards siblings. A key prediction of this evolutionary model is that traits involved in maternal care have been co-opted through heterochronous expression of maternal genes to result in sib-care, the hallmark of highly evolved social life in insects. A coupling of maternal behaviour to reproductive status evolved in solitary insects, and was a ready substrate for the evolution of worker-containing societies. Here we show that division of foraging labour among worker honey bees (Apis mellifera) is linked to the reproductive status of facultatively sterile females. We thereby identify the evolutionary origin of a widely expressed social-insect behavioural syndrome, and provide a direct demonstration of how variation in maternal reproductive traits gives rise to complex social behaviour in non-reproductive helpers.  
  Address Arizona State University, School of Life Sciences, Tempe, Arizona 85287, USA. Gro.Amdam@asu.edu  
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  Language English Summary Language Original Title  
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  Series Volume Series Issue Edition  
  ISSN 1476-4687 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:16397498 Approved no  
  Call Number refbase @ user @ Serial 531  
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Author Aureli, Filippo; de Waal, F. B. M. openurl 
  Title Natural conflict resolution Type Book Whole
  Year 2000 Publication University of California Press Abbreviated Journal University of California Press.  
  Volume Issue Pages  
  Keywords  
  Abstract Introduction FILIPPO AURELI & FRANS B. M. DE WAAL Menzel, C. R. 1993. van Schaik, C. P., & van Noordwijk, M. A. 1986. Communication by agonistic displays: What can games theory contribute to ethology? Chapais, B. 1995. Alliances as a means of competition in primates: Evolutionary, developmental, and cognitive aspects. Punishment in animal societies. Nature, 373: 209-216.  
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  Publisher Place of Publication Berkley Editor  
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  Notes Approved no  
  Call Number refbase @ user @ Serial 533  
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Author Seed, A.M.; Clayton, N.S.; Emery, N.J. doi  openurl
  Title Postconflict third-party affiliation in rooks, Corvus frugilegus Type Journal Article
  Year 2007 Publication Current biology : CB Abbreviated Journal Curr Biol  
  Volume 17 Issue 2 Pages 152-158  
  Keywords  
  Abstract Conflict features in the lives of many animal species and induces social stress mediated by glucocorticoid hormones [1]. Postconflict affiliation, between former opponents (reconciliation) or between former opponents and a bystander (third-party affiliation), has been suggested as a behavioral mechanism for reducing such stress [2], but has been studied almost exclusively in primates [3]. As with many primates, several bird species live in social groups and form affiliative relationships [4]. Do these distantly related animals also use affiliative behavior to offset the costs of conflict? We studied postconflict affiliation in a captive group of rooks. Unlike polygamous primates, monogamous rooks did not reconcile with former opponents. However, we found clear evidence of third-party affiliation after conflicts. Both initiators and targets of aggression engaged in third-party affiliation with a social partner and employed a specific behavior, bill twining, during the postconflict period. Both former aggressors and uninvolved third parties initiated affiliative contacts. Despite the long history of evolutionary divergence, the pattern of third-party affiliation in rooks is strikingly similar to that observed in tolerant primate species. Furthermore, the absence of reconciliation in rooks makes sense in light of the species differences in social systems.  
  Address Department of Experimental Psychology, University of Cambridge, Cambridge CB2 3EB, United Kingdom  
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  Series Volume Series Issue Edition  
  ISSN 0960-9822 ISBN Medium  
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  Notes PMID:17240341 Approved no  
  Call Number refbase @ user @ Serial 534  
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Author Proudman, C.; Pinchbeck, G.; Clegg, P.; French, N. doi  openurl
  Title Equine welfare: risk of horses falling in the Grand National Type Journal Article
  Year 2004 Publication Nature Abbreviated Journal Nature  
  Volume 428 Issue 6981 Pages 385-386  
  Keywords Accidental Falls/prevention & control/*statistics & numerical data; Animal Welfare; Animals; Great Britain; Horse Diseases/prevention & control; Horses/*physiology; Odds Ratio; Risk Assessment; *Sports  
  Abstract As in other competitive sports, the famous Grand National steeplechase, which is held at Aintree in the United Kingdom and is watched by 600 million people worldwide, sometimes results in injury. By analysing data from the past 15 Grand National races (consisting of 560 starts by horses), we are able to identify several factors that are significantly associated with failure to complete the race: no previous experience of the course and its unique obstacles, unfavourable ground conditions (too soft or too hard), a large number of runners, and the length of the odds ('starting price'). We also find that there is an increased risk of falling at the first fence and at the jump known as Becher's Brook, which has a ditch on the landing side. Our findings indicate ways in which the Grand National could be made safer for horses and illustrate how epidemiological analysis might contribute to preventing injury in competitive sport.  
  Address Epidemiology Group, Faculty of Veterinary Science, University of Liverpool, Leahurst, Neston, Wirral CH64 7TE, UK. c.j.proudman@liverpool.ac.uk  
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  Language English Summary Language Original Title  
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  ISSN 1476-4687 ISBN Medium  
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  Notes PMID:15042079 Approved no  
  Call Number refbase @ user @ Serial 535  
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Author Doré,F.Y.; Fiset,S.; Goulet,S.; Dumans,M.-C.; Gagnon,S. openurl 
  Title Search behavior in cats and dogs Interspecific differences in working memory and spatial cognition Type Journal Article
  Year 1996 Publication Animal Learning & Behavior Abbreviated Journal Anim Learn. & Behav.  
  Volume 24 Issue 2 Pages 142-149  
  Keywords  
  Abstract Cats and dogs search behavior was compared in different problems where an object was visibly

moved behind a screen that was then visibly moved to a new position. In Experiments 1 (cats) and 2 (dogs),

one group was tested with identical screens and the other group was tested with dissimilar screens.

Results showed that in both species, search behavior was based on processing of spatial information

rather than on recognition of the visual features of the target screen. Cats and dogs were unable to find

the object by inferring its invisible movement. They reached a high level of success only if there was

direct perceptual evidence that the object could not be at its initial position. When the position change

was indicated by an indirect cue, cats searched more at the object`s initial than final position, whereas

dogs searched equally at both positions. Interspecific similarities and differences are interpreted in

terms of the requirements for resetting working memory.
 
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  Call Number refbase @ user @ Serial 537  
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Author SYLVAIN GAGNON,FRANCOISY. DORE openurl 
  Title Search behavior of dogs (Canis familiaris) in invisible displacement problems Type Journal Article
  Year 1993 Publication Animal Learning & Behavior Abbreviated Journal Anim Learn. & Behav.  
  Volume 21 Issue 3 Pages 246-254  
  Keywords  
  Abstract Gagnon and Dor (1992) showed that domestic dogs are able to solve a Piagetian object permanence

task called the invisible displacement problem. A toy is hidden in a container which is

moved behind a screen where the toy is removed and left. Dogs make more errors in these problems

than they do in visible displacement tests, in which the object is hidden directly behind

the target screen. In Experiment 1, we examinedcomponents ofthe standard procedure of invisible

displacements that may make encoding or retention of the hiding location more difficult than

it is in visible displacements. In Experiment 2, we compared dogs performances in visible and

invisible displacement problems when delays of 0, 10, and 20 sec were introduced between the

objects final disappearance and the subjects release. The results revealed that dogs poorer performance

in invisible displacement tests is related to the complex sequence of events that have

to be encoded or remembered as well as to a difficulty in representing the position change that

is signaled, but not directly perceived.
 
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  Call Number refbase @ user @ Serial 538  
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Author Ord, T.J.; Evans, C.S. url  openurl
  Title Interactive video playback and opponent assessment in lizards Type Journal Article
  Year 2002 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 59 Issue 2 Pages 55-65  
  Keywords Animal communication; Display; Lizard; Playback; Visual signal  
  Abstract Video playback has been used to explore many issues in animal communication, but the scope of this work has been constrained by the lack of stimulus-subject interaction. In many natural contexts, each participant's signalling behaviour is dependent from moment-to-moment on that of the other. Analyses of acoustic communication demonstrate the value of reproducing such social contingencies. We assessed the utility of interactive playback for studies of visual signalling by comparing the responses of male Jacky dragons, Amphibolurus muricatus, to interactive and non-interactive digital video playbacks of a life-sized conspecific. Displays produced by lizards in the interactive condition had the effect of suppressing the aggressive display of their simulated opponent. Each stimulus sequence generated during an interactive playback was subsequently played to a size-matched control animal. Males that could interact with the video stimulus responded principally with aggressive displays, while those that could not produced a mixture of aggressive and appeasement signals. Adding a degree of receiver responsiveness is hence sufficient to alter the type of signal evoked, even when video stimuli are physically identical. Interactive playback permits the experimental study of a broader range of theoretical topics and can enhance the realism of video stimuli.  
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  Call Number refbase @ user @ Serial 539  
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Author Ord, T.J.; Peters, R.A.; Evans, C.S.; Taylor, A.J. url  openurl
  Title Digital video playback and visual communication in lizards Type Journal Article
  Year 2002 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 63 Issue 5 Pages 879-890  
  Keywords  
  Abstract Experimental analyses of dynamic visual signals have to overcome the technical obstacle of reproducing complex motor patterns such as those found in courtship and threat displays. Video playback offers a potential solution to this problem, but it has recently been criticized because of sensory differences between humans and nonhuman animals, which suggest that video stimuli might be perceived as deficient relative to live conspecifics. Quantitative comparisons are therefore necessary to determine whether video sequences reliably evoke natural responses. Male Jacky dragons, Amphibolurus muricatus, compete for territories using complex displays delivered in a rapid stereotyped sequence. We evaluated video playback as a technique for studying this visual signal. Digital video sequences depicting a life-sized displaying male were indistinguishable from live male conspecifics in the rate and structure of aggressive displays evoked. Other measures of social behaviour suggested that video stimuli were more effective in this context. Lizards produced significantly more appeasement displays and had higher rates of substrate licking and locomotor activity in response to video playback than to confined male opponents, which failed to produce aggressive displays. Lizards tracked temporal changes in the display rate of video stimuli and were also sensitive to individual differences in morphology and behaviour between video exemplars. These results show that video stimuli are appropriate for the experimental analysis of Jacky dragon aggressive displays. We compare the potential shortcomings of video playback with those of other techniques and conclude that no approach offers a panacea, but that several have complementary characteristics. Copyright 2002 The Association for the Study of Animal Behaviour. Published by Elsevier Science Ltd. All rights reserved.  
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  Call Number refbase @ user @ Serial 540  
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Author Goncalves, D.M.; Oliveira, R.F.; Korner, K.; Poschadel, J.R.; Schlupp, I. url  doi
openurl 
  Title Using video playbacks to study visual communication in a marine fish, Salaria pavo Type Journal Article
  Year 2000 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 60 Issue 3 Pages 351-357  
  Keywords  
  Abstract Video playbacks have been successfully applied to the study of visual communication in several groups of animals. However, this technique is controversial as video monitors are designed with the human visual system in mind. Differences between the visual capabilities of humans and other animals will lead to perceptually different interpretations of video images. We simultaneously presented males and females of the peacock blenny, Salaria pavo, with a live conspecific male and an online video image of the same individual. Video images failed to elicit appropriate responses. Males were aggressive towards the live male but not towards video images of the same male. Similarly, females courted only the live male and spent more time near this stimulus. In contrast, females of the gynogenetic poecilid Poecilia formosa showed an equal preference for a live and video image of a P. mexicana male, suggesting a response to live animals as strong as to video images. We discuss differences between the species that may explain their opposite reaction to video images.  
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  Notes Approved no  
  Call Number refbase @ user @ Serial 541  
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Author Kaminski, J.; Riedel, J.; Call, J.; Tomasello, M. doi  openurl
  Title Domestic goats, Capra hircus, follow gaze direction and use social cues in an object choice task Type Journal Article
  Year 2005 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 69 Issue 1 Pages 11-18  
  Keywords  
  Abstract Gaze following is a basic social cognitive skill with many potential benefits for animals that live in social groups. At least five primate species are known to follow the gaze of conspecifics, but there have been no studies on gaze following in other mammals. We investigated whether domestic goats can use the gaze direction of a conspecific as a cue to find food. They were able to do this, at a level comparable to that of primates. In a second experiment, we tested goats' ability to use gaze and other communicative cues given by a human in a so-called object choice situation. An experimenter hid food out of sight of the subject under one of two cups. After baiting the cup the experimenter indicated the location of the food to the subject by using different cues. The goats used communicative cues (touching and pointing) but not gaze by itself. Since domestic dogs are very skilled in this task, whereas wolves are not, one hypothesis is that the use of communicative cues in the object choice task is a side-effect of domestication.  
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  Notes Approved no  
  Call Number refbase @ user @ Serial 542  
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