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Author Keverne, E.B. url  doi
openurl 
  Title (up) Olfactory learning Type Journal Article
  Year 1995 Publication Current Opinion in Neurobiology Abbreviated Journal Curr. Opin. Neurobiol.  
  Volume 5 Issue 4 Pages 482-488  
  Keywords olfactory perception mammals  
  Abstract Unravelling the mechanisms of learning and memory can, and should, be tackled at many levels. Discovery of the huge family of odourant receptor genes provided olfaction with `molecular' respectability similar to that afforded to the visual system. Consequently, molecular studies have dominated the olfactory literature this past year, even to the point of providing a molecular basis of olfactory perception. Needless to say, the molecular approach favours a `hard-wired' system; however, other results suggest that flexibility in the olfactory system provides for certain adaptations that are crucial to the biological needs of mammals.  
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  Notes Approved no  
  Call Number refbase @ user @ Serial 798  
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Author Coussi-Korbel, S.; Fragaszy, D.M. url  doi
openurl 
  Title (up) On the relation between social dynamics and social learning Type Journal Article
  Year 1995 Publication Animal Behaviour. Abbreviated Journal Anim. Behav.  
  Volume 50 Issue 6 Pages 1441-1453  
  Keywords  
  Abstract Experimental studies on social learning in animals have commonly centred on the psychological processes responsible for learning, and neglected social processes as potential influences on both the likelihood of social learning and the type of information that can be acquired socially. A model relating social learning to social dynamics among members of a group is presented. Three key hypotheses of the model are (1) behavioural coordination in time and/or space supports the process of social learning; (2) different kinds of coordination differentially support acquisition of different kinds of information; and (3) the various forms of behavioural coordination will be differentially affected by social dynamics. Several predictions relating inter-individual and group differences in social dynamics to social learning that follow from these hypotheses are presented.  
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  Notes Approved no  
  Call Number refbase @ user @ Serial 568  
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Author Clutton-Brock, J. openurl 
  Title (up) Origins of the dog: domestication and early history Type Book Chapter
  Year 1995 Publication The Domestic Dog: Its Evolution, Behaviour and Interactions with People Abbreviated Journal  
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  Publisher Cambridge University Press Place of Publication Cambridge Editor Serpell, J.A.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Clutton-Brock1995 Serial 6247  
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Author Visalberghi E; Fragaszy DM; Savage-Rumbaugh ES openurl 
  Title (up) Performance in a tool-using task by common chimpanzees (Pan troglodytes), bonobos (Pan paniscus), an orangutan (Pongo pygmaeus), and capuchin monkeys (Cebus apella) Type Journal Article
  Year 1995 Publication J. Comp. Psychol. Abbreviated Journal  
  Volume 109 Issue Pages 52  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3077  
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Author Robinson, T.A.; Foster, T.M.; Temple, W.; Poling, A. url  doi
openurl 
  Title (up) Performance of domestic hens under progressive-ratio schedules of food delivery Type Journal Article
  Year 1995 Publication Behavioural Processes Abbreviated Journal Behav. Process.  
  Volume 34 Issue 3 Pages 233-239  
  Keywords Progressive-ratio schedule; Domestic hen; Behavioral economics; Satiation  
  Abstract Domestic hens were exposed to progressive-ratio 2 and progressive-ratio 10 schedules of food delivery with different initial ratios (2, 10, 20, 30, and 40). Breaking points, defined as the largest ratios completed before responding ceased for 600 consecutive seconds, were recorded under all conditions. In general, breaking points were higher under the PR 10 schedule than under the PR 2 schedule, and the value of the initial ratio did not systematically affect the breaking point. The former finding suggests that relative satiation affected breaking points in the present study, but the latter finding suggests that the primary determinant was the `price' of the reinforcer, defined in terms of the number of responses required to produce it. Breaking points were similar under conditions where initial ratios changed from session to session and under more conventional conditions, where initial ratios remained unchanged over several sessions.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3605  
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Author Yamakoshi G; Sugiyama Y openurl 
  Title (up) Pestle-pounding behavior of wild chimpanzees at Bossou, Guinea: a newly observed tool-using behavior Type Journal Article
  Year 1995 Publication Primates Abbreviated Journal Primates  
  Volume 36 Issue Pages 489  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3052  
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Author Madigan, J.E.; Kortz, G.; Murphy, C.; Rodger, L. openurl 
  Title (up) Photic headshaking in the horse: 7 cases Type Journal Article
  Year 1995 Publication Equine Veterinary Journal Abbreviated Journal Equine Vet J  
  Volume 27 Issue 4 Pages 306-311  
  Keywords Animals; Anti-Allergic Agents/therapeutic use; *Behavior, Animal; Cyproheptadine/therapeutic use; Female; *Head; Horse Diseases/drug therapy/*etiology; Horses; Light/*adverse effects; Male; Movement Disorders/drug therapy/etiology/*veterinary  
  Abstract Seven horses with headshaking are described. No physical abnormalities were detected in any of the cases. Six of these horses had onset of clinical signs in the spring. The role of light was assessed by application of a blindfold or dark grey lens to the eyes, covering the eyes with a face mask and observing the horse in total darkness outdoors. Cessation of headshaking was observed with blindfolding (5/5 horses), night darkness outdoors (4/4 horses) and use of grey lenses (2/3 horses). Outdoor behaviour suggested efforts to avoid light in 4/4 cases. The photic sneeze in man is suggested as a putative mechanism for equine headshaking. Five of 7 horses had improvement with cyproheptadine treatment (0.3 mg/kg bwt b.i.d.). Headshaking developed within 2 calendar weeks of the same date for 3 consecutive years in one horse. Neuropharmacological alterations associated with photoperiod mechanisms leading to optic trigeminal summation are suggested as possible reasons for spring onset of headshaking.  
  Address Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California-Davis 95616-8737, USA  
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  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0425-1644 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:8536668 Approved no  
  Call Number refbase @ user @ Serial 1940  
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Author Saltz,D.; Rubenstein D.I. doi  openurl
  Title (up) Population Dynamics of a Reintroduced Asiatic Wild Ass (Equus Hemionus) Herd Type Journal Article
  Year 1995 Publication Ecological Applications Abbreviated Journal Ecol Appl  
  Volume 5 Issue 2 Pages 327-335  
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  Abstract Reintroduction is the release of animals into an area where they were extirpated or have significantly declined. Little is known about the factors that determine the success of failure of ungulate reintroduction. We studied the dynamics of a reintroduced Asiatic wild ass (Equus hemionus) population for 10 yr (1983-1993) following the first successful release into the wild. A total of 14 adult females and 14 adult males were released into a nature reserve in the Negev Desert of southern Israel. Over this 10-yr span the female population has grown to only 16 adults. Reproductive success of reintroduced females was low in the first 5 yr following release (0.0-0.8 foals@?female^-^1@?yr^-^1), but increased to 0.5-1.0 foals@?female^-^1@?yr^-^1 in the last 5 yr. Reproductive success of wild-born females @>3 yr old was higher than that of reintroduced females of similar ages, and ranged from 0.5-1.0 foals@?female@?^-^1yr^-^1. Our study and data from the E. hemionus studbook suggest that young nonprimiparous females produced primarily males, while primiparous and old females produced primarily females. We attribute the low reproductive success following reintroduction to the stress caused by capture, transport, and release procedures; we consider the age-dependent progeny sex ratio within the framework of Trivers and Willard's (1973) maternal allocation hypothesis. We conclude that the slow growth of the female population was due to: (a) low reproductive success of females in the early years following reintroduction, and (b) a male-skewed progeny sex ratio among prime-aged reintroduced females. A simple stochastic Leslie matrix model suggests that high survival and improved reproductive success of reintroduced females at later stages of the study, and the reproductive success of wild-born females, make the population relatively unsusceptible to extinction from random demographic processes. In-depth knowledge of the dynamics of reintroduced populations is vital for the correct assessment of their viability. We offer suggestions for increasing the efficacy of future wild ass reintroductions.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 2230  
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Author Templeton, J.J.; Giraldeau, L.-A. url  openurl
  Title (up) Public information cues affect the scrounging decisions of starlings Type Journal Article
  Year 1995 Publication Abbreviated Journal  
  Volume 49 Issue 6 Pages 1617-1626  
  Keywords  
  Abstract The foraging decisions that individuals make within groups should depend on the information available to them. An aviary experiment was conducted to examine whether a starling's, Sturnus vulgaris, decisions either to approach and feed from (scrounge) or to avoid the patches exploited by a partner bird are influenced by the information the partner provides. Both the type of information a subject could recognize and the point at which this information became available during the partner's exploitation of a patch were manipulaed. Information concerning the quality of a patch was available in the form of a concealed colour cue and from the behaviour of the partner bird. The foraging environment was manipulated such that colour cues were either present or absent, and provided either correct or incorrect information concerning the presence of food. When cues corresponded with past foraging experience, test subjects responded selectively and profitably to the patch exploitations of the partner; they scrounged from a higher proportion of profitable patches than control birds, which lacked the ability to recognize colour cues. Test subjects also arrived more quickly at profitable patches that the partner bird discovered than did control birds; and consequently, were able to obtain more food at each food patch scrounged. Finally, test subjects avoided scrounging when the partner discovered empty patches and thus saved foraging time. Responding selectively to public information, therefore, allows an individual to compete more effectively for resources within a foraging group.  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 2190  
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Author Clutton-Brock, T.H.; Parker, G.A. url  doi
openurl 
  Title (up) Punishment in animal societies Type Journal Article
  Year 1995 Publication Abbreviated Journal Nature  
  Volume 373 Issue 6511 Pages 209-216  
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  Abstract Although positive reciprocity (reciprocal altruism) has been a focus of interest in evolutionary biology, negative reciprocity (retaliatory infliction of fitness reduction) has been largely ignored. In social animals, retaliatory aggression is common, individuals often punish other group members that infringe their interests, and punishment can cause subordinates to desist from behaviour likely to reduce the fitness of dominant animals. Punishing strategies are used to establish and maintain dominance relationships, to discourage parasites and cheats, to discipline offspring or prospective sexual partners and to maintain cooperative behaviour.  
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  Notes 10.1038/373209a0 Approved no  
  Call Number Equine Behaviour @ team @ Serial 4838  
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