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Author |
Price, E.O. |
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Title |
Behavioral aspects of animal domestication |
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1984 |
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Q Rev Biol |
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59 |
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Equine Behaviour @ team @ Price1984 |
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6239 |
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Author |
Sato, S. |
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Title |
Social licking pattern and its relationships to social dominance and live weight gain in weaned calves |
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1984 |
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Applied Animal Behaviour Science |
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Appl. Anim. Behav. Sci. |
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12 |
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1 |
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25-32 |
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Social licking patterns of heifer and steer herds were observed and recorded during periods of resting and intermittent feeding. The results revealed the following features: (1) heifers and steers had 15.0 and 15.2 social licking interactions per hour which lasted for 37.8 and 41.0 s on average, respectively. The average time an animal spent licking was about 25 s per hour; (2) all the animals in the herds were licked by others, but only 72.3% of the animals licked other animals; (3) the animals close in the social hierarchy tended to lick each other for a longer time than did remote animals; (4) the time receiving l licking and weight gain tended to be positively correlated. The observations suggest that (1) the motivation of giving licking may be individual-specific and may be influenced by genetic factors, while that of receiving licking appears to be general, and that (2) social licking may mean not only cleaning the skin and hair of a passive partner, but also leading it to psychological stability. |
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0168-1591 |
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doi: 10.1016/0168-1591(84)90093-5 |
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Equine Behaviour @ team @ |
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6407 |
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Sherry, D.F.; Galef Jr, B.G. |
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Title |
Cultural transmission without imitation: Milk bottle opening by birds |
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1984 |
Publication |
Animal Behaviour |
Abbreviated Journal |
Anim. Behav. |
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32 |
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3 |
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937-938 |
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0003-3472 |
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Equine Behaviour @ team @ |
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5611 |
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McFarland, D.J. |
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Roger L. Mellgren, Editor, Animal Cognition and Behavior, North-Holland, Amsterdam (1983), p. xi |
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1984 |
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Animal Behaviour. |
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Anim. Behav. |
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32 |
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2 |
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634-635 |
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Equine Behaviour @ team @ |
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2925 |
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Author |
Wolff, P.R.; Powell, A.J. |
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Urine patterns in mice: An analysis of male/female counter-marking |
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Journal Article |
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1984 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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32 |
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4 |
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1185-1191 |
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Counter-marking in mice, Mus musculus was investigated by analysing urine deposition on filter paper marked asymmetrically with urine of the opposite sex. Intact males deposited large numbers of urine spots with a marked angular bias towards previously marked quadrants. More spots were deposited on proestrous and ovariectomized donor urine patterns, their distribution being more centrifugal on oestrous urine and more centripetal in quadrants containing a large female urine spot in a central position. In contrast, castrated male mice deposited very few spots with no angular bias. Female urine patterns showed angular bias in response to intact, but not castrated male donor urine, a larger number of spots being produced by oestrous females. Thus the pattern of deposition offers scope for two-way communication of information about reproductive potential. |
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2144 |
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Author |
Kacelnik, A.; Houston, A.I. |
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Title |
Some effects of energy costs on foraging strategies |
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Year |
1984 |
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Animal Behaviour. |
Abbreviated Journal |
Anim. Behav. |
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32 |
Issue |
2 |
Pages |
609-614 |
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We consider the effect of including energy costs on the optimal strategy for animals exploiting a depleting food resource. In the context of central place foraging this leads to the problem of what load size should be brought back to the central place. Two strategies are discussed: (i) maximize gross rate of energy delivery and (ii) maximize net rate of energy delivery. The optimal load size (or optimal patch time) for net maximizers is not always larger than for gross maximizers, as has been claimed. Instead, the difference in optimal load size has the same sign as the difference between metabolic rates of travelling and foraging. We point out that the influence of costs has not always been correctly incorporated in experimental tests of the theory. |
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2122 |
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Cho, K.C.; Chan, K.K. |
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Title |
Kinetics of cold-induced denaturation of metmyoglobin |
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Year |
1984 |
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Biochimica et Biophysica Acta (BBA) – Protein Structure and Molecular Enzymology |
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786 |
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1-2 |
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103-108 |
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Metmyoglobin denaturation; Temperature jump; Denaturation kinetics; Conformational transformation; (Horse heart) |
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Using a slow temperature-jump spectrophotometer, we have studied the kinetics of cold-induced denaturation of metmyoglobin between 0[degree sign]C and 20[degree sign]C at acidic pH. The time-scale of the transition is slow and is of the order of minutes. The results are consistent with the transition's involving a total of three states, native (N), transient intermediate (I) and denatured (D), which are converted from one to the other in that order. |
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refbase @ user @ |
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3978 |
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Author |
Penzhorn, B.L. |
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A Long-term Study of Social Organisation and Behaviour of Cape Mountain Zebras Equus zebra zebra |
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1984 |
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Zeitschrift für Tierpsychologie |
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Z. Tierpsychol. |
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64 |
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2 |
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97-146 |
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Abstract and Summary 1. The social structure of Cape mountain zebras consists of breeding herds and bachelor groups. The breeding herds, which comprise 1 stallion, 1–5 mares and their offspring, remain stable over many years. When the stallion is displaced by another the mares usually remain together, although some herds split up. A dominance hierarchy exists, but leadership is not confined to the dominant member. Foals leave their maternal herds at a mean age of 21.9 months. The herd stallion tries to prevent foals from leaving the herd.2. Bachelor groups are not as rigidly structured as breeding herds but core groups could be identified through a Principal Components Analysis. Family ties may be important in the establishment of core groups. Bachelors succeed in becoming herd stallions when ca. 5 years old.3. The recipient of a threat moving away seems to be an adequate response. Submissive behaviour was only recorded in bachelors. Fighting is rare, with biting as an important element. Compared to plains zebras, sounds made in communication are limited. Social grooming mainly occurs between mare and foal. Grooming intention movements may be an appeasement gesture.4. An oestrus mare assumes a characteristic posture. Flehmen occurs. Urine and faeces of oestrus mares are often marked by the stallion. This cannot be explained functionally and is not restricted to eliminations of oestrus mares. Penis erection and jerking by resting stallions could serve as a warning signal, but may be masturbatory.5. The herd stallion actively herds members of his herd and reduces intraherd antagonism by means of threats. He usually leads when the herd goes to drink and brings up the rear when the herd moves away from danger.6. Play was rarely recorded.7. A challenge ritual is performed when herd stallions meet. When challenged by a herd stallion, a bachelor is submissive.8. Foals initially remain close to their mothers and have to learn the correct orientation when suckling. A single adoption was recorded.9. Individuals apparently recognise each other after long periods.10. Cape mountain zebras react to alarm signals of antelopes.11. The greater part of the day is devoted to grazing. A significantly greater percentage of the day is spent resting in winter than in summer. Cape mountain zebras mainly stand while resting, but resting in sternal or lateral recumbency also occurs. Defaecation and urination occurs throughout the day with no definite peaks.12. Grooming consists of localized muscle contractions, shaking, striking one part of the body against another or against the ground, rubbing, dust-bathing, scratching and nibbling.13. In cold weather, Cape mountain zebras seek shelter in wooded kloofs. Zusammenfassung * 1Bergzebras bilden Familien und Junggesellengruppen. Familien bestehen aus einem Hengst, 1–5 Stuten und deren Nachwuchs. Harems bleiben jahrelang unverändert. Wird der Hengst verdrängt, so bleiben die Stuten meist zusammen. Es besteht eine Rangordnung, doch führt nicht nur das dominante Tier. Fohlen verlassen die Familie mit durchschnittlich 21,9 Monaten. Der Familienhengst versucht, die Fohlen am Weggehen zu hindern. * 2Junggesellengruppen sind nicht so fest strukturiert wie die Familien, doch lassen sich Kerngruppen durch Hauptkomponentenanalyse identifizieren. Familienbeziehungen können für das Entstehen soldier Kerngruppen wichtig sein. Junggesellen können im Alter von ungefähr 5 Jahren Familienhengste werden. * 3Flucht ist offenbar die ausreichende Reaktion auf Drohung. Unterwürfiges Verhalten wurde nur bei Junggesellen beobachtet. Kämpfe sieht man selten. Bergzebras haben weniger Kommunikationslaute als Steppenzebras. Soziale Hautpflege findet meist zwischen Stute und Fohlen statt. PflegeIntentionsbewegungen können zur Streitschlichtung benutzt werden. * 4Rossige Stuten nehmen eine charakteristische Stellung ein. Flehmen kommt vor. Harn und Kot rossiger Stuten werden oft vom Hengst markiert. Erektion des Penis mit Zuckungen beim ruhenden Hengst kann entweder als Warnsignal oder als Masturbation gedeutet werden. * 5Der Hengst herdet die Mitglieder seiner Familie und bremst innerfamiliäre Aggression durch Drohen. Gewöhnlich führt er die Familie zur Tränke und verläßt als Letzter die Gefahrenzone. * 6Spielen wurde selten beobachtet. * 7Wenn Familienhengste sich treffen, findet ein Herausforderungs-Ritual statt. Junggesellen reagieren unterwürfig, wenn sie so herausgefordert werden. * 8Fohlen bleiben anfangs nahe bei der Mutter. Sie müssen die richtige Orientierung beim Säugen erlernen. Eine Adoption wurde registriert. * 9Individuen scheinen sich nach langer Zeit wiederzuerkennen. * 10Bergzebras reagieren auf die Alarmsignale von Antilopen. * 11Der größte Teil des Tages wird zum Grasen gebraucht. Im Winter gibt es signifikant längere Ruheperioden als im Sommer. Bergzebras ruhen meist stehend. Exkremente werden den ganzen Tag über ausgeschieden. Zur Körperpflege gehören örtliche Muskelkontraktionen, Schütteln, Schlagen eines Körperteils gegen einen anderen oder gegen den Boden, Reiben, Staubbaden, Kratzen und Knabbern. * 12Bei kaltem Wetter suchen Bergzebras in bewaldeten Schluchten Schutz. |
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Blackwell Publishing Ltd |
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Equine Behaviour @ team @ |
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5339 |
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Author |
Seyfarth, R.M.; Cheney, D.L. |
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Title |
Grooming, alliances and reciprocal altruism in vervet monkeys |
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1984 |
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Nature |
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Nature |
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308 |
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5959 |
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541-543 |
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*Altruism; Animals; Cercopithecus/*physiology; Cercopithecus aethiops/*physiology; *Grooming; *Social Behavior; Vocalization, Animal |
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Reciprocal altruism refers to the exchange of beneficial acts between individuals, in which the benefits to the recipient exceed the cost to the altruist. Theory predicts that cooperation among unrelated animals can occur whenever individuals encounter each other regularly and are capable of adjusting their cooperative behaviour according to experience. Although the potential for reciprocal altruism exists in many animal societies, most interactions occur between closely related individuals, and examples of reciprocity among non-kin are rare. The field experiments on vervet monkeys which we present here demonstrate that grooming between unrelated individuals increases the probability that they will subsequently attend to each others' solicitations for aid. Vervets appear to be more willing to aid unrelated individuals if those individuals have behaved affinitively toward them in the recent past. In contrast, recent grooming between close genetic relatives appears to have no effect on their willingness to respond to each other's solicitations for aid. |
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PMID:6709060 |
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refbase @ user @ |
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704 |
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DUNCAN P et al, |
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On lactation and associated behaviour in natural herd of horses |
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1984 |
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Anim Behav |
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Hans Klingels Equine Reference List |
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32 |
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255-263 |
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Developmental changes in time spent suckling and related mother-foal behaviour are described in an unmanaged herd of Camargue horses. Male foals spent about 40% more time suckling than females during the first 8 weeks. Body weight did not differ between the sexes but time-budgets did: males grazed less and were more active. If pregnant, the typical multiparous mare nursed her foals for 35–40 weeks, males and females alike, and weaned them 15 weeks before the next foaling. Primiparae lactated longer and weaned closer to the next foaling by 5 weeks. The mares played an active role in regulating the time spent suckling in early, and particularly in late lactation. |
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from Prof. |
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