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| Author |
Kaplan, G.; Rogers, L.J. |
| Title |
Patterns of Gazing in Orangutans (Pongo pygmaeus) |
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Journal Article |
| Year |
2002 |
Publication |
International Journal of Primatology |
Abbreviated Journal |
Int. J. Primatol. |
| Volume |
23 |
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3 |
Pages |
501-526 |
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| Abstract |
Eyes play an important role in communication amongst humans and animals. However, relatively little is known about specific differences in eye morphology amongst primates and how these features might be associated with social structure and direction of gaze. We present a detailed study of gazing and eye morphology-exposed sclera and surrounding features in orangutans. We measured gazing in rehabilitating orangutans in two contexts: interspecific viewing of the experimenter (with video camera) and intraspecific gazing (between subjects). Our findings show that direct staring is avoided and social looking is limited to certain age/social categories: juveniles engage in more looking at other orangutans than do adults or infants. While orangutans use eye movements in social communication, they avoid the more prolonged mutual gaze that is characteristic of humans, and also apparent in chimpanzees and gorillas. Detailed frame-by-frame analysis of videotapes from field and zoo studies of orangutans revealed that they pay visual attention to both human observers and conspecifics by glancing sideways, with the head turned at an angle away from the subject being observed. Mutual gaze was extremely rare, and we have observed only two incidences of gaze following. Orangutans in captivity appear to use a more restricted pattern of gazes compared to free-living, rehabilitating ones, possibly suggesting the presence of a pathological condition (such as depression) in the captive subjects. Our findings have implications for further investigations of social communication and cognition in orangutans. |
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Equine Behaviour @ team @ |
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3398 |
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Desire L.; Boissy A.; Veissier I. |
| Title |
Emotions in farm animals: – a new approach to animal welfare in applied ethology |
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2002 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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60 |
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165-180 |
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3482 |
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Appleby M. |
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Consciousness, Cognition and Animal Welfare – J.K. Kirkwood, R.C. Hubrecht, S. Wickens, H. O'Leary, S. Oakley (Eds.), Universities Federation for Animal Welfare, 2001, 251 pp., Paperback, Supplement to Volume 10 of Animal Welfare, 15/US$ 30, ISSN 0962-7286 |
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2002 |
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Applied Animal Behaviour Science |
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Appl. Anim. Behav. Sci. |
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77 |
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239-241 |
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3485 |
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Tavares M.C.H.; Tomaz C. |
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Working memory in capuchin monkeys (Cebus apella) |
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2002 |
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Behavioural Brain Research |
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Behav. Brain. Res. |
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131 |
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131-137 |
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3486 |
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Bingman V.P.; Able K.P. |
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Maps in birds: representational mechanisms and neural bases |
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Journal Article |
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2002 |
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Current Opinion in Neurobiology |
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Curr. Opin. Neurobiol. |
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12 |
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745-750 |
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3503 |
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Kurtzman H.S.; Church R.M.; Crystal J.D. |
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Data archiving for animal cognition research: Report of an NIMH workshop |
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2002 |
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Animal Learning & Behavior |
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30 |
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405-412 |
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3504 |
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Kemp S.M. |
| Title |
Operationalizing situated cognition and learning |
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2002 |
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Cognitive Systems Research |
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3 |
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361-383 |
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3505 |
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Dyson, S. |
| Title |
Lameness and poor performance in the sport horse: Dressage, show jumping and horse trials |
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Journal Article |
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2002 |
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Journal of Equine Veterinary Science |
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22 |
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4 |
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145-150 |
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3957 |
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Bello, T.R. |
| Title |
Practical treatment of body and open leg wounds of horses with bovine collagen, biosynthetic wound dressing and cyanoacrylate |
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Journal Article |
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2002 |
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Journal of Equine Veterinary Science |
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22 |
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4 |
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157-164 |
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Horses with severe and deep lacerations are represented by ten cases in which treatment emphasized the use of bovine collagen preparations to promote controlled second-degree repair. Traumatized areas were tarsal, metatarsal, neck, forearm, metacarpal and pastern. Wound size changes were recorded. Depending on the wound type, the site was treated with antibiotic-steroid ointment, organic acid cream, sterile collagen particles, suspension or dressings protected by hydrogel dressing, non-adherent pads, occlusive skin dressings, roll gauze and elastic tape. In three cases, a fiberglas cast was applied over a hind leg wound and lacerated tendon for stability. When controlled granulation of the deeper wounds reached skin level, the area often was stabilized by only cyanoacrylate spray. As these cases presented a wide range of trauma each with a unique history, healing rates were based on initial measurements. An overall progression of wound reduction occurred at a predictable rate. The exogenous collagen formulations were used to stimulate controlled granulation, ie. to “jump start” the healing process. Collagen particles, suspension or dressings were packed into depressions, placed under suture lines, secured over abraded tissue, and placed under protective bandage or cast. To further evaluate the use of cyanoacrylate tissue spray in wound treatments, an additional ten cases are presented. The variety of wounds were produced experimentally in Center-owned ponies or provided as clinical cases. Wound size changes and healing progress were recorded. Wounds occurred on the neck, abdomen, metacarpal, metatarsal, fetlock and pastern areas. Depending on wound type, the site was treated with cyanoacrylate only; or treated as above until controlled granulation attained skin level. In one case punch grafts of skin were transferred from one foreleg to the opposite with the horse standing. Cyanoacrylate spray provided a water proof barrier protecting the wound from dirt, debris and insects as well as stabilizing full-thickness skin lacerations by bridging normal to traumatized skin allowing uninterrupted granulation and epithelialization. The use of a neck cradle prevented wound disturbance and stall confinement aided stabilization. |
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3972 |
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Andersen, N.H.; Norgaard, A.; Jensen, T.J.; Ulstrup, J. |
| Title |
Sequential unfolding of the two-domain protein Pseudomonas stutzeri cytochrome c4 |
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Journal Article |
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2002 |
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Journal of Inorganic Biochemistry |
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88 |
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3-4 |
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316-327 |
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P. stutzeri cytochrome c4; Sequential unfolding; Di-haem protein; Unfolding |
| Abstract |
P. stutzeri cytochrome c4 is a di-haem protein, composed of two globular domains each with His-Met coordinated haem, and a hydrogen bond network between the domains. The domain foldings are highly symmetric but with specific differences including structural differences of ligand coordination, and different spin states of the oxidised haem groups. We have studied unfolding of oxidised P. stutzeri cyt c4 induced thermally and by chemical denaturants. Horse heart cyt c was a reference molecule. Isothermal unfolding induced by guanidinium chloride and acid was followed by Soret, α/β, and 701-nm band absorption, and by far-UV circular dichroism spectroscopy. Multifarious patterns emerge, but the two domains clearly unfold sequentially. One phase, assigned to unfolding of the N-terminal domain, proceeds at guanidinium concentrations up to [approximate]1.0 M. This is followed by two overlapping phases at higher concentrations. The intermediate state maintains Fe-Met coordination, assigned to the C-terminal domain. Interdomain interaction is reflected in decreasing values of the cooperativity parameters. Differential scanning calorimetry shows a single peak, but two peaks appear when guanidinium chloride up to 0.4 M is present. This reflects different chemical action in chemical and thermal unfolding. Acid-induced unfolding kinetics was addressed by pH jumps using diode array stopped-flow techniques. Three kinetic phases in the 701 nm Fe-Met marker band, and four phases in the Soret and α/β bands, spanning 4-1000 ms could be distinguished on pH jumps from 7.5 to the range 2.5-3.5. In this range of time and pH cyt c appears to unfold in no more than two phases. Spectral properties of the kinetic intermediates could be identified. Sequential domain unfolding, formation of high-spin states, and an intermediate state with Fe-Met coordination to a single haem group are features of the unfolding kinetics. |
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3973 |
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