| Records |
| Author |
Dalmau, A.; Ferret, A.; Chacon, G.; Manteca, X. |
Title  |
Seasonal Changes in Fecal Cortisol Metabolites in Pyrenean Chamois |
Type |
Journal Article |
| Year |
2007 |
Publication |
Journal of Wildlife Management |
Abbreviated Journal |
J Wildl Manag |
| Volume |
71 |
Issue |
1 |
Pages |
190-194 |
| Keywords |
Cadí-Moixeró, Nature Reserve, chamois, cortisol metabolites, feces, hunting reserve, Pyrenees, Rupicapra pyrenaica pyrenaica, seasonal rhythm, stress |
| Abstract |
We studied seasonal changes in fecal cortisol metabolites (FCM), which have been widely used as indicators of stress, in a population of Pyrenean chamois (Rupicapra pyrenaica pyrenaica) in the Cadí Range of northeastern Spain. We collected fecal samples from 2001 to 2003 in 3 particular locations with different altitudes and male or female presence, and we analyzed them for FCM and fecal nitrogen as an indicator of diet quality. We observed a clear seasonal pattern, with the highest FCM in winter, and we obtained correlations between FCM and monthly mean minimum temperatures and fecal nitrogen. We observed no effects of tourism presence, trophy hunting, or rut season on FCM. Analysis of cortisol metabolites in feces can be a good measure of winter stress in Pyrenean chamois. |
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Equine Behaviour @ team @ |
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4254 |
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Piccione, G.; Caola, G.; Refinetti, R. |
| Title |
Temporal relationships of 21 physiological variables in horse and sheep |
Type |
Journal Article |
| Year |
2005 |
Publication |
Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology |
Abbreviated Journal |
Comp Biochem Physiol A Mol Integr Physiol |
| Volume |
142 |
Issue |
4 |
Pages |
389-396 |
| Keywords |
Animals; Behavior, Animal/physiology; Blood Glucose/physiology; Body Temperature/*physiology; Circadian Rhythm/*physiology; Female; Horses/*physiology; Melatonin/blood/*physiology; Motor Activity/*physiology; Rectum/physiology; Sheep/*physiology; Time Factors |
| Abstract |
Daily or circadian oscillation has been documented in a variety of physiological and behavioral processes. Although individual variables have been studied in great detail, very few studies have been conducted on the temporal relationships between the rhythms of different variables. It is not known whether the circadian pacemaker generates each and every rhythm individually or whether most rhythms are simply derived from a few clock-controlled rhythms. As a first step in elucidating this issue, 21 physiological variables were recorded simultaneously in horse and sheep. The results indicated that, in both species, different variables exhibit different degrees of daily rhythmicity and reach their daily peaks at different times of the day. The variables exhibiting strongest rhythmicity were locomotor activity, rectal temperature, and plasma concentrations of melatonin and glucose. Comparison of rhythmicity and acrophase in the various rhythms allowed inferences to be made about mechanisms of causation. |
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Dipartimento di Morfologia, Biochimica, Fisiologia e Produzioni Animali, Facolta di Medicina Veterinaria, Universita degli Studi di Messina, 98168 Messina, Italy |
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English |
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1095-6433 |
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PMID:16290083 |
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1884 |
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Stahlbaum, C.C.; Houpt, K.A. |
| Title |
The role of the Flehmen response in the behavioral repertoire of the stallion |
Type |
Journal Article |
| Year |
1989 |
Publication |
Physiology & behavior |
Abbreviated Journal |
Physiol. Behav. |
| Volume |
45 |
Issue |
6 |
Pages |
1207-1214 |
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Animals; Behavior, Animal/*physiology; Circadian Rhythm; Discrimination (Psychology)/physiology; Estrus; Feces; Female; Horses/*physiology; Male; Sexual Behavior, Animal/*physiology; Smell/*physiology; Taste/physiology; Urine |
| Abstract |
The role of the Flehmen response in equine behavior was investigated under field and laboratory conditions. In Experiment 1, a field study made of five stallions on pasture with between three and eighteen mares each during the season indicated the following: 1) The Flehmen response was most frequently preceded by nasal, rather than oral, investigation of substances; 2) The stallions' rate of Flehmen varied with the estrous cycles of the mares; 3) The rate of Flehmen response did not show a variation with time of day; and 4) The Flehmen response was most frequently followed by marking behaviors rather than courtship behaviors. The results suggest that the Flehmen response is not an immediate component of sexual behavior, e.g., courtship of the stallion but may be involved in the overall monitoring of the mare's estrous cycle. Therefore the Flehmen response may contribute to the chemosensory priming of the stallion for reproduction. In Experiment 2 stallions were presented with urine or feces of mares in various stages of the reproductive cycle as well as with their own or other males' urine or feces. The occurrence of sniffing and Flehmen was used to determine the discriminatory ability of the stallions. Stallions can differentiate the sex of a horse on the basis of its feces alone, but cannot differentiate on the basis of urine. This ability may explain the function of fecal marking behavior of stallions. |
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New York State College of Veterinary Medicine, Cornell University, Ithaca 14853 |
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0031-9384 |
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PMID:2813545 |
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refbase @ user @ |
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44 |
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Petruso, E.J.; Fuchs, T.; Bingman, V.P. |
| Title |
Time-space learning in homing pigeons (Columba livia): orientation to an artificial light source |
Type |
Journal Article |
| Year |
2007 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
10 |
Issue |
2 |
Pages |
181-188 |
| Keywords |
Animals; Circadian Rhythm; Columbidae/*physiology; Homing Behavior/physiology; Learning/*physiology; *Light; Orientation/*physiology; Space Perception/*physiology; Time Perception/*physiology |
| Abstract |
Time-space learning reflects an ability to represent in memory event-stimulus properties together with the place and time of the event; a capacity well developed in birds. Homing pigeons were trained in an indoor octagonal arena to locate one food goal in the morning and a different food goal in the late afternoon. The goals differed with respect to their angular/directional relationship to an artificial light source located outside the arena. Further, the angular difference in reward position approximated the displacement of the sun's azimuth that would occur during the same time period. The experimental birds quickly learned the task, demonstrating the apparent ease with which birds can adopt an artificial light source to discriminate among alternative spatial responses at different times of the day. However, a novel midday probe session following successful learning revealed that the light source was interpreted as a stable landmark and not as a surrogate sun that would support compass orientation. Probe sessions following a phase shift of the light-dark cycle revealed that the mechanism employed to make the temporal discrimination was prevailingly based on an endogenous circadian rhythm and not an interval timing mechanism. |
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Department of Psychology and J.P. Scott Center for Neuroscience, Mind and Behavior Bowling Green State University, Bowling Green, OH 43403, USA |
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1435-9448 |
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PMID:17160343 |
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Equine Behaviour @ team @ |
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2432 |
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Lomas, C.A.; Piggins, D.; Phillips, C.J.C. |
| Title |
Visual awareness |
Type |
Journal Article |
| Year |
1998 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
| Volume |
57 |
Issue |
3-4 |
Pages |
247-257 |
| Keywords |
Visual awareness; Colour vision; Rhythm |
| Abstract |
Awareness varies between different species and humans can never truly appreciate what it is like to be another individual, either of the same species or another. Visual perceptual faculties provide some evidence of the extent to which domesticated animals derive information from objects in their environment, whilst changes in behaviour resulting from different visual stimuli can also provide valuable information on the state of visual awareness. Extensive processing of potentially visual information must occur in all domesticated species, but is much less well understood than purely sensory based information. For example, sensory aspects of colour vision are reasonably well understood, but the role of wavelength variables in an animal's cognition and its colour experience is not clear. Considerable use is made of diurnal changes in photoperiod to synchronise endogenous rhythms to particular times of the day and the year. Variation in light intensity in natural images is also important for social reasons for animals to be able to discriminate between, e.g., different faces, but little is known about intensity preferences or the effects of intensity on behaviour. It appears likely that in many cases visual stimuli represent some of the most important influences on an animal's awareness, either alone or in combination with, e.g., olfactory cues. However, a much greater understanding of their processing is required before we can make useful deductions about visual awareness in domesticated animals. |
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Equine Behaviour @ team @ |
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4309 |
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Krzak, W.E.; Gonyou, H.W.; Lawrence, L.M. |
| Title |
Wood chewing by stabled horses: diurnal pattern and effects of exercise |
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Journal Article |
| Year |
1991 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
| Volume |
69 |
Issue |
3 |
Pages |
1053-1058 |
| Keywords |
Animal Feed; Animals; *Behavior, Animal; *Circadian Rhythm; Female; Horses/*physiology; Male; *Mastication; *Physical Conditioning, Animal; Sodium Chloride/administration & dosage; Videotape Recording; Wood |
| Abstract |
Nine yearling horses, stabled in individual stalls, were used in a trial to determine the diurnal pattern of wood chewing and the effects of exercise on this behavior. The trial was a Latin square design conducted over three 2-wk periods during which each horse was exposed to each of the three following treatments: 1) no exercise (NE), 2) exercise after the morning feeding (AM), and 3) exercise in the afternoon (PM). Horses were fed a complete pelleted feed in the morning and both pelleted feed and long-stemmed hay in the afternoon. Exercise consisted of 45 min on a mechanical walker followed by 45 min in a paddock with bare soil. Each stall was equipped with two untreated spruce boards during each period for wood chewing. Wood chewing was evaluated by videotaping each horse for 22 h during each period, determining the weight and volume of the boards before and after each period, and by visual appraisal of the boards. Intake of trace mineralized salt was also measured. Wood chewing occurred primarily between 2200 and 1200. All measures of wood chewing were correlated when totals for the entire 6 wk were analyzed. When analysis was performed on 2-wk values, videotape results were not correlated with volume or weight loss of boards. Horses chewed more when on the NE treatment (511 s/d) than when on AM or PM (57 and 136 s/d, respectively; P less than .05). Salt intake tended to be greater for NE than for the other treatments (P less than .10).(ABSTRACT TRUNCATED AT 250 WORDS) |
| Address |
Dept. of Anim. Sci., University of Illinois, Urbana 61801 |
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English |
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0021-8812 |
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PMID:2061237 |
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refbase @ user @ |
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1949 |
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