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Author |
Walker, M.L.; Becklund, W.W. |
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Title |
Occurrence of a cattle eyeworm, Thelazia gulosa (Nematoda: Thelaziidae), in an imported giraffe in California and T. lacrymalis in a native horse in Maryland |
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Journal Article |
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Year |
1971 |
Publication |
The Journal of Parasitology |
Abbreviated Journal |
J Parasitol |
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Volume |
57 |
Issue  |
6 |
Pages |
1362-1363 |
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Keywords |
Animals; *Animals, Zoo; Artiodactyla; California; Ecology; Eye Diseases/epidemiology/*veterinary; Female; Horse Diseases/*epidemiology; Horses; Male; Maryland; Nematode Infections/epidemiology/*veterinary; Spiruroidea/*classification |
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0022-3395 |
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PMID:5157171 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2725 |
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Author |
Bertram, D.S. |
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Title |
Mosquitoes of British Honduras, with some comments on malaria, and on arbovirus antibodies in man and equines |
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Journal Article |
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Year |
1971 |
Publication |
Transactions of the Royal Society of Tropical Medicine and Hygiene |
Abbreviated Journal |
Trans R Soc Trop Med Hyg |
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Volume |
65 |
Issue |
6 |
Pages |
742-762 |
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Keywords |
Aedes; Animals; Anopheles; Antibodies/*analysis; Arbovirus Infections/*epidemiology/immunology/veterinary; Belize; Culex; *Culicidae/classification; Ecology; Encephalitis Virus, St. Louis/immunology; Encephalitis Virus, Venezuelan Equine/immunology; Horse Diseases/*epidemiology/immunology; Horses; Humans; Insect Vectors; Malaria/*epidemiology; Neutralization Tests; Seasons |
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0035-9203 |
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PMID:4400502 |
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no |
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Equine Behaviour @ team @ |
Serial |
2732 |
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Author |
Blokland, A. |
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Title |
Reaction time responding in rats |
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Journal Article |
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Year |
1998 |
Publication |
Neuroscience and Biobehavioral Reviews |
Abbreviated Journal |
Neurosci Biobehav Rev |
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Volume |
22 |
Issue |
6 |
Pages |
847-864 |
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Keywords |
Amphetamine/pharmacology; Animals; Behavior, Animal/drug effects/*physiology; Conditioning, Operant/drug effects/*physiology; Dopamine Uptake Inhibitors/pharmacology; Dose-Response Relationship, Drug; Male; Rats; Rats, Inbred Lew; Reaction Time/drug effects/*physiology |
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Abstract |
The use of reaction time has a great tradition in the field of human information processing research. In animal research the use of reaction time test paradigms is mainly limited to two research fields: the role of the striatum in movement initiation; and aging. It was discussed that reaction time responding can be regarded as “single behavior”, this term was used to indicate that only one behavioral category is measured, allowing a better analysis of brain-behavior relationships. Reaction time studies investigating the role of the striatum in motor functions revealed that the initiation of a behavioral response is dependent on the interaction of different neurotransmitters (viz. dopamine, glutamate, GABA). Studies in which lesions were made in different brain structures suggested that motor initiation is dependent on defined brain structures (e.g. medialldorsal striatum, prefrontal cortex). It was concluded that the use of reaction time measures can indeed be a powerful tool in studying brain-behavior relationships. However, there are some methodological constraints with respect to the assessment of reaction time in rats, as was tried to exemplify by the experiments described in the present paper. On the one hand one should try to control for behavioral characteristics of rats that may affect the validity of the parameter reaction time. On the other hand, the mean value of reaction time should be in the range of what has been reported in man. Although these criteria were not always met in several studies, it was concluded that reaction time can be validly assessed in rats. Finally, it was discussed that the use of reaction time may go beyond studies that investigate the role of the basal ganglia in motor output. Since response latency is a direct measure of information processing this parameter may provide insight into basic elements of cognition. Based on the significance of reaction times in human studies the use of this dependent variable in rats may provide a fruitful approach in studying brain-behavior relationships in cognitive functions. |
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Department of Psychology, University of Maastricht, The Netherlands |
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ISSN |
0149-7634 |
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Notes |
PMID:9809315 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2807 |
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Author |
Steinhoff, H.J. |
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Title |
A continuous wave laser T-jump apparatus and its application to chemical reactions in hemoglobin single crystals |
Type |
Journal Article |
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Year |
1988 |
Publication |
Journal of Biochemical and Biophysical Methods |
Abbreviated Journal |
J Biochem Biophys Methods |
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Volume |
15 |
Issue |
6 |
Pages |
319-330 |
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Keywords |
Animals; Chemistry; Crystallization; *Heat; *Hemoglobins; Horses/blood; *Lasers; Methemoglobin; Solutions; Thermodynamics; Thiocyanates |
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Abstract |
A laser temperature jump apparatus is constructed where the T-jump is achieved by means of the direct absorption of continuous laser radiation of low intensity by a solid sample. The final temperature in the irradiated volume element is reached when the absorbed radiation power equals the dissipation of heat by heat conduction. The time range from the beginning of irradiation to the stationary state depends on the geometry of the irradiated volume element and is less than 10 ms. The heating laser beam is simultaneously used to detect the relaxation to the new chemical equilibrium in the sample. Relaxation processes with relaxation rates between 10(2) s-1 and less than 10(-3) s-1 on samples with volumes less than 10(-3) mm3 may be investigated using this T-jump method. One application of this method is the determination of reaction rates of ligand reactions in hemoglobin single crystals. Rate constants obtained for the reaction of thiocyanate with crystallized horse methemoglobin are presented. |
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Address |
Institut fur Biophysik, Ruhr-Universitat Bochum, F.R.G |
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English |
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ISSN |
0165-022X |
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Notes |
PMID:3379245 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
3804 |
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Author |
Trim, C.M.; Moore, J.N.; Clark, E.S. |
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Title |
Renal effects of dopamine infusion in conscious horses |
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Journal Article |
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Year |
1989 |
Publication |
Equine veterinary journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
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Volume |
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Issue |
7 |
Pages |
124-128 |
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Keywords |
Animals; Blood Pressure/drug effects/physiology; Consciousness/*physiology; Creatinine/blood; Dopamine/administration & dosage/*pharmacology; Dose-Response Relationship, Drug; Female; Heart Rate/drug effects/physiology; Horses/*physiology; Infusions, Intravenous/veterinary; Kidney/blood supply/*drug effects/physiology; Osmolar Concentration; Potassium/blood; Random Allocation; Regional Blood Flow/drug effects/physiology; Renal Artery/drug effects/physiology/ultrasonography; Sodium/blood; Time Factors; Ultrasonography/methods/veterinary; Urination/physiology |
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Abstract |
An ultrasonic flow probe was implanted around a branch of the left renal artery in five horses. The effects of dopamine were studied in the unsedated horses 10 days after surgery. Three experiments, separated by at least two days, were performed in random order on each horse. In two experiments, dopamine was infused intravenously for 60 mins at either 2.5 and 5.0 micrograms/kg bodyweight (bwt)/min. Saline was infused for 60 mins before and after each infusion, and for 180 mins in the third experiment as a control. Renal blood flow increased during administration of dopamine at both dose rates (P = 0.0001). Urine volume increased (P = 0.055), and osmolality decreased (P < 0.05), with infusion of dopamine at 5.0 micrograms/kg bwt/min. Arterial blood pressure and heart rate were not significantly affected. Fractional excretions of sodium and potassium were not significantly changed with dopamine infusion. The higher dopamine dose rate was accompanied by dysrhythmias in some horses. |
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Address |
Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens 30602, USA |
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Notes |
PMID:9118094 |
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no |
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Call Number |
refbase @ user @ |
Serial |
99 |
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Author |
Wittemyer, G.; Getz, W.M. |
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Title |
A likely ranking interpolation for resolving dominance orders in systems with unknown relationships |
Type |
Journal Article |
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Year |
2006 |
Publication |
Behaviour |
Abbreviated Journal |
Behaviour |
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Volume |
143 |
Issue |
7 |
Pages |
909-930 |
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Keywords |
DOMINANCE HIERARCHY; ALGORITH; SOCIAL AGONISTIC INTERACTIONS |
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Abstract |
n many animal systems agonistic interactions may be rare or not overt, particularly where such interactions are costly or of high risk as is common for large mammals. We present a technique developed specifically for resolving an optimized dominance order of individuals in systems with transitive (i.e. linear) dominance relationships, but where not all relationships are known. Our method augments the widely used I&SI method (de Vries, 1998) with an interpolation function for resolving the relative ranks of individuals with unknown relationships. Our method offers several advantages over other dominance methods by enabling the incorporation of any proportion of unknown relationships, resolving a unique solution to any dominance matrix, and calculating cardinal dominance strengths for each individual. As such, this method enables novel insight into difficult to study behavioural systems. |
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no |
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Call Number |
refbase @ user @ |
Serial |
438 |
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Author |
Hazem, A.S. |
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Title |
[Collective review: Salmonella paratyphi in animals and in the environment] |
Type |
Journal Article |
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Year |
1978 |
Publication |
DTW. Deutsche Tierarztliche Wochenschrift |
Abbreviated Journal |
Dtsch Tierarztl Wochenschr |
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Volume |
85 |
Issue |
7 |
Pages |
296-303 |
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Keywords |
Animals; Animals, Domestic; Animals, Wild; Bird Diseases/epidemiology; Brachyura; Cat Diseases/epidemiology; Cats; Cattle; Cattle Diseases/epidemiology; Dog Diseases/epidemiology; Dogs; Ecology; Environment; Fish Diseases/epidemiology; Germany, West; Horse Diseases/epidemiology; Horses; Mollusca; Poultry Diseases/epidemiology; Salmonella Infections, Animal/*epidemiology; *Salmonella paratyphi A; Sheep; Sheep Diseases/epidemiology; Snails; Swine; Swine Diseases/epidemiology |
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German |
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Sammelreferat: Salmonella paratyphi bei Tieren und in der Umwelt |
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0341-6593 |
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PMID:352661 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2698 |
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Author |
Anderson, T.M.; McIlwraith, C.W.; Douay, P. |
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Title |
The role of conformation in musculoskeletal problems in the racing Thoroughbred |
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Journal Article |
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Year |
2004 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
36 |
Issue |
7 |
Pages |
571-575 |
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Keywords |
Animals; Carpus, Animal/anatomy & histology/physiology; Horse Diseases/etiology/*pathology/surgery; Horses/*anatomy & histology/injuries/physiology; Likelihood Functions; Logistic Models; Muscle, Skeletal/*anatomy & histology/pathology; Musculoskeletal Diseases/pathology/surgery/*veterinary; Tarsus, Animal/anatomy & histology/physiology; Treatment Outcome |
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Abstract |
REASONS FOR PERFORMING STUDY: The relationship of conformation to future potential injury is a standard approach in practise but, at present, is largely based on subjective observations. OBJECTIVE: To measure conformation in 3-year-old Thoroughbreds and objectively test its relationship with the occurrence of musculoskeletal problems. METHODS: Conformation measurements were taken from photographs using specific reference points marked on the horses and processed on the computer. Clinical observations were recorded for each horse on a regular basis. Stepwise (forward) logistic regression analysis was performed to investigate the relationship between the binary response of the clinical outcomes probability and the conformation variables by the method of maximum likelihood. RESULTS: Clinical outcomes significantly (P<0.05) associated with conformational variables included effusion of the front fetlock, effusion of the right carpus, effusion of the carpus, effusion of the hind fetlock, fracture of the left or right carpus, right front fetlock problem and hind fetlock problem. CONCLUSIONS: Offset knees (offset ratio) contributed to fetlock problems. Long pasterns increased the odds of a fracture in the front limb. An increase in the carpal angle as viewed from the front (carpal valgus) may serve as a protective mechanism, as the odds for a carpal fracture and carpal effusion decreased with an increase in the carpal angle. POTENTIAL RELEVANCE: This study demonstrates relationships between conformation and musculoskeletal disease in the racehorse. The information may be useful in selection and management of the racing Thoroughbred. |
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Colorado State University, Equine Science and Equine Orthopaedic Research Programs, Fort Collins, Colorado 80523, USA |
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ISSN |
0425-1644 |
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Notes |
PMID:15581320 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
3697 |
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Author |
Hebenbrock, M.; Due, M.; Holzhausen, H.; Sass, A.; Stadler, P.; Ellendorff, F. |
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Title |
A new tool to monitor training and performance of sport horses using global positioning system (GPS) with integrated GSM capabilities |
Type |
Journal Article |
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Year |
2005 |
Publication |
DTW. Deutsche Tierarztliche Wochenschrift |
Abbreviated Journal |
Dtsch Tierarztl Wochenschr |
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Volume |
112 |
Issue |
7 |
Pages |
262-265 |
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Keywords |
Animals; Heart Rate; Horses/*physiology; *Physical Conditioning, Animal; Population Surveillance; *Satellite Communications; Telemetry/methods/*veterinary |
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Abstract |
Global Positioning Systems (GPS) are considered suitable to monitor the position and velocity of horses during cross-country competition or in training. Furthermore, simultaneous recording of life data such as heart rate could be useful to assess the horse's condition during exercise. To test the suitability and reliability of a commercially available GPS system with integrated heart rate recording system and with built in GSM for data transmission, the Fidelak Equipilot Type EP-2003-15/G-2.11 (EP-15/G) was evaluated first for reliability of pulse recording from a pulse generator within the physiological range of horses; furthermore distance, velocity and heart rate recordings were carried out on a standard 1000 m field track with five repetitions. Agreement (% deviation from actually measured distance and from stopwatch-distance based velocity calculations) and variability (Coefficient of Variation for distance, velocity, heart rate) were calculated. From the results it was safe to assume that the heart rate sensor recorded horse heart rates at a high degree of accuracy. Overall distances and velocities are in high agreement with actually measured values. However, overall variability expressed in terms of relative variability (C.V.) is smaller for distance recording (C.V. 0.68%) when compared to velocity (C.V. 1.01%). The system tested is suitable and reliable for simultaneously recording of distance, velocity and heart rates for horses during cross country exercise. GPS-based monitoring of movement along with simultaneous recording of physiological data and the possibility to call upon data will not only be of benefit for training horses or for surveillance during competition, it may also be suitable for distant patient monitoring and in behavioural studies as well as in veterinary medicine in general. |
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Institute for Animal Breeding Mariensee, Federal Agricultural Research Centre (FAL), Neustadt, Germany |
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0341-6593 |
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Notes |
PMID:16124700 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4035 |
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Author |
Bergstrom, C.T.; Lachmann, M. |
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Title |
Signaling among relatives. III. Talk is cheap |
Type |
Journal Article |
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Year |
1998 |
Publication |
Proceedings of the National Academy of Sciences of the United States of America |
Abbreviated Journal |
Proc. Natl. Acad. Sci. U.S.A. |
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Volume |
95 |
Issue |
9 |
Pages |
5100-5105 |
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Keywords |
Animal Communication; Animals; Costs and Cost Analysis; *Evolution; Interpersonal Relations; Models, Biological |
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Abstract |
The Sir Philip Sidney game has been used by numerous authors to show how signal cost can facilitate honest signaling among relatives. Here, we demonstrate that, in this game, honest cost-free signals are possible as well, under very general conditions. Moreover, these cost-free signals are better for all participants than the previously explored alternatives. Recent empirical evidence suggests that begging is energetically inexpensive for nestling birds; this finding led some researchers to question the applicability of the costly signaling framework to nestling begging. Our results show that cost-free or inexpensive signals, as observed empirically, fall within the framework of signaling theory. |
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Department of Biological Sciences, Stanford University, Stanford, CA 94305, USA. carl@charles.stanford.edu |
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0027-8424 |
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Notes |
PMID:9560235 |
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no |
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Call Number |
refbase @ user @ |
Serial |
561 |
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