Records |
Author |
Stout, I.J.; Clifford, C.M.; Keirans, J.E.; Portman, R.W. |
Title |
Dermacentor variabilis (Say) (Acarina: Ixodidae) established in southeastern Washington and northern Idaho |
Type |
Journal Article |
Year |
1971 |
Publication |
Journal of Medical Entomology |
Abbreviated Journal |
J Med Entomol |
Volume |
8 |
Issue |
2 |
Pages |
143-147 |
Keywords |
Animals; Arthropod Vectors; Disease Reservoirs/*epidemiology; Dogs; Ecology; Female; Horses; Humans; Idaho; Larva; Male; Seasons; Sheep; Tick Infestations/*epidemiology/veterinary; Ticks/*classification; Washington; Zoonoses |
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0022-2585 |
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PMID:5157834 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
2729 |
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Author |
Gácsi, M.; Miklósi, Á.; Varga, O.; Topál, J.; Csányi, V. |
Title |
Are readers of our face readers of our minds? Dogs (Canis familiaris) show situation-dependent recognition of human's attention |
Type |
Journal Article |
Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
7 |
Issue |
3 |
Pages |
144-153 |
Keywords |
Animals; Association Learning; *Attention; Bonding, Human-Pet; Cognition; *Concept Formation; Cues; Dogs/*psychology; *Facial Expression; Female; Humans; Male; *Nonverbal Communication; *Recognition (Psychology); Social Behavior |
Abstract |
The ability of animals to use behavioral/facial cues in detection of human attention has been widely investigated. In this test series we studied the ability of dogs to recognize human attention in different experimental situations (ball-fetching game, fetching objects on command, begging from humans). The attentional state of the humans was varied along two variables: (1) facing versus not facing the dog; (2) visible versus non-visible eyes. In the first set of experiments (fetching) the owners were told to take up different body positions (facing or not facing the dog) and to either cover or not cover their eyes with a blindfold. In the second set of experiments (begging) dogs had to choose between two eating humans based on either the visibility of the eyes or direction of the face. Our results show that the efficiency of dogs to discriminate between “attentive” and “inattentive” humans depended on the context of the test, but they could rely on the orientation of the body, the orientation of the head and the visibility of the eyes. With the exception of the fetching-game situation, they brought the object to the front of the human (even if he/she turned his/her back towards the dog), and preferentially begged from the facing (or seeing) human. There were also indications that dogs were sensitive to the visibility of the eyes because they showed increased hesitative behavior when approaching a blindfolded owner, and they also preferred to beg from the person with visible eyes. We conclude that dogs are able to rely on the same set of human facial cues for detection of attention, which form the behavioral basis of understanding attention in humans. Showing the ability of recognizing human attention across different situations dogs proved to be more flexible than chimpanzees investigated in similar circumstances. |
Address |
Comparative Ethology Research Group, Hungarian Academy of Sciences, Pazmany P. 1/c., 1117, Budapest, Hungary. gm.art@axelero.hu |
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1435-9448 |
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PMID:14669075 |
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no |
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Equine Behaviour @ team @ |
Serial |
2547 |
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Author |
Feuerstein, N.; Terkel, J. |
Title |
Interrelationships of dogs (Canis familiaris) and cats (Felis catus L.) living under the same roof |
Type |
Journal Article |
Year |
2008 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
Volume |
113 |
Issue |
1-3 |
Pages |
150-165 |
Keywords |
Cats; Dogs; Shared home; Interrelationship; Aggression; Amicability; Indifference; Adaptation |
Abstract |
In the process of domestication, dogs (Canis familiaris) and cats (Felis catus) have undergone thousands of years of genetic changes that have adapted them to the human environment. Both species have acquired a global distribution and it has become quite common to find homes with the two living side by side. Nevertheless, there is widespread belief that interspecific communication between dogs and cats is problematic, stemming from their separate evolutionary development and different social structures. Consequently, many people considering possible adoption of both species are concerned about their ability to get along. Interrelationships of dogs and cats living together were studied here in an attempt to determine the main factors influencing the type of relationship likely to develop between the two species. Two approaches were used: (1) a questionnaire completed by owners of both dog(s) and cat(s), which provided a broad database of the animals' behaviors; and (2) observations carried out in participants' homes on their dog-cat interactions. Two separate ethograms for dogs and cats served for analyses of their body language. The findings revealed the following: Both species showed a similar ability to establish a relatively amicable relationship with the other species; the animals' gender had little influence on the nature of their interrelationship; and adoption of the cat prior to the dog appears to conduce to establishing an amicable relationship, as does their first encounter taking place at an early age (up to 6 months of age in cats and up to 1 year in dogs). The findings also suggest that the majority of these dogs and cats understood the particular body language displayed by one animal that has an opposite meaning for the other species; and that the earlier the age of first encounter between the two, the better this understanding. It can be concluded that exposure of both species at an early age to the presence of the other facilitates the learning of each other's body language, and the consequent establishment of an amicable relationship. A better understanding of the various factors that contribute to determining the two species' relationship should not only improve the quality of life of these pets, but also reassure and encourage more people to adopt both cat and dog. |
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0168-1591 |
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Equine Behaviour @ team @ |
Serial |
4757 |
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Author |
Virányi, Z.; Topál, J.; Gácsi, M.; Miklósi, Á.; Csányi, V. |
Title |
Dogs respond appropriately to cues of humans' attentional focus |
Type |
Journal Article |
Year |
2004 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
Volume |
66 |
Issue |
2 |
Pages |
161-172 |
Keywords |
Animals; *Attention; Bonding, Human-Pet; Communication; *Cues; Dogs; Humans; Recognition (Psychology) |
Abstract |
Dogs' ability to recognise cues of human visual attention was studied in different experiments. Study 1 was designed to test the dogs' responsiveness to their owner's tape-recorded verbal commands (Down!) while the Instructor (who was the owner of the dog) was facing either the dog or a human partner or none of them, or was visually separated from the dog. Results show that dogs were more ready to follow the command if the Instructor attended them during instruction compared to situations when the Instructor faced the human partner or was out of sight of the dog. Importantly, however, dogs showed intermediate performance when the Instructor was orienting into 'empty space' during the re-played verbal commands. This suggests that dogs are able to differentiate the focus of human attention. In Study 2 the same dogs were offered the possibility to beg for food from two unfamiliar humans whose visual attention (i.e. facing the dog or turning away) was systematically varied. The dogs' preference for choosing the attentive person shows that dogs are capable of using visual cues of attention to evaluate the human actors' responsiveness to solicit food-sharing. The dogs' ability to understand the communicatory nature of the situations is discussed in terms of their social cognitive skills and unique evolutionary history. |
Address |
Department of Ethology, Eotvos Lorand University, Budapest, Hungary. zsofi.viranyi@freemail.hu |
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0376-6357 |
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Notes |
PMID:15110918 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
4957 |
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Author |
Dreschel, N.A.; Granger, D.A. |
Title |
Methods of collection for salivary cortisol measurement in dogs |
Type |
Journal Article |
Year |
2009 |
Publication |
Hormones and Behavior |
Abbreviated Journal |
Horm. Behav. |
Volume |
55 |
Issue |
1 |
Pages |
163-168 |
Keywords |
Dog; Canine; Salivary cortisol; Methods; Measurement; Stress |
Abstract |
Salivary cortisol has been increasingly used as a measure of stress response in studies of welfare, reaction to stress and human–animal interactions in dogs and other species. While it can be a very useful measure, there are a number of saliva collection issues made evident through studies in the human and animal fields which have not been investigated in the canine species. Collection materials and the volume of saliva that is collected; the use of salivary stimulants; and the effect of food contamination can all dramatically impact cortisol measurement, leading to spurious results. In order to further examine the limitations of the collection method and the effects of collection material and salivary stimulant on salivary cortisol levels, a series of clinical, in vitro and in vivo studies were performed. It was found that there is a large amount of inter- and intra-individual variation in salivary cortisol measurement. Beef flavoring of collection materials leads to unpredictable variability in salivary cortisol concentration. Using salivary stimulants such as citric acid also has the potential to affect cortisol concentration measurement in saliva. Hydrocellulose appears to be a useful collection material for salivary cortisol determination. Recommendations for collection materials and use of salivary stimulants are presented. |
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0018-506x |
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no |
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Equine Behaviour @ team @ |
Serial |
5560 |
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Author |
Prato-Previde, E.; Marshall-Pescini, S.; Valsecchi, P. |
Title |
Is your choice my choice` The owners effect on pet dogs? ( Canis lupus familiaris ) performance in a food choice task |
Type |
Journal Article |
Year |
2008 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
Volume |
11 |
Issue |
1 |
Pages |
167-174 |
Keywords |
Dog – Dog-owner relationship – Food choice task – Quantity discrimination |
Abstract |
Abstract This study investigates the influence of owners on their dogs performance in a food choice task using either different or equal quantities of food. Fifty-four pet dogs were tested in three different conditions. In Condition 1 we evaluated their ability to choose between a large and small amount of food (quantity discrimination task). In Condition 2 dogs were again presented with a choice between the large and small food quantity, but only after having witnessed their owner favouring the small quantity. In Condition 3 dogs were given a choice between two equally small quantities of food having witnessed their owner favouring either one or the other. A strong effect of the owner on the dogs`` performance was observed. In Condition 1 dogs as a group chose significantly more often the large food quantity, thus showing their ability to solve the quantity discrimination task. After observing their owner expressing a preference for the small food quantity they chose the large quantity of food significantly less than in the independent choice situation. The tendency to conform to the owner`s choice was higher when the dogs had to choose between equally small quantities of food (Condition 3) rather than between a large and a small one (Condition 2). These results provide evidence that dogs can be influenced by their owners even when their indications are clearly in contrast with direct perceptual information, thus leading dogs to ultimately make counterproductive choices. |
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Admin @ knut @ |
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4216 |
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Author |
McHugh, C.P. |
Title |
Ecology of a semi-isolated population of adult Anopheles freeborni: abundance, trophic status, parity, survivorship, gonotrophic cycle length, and host selection |
Type |
Journal Article |
Year |
1989 |
Publication |
The American Journal of Tropical Medicine and Hygiene |
Abbreviated Journal |
Am J Trop Med Hyg |
Volume |
41 |
Issue |
2 |
Pages |
169-176 |
Keywords |
Aging/physiology; Animals; Anopheles/*physiology; Breeding; California; Cattle/parasitology; Dogs/parasitology; Ecology; Feeding Behavior/physiology; Female; Horses/parasitology; Host-Parasite Relations; Male; Parity; Population Density; Rabbits/parasitology |
Abstract |
A population of adult Anopheles freeborni near Sheridan, CA was sampled daily during 13 August-7 September 1984. Data on abundance, trophic status, and gonotrophic age were recorded. Abundance and gonotrophic age data were analyzed to estimate daily survivorship and gonotrophic cycle length. Daily survivorship for unfed mosquitoes was estimated to be 0.72 with a gonotrophic cycle of 6 days duration. Daily survivorship for bloodfed mosquitoes was estimated to be 0.74 with a gonotrophic cycle of 4 days. The 2 day difference in gonotrophic cycles between unfed and bloodfed mosquitoes was the result of the period required for maturation and mating of teneral females. In 1986, an incage release of field-collected females estimated survivorship at 0.75 per day. Precipitin tests of 1,338 blood-engorged mosquito abdomens indicated that bovids, horses, rabbits, and canids comprised 92% of bloodmeals; no bloodmeals of human origin were detected. |
Address |
Department of Entomology, University of California, Davis |
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0002-9637 |
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PMID:2774063 |
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no |
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Equine Behaviour @ team @ |
Serial |
2673 |
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Author |
Schwab, C.; Huber, L. |
Title |
Obey or not obey? Dogs (Canis familiaris) behave differently in response to attentional states of their owners |
Type |
Journal Article |
Year |
2006 |
Publication |
Journal of Comparative Psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
Volume |
120 |
Issue |
3 |
Pages |
169-175 |
Keywords |
Animals; *Attention; Awareness; *Bonding, Human-Pet; *Cooperative Behavior; Cues; Dogs/*psychology; Humans; Motivation; *Nonverbal Communication; Social Perception; *Speech Perception; *Verbal Behavior |
Abstract |
Sixteen domestic dogs (Canis familiaris) were tested in a familiar context in a series of 1-min trials on how well they obeyed after being told by their owner to lie down. Food was used in 1/3 of all trials, and during the trial the owner engaged in 1 of 5 activities. The dogs behaved differently depending on the owner's attention to them. When being watched by the owner, the dogs stayed lying down most often and/or for the longest time compared with when the owner read a book, watched TV, turned his or her back on them, or left the room. These results indicate that the dogs sensed the attentional state of their owners by judging observable behavioral cues such as eye contact and eye, head, and body orientation. |
Address |
Department for Behavior, Neurobiology and Cognition, University of Vienna, Vienna, Austria. cpriberskyschwab@yahoo.de |
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0735-7036 |
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PMID:16893253 |
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no |
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Equine Behaviour @ team @ |
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4961 |
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Author |
Chilton, N.B. |
Title |
The use of nuclear ribosomal DNA markers for the identification of bursate nematodes (order Strongylida) and for the diagnosis of infections |
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Journal Article |
Year |
2004 |
Publication |
Animal Health Research Reviews / Conference of Research Workers in Animal Diseases |
Abbreviated Journal |
Anim Health Res Rev |
Volume |
5 |
Issue |
2 |
Pages |
173-187 |
Keywords |
Animals; Birds; Cats; DNA Primers; DNA, Helminth/*analysis; DNA, Ribosomal/*analysis; Dogs; Horses; Molecular Diagnostic Techniques/veterinary; Ruminants; Strongylida/*genetics; Strongylida Infections/diagnosis/*veterinary |
Abstract |
Many bursate nematodes are of major importance to animal health. Animals are often parasitized by multiple species that differ in their prevalence, relative abundance and/or pathogenicity. Implementation of effective management strategies for these parasites requires reliable methods for their detection in hosts, identification to the species level and measurement of intensity of infection. One major problem is the difficulty of accurately identifying and distinguishing many species of bursate nematode because of the remarkable morphological similarity of their eggs and larvae. The inability to identify, with confidence, individual nematodes (irrespective of their life-cycle stage) to the species level by morphological methods has often led to a search for species-specific genetic markers. Studies over the past 15 years have shown that sequences of the internal transcribed spacers of ribosomal DNA provide useful genetic markers, providing the basis for the development of PCR-based diagnostic tools. Such molecular methods represent powerful tools for studying the systematics, epidemiology and ecology of bursate nematodes and, importantly, for the specific diagnosis of infections in animals and humans, thus contributing to improved control and prevention strategies for these parasites. |
Address |
Department of Biology, University of Saskatchewan, 112 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada. neil.chilton@usask.ca |
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1466-2523 |
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PMID:15984323 |
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no |
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Equine Behaviour @ team @ |
Serial |
2628 |
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Author |
Branson, N.J.; Rogers, L.J. |
Title |
Relationship between paw preference strength and noise phobia in Canis familiaris |
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Journal Article |
Year |
2006 |
Publication |
Journal of Comparative Psychology |
Abbreviated Journal |
J. Comp. Psychol. |
Volume |
120 |
Issue |
3 |
Pages |
176-183 |
Keywords |
noise phobia; lateralization; paw preference; dog; fear |
Abstract |
The authors investigated the relationship between degree of lateralization and noise phobia in 48 domestic dogs (Canis familiaris) by scoring paw preference to hold a food object and relating it to reactivity to the sounds of thunderstorms and fireworks, measured by playback and a questionnaire. The dogs without a significant paw preference were significantly more reactive to the sounds than the dogs with either a left-paw or right-paw preference. Intense reactivity, therefore, is associated with a weaker strength of cerebral lateralization. The authors note the similarity between their finding and the weaker hand preferences shown in humans suffering extreme levels of anxiety and suggest neural mechanisms that may be involved. (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
Address |
Branson, N. J.: Centre for Neuroscience and Animal Behavior, School of Biological, Biomedical and Molecular Sciences, University of New England, Armidale, NSW, Australia, nbranson@une.edu.au |
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US: American Psychological Association |
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1939-2087 (Electronic); 0735-7036 (Print) |
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Equine Behaviour @ team @ 2006-09888-002 |
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5384 |
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