| Records |
| Author |
Waite, T.A. |
| Title |
Interruptions improve choice performance in gray jays: prolonged information processing versus minimization of costly errors |
Type |
Journal Article |
| Year |
2002 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
5 |
Issue  |
4 |
Pages |
209-214 |
| Keywords |
Animals; *Behavior, Animal; *Choice Behavior; Female; Learning; Male; Models, Biological; Motivation; Reinforcement Schedule; Songbirds/*physiology; Time Factors |
| Abstract |
Under the assumption that selection favors minimization of costly errors, erroneous choice may be common when its fitness cost is low. According to an adaptive-choice model, this cost depends on the rate at which an animal encounters the choice: the higher this rate, the smaller the cost of choosing a less valuable option. Errors should thus be more common when interruptions to foraging are shorter. A previous experiment supported this prediction: gray jays, Perisoreus canadensis, were more error prone when subjected to shorter delays to access to food rewards. This pattern, though, is also predicted by an attentional-constraints model. Because the subjects were able to inspect the rewards during delays, their improved performance when subjected to longer delays could have been a byproduct of the experimentally prolonged opportunity for information processing. To evaluate this possibility, a follow-up experiment manipulated both delay to access and whether rewards could be inspected during delays. Depriving jays of the opportunity to inspect rewards (using opaque lids) induced only a small, nonsignificant increase in error rate. This effect was independent of length of delay and so the jays' improved performance when subjected to longer delays was not simply a byproduct of prolonged information processing. More definitively, even when the jays were prevented from inspecting rewards during delays, their performance improved when subjected to longer delays. The findings are thus consistent with the adaptive-choice model. |
| Address |
Department of Evolution, Ecology, and Organismal Biology, Ohio State University, 1735 Neil Avenue, Columbus, OH 43210-1293, USA. waite.1@osu.edu |
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| Language |
English |
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Series Issue |
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Edition |
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| ISSN |
1435-9448 |
ISBN |
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| Notes |
PMID:12461598 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2592 |
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| Author |
Goncalves, T.C.; Rocha, D.S.; Cunha, R.A. |
| Title |
Feeding patterns of Triatoma vitticeps in the State of Rio de Janeiro, Brazil |
Type |
Journal Article |
| Year |
2000 |
Publication |
Revista de Saude Publica |
Abbreviated Journal |
Rev Saude Publica |
| Volume |
34 |
Issue |
4 |
Pages |
348-352 |
| Keywords |
Animals; Brazil; Cattle; Chagas Disease/transmission; Dogs; Ecology; Feeding Behavior/physiology; Female; Food Habits/physiology; Humans; Insect Vectors/*physiology; Male; Triatoma/*physiology; *Trypanosoma cruzi/isolation & purification |
| Abstract |
OBJECTIVE: Feeding patterns of triatomines have contributed to elucidate its biology. Triatoma vitticeps, naturally infected with T. cruzi, has been found in domiciles. Its behavior and epidemiological patterns were investigated. METHODS: One-hundred and twenty two specimens of T. vitticeps were captured from February 1989 to April 1993 in two areas of Triunfo municipality, a subdistrict of Santa Maria Madalena municipal district, State of Rio de Janeiro, Brazil. The insects were dissected and their intestinal contents were removed and tested. It was used antisera from: man, cow, horse, dog, pig, armadillo, opossum, rodent, and bird. RESULTS: From the total analyzed, 79 were positive and 43 were negative to the nine antisera tested: armadillo (30.3%) > human and pig (13.1%) > bird and dog (11.5%) > horse (5.7%) > opossum (4.9%) > rodent (4. 1%) > cow (3.3%). Blood meals ranged from 0 to 4 and 6 in the following distribution: 0 = 25.41%; 1 = 45.08%; 2 = 10.66%; 3 = 6. 56%; 4 = 1.64%, and 6 = 0.82%. Nine of the 122 insects captured were not examined, 74 (65.54%) were positive for T. cruzi infection and 39 (34.51%) were negative. CONCLUSIONS: These results identified the T. vitticeps as being a sylvatic species and trypanosomiasis as being an enzootic disease. Epidemiological vigilance will be important to provide more information regarding the behavior of the species |
| Address |
Departamento de Entomologia, Instituto swaldo Cruz, Fiocruz, Rio de Janeiro, RJ, Brasil. tcmonte@gene.dbbm.fiocruz.br |
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English |
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| ISSN |
0034-8910 |
ISBN |
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| Notes |
PMID:10973153 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2650 |
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| Author |
Enileeva, N.K. |
| Title |
[Ecological characteristics of horse stomach botflies in Uzbekistan] |
Type |
Journal Article |
| Year |
1987 |
Publication |
Parazitologiia |
Abbreviated Journal |
Parazitologiia |
| Volume |
21 |
Issue |
4 |
Pages |
577-579 |
| Keywords |
Animals; Diptera/*physiology; Ecology; Female; Flight, Animal; Horses/*parasitology; Larva/physiology; Male; Population Dynamics; Uzbekistan |
| Abstract |
The paper describes the flight periods and dynamics of abundance of horse botflies, life span of females and males, effect of environmental factors on the activity of flies and their behaviour, potential fecundity of different species of botflies, duration of embryonal development, preservation of viability of larvae in egg membranes, localization of different stages of botflies in the host, and methods of their control. |
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Russian |
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Original Title |
Ekologicheskie osobennosti zheludochnykh ovodov loshadei v Uzbekistane |
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Edition |
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| ISSN |
0031-1847 |
ISBN |
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Medium |
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| Notes |
PMID:2958767 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2680 |
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| Author |
Strickman, D. |
| Title |
Notes on Tabanidae (Diptera) from Paraguay |
Type |
Journal Article |
| Year |
1982 |
Publication |
Journal of Medical Entomology |
Abbreviated Journal |
J Med Entomol |
| Volume |
19 |
Issue |
4 |
Pages |
399-402 |
| Keywords |
Animals; Cattle; Diptera/*growth & development; Dogs; Ecology; Female; Geography; Horses; Humans; Insect Bites and Stings/epidemiology/veterinary; Male; Paraguay |
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English |
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Edition |
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| ISSN |
0022-2585 |
ISBN |
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| Notes |
PMID:7154018 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2690 |
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| Author |
Wang, L.Y. |
| Title |
Host preference of mosquito vectors of Japanese encephalitis |
Type |
Journal Article |
| Year |
1975 |
Publication |
Zhonghua Minguo wei Sheng wu xue za zhi = Chinese Journal of Microbiology |
Abbreviated Journal |
Zhonghua Min Guo Wei Sheng Wu Xue Za Zhi |
| Volume |
8 |
Issue |
4 |
Pages |
274-279 |
| Keywords |
Animals; *Behavior, Animal; Birds/blood; *Culex; Ecology; Encephalitis, Japanese/*transmission; *Feeding Behavior; Female; Humans; *Insect Vectors; Mammals/blood; Species Specificity; Taiwan |
| Abstract |
The host preference of 4 Culex mosquito species collected in Miaoli and Pingtung counties, Taiwan was studied by capillary precipitin method. Antisera to alum-precipitated sera of man, bovine, swine, rabbit, horse, dog, cat, mouse, chicken, duck, and pigeon were produced in rabbits and reacted with 758 mosquito blood meals among which reactions to one or more antisera. Culex annulus and Culex tritaeniorhynchus summorosus showed a great avidity for pig, and Culex fuscocephala for bovine. Culex pipiens fatigans was ornithophilic. None of 110 C. t. summorosus and 2.4% of 223 C. annulus had fed on man. Among 66 samples of C.p. fatigans tested 10.3% had fed on man, while none of 359 C. fuscocephala did. It seems that the latter does not act as a primary vector of Japanese encephalitis. |
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English |
Summary Language |
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Series Issue |
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Edition |
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| ISSN |
0009-4587 |
ISBN |
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Conference |
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| Notes |
PMID:181218 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2702 |
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| Author |
Scherer, W.F.; Madalengoitia, J.; Flores, W.; Acosta, M. |
| Title |
Ecologic studies of Venezuelan encephalitis virus in Peru during 1970-1971 |
Type |
Journal Article |
| Year |
1975 |
Publication |
American Journal of Epidemiology |
Abbreviated Journal |
Am J Epidemiol |
| Volume |
101 |
Issue |
4 |
Pages |
347-355 |
| Keywords |
Animals; Antibodies, Viral; Cricetinae/immunology; Culicidae/microbiology; *Disease Vectors; Ecology; *Encephalitis Virus, Venezuelan Equine/immunology/isolation & purification; Encephalomyelitis, Equine/immunology/microbiology/transmission; Female; Hemagglutination Inhibition Tests; Horses/immunology; Humans; Neutralization Tests; Peru |
| Abstract |
Venezuelan encephalitis (VE) virus has intermittently produced epidemics and equine epizootics on the dry Pacific coastal plain of Peru since at least the 1930's. However, evidence that the virus exists in the Amazon region of Peru to the east of the Andes mountains was not obtained until antibodies were found in human sera collected in 1965, and 10 strains of the virus were isolated in a forest near the city of Iquitos, Peru during February and March 1971. Eight strains came from mosquitoes and two from dead sentinel hamsters. Three hamsters exposed in forests near Iquitos developed VE virus antibodies suggesting that hamster-benign strains also exist there. Antibody tests of equine sera revealed no evidence that VE virus was actively cycling during the late 1950's or 1960's in southern coastal Peru, where equine epizootics had occurred in the 1930's and 1940's. In northern coastal Peru bordering Ecuador, antibodies were present in equine sera, presumably residual from the 1969 outbreak caused by subtype I virus, since neutralizing antibody titers were higher to subtype I virus than to subtypes III or IV. No VE virus was detected in this northern region during the dry season of 1970 by use of sentinel hamsters. The possibility is considered that VE epidemics and equine epizootics on the Pacific coast of Peru are caused by movements of virus in infected vertebrates traversing Andean passes or in infected vertebrates or mosquitoes carried in airplanes from the Amazon region. |
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English |
Summary Language |
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Series Title |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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| ISSN |
0002-9262 |
ISBN |
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Medium |
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Conference |
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| Notes |
PMID:235838 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2705 |
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| Author |
Manning, G.S.; Ratanarat, C. |
| Title |
Fasciolopsis buski (Lankester, 1857) in Thailand |
Type |
Journal Article |
| Year |
1970 |
Publication |
The American Journal of Tropical Medicine and Hygiene |
Abbreviated Journal |
Am J Trop Med Hyg |
| Volume |
19 |
Issue |
4 |
Pages |
613-619 |
| Keywords |
Adolescent; Adult; Aged; Animals; Buffaloes; Cattle; Child; Child, Preschool; *Disease Reservoirs; Dogs; Ecology; *Fasciolidae; Feces; Female; Health Surveys; Horses; Humans; Infant; Infant, Newborn; Male; Middle Aged; *Plants, Edible; Sex Factors; *Snails; Swine; Thailand; Trematode Infections/*epidemiology |
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English |
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Series Issue |
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Edition |
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| ISSN |
0002-9637 |
ISBN |
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| Notes |
PMID:5425498 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2734 |
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| Author |
Fagot, J.; Wasserman, E.A.; Young, M.E. |
| Title |
Discriminating the relation between relations: the role of entropy in abstract conceptualization by baboons (Papio papio) and humans (Homo sapiens) |
Type |
Journal Article |
| Year |
2001 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
27 |
Issue |
4 |
Pages |
316-328 |
| Keywords |
Animals; Behavior, Animal; Choice Behavior; Cognition/physiology; *Discrimination (Psychology); Discrimination Learning; *Entropy; Female; Humans; Judgment/*physiology; Male; Papio |
| Abstract |
Two baboons (Papio papio) successfully learned relational matching-to-sample: They picked the choice display that involved the same relation among 16 pictures (same or different) as the sample display, although the sample display shared no pictures with the choice displays. The baboons generalized relational matching behavior to sample displays created from novel pictures. Further experiments varying the number of sample pictures and the mixture of same and different sample pictures suggested that entropy plays a key role in the baboons' conceptual behavior. Two humans (Homo sapiens) were similarly trained and tested; their behavior was both similar to and different from the baboons' behavior. The results suggest that animals other than humans and chimpanzees can discriminate the relation between relations. They further suggest that entropy detection may underlie same-different conceptualization, but that additional processes may participate in human conceptualization. |
| Address |
Comparative Cognition Research Group, Center for Research in Cognitive Neurosciences, 31 Chemin Joseph Aiguier, 13402 Marseille, France. fagot@lnf.cnrs-mrs.fr |
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English |
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Series Issue |
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Edition |
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| ISSN |
0097-7403 |
ISBN |
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| Notes |
PMID:11676083 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2772 |
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| Author |
Tommasi, L.; Vallortigara, G. |
| Title |
Searching for the center: spatial cognition in the domestic chick (Gallus gallus) |
Type |
Journal Article |
| Year |
2000 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
26 |
Issue |
4 |
Pages |
477-486 |
| Keywords |
Animals; Behavior, Animal/physiology; Chickens; Cognition/*physiology; Learning/physiology; Male; Space Perception/*physiology; Spatial Behavior/*physiology |
| Abstract |
Chicks learned to find food hidden under sawdust by ground-scratching in the central position of the floor of a closed arena. When tested inan arena of identical shape but a larger area, chicks searched at 2 different locations, one corresponding to the correct distance (i.e., center) in the smaller (training) arena and the other to the actual center of the test arena. When tested in an arena of the same shape but a smaller area, chicks searched in the center of it. These results suggest that chicks are able to encode information on the absolute and relative distance of the food from the walls of the arena. After training in the presence of a landmark located at the center of the arena, animals searched at the center even after the removal of the landmark. Marked changes in the height of the walls of the arena produced some displacement in searching behavior, suggesting that chicks used the angular size of the walls to estimate distances. |
| Address |
Department of General Psychology, University of Padua, Italy |
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English |
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0097-7403 |
ISBN |
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| Notes |
PMID:11056887 |
Approved |
no |
| Call Number |
Equine Behaviour @ team @ |
Serial |
2774 |
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| Author |
Cynx, J.; Hulse, S.H.; Polyzois, S. |
| Title |
A psychophysical measure of pitch discrimination loss resulting from a frequency range constraint in European starlings (Sturnus vulgaris) |
Type |
Journal Article |
| Year |
1986 |
Publication |
Journal of Experimental Psychology. Animal Behavior Processes |
Abbreviated Journal |
J Exp Psychol Anim Behav Process |
| Volume |
12 |
Issue |
4 |
Pages |
394-402 |
| Keywords |
Animals; *Birds; Cognition; Female; *Generalization, Stimulus; Male; *Pitch Discrimination; Psychoacoustics; Transfer (Psychology) |
| Abstract |
Earlier research (Hulse & Cynx, 1985) revealed that a number of species of songbirds acquired a pitch discrimination between rising and falling sequences in an arbitrarily defined training range of frequencies, but then failed to generalize the discrimination to new frequency ranges--a frequency range constraint. The two experiments here provide a psychophysical estimate of how pitch discrimination deteriorated in one species as sequences were stepped out from the training range. The gradient showing loss of discrimination was much sharper than would have been anticipated by stimulus generalization or the training procedures, and appeared unaffected by the removal of rising and falling frequency information. The frequency range constraint and its psychophysical properties have implications both for the analysis of birdsong and the study of animal cognition. |
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English |
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Abbreviated Series Title |
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Series Issue |
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Edition |
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0097-7403 |
ISBN |
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| Notes |
PMID:3772303 |
Approved |
no |
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Equine Behaviour @ team @ |
Serial |
2786 |
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