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Author |
Barros, A.T. |
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Title |
Seasonality and relative abundance of Tabanidae (Diptera) captured on horses in the Pantanal, Brazil |
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Journal Article |
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Year |
2001 |
Publication |
Memorias do Instituto Oswaldo Cruz |
Abbreviated Journal |
Mem Inst Oswaldo Cruz |
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Volume |
96 |
Issue  |
7 |
Pages |
917-923 |
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Keywords |
Animals; Brazil; Climate; Diptera/classification/*physiology; Ecology; Horses/*parasitology; Population Dynamics; Seasons; Species Specificity |
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Abstract |
Once a month, from June 1992 to May 1993, collections of tabanids on horse were conducted in the Nhecolandia, Pantanal State of Mato Grosso do Sul, Brazil. Tabanid catches using hand nets were conducted from sunrise to sunset at grassland and cerradao (dense savanna) habitats. A total of 3,442 tabanids from 21 species,12 genera, and 3 subfamilies were collected. Although species abundance varied seasonally depending on habitat, no habitat specificity was observed for the most abundant species. In the grassland, 1,625 (47.2%) tabanids belonging to 19 species were collected, while 1,817 (52.8%) tabanids from 17 species were caught in the cerradao. The number of tabanid species varied from 7 during winter (July/August) to 15 in the spring (October). Tabanus importunus (56%) was the most abundant species, followed by T. occidentalis (8.2%), and T. claripennis (8.1%). The tabanid peak, in October, coincided with the beginning of the rainy season. The population peak of most species, including those with higher vector potential, suggests that the rainy season can be considered as the period of potentially higher risk of mechanical transmission of pathogens by tabanids to horses in the region. |
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Embrapa Pantanal, 79320-900 Corumba, MS, Brasil. thadeu@cpap.embrapa.br |
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0074-0276 |
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PMID:11685255 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2644 |
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Author |
Henry, S.; Richard-Yris, M.-A.; Hausberger, M. |
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Title |
Influence of various early human-foal interferences on subsequent human-foal relationship |
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Journal Article |
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Year |
2006 |
Publication |
Developmental psychobiology |
Abbreviated Journal |
Dev Psychobiol |
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Volume |
48 |
Issue |
8 |
Pages |
712-718 |
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Keywords |
Animal Husbandry/methods; Animals; Animals, Newborn/*psychology; Animals, Suckling/*psychology; Behavior, Animal; Female; *Handling (Psychology); Horses/*psychology; Humans; Mothers/psychology; *Object Attachment; Species Specificity |
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Abstract |
Whereas the way animals perceive human contact has been particularly examined in pet animals, a small amount of investigations has been done in domestic ungulates. It was nevertheless assumed that, as pet animals, non-aggressive forms of tactile contact were as well rewarding or positive for these species, even though the features of intraspecific relationships in pet animals and domestic ungulates may be to some extent different.We test here the hypothesis that horses may not consider physical handling by humans as a positive event. When comparing different early human-foal interactions, we found that early exposure to a motionless human enhanced slightly foals reactions to humans whereas forced stroking or handling in early life did not improve later human-foal relation. Foals that were assisted during their first suckling (e.g., brought to the dam's teat) even tended to avoid human approach at 2 weeks, and physical contact at 1 month of age.We argue that interspecies differences may exist in how tactile stimulation is perceived. It may be important for the establishment of a bond that a young animal is active in the process and able, through its behavioral responses, to help define what is positive for it. This way of investigation may have important general implications in how we consider the development of social relations, both within and between species. |
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UMR CNRS 6552, Ethologie-Evolution-Ecologie, Universite de Rennes 1, Avenue du General Leclerc, Campus de Beaulieu, F-35042 Rennes Cedex, France. severine.henry@univ-rennes1.fr |
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0012-1630 |
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PMID:17111402 |
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1781 |
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Author |
Blazyczek, I.; Hamann, H.; Deegen, E.; Distl, O.; Ohnesorge, B. |
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Title |
Retrospective analysis of 50 cases of guttural pouch tympany in foals |
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Journal Article |
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Year |
2004 |
Publication |
The Veterinary Record |
Abbreviated Journal |
Vet. Rec. |
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Volume |
154 |
Issue |
9 |
Pages |
261-264 |
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Keywords |
Animals; Female; Germany/epidemiology; Horse Diseases/*surgery; Horses; Male; Pharyngeal Diseases/epidemiology/surgery/*veterinary; Retrospective Studies; Severity of Illness Index; Species Specificity |
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Between 1994 and 2001, guttural pouch tympany was diagnosed in 51 foals; there were approximately three times as many fillies as colts, of Arabian, different German warmblood breeds and Western horse breeds. There were significantly more Arabian and paint horse foals than expected in comparison with the breed distribution of the foals hospitalised at the Clinic for Horses. The foals' breed and sex did not influence the age of onset, the type and severity of the clinical signs or the recurrence rate. A surgical laser technique was used on 50 of the foals; in 35 cases only one surgical treatment was necessary, in seven cases a second operation was required during the foal's initial period of hospitalisation, and in eight cases a second operation was performed during a second period of hospitalisation. Long-term follow-up information was obtained for 44 of the 50 treated horses; 24 of them were under two years of age and 20 were over two years of age. In six horses, no follow-up information was available. Four horses were euthanased for reasons unrelated to the condition or its treatment. The horses over two years of age were in training or were being used for competitions in dressage or jumping or for breeding purposes, and in only one of them was an adventitious respiratory noise reported. All the horses up to two years of age were reported to be healthy. |
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Institute of Animal Breeding and Genetics, School of Veterinary Medicine Hannover, Buenteweg 17p, D-30559 Hannover, Germany |
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ISSN |
0042-4900 |
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PMID:15029964 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
3719 |
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Author |
Traversa, D.; Giangaspero, A.; Iorio, R.; Otranto, D.; Paoletti, B.; Gasser, R.B. |
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Title |
Semi-nested PCR for the specific detection of Habronema microstoma or Habronema muscae DNA in horse faeces |
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Journal Article |
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Year |
2004 |
Publication |
Parasitology |
Abbreviated Journal |
Parasitology |
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Volume |
129 |
Issue |
Pt 6 |
Pages |
733-739 |
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Keywords |
Animals; DNA, Helminth/*analysis; DNA, Ribosomal Spacer/*chemistry; Feces/*chemistry; Female; Horse Diseases/*diagnosis/parasitology; Horses; Male; Polymerase Chain Reaction/*methods; Species Specificity; Spirurida Infections/diagnosis/*veterinary; Spiruroidea/*genetics |
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Habronema microstoma and Habronema muscae (Spirurida: Habronematidae) are parasitic nematodes which infect the stomach and/or skin of equids. The accurate diagnosis of gastric habronemosis is central to studying its epidemiology, but data on its distribution and prevalence are lacking, mainly due to the limitations of clinical and coprological diagnosis in live horses. To overcome this constraint, a two-step, semi-nested PCR-based assay was validated (utilizing genetic markers in the nuclear ribosomal DNA) for the specific amplification of H. microstoma or H. muscae DNA from the faeces from horses (n = 46) whose gastrointestinal parasite status had been determined at autopsy and whose faeces were examined previously using a conventional parasitological approach. Of these horses examined at autopsy, some harboured adults of either H. microstoma (n= 19) or H. muscae (n =4), and others (n = 7) harboured both species. Most of them were also infected with other parasites, including strongylid nematodes (subfamilies Cyathostominae and Strongylinae), bots and/or cestodes; there was no evidence of metazoan parasites in 2 horses. Larvated spirurid eggs were detected in the faeces of 1 of the 30 horses (3.3 %) shown to be infected with Habronema at autopsy. For this set of 46 samples, the PCR assay achieved a diagnostic specificity of 100 % and a sensitivity of approximately 97 % (being able to specifically detect as little as approximately 0.02 fg of Habronema DNA). The specificity of the assay was also tested using a panel of control DNA samples representing horse, the gastric spirurid Draschia megastoma and 26 other species of parasites from the alimentary tract of the horse. H. microstoma, H. muscae and D. megastoma could be readily differentiated from one another based on the sizes of their specific amplicons in the PCR. The results of this study showed that the performance of the PCR for the diagnosis of gastric habronemosis was similar to that of autopsy but substantially better than the traditional coprological examination procedure used. The ability to specifically diagnose gastric habronemosis in equids should have important implications for investigating the epidemiology and ecology of H. microstoma and H. muscae. |
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Department of Biomedical Comparative Sciences, Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy. traversa@unite.it |
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0031-1820 |
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Notes |
PMID:15648696 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2631 |
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