Dynamics of Fasciola hepatica transmission in the Andean Patagonian valleys, Argentina
We described the transmission dynamics of Fasciola hepatica at its southern distribution range. Studies of prevalence and egg output in cattle and population dynamics and infection in snails were performed in a farm in the Andean Patagonian valleys, Argentina, between December 1998 and February 2002...
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2007
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| LEADER | 18815caa a22017537a 4500 | ||
|---|---|---|---|
| 001 | PAPER-6620 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518203619.0 | ||
| 008 | 190411s2007 xx ||||fo|||| 00| 0 eng|d | ||
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| 024 | 7 | |2 cas |a Anthelmintics | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 030 | |a VPARD | ||
| 100 | 1 | |a Kleiman, F. | |
| 245 | 1 | 0 | |a Dynamics of Fasciola hepatica transmission in the Andean Patagonian valleys, Argentina |
| 260 | |c 2007 | ||
| 270 | 1 | 0 | |m Kleiman, F.; Unidad de Ecología de Reservorios y Vectores de Parásitos, Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina; email: fkleiman@ege.fcen.uba.ar |
| 506 | |2 openaire |e Política editorial | ||
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| 520 | 3 | |a We described the transmission dynamics of Fasciola hepatica at its southern distribution range. Studies of prevalence and egg output in cattle and population dynamics and infection in snails were performed in a farm in the Andean Patagonian valleys, Argentina, between December 1998 and February 2002. Snail surveys were conducted from spring to autumn. Infection was diagnosed coprologically in the whole herd at the beginning and end of the study, and in a cohort of heifers at the beginning and end of 2001. A twice-a-year anthelmintic treatment was implemented in 1999. The relationship of the variables mentioned above with temperature and rainfall was determined. Lymnaea viatrix showed a life-span of about 15 months and an annual pattern of population dynamics. Specimens were frequently found in temporary environments and lagoons, and rarely in streams. Snail abundance and soil-water availability were directly related in temporary environments and inversely related in lagoons. Overall prevalence in L. viatrix was 0.67% (range: 0.9-14%) and infection was detected in summer and autumn. At the beginning of the study, calves were the least infected age group (15%). Prevalences and median egg counts in grazing animals were similar at the beginning (heifers: 81%, 3.3 epg; cows: 60%, 1.3 epg) and end of the study (heifers and cows: around 51%, 1 epg). Likewise, the prevalence in the cohort of heifers remained similar (around 40%) between surveys. Transmission to cattle was highly effective despite of the short activity period and the low infection rate of snails, and the regular anthelminthic treatment. There would be two seasonal transmission peaks, one in summer-autumn, when infected snails were present, and the other in early spring due to overwintering metacercariae. Some recommendations based on the climatic conditions of the region are provided to minimize snail infection and ultimately to reduce the incidence of fasciolosis in cattle. © 2007 Elsevier B.V. All rights reserved. |l eng | |
| 536 | |a Detalles de la financiación: Agencia Nacional de Promoción Científica y Tecnológica, BID 1201 OC-AR PICT No. 08830 | ||
| 536 | |a Detalles de la financiación: Universidad de Buenos Aires | ||
| 536 | |a Detalles de la financiación: Secretaría de Ciencia y Técnica, Universidad de Buenos Aires | ||
| 536 | |a Detalles de la financiación: Financial support was provided by the Agencia Nacional de Promoción Científica y Tecnológica (BID 1201 OC-AR PICT No. 08830) and Universidad de Buenos Aires Grant UBACYT, PID 2001–2002, EX 145. We are grateful to Establecimiento Los Murmullos for providing field facilities and to the Departamento de Microbiología, Parasitología e Inmunología de la Facultad de Medicina, Universidad de Buenos Aires for providing laboratory facilities. Special thanks are due to Dr. Margarita Ostrowski de Núñez for her help in the systematics of trematode larvae, to Dr. Wladimir Lobato Paraense for the specific identification of lymnaeid snails, to Lic. Linus Spatz for his valuable help throughout this work, to Lucas Bukata and Rafael Lim for technical assistance, and to Dr. Darío Vezzani for his valuable comments. | ||
| 593 | |a Unidad de Ecología de Reservorios y Vectores de Parásitos, Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina | ||
| 690 | 1 | 0 | |a ANDEAN PATAGONIAN VALLEYS |
| 690 | 1 | 0 | |a CATTLE |
| 690 | 1 | 0 | |a EPIDEMIOLOGY |
| 690 | 1 | 0 | |a FASCIOLA HEPATICA |
| 690 | 1 | 0 | |a LYMNAEA VIATRIX |
| 690 | 1 | 0 | |a ANTHELMINTIC AGENT |
| 690 | 1 | 0 | |a RAIN |
| 690 | 1 | 0 | |a ARTICLE |
| 690 | 1 | 0 | |a AUTUMN |
| 690 | 1 | 0 | |a CATTLE |
| 690 | 1 | 0 | |a CLIMATE |
| 690 | 1 | 0 | |a COHORT ANALYSIS |
| 690 | 1 | 0 | |a DYNAMICS |
| 690 | 1 | 0 | |a FASCIOLA HEPATICA |
| 690 | 1 | 0 | |a FASCIOLIASIS |
| 690 | 1 | 0 | |a GEOGRAPHIC DISTRIBUTION |
| 690 | 1 | 0 | |a HEIFER |
| 690 | 1 | 0 | |a LIFESPAN |
| 690 | 1 | 0 | |a LYMNAEA |
| 690 | 1 | 0 | |a LYMNAEA VIATRIX |
| 690 | 1 | 0 | |a METACERCARIA |
| 690 | 1 | 0 | |a NONHUMAN |
| 690 | 1 | 0 | |a OVERWINTERING |
| 690 | 1 | 0 | |a PARASITE IDENTIFICATION |
| 690 | 1 | 0 | |a PARASITE TRANSMISSION |
| 690 | 1 | 0 | |a POPULATION DYNAMICS |
| 690 | 1 | 0 | |a PREVALENCE |
| 690 | 1 | 0 | |a SEASONAL VARIATION |
| 690 | 1 | 0 | |a SPRING |
| 690 | 1 | 0 | |a SUMMER |
| 690 | 1 | 0 | |a TEMPERATURE DEPENDENCE |
| 690 | 1 | 0 | |a ANIMAL HUSBANDRY |
| 690 | 1 | 0 | |a ANIMALS |
| 690 | 1 | 0 | |a ANTHELMINTICS |
| 690 | 1 | 0 | |a CATTLE |
| 690 | 1 | 0 | |a CATTLE DISEASES |
| 690 | 1 | 0 | |a FASCIOLA HEPATICA |
| 690 | 1 | 0 | |a FASCIOLIASIS |
| 690 | 1 | 0 | |a FEMALE |
| 690 | 1 | 0 | |a POPULATION DYNAMICS |
| 690 | 1 | 0 | |a SEASONS |
| 690 | 1 | 0 | |a SNAILS |
| 690 | 1 | 0 | |a TIME FACTORS |
| 690 | 1 | 0 | |a ANIMALIA |
| 690 | 1 | 0 | |a BOS |
| 690 | 1 | 0 | |a FASCIOLA HEPATICA |
| 690 | 1 | 0 | |a GASTROPODA |
| 690 | 1 | 0 | |a LYMNAEA VIATRIX |
| 651 | 4 | |a ARGENTINA | |
| 651 | 4 | |a ARGENTINA | |
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| 700 | 1 | |a Pietrokovsky, S. | |
| 700 | 1 | |a Prepelitchi, L. | |
| 700 | 1 | |a Carbajo, A.E. | |
| 700 | 1 | |a Wisnivesky-Colli, C. | |
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