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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
03/05/2023 |
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Autoria: |
LEVINE, N. D.; TODD JUNIOR, K. S. |
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Título: |
Micrometeorological factors involved in development and survival of free-living stages of the sheep nematodes Haemonchus contortus and Trichostrongylus colubriformis. A review. |
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Ano de publicação: |
1975 |
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Fonte/Imprenta: |
International Journal of Biometeorology, v. 19, n. 3, p. 174-183, Nov. 1975. |
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DOI: |
10.1007/BF01460016 |
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Idioma: |
Inglês |
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Conteúdo: |
Temperature and soil moisture are the most important factors affecting the development and survival of Haemonchus contortus and Trichostrongylus columbriformis eggs and larvae on pasture. More than half of the eggs develop into infective larvae in the laboratory, but a very low percentage (0.03% for H. contortus) does so on pasture. There is a marked difference between H. contortus and T. colubriformis in survival of infective larvae. H. contortus larvae survived in the winter at Urbana poorly, whereas T. colubriformis did well. The former survived better than the latter in the spring and worse in the summer, while both survived equally well in the fall. Technics for larval recovery from pasture are not very efficient. Meteorologic conditions at ground level where the larvae exist are quite different from those in a standard weather shelter 1.6 m above the ground. Bioclimatographs in which mean monthly maximum temperatures are plotted against total monthly precipitation are fairly good in predicting the type of nematode liable to be important in a given region, but they are too simplistic to be relied on for more than approximations. |
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Palavras-Chave: |
Nematodeos. |
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Thesagro: |
Epidemiologia; Haemonchus Contortus; Ovino; Parasitologia. |
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Thesaurus Nal: |
Climate; Climatic factors; Nematoda; Parasitology; Sheep. |
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Categoria do assunto: |
H Saúde e Patologia |
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Marc: |
LEADER 02004naa a2200265 a 4500
001 1520947
005 2023-05-03
008 1975 bl uuuu u00u1 u #d
024 7 $a10.1007/BF01460016$2DOI
100 1 $aLEVINE, N. D.
245 $aMicrometeorological factors involved in development and survival of free-living stages of the sheep nematodes Haemonchus contortus and Trichostrongylus colubriformis. A review.$h[electronic resource]
260 $c1975
520 $aTemperature and soil moisture are the most important factors affecting the development and survival of Haemonchus contortus and Trichostrongylus columbriformis eggs and larvae on pasture. More than half of the eggs develop into infective larvae in the laboratory, but a very low percentage (0.03% for H. contortus) does so on pasture. There is a marked difference between H. contortus and T. colubriformis in survival of infective larvae. H. contortus larvae survived in the winter at Urbana poorly, whereas T. colubriformis did well. The former survived better than the latter in the spring and worse in the summer, while both survived equally well in the fall. Technics for larval recovery from pasture are not very efficient. Meteorologic conditions at ground level where the larvae exist are quite different from those in a standard weather shelter 1.6 m above the ground. Bioclimatographs in which mean monthly maximum temperatures are plotted against total monthly precipitation are fairly good in predicting the type of nematode liable to be important in a given region, but they are too simplistic to be relied on for more than approximations.
650 $aClimate
650 $aClimatic factors
650 $aNematoda
650 $aParasitology
650 $aSheep
650 $aEpidemiologia
650 $aHaemonchus Contortus
650 $aOvino
650 $aParasitologia
653 $aNematodeos
700 1 $aTODD JUNIOR, K. S.
773 $tInternational Journal of Biometeorology$gv. 19, n. 3, p. 174-183, Nov. 1975.
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| 2. |  | MATOS, M. C. B.; SOUSA SOUTO, L.; ALMEIDA, R. S.; TEODORO, A. V. Contrasting patterns of species richness and composition of solitary wasps and bees (Insecta: Hymenoptera) according to land-use. Biotrópica, Lawrence, KS, v. 45, n. 1, p. 73-79, 2013.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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