The free-living phase and seasonal variation of Boophilus microplus in Botucatu, São Paulo State, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2003 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2111 |
Resumo: | A 3-year study of the non-parasitic and parasitic phases of the cattle tick Boophilus microplus was carried out in Botucatu, São Paulo state, Brazil. Engorged females were exposed in pastures of Brachiaria decumbens at intervals of 30 days, and left in the environment protected from sun radiation and rainfall. The preoviposition and oviposition periods were influenced by climatic changes, and there was a negative correlation with the air temperature, humidity, and rainfall. Oviposition was observed throughout the year, however between the period of May to August the eggs did not hatch. The longest and shortest larval survival periods were recorded on the progeny of ticks exposed, respectively, in August and March. The seasonal variation of B. microplus was studied by the counts, at intervals of 2 weeks, of engorged females on the left side of a group of nine cross-bred cattle of both sexes and approximately two years old. Peak in tick burdens were observed in winter, while the lower levels were recorded in September and October, although this variation showed, by simple linear regressive analysis, a strong similirarity just between the first and the third cycles. There was a tendency of influence of the temperature and rainfall on the burdens on the animals. |
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Semina. Ciências Agrárias (Online) |
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The free-living phase and seasonal variation of Boophilus microplus in Botucatu, São Paulo State, BrazilFase de vida livre e flutuação sazonal do Boophilus microplus em Botucatu, São Paulo, BrasilBovineBoophilus microplusEpidemiologySeasonal flutuation.BovinoBoophilus microplusEpidemiologiaVariação sazonal.A 3-year study of the non-parasitic and parasitic phases of the cattle tick Boophilus microplus was carried out in Botucatu, São Paulo state, Brazil. Engorged females were exposed in pastures of Brachiaria decumbens at intervals of 30 days, and left in the environment protected from sun radiation and rainfall. The preoviposition and oviposition periods were influenced by climatic changes, and there was a negative correlation with the air temperature, humidity, and rainfall. Oviposition was observed throughout the year, however between the period of May to August the eggs did not hatch. The longest and shortest larval survival periods were recorded on the progeny of ticks exposed, respectively, in August and March. The seasonal variation of B. microplus was studied by the counts, at intervals of 2 weeks, of engorged females on the left side of a group of nine cross-bred cattle of both sexes and approximately two years old. Peak in tick burdens were observed in winter, while the lower levels were recorded in September and October, although this variation showed, by simple linear regressive analysis, a strong similirarity just between the first and the third cycles. There was a tendency of influence of the temperature and rainfall on the burdens on the animals.Em um intervalo de três anos, estudou-se as fases de vida livre e parasitária do Boophilus microplus, no município de Botucatu, São Paulo, Brasil. Mensalmente, fêmeas ingurgitadas foram distribuídas em pastagem de Brachiaria decumbens e mantidas no meio ambiente. Determinou-se correlação negativa dos períodos de pré-postura e postura com a temperatura do ar, umidade relativa e precipitação pluviométrica. A postura foi registrada durante todo o estudo, existindo, porém, alta redução na eclosão de ovos nos meses de maio a agosto. Os períodos mínimos e máximos médios de sobrevivência larval foram observados, respectivamente, nas progênies de teleóginas expostas em agosto e março. A dinâmica populacional do B. microplus foi estudada pela contagem, em intervalos de 14 dias, de fêmeas ingurgitadas maiores que 4,5 mm sobre o lado esquerdo de um grupo de nove bovinos mestiços de raças de origem européia e indiana, de ambos os sexos e com aproximadamente dois anos de idade. Os piques de cargas parasitárias ocorreram no inverno, ao passo que os menores índices foram verificados em setembro e outubro. Com base na análise de regressão linear simples, ocorreu uma forte semelhança entre o primeiro e o terceiro anos, havendo uma tendência de influência da temperatura e da precipitação pluviomátrica sobre a carga parasitária nos animais.UEL2003-05-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/211110.5433/1679-0359.2003v24n1p11Semina: Ciências Agrárias; Vol. 24 No. 1 (2003); 11-20Semina: Ciências Agrárias; v. 24 n. 1 (2003); 11-201679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2111/1812Santarém, Vamilton AlvaresSartor, Izidoro Franciscoinfo:eu-repo/semantics/openAccess2009-05-22T20:17:15Zoai:ojs.pkp.sfu.ca:article/2111Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2009-05-22T20:17:15Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
The free-living phase and seasonal variation of Boophilus microplus in Botucatu, São Paulo State, Brazil Fase de vida livre e flutuação sazonal do Boophilus microplus em Botucatu, São Paulo, Brasil |
title |
The free-living phase and seasonal variation of Boophilus microplus in Botucatu, São Paulo State, Brazil |
spellingShingle |
The free-living phase and seasonal variation of Boophilus microplus in Botucatu, São Paulo State, Brazil Santarém, Vamilton Alvares Bovine Boophilus microplus Epidemiology Seasonal flutuation. Bovino Boophilus microplus Epidemiologia Variação sazonal. |
title_short |
The free-living phase and seasonal variation of Boophilus microplus in Botucatu, São Paulo State, Brazil |
title_full |
The free-living phase and seasonal variation of Boophilus microplus in Botucatu, São Paulo State, Brazil |
title_fullStr |
The free-living phase and seasonal variation of Boophilus microplus in Botucatu, São Paulo State, Brazil |
title_full_unstemmed |
The free-living phase and seasonal variation of Boophilus microplus in Botucatu, São Paulo State, Brazil |
title_sort |
The free-living phase and seasonal variation of Boophilus microplus in Botucatu, São Paulo State, Brazil |
author |
Santarém, Vamilton Alvares |
author_facet |
Santarém, Vamilton Alvares Sartor, Izidoro Francisco |
author_role |
author |
author2 |
Sartor, Izidoro Francisco |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Santarém, Vamilton Alvares Sartor, Izidoro Francisco |
dc.subject.por.fl_str_mv |
Bovine Boophilus microplus Epidemiology Seasonal flutuation. Bovino Boophilus microplus Epidemiologia Variação sazonal. |
topic |
Bovine Boophilus microplus Epidemiology Seasonal flutuation. Bovino Boophilus microplus Epidemiologia Variação sazonal. |
description |
A 3-year study of the non-parasitic and parasitic phases of the cattle tick Boophilus microplus was carried out in Botucatu, São Paulo state, Brazil. Engorged females were exposed in pastures of Brachiaria decumbens at intervals of 30 days, and left in the environment protected from sun radiation and rainfall. The preoviposition and oviposition periods were influenced by climatic changes, and there was a negative correlation with the air temperature, humidity, and rainfall. Oviposition was observed throughout the year, however between the period of May to August the eggs did not hatch. The longest and shortest larval survival periods were recorded on the progeny of ticks exposed, respectively, in August and March. The seasonal variation of B. microplus was studied by the counts, at intervals of 2 weeks, of engorged females on the left side of a group of nine cross-bred cattle of both sexes and approximately two years old. Peak in tick burdens were observed in winter, while the lower levels were recorded in September and October, although this variation showed, by simple linear regressive analysis, a strong similirarity just between the first and the third cycles. There was a tendency of influence of the temperature and rainfall on the burdens on the animals. |
publishDate |
2003 |
dc.date.none.fl_str_mv |
2003-05-10 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2111 10.5433/1679-0359.2003v24n1p11 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2111 |
identifier_str_mv |
10.5433/1679-0359.2003v24n1p11 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2111/1812 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 24 No. 1 (2003); 11-20 Semina: Ciências Agrárias; v. 24 n. 1 (2003); 11-20 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306057069101056 |