Aspectos da biologia de Amblyomma cajennense (Fabricius, 1787) e Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae), em condi??es experimentais
Autor(a) principal: | |
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Data de Publicação: | 1997 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFRRJ |
Texto Completo: | https://tede.ufrrj.br/jspui/handle/tede/852 |
Resumo: | The first experiment was set up to measure the drop-off rhythm of larvae and nymphs of Amblyomma cajennense feeding on the rabbits as experimental hosts. Infestations were carried out with unfed larvae and nymphs aging 15 and 45 days post eclosion and host larval moulting, respectively. Three rabbits were infested with approximately 825 larvae (50 mg of eggs) and 100 nymphs for each age totaling 12 rabbits. Each host were examined at 8, 12, 16 and 24 hours and the dropped larvae and nymphs collected. Regardless of age and instar higher drop-off rhythm were observed from 8 to 16 hours: 73,6 and 72,8% larvae with 15 and 45 days post eclosion and 69,6 and 57,5 nymphs with 15 and 45 days post larval moulting, respectively. The second experiment was set up to evaluate the effect of age on the attachment of larvae and nymphs of Amblyomma cajennense using the rabbit as experimental host. Infestations were carried out with unfed larvae aging from 0-4 to 150 days post-eclosion and unfed nymphs aging from 0-2 to 165 days post-larval moulting. A total of 11 and 12 infestations respectively for larvae and nymphs with 15 days interval were monitored. Three rabbits were infested with 825 larvae and 100 nymphs per rabbit at each interval. Larvae and nymphs with 0-2 day post-eclosion and post larval moulting were able to attach and feed at rates of 45 and 77%. Higher attachment rates for larva (> 70%) were observed from days 15 to 60 post eclosion. Then, start to decrease until 25% at 150 days post-eclosion. Higher attachment rates for nymphs were observed from days 15 to 90 post moulting (> 80%). Then, start to decrease until 36% at 165 days. The periods of attachment and ecdisis, and the percentage of ecdisis were similar for both stages regardless the age prior attachment. When the period of pre-ecdisis is analyzed one might note a shortening as the nymphs because older whereas it was similar for larvae in ali evaluated ages. This third experiment was conduct as an attempt to correlate the weight pre-ecdisis period and timing of drop-off of nymphs with the forecast of the sexes in adults of Rhipicephalus sanguineus. The mean weight of nymphs that moulted to males (n = 96) was 1,97 ? 0,97 and 2,52 ? 0,90 to females (n = 103) (P > 0,05) between the weight of nymphs can not be used to forecast the sexes due to overlapping of to weight ranges. The pre-ecdisis periods were 15,13 ? 0,94 and 14,60 ? 0,77 days for nymphs that moulted to males (n = 96) and females (n = 103) (P > 0,05) respectively. Nymphs (n = 50) that dropped-off on both third and fourth day (mode) post-infestation moulted to 29 females and 21 males whereas those (n = 50) that dropped-off on the fifth day post-infestation moulted to 30 females and 20 males (x2 > 0,05). Although there are numerical differences in ali evaluated parameters none can be used to forecast the sexes in R. sanguineus due to an extensive overlapping. |
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Faccini, Jo?o Luiz Hor?cio242.424.547-91http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783396T6&dataRevisao=null113.047.153-53http://lattes.cnpq.br/9259834164958306Ribeiro, Armando de Lemos2016-04-28T20:16:32Z2010-08-091997-12-16RIBEIRO, Armando de Lemos. Aspectos da biologia de Amblyomma cajennense (Fabricius, 1787) e Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae), em condi??es experimentais. 1997. 67 f. Tese (Doutorado em Ci?ncias Veterin?rias) - Instituto de Veterin?ria, Universidade Federal Rural do Rio de Janeiro, Serop?dica - RJ, 1997.https://tede.ufrrj.br/jspui/handle/tede/852The first experiment was set up to measure the drop-off rhythm of larvae and nymphs of Amblyomma cajennense feeding on the rabbits as experimental hosts. Infestations were carried out with unfed larvae and nymphs aging 15 and 45 days post eclosion and host larval moulting, respectively. Three rabbits were infested with approximately 825 larvae (50 mg of eggs) and 100 nymphs for each age totaling 12 rabbits. Each host were examined at 8, 12, 16 and 24 hours and the dropped larvae and nymphs collected. Regardless of age and instar higher drop-off rhythm were observed from 8 to 16 hours: 73,6 and 72,8% larvae with 15 and 45 days post eclosion and 69,6 and 57,5 nymphs with 15 and 45 days post larval moulting, respectively. The second experiment was set up to evaluate the effect of age on the attachment of larvae and nymphs of Amblyomma cajennense using the rabbit as experimental host. Infestations were carried out with unfed larvae aging from 0-4 to 150 days post-eclosion and unfed nymphs aging from 0-2 to 165 days post-larval moulting. A total of 11 and 12 infestations respectively for larvae and nymphs with 15 days interval were monitored. Three rabbits were infested with 825 larvae and 100 nymphs per rabbit at each interval. Larvae and nymphs with 0-2 day post-eclosion and post larval moulting were able to attach and feed at rates of 45 and 77%. Higher attachment rates for larva (> 70%) were observed from days 15 to 60 post eclosion. Then, start to decrease until 25% at 150 days post-eclosion. Higher attachment rates for nymphs were observed from days 15 to 90 post moulting (> 80%). Then, start to decrease until 36% at 165 days. The periods of attachment and ecdisis, and the percentage of ecdisis were similar for both stages regardless the age prior attachment. When the period of pre-ecdisis is analyzed one might note a shortening as the nymphs because older whereas it was similar for larvae in ali evaluated ages. This third experiment was conduct as an attempt to correlate the weight pre-ecdisis period and timing of drop-off of nymphs with the forecast of the sexes in adults of Rhipicephalus sanguineus. The mean weight of nymphs that moulted to males (n = 96) was 1,97 ? 0,97 and 2,52 ? 0,90 to females (n = 103) (P > 0,05) between the weight of nymphs can not be used to forecast the sexes due to overlapping of to weight ranges. The pre-ecdisis periods were 15,13 ? 0,94 and 14,60 ? 0,77 days for nymphs that moulted to males (n = 96) and females (n = 103) (P > 0,05) respectively. Nymphs (n = 50) that dropped-off on both third and fourth day (mode) post-infestation moulted to 29 females and 21 males whereas those (n = 50) that dropped-off on the fifth day post-infestation moulted to 30 females and 20 males (x2 > 0,05). Although there are numerical differences in ali evaluated parameters none can be used to forecast the sexes in R. sanguineus due to an extensive overlapping.O primeiro experimento foi montado para avaliar o ritmo de queda de larvas e ninfas de Amblyomma cajennense alimentadas em coelhos. Infesta??es foram feitas com larvas e ninfas em jejum com idades de 15 e 45 dias ap?s eclos?o e ecdise larval respectivamente. Tr?s coelhos foram infestados com aproximadamente 825 larvas (50 mg de ovos) e 100 ninfas para cada idade totalizando 12 coelhos. Cada hospedeiro foi examinado nos hor?rios de 8, 12, 16 e 24 horas e as larvas e ninfas desprendidas foram coletadas. Independente da idade e do instar, o maior n?mero se desprendeu entre 8 e 16 horas: 73,6% e 72,8% para larvas com 15 e 45 dias ap?s eclos?o e 69,6% e 57,5% para ninfa. Com 15 e 45 dias ap?s ecdise larval, respectivamente. O segundo experimento teve como objetivo avaliar o efeito da idade sobre a fixa??o de larvas e ninfas de Amblyomma cajennense, usando o coelho como hospedeiro. Infesta??es foram feitas com larvas com per?odos de jejum de zero a 4 at? 150 dias ap?s eclos?o e ninfas em jejum variando de zero a 2 at? 165 dias ap?s ecdise larval. Um total de 11 e 12 infesta??es para larvas e ninfas respectivamente, com intervalos de 15 dias foram acompanhados. Tr?s coelhos foram infestados com 825 larvas e 100 ninfas por coelhos e para cada tratamento. Larvas e ninfas com zero a 4 dias ap?s eclos?o e zero a 2 dias ap?s ecdise larval se fixaram e se alimentaram, com taxas de recupera??o de 45 e 77% respectivamente. Taxas de recupera??o alta para larvas (> 70%) foi observado para 15 at? 60 dias ap?s eclos?o. Entretanto a partir da? come?ou a decrescer para 25% at? 150 dias p?s-eclos?o. As taxas de recupera??o foram altas para ninfas com 15 at? 90 dias p?s-ecdise (> 80%). Ent?o, come?ou a decrescer para 36% at? 165 dias. Os per?odos de pr?-ecdise, de ecdise e as percentagens de ecdise foram est?veis para todas as idades estudadas. Quando o per?odo de pr?-ecdise ? analisado nota-se um encurtamento conforme as ninfas se tornam mais velhas; ao contr?rio este per?odo foi similar para larvas de todas as idades. Esse terceiro experimento foi conduzido para se observar a correla??o entre o peso, o per?odo de pr?-ecdise e o per?odo de queda de ninfas ingurgitadas com a previs?o do sexo dos adultos de Rhipicephalus sanguineus. A m?dia do peso de ninfas que originaram machos (n = 96) foi de 1,97 ? 0,97 e 2,52 ? 0,90 para f?meas (n = 103) (P > 0,05). O peso das ninfas n?o pode ser usado para a previs?o dos sexos devido ? superposi??o dos pesos. O per?odo de pr?-ecdise foi de 15,13 ? 0,94 e 14,60 ? 0,77 dias par ninfas que originaram machos (n = 96) e f?meas (n = 103) (P > 0,05), respectivamente. Ninfas (n = 50), dos per?odos de queda, inicial (3? dia) e modal (4? dia), desprenderam-se 29 f?meas e 21 machos, em ambos per?odos. No per?odo final (5? dia) (n = 50) desprenderam-se 30 f?meas e 20 machos (x2 > 0,05). Embora exista diferen?as num?ricas em todos os par?metros avaliados, tais par?metros n?o podem ser utilizados para a previs?o dos sexos em R. sanguineus devido a amplitude da superposi??o.Made available in DSpace on 2016-04-28T20:16:32Z (GMT). No. of bitstreams: 1 1997 - Armando de Lemos Ribeiro.pdf: 1637429 bytes, checksum: 67368e92ac3e601a127f511f61aef35b (MD5) Previous issue date: 1997-12-16CAPES - Coordena??o de Aperfei?oamento de Pessoal de N?vel Superiorapplication/pdfhttps://tede.ufrrj.br/retrieve/60066/1997%20-%20Armando%20de%20Lemos%20Ribeiro.pdf.jpgporUniversidade Federal Rural do Rio de JaneiroPrograma de P?s-Gradua??o em Ci?ncias Veterin?riasUFRRJBrasilInstituto de Veterin?riaAmblyomma cajennenseRhipicephalus sanguineusAcariIxodidaeciclo biol?gicoexperimentalLife cycleMedicina Veterin?riaAspectos da biologia de Amblyomma cajennense (Fabricius, 1787) e Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae), em condi??es experimentaisAspects of the biology of Amblyomma cajennense (Fabricius, 1787) and Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae), in experimentals conditionsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFRRJinstname:Universidade Federal Rural do Rio de Janeiro (UFRRJ)instacron:UFRRJTHUMBNAIL1997 - Armando de Lemos Ribeiro.pdf.jpg1997 - Armando de Lemos Ribeiro.pdf.jpgimage/jpeg3748http://localhost:8080/tede/bitstream/tede/852/3/1997+-+Armando+de+Lemos+Ribeiro.pdf.jpgd2b882ba77d6aa07a6b4a47852f0c05fMD53TEXT1997 - Armando de Lemos Ribeiro.pdf.txt1997 - Armando de Lemos Ribeiro.pdf.txttext/plain95855http://localhost:8080/tede/bitstream/tede/852/2/1997+-+Armando+de+Lemos+Ribeiro.pdf.txt77fb4ba9bbc3c8513843b26716a482c4MD52ORIGINAL1997 - Armando de Lemos Ribeiro.pdf1997 - Armando de Lemos Ribeiro.pdfapplication/pdf1637521http://localhost:8080/tede/bitstream/tede/852/1/1997+-+Armando+de+Lemos+Ribeiro.pdf5684398d50ce41b7fd359bc118fa9441MD51tede/8522022-06-03 16:53:36.171oai:localhost:tede/852Biblioteca Digital de Teses e Dissertaçõeshttps://tede.ufrrj.br/PUBhttps://tede.ufrrj.br/oai/requestbibliot@ufrrj.br||bibliot@ufrrj.bropendoar:2022-06-03T19:53:36Biblioteca Digital de Teses e Dissertações da UFRRJ - Universidade Federal Rural do Rio de Janeiro (UFRRJ)false |
dc.title.por.fl_str_mv |
Aspectos da biologia de Amblyomma cajennense (Fabricius, 1787) e Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae), em condi??es experimentais |
dc.title.alternative.eng.fl_str_mv |
Aspects of the biology of Amblyomma cajennense (Fabricius, 1787) and Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae), in experimentals conditions |
title |
Aspectos da biologia de Amblyomma cajennense (Fabricius, 1787) e Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae), em condi??es experimentais |
spellingShingle |
Aspectos da biologia de Amblyomma cajennense (Fabricius, 1787) e Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae), em condi??es experimentais Ribeiro, Armando de Lemos Amblyomma cajennense Rhipicephalus sanguineus Acari Ixodidae ciclo biol?gico experimental Life cycle Medicina Veterin?ria |
title_short |
Aspectos da biologia de Amblyomma cajennense (Fabricius, 1787) e Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae), em condi??es experimentais |
title_full |
Aspectos da biologia de Amblyomma cajennense (Fabricius, 1787) e Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae), em condi??es experimentais |
title_fullStr |
Aspectos da biologia de Amblyomma cajennense (Fabricius, 1787) e Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae), em condi??es experimentais |
title_full_unstemmed |
Aspectos da biologia de Amblyomma cajennense (Fabricius, 1787) e Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae), em condi??es experimentais |
title_sort |
Aspectos da biologia de Amblyomma cajennense (Fabricius, 1787) e Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae), em condi??es experimentais |
author |
Ribeiro, Armando de Lemos |
author_facet |
Ribeiro, Armando de Lemos |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Faccini, Jo?o Luiz Hor?cio |
dc.contributor.advisor1ID.fl_str_mv |
242.424.547-91 |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4783396T6&dataRevisao=null |
dc.contributor.authorID.fl_str_mv |
113.047.153-53 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/9259834164958306 |
dc.contributor.author.fl_str_mv |
Ribeiro, Armando de Lemos |
contributor_str_mv |
Faccini, Jo?o Luiz Hor?cio |
dc.subject.por.fl_str_mv |
Amblyomma cajennense Rhipicephalus sanguineus Acari Ixodidae ciclo biol?gico experimental |
topic |
Amblyomma cajennense Rhipicephalus sanguineus Acari Ixodidae ciclo biol?gico experimental Life cycle Medicina Veterin?ria |
dc.subject.eng.fl_str_mv |
Life cycle |
dc.subject.cnpq.fl_str_mv |
Medicina Veterin?ria |
description |
The first experiment was set up to measure the drop-off rhythm of larvae and nymphs of Amblyomma cajennense feeding on the rabbits as experimental hosts. Infestations were carried out with unfed larvae and nymphs aging 15 and 45 days post eclosion and host larval moulting, respectively. Three rabbits were infested with approximately 825 larvae (50 mg of eggs) and 100 nymphs for each age totaling 12 rabbits. Each host were examined at 8, 12, 16 and 24 hours and the dropped larvae and nymphs collected. Regardless of age and instar higher drop-off rhythm were observed from 8 to 16 hours: 73,6 and 72,8% larvae with 15 and 45 days post eclosion and 69,6 and 57,5 nymphs with 15 and 45 days post larval moulting, respectively. The second experiment was set up to evaluate the effect of age on the attachment of larvae and nymphs of Amblyomma cajennense using the rabbit as experimental host. Infestations were carried out with unfed larvae aging from 0-4 to 150 days post-eclosion and unfed nymphs aging from 0-2 to 165 days post-larval moulting. A total of 11 and 12 infestations respectively for larvae and nymphs with 15 days interval were monitored. Three rabbits were infested with 825 larvae and 100 nymphs per rabbit at each interval. Larvae and nymphs with 0-2 day post-eclosion and post larval moulting were able to attach and feed at rates of 45 and 77%. Higher attachment rates for larva (> 70%) were observed from days 15 to 60 post eclosion. Then, start to decrease until 25% at 150 days post-eclosion. Higher attachment rates for nymphs were observed from days 15 to 90 post moulting (> 80%). Then, start to decrease until 36% at 165 days. The periods of attachment and ecdisis, and the percentage of ecdisis were similar for both stages regardless the age prior attachment. When the period of pre-ecdisis is analyzed one might note a shortening as the nymphs because older whereas it was similar for larvae in ali evaluated ages. This third experiment was conduct as an attempt to correlate the weight pre-ecdisis period and timing of drop-off of nymphs with the forecast of the sexes in adults of Rhipicephalus sanguineus. The mean weight of nymphs that moulted to males (n = 96) was 1,97 ? 0,97 and 2,52 ? 0,90 to females (n = 103) (P > 0,05) between the weight of nymphs can not be used to forecast the sexes due to overlapping of to weight ranges. The pre-ecdisis periods were 15,13 ? 0,94 and 14,60 ? 0,77 days for nymphs that moulted to males (n = 96) and females (n = 103) (P > 0,05) respectively. Nymphs (n = 50) that dropped-off on both third and fourth day (mode) post-infestation moulted to 29 females and 21 males whereas those (n = 50) that dropped-off on the fifth day post-infestation moulted to 30 females and 20 males (x2 > 0,05). Although there are numerical differences in ali evaluated parameters none can be used to forecast the sexes in R. sanguineus due to an extensive overlapping. |
publishDate |
1997 |
dc.date.issued.fl_str_mv |
1997-12-16 |
dc.date.available.fl_str_mv |
2010-08-09 |
dc.date.accessioned.fl_str_mv |
2016-04-28T20:16:32Z |
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info:eu-repo/semantics/publishedVersion |
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publishedVersion |
dc.identifier.citation.fl_str_mv |
RIBEIRO, Armando de Lemos. Aspectos da biologia de Amblyomma cajennense (Fabricius, 1787) e Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae), em condi??es experimentais. 1997. 67 f. Tese (Doutorado em Ci?ncias Veterin?rias) - Instituto de Veterin?ria, Universidade Federal Rural do Rio de Janeiro, Serop?dica - RJ, 1997. |
dc.identifier.uri.fl_str_mv |
https://tede.ufrrj.br/jspui/handle/tede/852 |
identifier_str_mv |
RIBEIRO, Armando de Lemos. Aspectos da biologia de Amblyomma cajennense (Fabricius, 1787) e Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae), em condi??es experimentais. 1997. 67 f. Tese (Doutorado em Ci?ncias Veterin?rias) - Instituto de Veterin?ria, Universidade Federal Rural do Rio de Janeiro, Serop?dica - RJ, 1997. |
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https://tede.ufrrj.br/jspui/handle/tede/852 |
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por |
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Universidade Federal Rural do Rio de Janeiro |
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UFRRJ |
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Brasil |
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Instituto de Veterin?ria |
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Universidade Federal Rural do Rio de Janeiro |
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