Strategic applications of long-acting acaricides against Rhipicephalus (Boophilus) microplus in northwestern Argentina, with an analysis of tick distribution among cattle
Strategic applications of long-acting acaricides for the control of Rhipicephalus (Boophilus) microplus in northwestern Argentina were evaluated for one year. In addition, tick distribution among cattle was analyzed to evaluate if partial selective treatment or culling the small proportion of most heavily infested animals were feasible options to control R. (B.) microplus. Two different treatments schemes based on two applications of fluazuron and one application of 3.15% ivermectin were performed. Treatments were made in late winter and spring so as to act on the small 1st spring generation of R. (B.) microplus, in order to preclude the rise of the larger autumn generation. The overall treatment effect was positively significant in both schemes. The number of ticks observed in the control group was significantly higher than in the treated groups on all post-treatment counts. Group 2 exhibited more than 80% of efficacy almost throughout the study period, whereas Group 1 exhibited an efficacy percentage higher than 80% in September, October, December, February, April and May, but not in November (73.4%), January (58.3%), March (45.2%) or June (53.4%). Absolute control was observed in Group 2 in the counts of September and October, and in Group 1 in the count of February. The control strategies evaluated in this work provide an acceptable control level with only three applications of acaricides; at the same time, they prevent the occurrence of the autumn peak of tick burdens, which is characteristic of R. (B.) microplus in northwestern Argentina. Tick distribution was markedly aggregated in all counts. Although ticks were not distributed evenly among calves, the individual composition of the most heavily infested group was not consistent throughout the study period. In addition, the level of aggregation varied with tick abundance. These results suggest that applying acaricides to a portion of the herd or culling the most infested individuals at a given moment of the year may not be proper methods to achieve a significant control of R. (B.) microplus in northwestern Argentina.
Main Authors: | , , , |
---|---|
Format: | info:ar-repo/semantics/artículo biblioteca |
Language: | eng |
Published: |
2015-03
|
Subjects: | Rhipicephalus, Ganado Bovino, Acaricidas, Plagas de Animales, Control de Plagas, Cattle, Acaricides, Pests of Animals, Pest Control, Rhipicephalus (Boophilus) Microplus, Garrapatas, Región Noroeste, Argentina, |
Online Access: | https://www.sciencedirect.com/science/article/pii/S0304401715000333?via%3Dihub http://ri.conicet.gov.ar/handle/11336/16307 http://hdl.handle.net/20.500.12123/2116 https://doi.org/10.1016/j.vetpar.2015.01.015 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
oai:localhost:20.500.12123-2116 |
---|---|
record_format |
koha |
spelling |
oai:localhost:20.500.12123-21162018-06-29T15:20:31Z Strategic applications of long-acting acaricides against Rhipicephalus (Boophilus) microplus in northwestern Argentina, with an analysis of tick distribution among cattle Nava, Santiago Mangold, Atilio Jose Canevari, Jose Tobias Guglielmone, Alberto Rhipicephalus Ganado Bovino Acaricidas Plagas de Animales Control de Plagas Cattle Acaricides Pests of Animals Pest Control Rhipicephalus (Boophilus) Microplus Garrapatas Región Noroeste, Argentina Strategic applications of long-acting acaricides for the control of Rhipicephalus (Boophilus) microplus in northwestern Argentina were evaluated for one year. In addition, tick distribution among cattle was analyzed to evaluate if partial selective treatment or culling the small proportion of most heavily infested animals were feasible options to control R. (B.) microplus. Two different treatments schemes based on two applications of fluazuron and one application of 3.15% ivermectin were performed. Treatments were made in late winter and spring so as to act on the small 1st spring generation of R. (B.) microplus, in order to preclude the rise of the larger autumn generation. The overall treatment effect was positively significant in both schemes. The number of ticks observed in the control group was significantly higher than in the treated groups on all post-treatment counts. Group 2 exhibited more than 80% of efficacy almost throughout the study period, whereas Group 1 exhibited an efficacy percentage higher than 80% in September, October, December, February, April and May, but not in November (73.4%), January (58.3%), March (45.2%) or June (53.4%). Absolute control was observed in Group 2 in the counts of September and October, and in Group 1 in the count of February. The control strategies evaluated in this work provide an acceptable control level with only three applications of acaricides; at the same time, they prevent the occurrence of the autumn peak of tick burdens, which is characteristic of R. (B.) microplus in northwestern Argentina. Tick distribution was markedly aggregated in all counts. Although ticks were not distributed evenly among calves, the individual composition of the most heavily infested group was not consistent throughout the study period. In addition, the level of aggregation varied with tick abundance. These results suggest that applying acaricides to a portion of the herd or culling the most infested individuals at a given moment of the year may not be proper methods to achieve a significant control of R. (B.) microplus in northwestern Argentina. EEA Rafaela Fil: Nava, Santiago. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Mangold, Atilio Jose. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Canevari, Jose Tobias. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Investigación Animal del Chaco Semiárido; Argentina Fil: Guglielmone, Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2018-03-26T12:06:51Z 2018-03-26T12:06:51Z 2015-03 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.sciencedirect.com/science/article/pii/S0304401715000333?via%3Dihub http://ri.conicet.gov.ar/handle/11336/16307 http://hdl.handle.net/20.500.12123/2116 0304-4017 https://doi.org/10.1016/j.vetpar.2015.01.015 eng info:eu-repo/semantics/restrictedAccess application/pdf Veterinary parasitology 208 (3–4) : 225-230. (March 2015) |
institution |
INTA AR |
collection |
DSpace |
country |
Argentina |
countrycode |
AR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-inta-ar |
tag |
biblioteca |
region |
America del Sur |
libraryname |
Biblioteca Central del INTA Argentina |
language |
eng |
topic |
Rhipicephalus Ganado Bovino Acaricidas Plagas de Animales Control de Plagas Cattle Acaricides Pests of Animals Pest Control Rhipicephalus (Boophilus) Microplus Garrapatas Región Noroeste, Argentina Rhipicephalus Ganado Bovino Acaricidas Plagas de Animales Control de Plagas Cattle Acaricides Pests of Animals Pest Control Rhipicephalus (Boophilus) Microplus Garrapatas Región Noroeste, Argentina |
spellingShingle |
Rhipicephalus Ganado Bovino Acaricidas Plagas de Animales Control de Plagas Cattle Acaricides Pests of Animals Pest Control Rhipicephalus (Boophilus) Microplus Garrapatas Región Noroeste, Argentina Rhipicephalus Ganado Bovino Acaricidas Plagas de Animales Control de Plagas Cattle Acaricides Pests of Animals Pest Control Rhipicephalus (Boophilus) Microplus Garrapatas Región Noroeste, Argentina Nava, Santiago Mangold, Atilio Jose Canevari, Jose Tobias Guglielmone, Alberto Strategic applications of long-acting acaricides against Rhipicephalus (Boophilus) microplus in northwestern Argentina, with an analysis of tick distribution among cattle |
description |
Strategic applications of long-acting acaricides for the control of Rhipicephalus (Boophilus) microplus in northwestern Argentina were evaluated for one year. In addition, tick distribution among cattle was analyzed to evaluate if partial selective treatment or culling the small proportion of most heavily infested animals were feasible options to control R. (B.) microplus. Two different treatments schemes based on two applications of fluazuron and one application of 3.15% ivermectin were performed. Treatments were made in late winter and spring so as to act on the small 1st spring generation of R. (B.) microplus, in order to preclude the rise of the larger autumn generation. The overall treatment effect was positively significant in both schemes. The number of ticks observed in the control group was significantly higher than in the treated groups on all post-treatment counts. Group 2 exhibited more than 80% of efficacy almost throughout the study period, whereas Group 1 exhibited an efficacy percentage higher than 80% in September, October, December, February, April and May, but not in November (73.4%), January (58.3%), March (45.2%) or June (53.4%). Absolute control was observed in Group 2 in the counts of September and October, and in Group 1 in the count of February. The control strategies evaluated in this work provide an acceptable control level with only three applications of acaricides; at the same time, they prevent the occurrence of the autumn peak of tick burdens, which is characteristic of R. (B.) microplus in northwestern Argentina. Tick distribution was markedly aggregated in all counts. Although ticks were not distributed evenly among calves, the individual composition of the most heavily infested group was not consistent throughout the study period. In addition, the level of aggregation varied with tick abundance. These results suggest that applying acaricides to a portion of the herd or culling the most infested individuals at a given moment of the year may not be proper methods to achieve a significant control of R. (B.) microplus in northwestern Argentina. |
format |
info:ar-repo/semantics/artículo |
topic_facet |
Rhipicephalus Ganado Bovino Acaricidas Plagas de Animales Control de Plagas Cattle Acaricides Pests of Animals Pest Control Rhipicephalus (Boophilus) Microplus Garrapatas Región Noroeste, Argentina |
author |
Nava, Santiago Mangold, Atilio Jose Canevari, Jose Tobias Guglielmone, Alberto |
author_facet |
Nava, Santiago Mangold, Atilio Jose Canevari, Jose Tobias Guglielmone, Alberto |
author_sort |
Nava, Santiago |
title |
Strategic applications of long-acting acaricides against Rhipicephalus (Boophilus) microplus in northwestern Argentina, with an analysis of tick distribution among cattle |
title_short |
Strategic applications of long-acting acaricides against Rhipicephalus (Boophilus) microplus in northwestern Argentina, with an analysis of tick distribution among cattle |
title_full |
Strategic applications of long-acting acaricides against Rhipicephalus (Boophilus) microplus in northwestern Argentina, with an analysis of tick distribution among cattle |
title_fullStr |
Strategic applications of long-acting acaricides against Rhipicephalus (Boophilus) microplus in northwestern Argentina, with an analysis of tick distribution among cattle |
title_full_unstemmed |
Strategic applications of long-acting acaricides against Rhipicephalus (Boophilus) microplus in northwestern Argentina, with an analysis of tick distribution among cattle |
title_sort |
strategic applications of long-acting acaricides against rhipicephalus (boophilus) microplus in northwestern argentina, with an analysis of tick distribution among cattle |
publishDate |
2015-03 |
url |
https://www.sciencedirect.com/science/article/pii/S0304401715000333?via%3Dihub http://ri.conicet.gov.ar/handle/11336/16307 http://hdl.handle.net/20.500.12123/2116 https://doi.org/10.1016/j.vetpar.2015.01.015 |
work_keys_str_mv |
AT navasantiago strategicapplicationsoflongactingacaricidesagainstrhipicephalusboophilusmicroplusinnorthwesternargentinawithananalysisoftickdistributionamongcattle AT mangoldatiliojose strategicapplicationsoflongactingacaricidesagainstrhipicephalusboophilusmicroplusinnorthwesternargentinawithananalysisoftickdistributionamongcattle AT canevarijosetobias strategicapplicationsoflongactingacaricidesagainstrhipicephalusboophilusmicroplusinnorthwesternargentinawithananalysisoftickdistributionamongcattle AT guglielmonealberto strategicapplicationsoflongactingacaricidesagainstrhipicephalusboophilusmicroplusinnorthwesternargentinawithananalysisoftickdistributionamongcattle |
_version_ |
1756007086262583297 |