Alternative applications of the strategic control against the cattle tick Rhipicephalus (Boophilus) microplus in a subtropical area

Author(s):  
Santiago Nava ◽  
José R. Toffaletti ◽  
Maria V. Rossner ◽  
Nicolás Morel ◽  
Atilio J. Mangold
2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Marina Popara ◽  
Margarita Villar ◽  
Lourdes Mateos-Hernández ◽  
Isabel G. Fernández de Mera ◽  
José de la Fuente

Cattle ticks,Rhipicephalus (Boophilus) microplus, are a serious threat to animal health and production. Some ticks feed on a single host species while others such asR. microplusinfest multiple hosts. White tailed deer (WTD) play a role in the maintenance and expansion of cattle tick populations. However, cattle ticks fed on WTD show lower weight and reproductive performance when compared to ticks fed on cattle, suggesting the existence of host factors that affect tick feeding and reproduction. To elucidate these factors, a proteomics approach was used to characterize tick and host proteins inR. microplusticks fed on cattle and WTD. The results showed thatR. microplusticks fed on cattle have overrepresented tick proteins involved in blood digestion and reproduction when compared to ticks fed on WTD, while host proteins were differentially represented in ticks fed on cattle or WTD. Although a direct connection cannot be made between differentially represented tick and host proteins, these results suggested that differentially represented host proteins together with other host factors could be associated with higherR. microplustick feeding and reproduction observed in ticks fed on cattle.


1964 ◽  
Vol 15 (5) ◽  
pp. 854 ◽  
Author(s):  
HMD Hoyte

Larval B. microplus were placed on 36 domestic dogs, about half of which were adults and half were puppies. Ticks matured on the adults only. The yield of adult female ticks was very low and variable (average for all dogs, 0.01%); more time was needed to mature than on cattle, and size and egg production were reduced. Most of the resulting larvae matured successfully when placed on cattle. No ticks matured on the small number of young foxes and dingoes which were tested. It is suggested that the unconsidered presence of dogs represents some risk to the success of campaigns to eradicate this tick.


2018 ◽  
Vol 84 (0) ◽  
Author(s):  
Eduardo Oliveira ◽  
Manoela da Silva ◽  
Lew Sprenger ◽  
Daniela Pedrassani

ABSTRACT: Rhipicephalus (Boophilus) microplus, known as the cattle tick, is a cause of great economic losses for dairy cattle farming because of its high frequency of occurrence and the difficulty in controlling it. The aim of this study was to evaluate the in vitro activity of Chenopodium ambrosioides extract on R. (B.) microplus. For this purpose, 125 females were selected and classified into five groups according to their weight, in order to ensure that the females used presented homogeneous weight. The treatments comprised 40 and 60% extracts of Chenopodium ambrosioides, distilled water, ethanol (70ºGL) and 12.5% amitraz. The extracts of C. ambrosioides (40 and 60%) showed effectiveness of 99.7 and 100% and higher percentages of dead females than the other treatments: 64 and 96%, respectively (p<0.001). In the groups exposed to distilled water and ethanol (70º GL), 92 and 88% of the females maintained oviposition. In the females exposed to 40 and 60% extracts, oviposition of 36 and 4% occurred, respectively. It was concluded that the extract of Chenopodium ambrosioides, at both concentration evaluated, had high efficiency against engorged females of cattle ticks.


1967 ◽  
Vol 15 (5) ◽  
pp. 941 ◽  
Author(s):  
HE Hinton

The structures of the nymphal and adult spiracles of the tick, Boophilus microplus, have been examined by means of serial sections and a stereoscan electron microscope. Contrary to the views of recent writers, the functional openings of the spiracle have been found to be holes or aeropyles in the peripheral part of the spiracular plate of the adult tick. The ostium of previous writers is shown to be the ecdysial tube, which is present only in the spiracles of adult ixodid ticks. After the nymphal-adult ecdysis, the ecdysial tube is closed. There is thus no ostium in this stage, as has been claimed by previous writers who supposed that the chief or only route for gas exchanges between the atrium of the spiracle and the ambient air was through the so-called ostium. The ecdysial process of the spiracles of ticks is shown to be basically similar to the ecdysial process of the spiracles of certain insects such as scarabaeid larvae and the larvae of some Diptera-Cyclorrhapha.


2012 ◽  
Vol 21 (1) ◽  
pp. 22-27 ◽  
Author(s):  
Maria Alice Zacarias do Amaral ◽  
Márcia Cristina de Azevedo Prata ◽  
Erik Daemon ◽  
John Furlong

With the objective of encouraging the use of rabbits as alternative hosts for the cattle tick, four rabbits were infested on the ears and back. From the second day of infestation the developmental stages were observed. e duration of larval engorgement and changes were estimated between six and eight days in the region of the back and between 've and seven days in the pinna. e nymphal engorgement and changes occurred at approximately 10.80 ± 2.65 days in the dorsal and 11.00 ± 2.52 days in the ear, with the engorgement of adults and copulation occurring at 7.03 ± 2.45 days, on the dorsal region and 8.55 ± 1.82 days in the region of the pinna. e parasitic period ranged from 21 to 29 days (back) and from 23 to 30 days (pinna). e engorged females of the back and ear weighed on average 34.43 ± 18.73 and 36.30 ± 18.10 mg, respectively. e nutritional and reproductive e/ciency indexes were 17.38 ± 14.27 and 26.85 ± 17.13% (back) and 17.42 ± 12.22% and 30.70 ± 19.80% (pinna). Although not appropriate to maintain successive generations of Rhipicephalus (Boophilus) microplus, rabbits can be used for di:erent stages of engorgement of the ixodid, allowing experimental studies.


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