Studies on the survival of the non-parasitic stages of the cattle tick Boophilus microplus in three climatically dissimilar districts of North Queensland

1966 ◽  
Vol 17 (3) ◽  
pp. 387 ◽  
Author(s):  
KLS Harley
Keyword(s):  
Larval Survival ◽  
Tick Control ◽  
Boophilus Microplus ◽  
Cattle Tick ◽  
Seasonal Temperature ◽  
Wet Season ◽  
Temperature Changes ◽  
Soil Temperatures ◽  
The Times ◽  
Field Plots

Survival of the non-parasitic stages of the cattle tick, Boophilus microplus (Canestrini), has been investigated over a period of 5 years in 25, 40, and 80 in. rainfall districts of north Queensland. Engorged ticks were exposed regularly in field plots and in Stevenson screens, and the times of egg hatchmg (prehatch period) and periods of survival of the larvae were observed. The prehatch period in the three districts followed the same pattern and was related to seasonal temperature changes, varying from less than 4 weeks in midsummer to over 13 weeks in midwinter. A relationship between minimum prehatch period and mean air temperature for ticks exposed in screens was established, but the data from ticks exposed in the field were too variable to establish a relationship between prehatch periods and soil temperatures. Hatching was recorded in every month of the year from all districts, but during the driest months in the 25 in. rainfall areas many ticks in exposed situations failed to reproduce. Larval survival and total longevity also followed a similar pattern in all districts. The longest survival periods were recorded for the progeny of ticks exposed late in the wet season from March to April, and the shortest survival periods for the progeny of ticks exposed during the dry season from August to September. Mean maximum total longevity for ticks exposed in field plots in the 25 in. rainfall district varied from 10 to 22 weeks, in the 40 in. rainfall district from 14 to 22 weeks, and in the 80 in. rainfall district from 15 to 26 weeks. The data on prehatch and survival periods are a suitable basis for formulating recommendations for tick control by pasture spelling and planned dipping.

A model of the survival of larvae of the cattle tick, Boophilus microplus, on pasture

1983 ◽  
Vol 34 (1) ◽  
pp. 63 ◽  
Author(s):  
KBW Utech ◽  
RW Sutherst ◽  
MJ Dallwitz ◽  
RH Wharton ◽  
GF Maywald ◽  
...  
Keyword(s):  
Larval Survival ◽  
Tick Control ◽  
Boophilus Microplus ◽  
Maximum Temperature ◽  
Cattle Tick ◽  
Computer Simulation Model ◽  
South Eastern ◽  
Maximum Temperatures ◽  
Parameter Values ◽  
Made In

Larvae of Boophilus microplus were released onto pasture in south-eastern and central Queensland and their survival was measured using destructive sampling. In summer 50% of the larvae survived for 2 weeks and 10% survived for 4 weeks. Comparable values for winter were 3-4 and 6-11 weeks respectively. A chart was prepared to relate larval survival to maximum temperatures in summer, when pasture spelling for tick control is most likely to be successful. A computer simulation model was developed to describe the survival of the larvae in relation to meteorological conditions. The parameter values were fitted using the data from south-eastern Queensland and tested against observations made in central Queensland. Maximum temperature and saturation deficit at 1500 hours proved to be the best predictors of survival, but it was not possible to distinguish between their effects.

scholarly journals Chemical Composition and Acaricidal Activity of Nemuaron vieillardii Essential Oil against the Cattle Tick Rhipicephalus (Boophilus) microplus

2016 ◽  
Vol 11 (12) ◽  
pp. 1934578X1601101
Author(s):  
Nicolas Lebouvier ◽  
Thomas Hue ◽  
Joseph Brophy ◽  
Edouard Hnawia ◽  
Mohammed Nour
Keyword(s):  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Tick Control ◽  
Acaricidal Activity ◽  
Boophilus Microplus ◽  
Gas Chromatography Mass Spectrometry ◽  
Cattle Tick ◽  
Caryophyllene Oxide ◽  
Human Carcinogen

Essential oil from leaves of Nemuaron vieillardii (Baill.) Baill., a shrub used in the kanak pharmacopeia, was analyzed by gas chromatography and combined gas chromatography-mass spectrometry. The main compounds identified were safrole (49.7%), linalool (8.0%), δ-cadinene (5.1%), caryophyllene oxide (4%) and α-copaene (2.4%). This chemical composition is consistent with leaf oils of the Atherospermataceae family and demonstrates the proximity of the two genera Nemuaron and Atherosperma as regards to their essential oil compositions. The modified Larval Packet Test (LPT) was used to assess acaricidal effect of N. vieillardii essential oil on larvae of the cattle tick Rhipicephalus (Boophilus) microplus and LC50 was then calculated to 14.67%. High content of safrole in this oil which is suspected of being a human carcinogen, poses the problem of the use of this oil in a perspective of development of alternative tick control strategy and in the traditional medicinal consumption of Nemuaron vieillardii.

A ten-year review of commercial vaccine performance for control of tick infestations on cattle

2007 ◽  
Vol 8 (1) ◽  
pp. 23-28 ◽  
Author(s):  
José de la Fuente ◽  
Consuelo Almazán ◽  
Mario Canales ◽  
José Manuel Pérez de la Lastra ◽  
Katherine M. Kocan ◽  
...  
Keyword(s):  
Latin American ◽  
Control Method ◽  
Cost Effective ◽  
Tick Control ◽  
Boophilus Microplus ◽  
Cattle Tick ◽  
Antigen Discovery ◽  
Tick Vaccine ◽  
Latin American Countries ◽  
Selection Of

AbstractTicks are important ectoparasites of domestic and wild animals, and tick infestations economically impact cattle production worldwide. Control of cattle tick infestations has been primarily by application of acaricides which has resulted in selection of resistant ticks and environmental pollution. Herein we discuss data from tick vaccine application in Australia, Cuba, Mexico and other Latin American countries. Commercial tick vaccines for cattle based on the Boophilus microplus Bm86 gut antigen have proven to be a feasible tick control method that offers a cost-effective, environmentally friendly alternative to the use of acaricides. Commercial tick vaccines reduced tick infestations on cattle and the intensity of acaricide usage, as well as increasing animal production and reducing transmission of some tick-borne pathogens. Although commercialization of tick vaccines has been difficult owing to previous constraints of antigen discovery, the expense of testing vaccines in cattle, and company restructuring, the success of these vaccines over the past decade has clearly demonstrated their potential as an improved method of tick control for cattle. Development of improved vaccines in the future will be greatly enhanced by new and efficient molecular technologies for antigen discovery and the urgent need for a tick control method to reduce or replace the use of acaricides, especially in regions where extensive tick resistance has occurred.

The spelling of pasture in cattle tick control

1957 ◽  
Vol 8 (4) ◽  
pp. 414 ◽  
Author(s):  
PR Wilkinson
Keyword(s):  
Field Trial ◽  
Tick Infestation ◽  
Tick Control ◽  
Boophilus Microplus ◽  
Cattle Tick ◽  
Frequent Use ◽  
Cattle Tick Control

When two comparable herds of cattle were kept continuously in adjoining paddocks, frequent acaricidal treatment was necessary to control ticks (Boophilus microplus (Canestrini) ). Thereafter, one of the two herds was grazed alternately in its own and an adjacent paddock, the intervals between each transfer being sufficient to ensure that most of the ticks in the unoccupied paddock had died. Tick infestations on this herd were greatly reduced, and less frequent use of acaricides was necessary. The herd remaining in the continuously stocked pasture continued to need acaricidal treatment for recurring tick infestation. In a field trial with 350–400 cattle moved a t intervals to each of three formerly heavily infested paddocks, tick infestations remained very light, although the herd was dipped only In January, September, and the following January. A control herd on continuously stocked pasture, treated at the owner's discretion, required eight dippings in this period. This procedure of "pasture spelling" seems likely to be widely applicable in central Queensland.

Cattle-tick control in Northern Nigeria: a field study of BHC, Sevin, toxaphene and ronnel used as sprays

1964 ◽  
Vol 54 (4) ◽  
pp. 633-641 ◽  
Author(s):  
R. J. Thorpe ◽  
P. Walker
Keyword(s):  
Field Study ◽  
Tick Control ◽  
Amblyomma Variegatum ◽  
Cattle Tick ◽  
Tick Population ◽  
Wet Season ◽  
Boophilus Annulatus ◽  
Degree Of Control ◽  
Savannah Zone ◽  
Cattle Tick Control

A field study was made of the effects of γ BHC, Sevin, toxaphene and ronnel (fenchlorphos) used as sprays on the numbers of ticks infesting cattle at Shika stockfarm in the Northern Guinea Savannah zone of Nigeria.The tick population included Boophilus annulatus (Say), B. decoloratus (Koch), Amblyomma variegatum (F.), Hyalomma truncatum Koch and Rhipiccphalus simus simus Koch, and its distribution on the host is described.Significance tests of treatment difference were carried out for initial kill and reinfestation rate. In both dry- and wet-season trials toxaphene proved to be the most effective ixodicide. A satisfactory degree of control was given by γ BHC but not by Sevin or ronnel.It is concluded that spraying at 21- and 7-day intervals during the dry and wet seasons, respectively, with either toxaphene or γ BHC will maintain a stable, satisfactory level of tick parasitism and premunity to tick-borne diseases in the herd.

Survival of cattle ticks in central Queensland pastures

1959 ◽  
Vol 10 (1) ◽  
pp. 129 ◽  
Author(s):  
PR Wilkinson ◽  
JT Wilson
Keyword(s):  
Laboratory Data ◽  
Free Water ◽  
Boophilus Microplus ◽  
Cattle Tick ◽  
Hatching Date ◽  
Female Progeny ◽  
Large Numbers ◽  
Cattle Ticks ◽  
The Difference ◽  
The Times

Observations on the gradual distension and shrinkage of cattle tick larvae (Boophilus microplus (Canestrini)) confirmed that they can take up water from, or lose water to, the atmosphere under suitable conditions. Further evidence was obtained that partially desiccated larvae can drink when in contact with free water. Consideration of the relative humidities recorded over sward adjoining a creek, during a drought, suggested that larvae would be able to absorb moisture during the 9-hr period before dawn. Dew m-as also available to the larvae in drought time, and on most mornings when observations were made. In the laboratory, larvae in cultures supplied with water droplets lived longer than those in similar cultures not supplied with water. Larval clusters on artificial supports out of doors lived longer if protected by fabric shades. At intervals over 2 years, female ticks were placed in grassland near Rockhampton and at Yeppoon, Qld., under simulated natural conditions. The times of hatching and periods of survival of the larvae were observed. In contrast with the marked decrease in tick fertility which occurs in the winter in south Queensland, ticks put out throughout the winter at Rockhampton laid large numbers of fertile eggs. Very few larval progeny of ticks put out in summer survived 3 months after the date of placement of the parent female. Progeny of ticks put out in the winter persisted up to 54 months after the date of placement of the parent. A graph of the 'pre-hatch' (pre-oviposition plus developmental) periods against screen temperatures followed the trend expected from laboratory data, but the difference between actual and computed hatching dates was large in some cases. Actual hatching date was usually later than computed hatching date, both for ticks in the soil and for ticks in humidified containers in a meteorological screen. The comparatively short survival periods of larvae in the central Queensland summer indicated the practicability of controlling the cattle tick by temporarily destocking pastures.

Trapping of larvae of the cattle tick Boophilus microplus by Stylosanthes scabra under grazing conditions

1989 ◽  
Vol 40 (6) ◽  
pp. 1301 ◽  
Author(s):  
LJ Wilson ◽  
RW Sutherst ◽  
JD Kerr
Keyword(s):  
Laboratory Tests ◽  
Seasonal Pattern ◽  
Tick Control ◽  
Boophilus Microplus ◽  
Cattle Tick ◽  
Research Station ◽  
Morphological Attributes ◽  
Control Programs ◽  
Per Se ◽  
Stylosanthes Scabra

Several varieties of the leguminous genus Stylosanthes have the capacity to trap larvae of the tick Boophilus microplus. This capacity was assessed for S. scabra plants collected from grazed fields at two locations, Brian Pastures Research Station and 'The Springs' in central Queensland. Morphological attributes which may affect the capacity of plants to trap tick larvae were recorded. In laboratory tests, plants collected from Brian Pastures trapped 27% of larvae in summer and 12% in winter, whilst plants from 'The Springs' trapped an average of 12%, with no seasonal pattern discernible. The percentage of branches which were sticky was the major determinant of a plant's capacity to trap ticks. Variation in stickiness per se was less important. Frost and burning temporarily reduced tick-trapping capacity, but after four months, burnt plants trapped a higher percentage of larvae than unburnt plants due to the production of sticky regrowth. The implication of the results for the use of S. scabra in tick control programs is discussed.

scholarly journals Comparative Hemolymph Proteomic and Enzymatic Analyses of Two Strains of Rhipicephalus (Boophilus) microplus Ticks Resistant and Susceptible to Ixodicides

2018 ◽  
Vol 2018 ◽  
pp. 1-16 ◽  
Author(s):  
H. Aguilar-Díaz ◽  
M. Esquivel-Velázquez ◽  
R. E. Quiroz-Castañeda ◽  
E. Miranda-Miranda ◽  
R. J. P. Conde-Baeye ◽  
...  
Keyword(s):  
Tick Control ◽  
Boophilus Microplus ◽  
Economic Losses ◽  
Cattle Tick ◽  
2D Electrophoresis ◽  
Major Threat ◽  
Hemolymph Protein ◽  
Boophilus Microplus Ticks ◽  
Insight Into ◽  
New Strategies

The cattle tick Rhipicephalus (Boophilus) microplus is one of the most harmful ectoparasites affecting bovines worldwide. It represents a major threat to livestock industry due to the economic losses caused and diseases associated with these ticks. The most important tick control strategy has been the use of ixodicides, resulting in chemically resistant tick populations. It is necessary to understand the mechanisms that result in resistance so as to create new strategies increasing the lifespan of ixodicides or finding alternative targets to produce new acaricides. In this paper, in order to obtain an insight into the mechanisms that govern ixodicides resistance, we will compare the hemolymph proteome of two tick R. microplus strains, one susceptible (MJ) and one resistant (SA) to ixodicides, using HPLC and 2D electrophoresis. Significant differences were found in protein content between strains using HPLC. 2D electrophoresis revealed that 68 hemolymph protein spots were common between strains; however, 26 spots were unique to the susceptible strain MJ and 5 to the resistant strain SA. The most distinctive protein spots on the preparative gels were selected for further analyses. Nine protein spots were identified by mass fingerprinting, 
revealing proteins that may have a role in the ixodicides resistance or susceptibility. In this paper, we present the tick hemolymph proteome revealing a set of proteins which suggest a possible role in tick detoxification.

scholarly journals Survey of cattle tick infestation on farm herds in Ogun state, Nigeria

2021 ◽  
Vol 44 (3) ◽  
pp. 23-30
Author(s):  
F. A. Akande ◽  
I. K. Oyewusi ◽  
M. G. Ajisafe ◽  
O. A. Idowu ◽  
I. O Anifowose
Keyword(s):  
Tick Control ◽  
Boophilus Microplus ◽  
Cattle Tick ◽  
Disease Vector ◽  
Ogun State ◽  
Boophilus Decoloratus ◽  
Tick Distribution ◽  
The Mean ◽  
The Tropics ◽  
On Farm

Cattle in the tropics are exposed to varying levels of challenges r from endo and ectoparasites as well as environmental stressors. Ticks have been recognized as the most notorious threat to cattle because of their hide damaging and disease vector. As a result of these, continuous study of tick distribution on cattle is necessary. Two hundred and five cattle of determined breed, sex and age, were randomly sampled from eight different locations across four local Government areas of Ogun state in 2015. Harvested ticks were identified to species level. Variation in tick distribution across age, sex and locations were subjected to statistical analysis. Among the 205 cattle sampled, 125 (61%) had ticks while 80 (39%) had no ticks, 84 (67%) female have ticks, 27 (33%) do not have, 41 (44%) males have ticks and 53 (56%) do not have. The mean age of the cattle sampled was 3.0±0.1 years, with a mean Packed Cell Volume (PCV) of 30.8±0.4%. Amblyommavariegatum was the most prevalent tick (76%), followed by Rhipicephalus (Boophilus) decoloratus (20%), Rhipicephalus (Boophilus) microplus (2%) while Rhipicephalus (Boophilus) annulatus. and Hyalommam arginatum were 1% respectively. Age and sex of cattle were discovered to be statistically significant in this study. Considering the economic importance of ticks in regards to morbidity and mortality; appropriate tick control strategy and technique need to be applied and constant tick surveillance should be encouraged in the study area

The management of acaricide resistance in the cattle tick, Boophilus microplus (Canestrini) (Acari: Ixodidae), in Australia

1979 ◽  
Vol 69 (3) ◽  
pp. 519-537 ◽  
Author(s):  
R. W. Sutherst ◽  
H. N. Comins
Keyword(s):  
Geographical Area ◽  
Optimal Strategies ◽  
Tick Control ◽  
Boophilus Microplus ◽  
Cattle Tick ◽  
Economic Factors ◽  
Acaricide Resistance ◽  
Development Of Resistance ◽  
High Concentrations

AbstractAn analysis, using mathematical models, is presented of the ecological, genetic and economic factors that determine the optimal strategies for the long-term use of chemical control of Boophilus microplus (Can.) on cattle. As an illustration, the control of the tick in south-eastern Queensland is considered, but the approach is readily applicable in any other geographical area. It is suggested that optimal strategies take into account the need to delay the development of resistance to acaricides. The suggested strategies involve the use of tick-resistant Zebu-type cattle as a basis for tick control. High concentrations of acaricides are recommended to reduce seleotion of resistant ticks. Careful timing and moderation in the use of acaricides is also recommended to minimise the number of occasions on which resistant ticks are subjected to selection at times when they can successfully reproduce. As the spread of resistance is thought to occur primarily on moving cattle and before resistance is evident, stringent quarantine measures may slow down the spread.

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