| [seasonal variations in the parasitic activity of the cattle tick boophilus microplus (acari, ixodidae), in new caledonia]. | | 1980 | 7291655 |
| use of a mathematical model to study the control measures of the cattle tick boophilus microplus population in new caledonia. | boophilus microplus is a common cattle tick of great economic importance in various tropical and subtropical countries like new caledonia. the proposed model describes the population dynamics of female boophilus microplus in the absence of resistant ticks. it is a system of six difference equations which can be mathematically analyzed. the analysis of the system shows the great importance of the eigenvalue denoted by lambda1. the population of ticks increases if lambda1 < 1 and decreases if lamb ... | 1998 | 9763318 |
| role of rusa deer cervus timorensis russa in the cycle of the cattle tick boophilus microplus in new caledonia. | two field experiments were conducted to evaluate the efficiency of rusa deer in the development of the cattle tick boaphilus microplus in comparison with that of steers in the same pastures and under the same conditions of infestation. no difference was noted between a mixed steer/deer herd and a pure steer or pure deer herd in the infestation pattern of each host, suggesting that attachment to the alternative host is mechanical and not affected by the simultaneous presence of the primary host o ... | 2001 | 11508531 |
| effect of the association of cattle and rusa deer (cervus timorensis russa) on populations of cattle ticks (boophilus microplus). | the wild population of rusa deer (cervus timorensis russa) in new caledonia (south pacific) is nearly as large as the cattle population. the cattle tick is widespread and occurs all year round. opinions are divided on the role of deer in the biological cycle of the tick: i) do they maintain a sustainable tick population that is secondarily available for cattle? ii) do they decrease the infestation of the environment by collecting larvae on the pasture, but preventing their development to the eng ... | 2002 | 12381606 |
| factors related to cattle infestation level and resistance to acaricides in boophilus microplus tick populations in new caledonia. | boophilus microplus, even in the absence of babesiosis, is a major disease of the cattle in new caledonia where the particular farming system associates continental european breeds and a tropical climate tempered by the pacific ocean. in order to have a better understanding of the factors involved in cattle tick infestation, to decrease the possible wastage and use of chemicals and to increase the lifetime of the acaricides, the veterinary authorities investigated the conditions of the chemical ... | 2003 | 12581586 |
| factors affecting the detachment rhythm of engorged boophilus microplus female ticks (acari: ixodidae) from charolais steers in new caledonia. | as in most parts of the world where the cattle tick boophilus microplus is established, resistance of ticks to acaricides occurs in new caledonia. in order to implement laboratory resistance tests on larvae, engorged females collected in suspected farms are necessary. investigations on the detachment schedule of the engorged females were conducted to explain certain field situations such as the lack or scarcity of engorged females on highly infested cattle driven from the pasture to the pen in t ... | 2003 | 12623211 |
| diagnosis of amitraz resistance in boophilus microplus in new caledonia with the modified larval packet test. | the tick boophilus microplus represents a serious pathological constraint to livestock production in new caledonia. cattle ticks are controlled by chemical application of two acaricides that are currently used in new caledonia; deltamethrin is used at 46% of the cattle production facilities and amitraz at the remaining 54% premises where resistance to deltamethrin has been identified. in 2003, a modified larval packet test (lpt) was used to conduct a survey for amitraz resistance. ticks were col ... | 2005 | 15908122 |
| accumulation of acaricide resistance mechanisms in rhipicephalus (boophilus) microplus (acari: ixodidae) populations from new caledonia island. | rhipicephalus (boophilus) microplus has been pesticide-controlled for several decades in the pacific island of new caledonia. since 1996, pesticide-control has been based on either deltamethrin (butox) or amitraz (taktic) in herds harbouring deltamethrin-resistant ticks. in this island, the first r. microplus deltamethrin- and amitraz-resistances were detected in 1992 and 2003, respectively. using lpt bioassays, we have undertaken to update data regarding the geographical distribution and the ph ... | 2007 | 17560723 |
| in vitro and in vivo evaluation of deltamethrin and amitraz mixtures for the control of rhipicephalus (boophilus) microplus (acari: ixodidae) in new caledonia. | acaricide resistance is a major problem that hinders the control of the tropical cattle tick, rhipicephalus (boophilus) microplus (canestrini), in many parts of the world where cattle production continues to suffer severe economic losses to tick infestation. deltamethrin and amitraz have been used alone to control r. microplus in new caledonia for the past decade, and tick populations have developed resistance to both acaricides. a study was conducted to evaluate the effectiveness of deltamethri ... | 2008 | 18565679 |
| swift sympatric adaptation of a species of cattle tick to a new deer host in new caledonia. | the occurrence and frequency of sympatric speciation in natural systems continue to be hotly debated issues in evolutionary biology. this might reflect the timescale over which evolution occurs resulting in there being few compelling observations of the phenomenon (lake fishes, phytophagous insects and island trees). despite predictions, few examples of sympatric speciation have been recorded in animal parasites, at least widely accepted as such. here we show that, in new caledonia, the monophas ... | 2010 | 20601171 |
| a campaign to eradicate bovine babesiosis from new caledonia. | in december 2007, babesia bovis was introduced to new caledonia through the importation of cattle that had been vaccinated with a live tick fever (babesiosis and anaplasmosis) vaccine. although the tick rhipicephalus (boophilus) microplus is common in new caledonia, the territory had previously been free of tick-borne diseases of cattle. this paper describes the initial extent of the outbreak, the measures and rationale for disease control, and the progress to date of the eradication campaign. i ... | 2011 | 21771538 |
| bartonellae in animals and vectors in new caledonia. | bartonellae are gram-negative facultative intracellular alpha-proteobacteria from the family bartonellaceae. the natural history of bartonellae consists of a reservoir/host, which is a vertebrate with chronic intravascular infection with sustained bacteremia, and a vector (usually an arthropod) that transfers the bacteria from the reservoir to a susceptible yet uninfected host. in order to reveal the sources and reservoirs of bartonella infection in animals and vectors in new caledonia, we colle ... | 2011 | 22018646 |
| diagnostic methods used to monitor an outbreak of babesiosis (babesia bovis) in a herd of feral cattle in new caledonia. | in december 2007, babesia bovis was introduced to new caledonia through the importation of cattle vaccinated with a live tick fever (babesiosis and anaplasmosis) vaccine. medical measures, acaricide and antiprotozoal treatments, and quarantine restrictions were implemented with success on all the farms involved, but the disease spread to one of the neighbouring properties where feral cattle were present. to circumscribe and eliminate this outbreak, the authorities decided to slaughter all animal ... | 2013 | 23718796 |
| comparison of tick resistance of crossbred senepol × limousin to purebred limousin cattle. | the comparison of resistance to natural tick infestation by rhipicephalus microplus (canestrini, 1887) of crossbred senepol × limousin and purebred limousin cattle was investigated. the senepol breed, originated from st croix island in the caribbean is considered as a bos taurus breed adapted to tropical conditions. despite its b. taurus genetic background, it is believed to have a good tick resistance, but this resistance has never been assessed previously. tick counts under natural infestation ... | 2014 | 24366717 |
| evaluation of three adjuvants with respect to both adverse effects and the efficacy of antibody production to the bm86 protein. | cattle tick infestations remain an important burden for farmers in tropical area like in new caledonia. with the development of acaricide resistance, tick vaccines should be an attractive alternative to control ticks but their efficacy needs to be improved. in this study three adjuvants were studied in an experimental tick vaccine with a bm86 protein to assess their performance in terms of antibody productions and adverse reactions following vaccinations. the water-in-oil adjuvant isa 61 vg led ... | 2017 | 28752480 |
| reinstatement of rhipicephalus (boophilus) australis (acari: ixodidae) with redescription of the adult and larval stages. | rhipicephalus australis fuller, the australian cattle tick, is reinstated and the adults and larvae redescribed from material collected in australia. this long ignored boophilid was previously known as r. microplus canestrini for specimens reported in australia and new caledonia. the adults of r. australis are easily recognized by a combination of characters, such as the ventro-medial spurs in the palpal segments of the male, and the abundant, plumose, pale white setae on the dorsum of the femal ... | 2012 | 22897039 |
| survey of cattle tick, riphicephalus (boophilus) microplus, resistance to amitraz and deltamethrin in new caledonia. | the evolution of tick resistance to acaricides in new caledonia was followed in two ways: through two large scale surveys in 1998 and 2014 and through the routine analysis of samples of ticks with suspected resistance. the results of the two approaches were qualitatively similar though analysis of ticks with suspected resistance gave higher frequencies of resistance, as expected of a biased sample. resistance tests using a larval packet test have been conducted since 1993 for deltamethrin and 20 ... | 2016 | 26827863 |
| acaricidal activity of five essential oils of ocimum species on rhipicephalus (boophilus) microplus larvae. | the aim of this study was to evaluate the acaricidal activity on the cattle tick rhipicephalus (boophilus) microplus of essential oils from three ocimum species. acaricidal activity of five essential oils extracted from ocimum gratissimum l. (three samples), o. urticaefolium roth, and o. canum sims was evaluated on 14- to 21-day-old rhipicephalus microplus tick larvae using larval packet test bioassay. these essential oils were analyzed by gas chromatography (gc) and gas chromatography-mass spec ... | 2015 | 25300420 |
| acaricidal activity of essential oils from five endemic conifers of new caledonia on the cattle tick rhipicephalus (boophilus) microplus. | the aim of the present study was to demonstrate acaricidal activity on the cattle tick rhipicephalus (boophilus) microplus of essential oils from endemic conifers of new caledonia in the context of the development of natural alternatives. acaricidal activity of essential oils extracted from resin and heartwood of five endemic conifers of new caledonia (araucaria columnaris, agathis moorei, agathis ovata, callitris sulcata, and neocallitropsis pancheri) was evaluated on 14- to 21-day-old rhipicep ... | 2013 | 23371495 |
| understanding the genetic, demographical and/or ecological processes at play in invasions: lessons from the southern cattle tick rhipicephalus microplus (acari: ixodidae). | the southern cattle tick, rhipicephalus microplus, is the ixodid species causing the largest economic losses in tropical agrosystems because of its recurrent invasive success, explosive demography on bovine herds, vector competence for diverse pathogens and frequent development of acaricide resistance. its ecology and the physiological bases of the acaricide resistances it developed, as well as alternative tick control measures, have been intensively studied for decades. by contrast, the tick po ... | 2013 | 22945880 |
| [preliminary note on the appearance of resistance to ethion in several strains of boophilus microplus in new caledonia]. | | 1980 | 7232805 |