Results 181 to 190 of about 4,722 (223)
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Boophilus microplus: Characterization of Enzymes Introduced Into the Host
Australian Journal of Biological Sciences, 1976A number of enzymes, presumably secreted by larvae of B. micro plus under natural feeding conditions, have been investigated in the skin of previously unexposed calves 4 h after infestation at the attachment site. Carboxylic ester hydrolase activity was demonstrated in the dermis, immediately adjacent to the mouthparts, or in the attachment cone ...
A V, Schleger, D T, Lincoln
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Parthenogenesis in the Cattle Tick, Boophilus microplus
Nature, 1963ALTHOUGH bisexual reproduction is usual among ticks, there have been reports of parthenogenesis in various species including Amblyomma agamum1, Rhipicephalus bursa2, A. dissimile3, Hyalomma anatolicum4, Ornithodorus moubata5, and Haemaphysalis bispinosa6; but there appears to be no previous record of parthenogenesis in Boophilus microplus.
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Boophilus microplus: Strain differences of the cholinesterase system
Experimental Parasitology, 1978Abstract Cholinesterase (EC 31.1.7 and EC 31.1.8) activity was determined for homogenates of two Argentinian strains of larval ticks, Boophilus microplus . One strain (strain A) was sensitive to organophosphate acaricides. The other strain (strain G) was insensitive to coumaphos and to a lesser degree to other acaricides.
C I, Reich +3 more
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Distribution of catecholamines in the cattle tick Boophilus microplus
Comparative Biochemistry and Physiology Part C: Comparative Pharmacology, 1977Abstract 1. The distribution of monoaminergic neurones in the synganglion and peripheral nervous system of the cattle tick Boophilus microplus was studied by the Falck-Hillarp histofluorescence method. 2. Fluorescent cortical cell bodies were associated with the pedal and opisthosomal ganglia and with the stomodeal pons and varicosities in the ...
K C, Binnington, B F, Stone
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Responses of cattle to allergens from Boophilus microplus
International Journal for Parasitology, 1978Abstract Extracts of larvae of the cattle tick, Boophilus microplus , contain two allergens giving immediate hypersensitivity reactions in the skin of cattle which have been exposed to the tick. The partial purification of one of these is described. This, together with the other allergen whose purification has been described previously, was used to ...
P, Willadsen +3 more
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Boophilus microplus: Antihistaminic and tranquillizing drugs and cattle resistance
Experimental Parasitology, 1969Abstract A significant increase occurred in the yield of engorged Boophilus microplus (Acarina, Ixodidae) from eight out of twelve continuously infested bovine hosts treated with the antihistaminic promethazine hydrochloride (Phenergan). Using other drugs an increase occurred with only one host out of six.
R J, Tatchell, G F, Bennett
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The innervation of the salivary gland of the tick, Boophilus microplus
Cell and Tissue Research, 1977Salivary of the ixodid tick Boophilus microplus Canestrini are at least partially innervated by a branch of the pedipalpal nerve. Axons containing both large granular and smaller agranular vesicles were observed within the acini associated with all types of secretory cells.
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Test for Assortative Mating Between Boophilus microplus and Boophilus annulatus (Acari: Ixodidae)
Journal of Medical Entomology, 1992The closely related cattle ticks, Boophilus microplus (Canestrini) and B. annulatus (Say), were tested for possible assortative mating under conditions designed to mimic those in the field. Patterns in the numbers of the four possible types of matings were generally indicative of a preference for conspecific mates in both species.
L R, Hilburn, R B, Davey
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Boophilus microplus tick burdens on grazing cattle in Colombia
Tropical Animal Health and Production, 1984This study was conducted at Carimagua Research Centre in a well-drained savanna area in the eastern plains of Colombia. The objectives were to note the effect of ecological factors on tick burdens, principally the effect of the environment given by four grasses on the seasonal variations of tick populations. Adult female tick counts were carried out on
E, Aycardi +5 more
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Sporogony and experimental transmission of Babesia equi by Boophilus microplus
Parasitology Research, 1998The development of Babesia equi in salivary glands of adult female Boophilus microplus was observed under a light microscope using semithin sections stained with toluidine blue. Engorged nymphs were obtained from splenectomized foals experimentally infected with B. equi.
A M, Guimarães, J D, Lima, M F, Ribeiro
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