Results 161 to 170 of about 3,535 (201)

Amblyomma variegatum ticks and heartwater on three Caribbean Islands.

Annals of the New York Academy of Sciences, 2008
Amblyomma variegatum tick infestation, tick infection by Ehrlichia ruminantium (ER), and ER genetic diversity were studied in the Caribbean Islands of Guadeloupe, Marie-Galante, and Antigua between 2003 and 2005. Nested PCR for pCS20 was used to detect ER, while ER strains were characterized by sequencing or by restriction fragment length polymorphism (
Vachiery, Nathalie, Jeffery, H, Pegram, R, Aprelon, Rosalie, Pinarello, Valérie, Kandassamy, Yannick, Raliniaina, M, Molia, Sophie, Savage, H, Alexander, R, Frebling, M, Martinez, D, Lefrançois, Thierry   +12 more
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Amblyomma variegatum

2023
132. Amblyomma variegatum (Fabricius, 1798). Afrotropical: 1) Angola, 2) Benin, 3) Botswana, 4) Burkina Faso, 5) Burundi, 6) Cameroon, 7) Cape Verde, 8) Central African Republic, 9) Chad (south), 10) Comoros, 11) Congo, 12) Democratic Republic of the Congo, 13) Djibouti, 14) Equatorial Guinea, 15) Eritrea, 16) Ethiopia, 17) Gabon, 18) Gambia, 19) Ghana,
Guglielmone, Alberto A., Nava, Santiago, Robbins, Richard G.   +2 more
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Amblyomma variegatum

2020
134. Amblyomma variegatum (Fabricius, 1798). An Afrotropical and Neotropical species whose larvae, nymphs and adults are usually found on Artiodactyla: Bovidae, but all parasitic stages have also been found on Mammalia (several orders) and Aves (several orders); adults and nymphs have been recovered from Squamata: Varanidae and Viperidae; nymphs ...
Guglielmone, Alberto A., Petney, Trevor N., Robbins, Richard G.   +2 more
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Abnormal Development of Amblyomma variegatum (Acarina: Ixodidae)

Journal of Medical Entomology, 1988
Of 5,000 engorged Amblyomma variegatum larvae, 16 were observed with abnormal external features, centering on partial twinning of the posterior region of the body, with the presence of two anal pores and two genital grooves. According to the number of legs and spiracular plates, nymphs and adults were grouped into three types.
A A, Latif, T S, Dhadialla, R M, Newson
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Susceptibility of Amblyomma variegatum ticks to acaricides in Ghana

Experimental and Applied Acarology, 2005
Abstract. The susceptibility of unfed and fed stages of larvae, nymphs and adult females of Amblyomma variegatum ticks were tested using Shaw's filter paper dip method against four acaricides; chlorfenvinphos and dioxathion, chlorfenvinphos, gamma benzene hexachloride and amitraz at four different concentrations including the recommended dose rates ...
A J, Natala, A D, Agyei, B, Awumbila
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Kinetics of Male Pheromone Production by Amblyomma variegatum (Acari: Ixodidae)

Journal of Medical Entomology, 1993
Males of Amblyomma variegatum (F.), when attached on their host, produce a pheromonal blend composed of methyl salicylate, ortho-nitrophenol, and nonanoic acid, which acts as an aggregation-attachment pheromone. Using olfactometry assays, assays on hosts, and quantification of the compounds by capillary gas chromatography, the kinetics of pheromone ...
Pavis, Claude, Barre, N.
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Propagation of the tick Amblyomma variegatum in the Caribbean.

Revue scientifique et technique (International Office of Epizootics), 1995
The tropical bont tick, Amblyomma variegatum, is an African tick species which infests livestock and wildlife. It was probably introduced in the central eastern islands of the Caribbean during the 18th or 19th century, with cattle shipped from Senegal. In Africa and the Caribbean, this tick is a vector of heartwater (a rickettsial disease of ruminants)
Barré, Nicolas, Garris, G., Camus, Emmanuel   +2 more
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Acute dermatitis caused by Amblyomma variegatum larvae on chickens

Avian Pathology, 1990
Acute dermatitis caused by Amblyomma variegatum larvae infestation was observed in adult local Nigerian chickens. Skin lesions containing numerous A. variegatum larvae were observed on gross examination. Histopathology showed skin haemorrhages, larvae, necrosis and infiltration of eosinophils.
J O, Okoye, M M, Ikeme
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Attempts to Feed Amblyomma variegatum Ticks on Artificial Membranes

Annals of the New York Academy of Sciences, 1998
Feeding jars were used to feed nymphs of Amblyomma variegatum on blood of goats or cattle. Sterile blood was collected daily or weekly (kept at 4 degrees C or frozen until use), with addition either of heparin alone or of heparin and antibiotics/fungicide or of heparin, adenosine triphosphate and glutathione. Membranes were made of a thin (0.12-0.32 mm)
Barre, N., Aprelon, R., Eugène, Maguy
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Progress towards the eradication of Amblyomma variegatum from the Caribbean

Experimental & Applied Acarology, 2002
Progress in the Caribbean Amblyomma Program (CAP) is reviewed since its inception in 1995 when regional eradication activities for Amblyomma variegatum ticks were initiated using Bayticol pour-on. Technical achievements in the various islands were slow initially, and showed a wide diversity in attaining eradication targets. St.
Rupert G, Pegram, Carlos, Eddy
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