Ticks and Disease |
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Page 393
... sheep disease and louping ill , both of which affect sheep and goats . In East Africa a tick - borne gastroenteritis of sheep and goats ( Nairobi sheep disease ) is caused by a filtrable virus trans- mitted most commonly by the brown ...
... sheep disease and louping ill , both of which affect sheep and goats . In East Africa a tick - borne gastroenteritis of sheep and goats ( Nairobi sheep disease ) is caused by a filtrable virus trans- mitted most commonly by the brown ...
Page 394
... sheep disease can survive in nymphal tissues for up to 358 days ( i.e. 348 days plus the moulting period ) . Infesta- tion of sheep with clean adults of R. appendiculatus was under- taken as a first step in determining the longevity of ...
... sheep disease can survive in nymphal tissues for up to 358 days ( i.e. 348 days plus the moulting period ) . Infesta- tion of sheep with clean adults of R. appendiculatus was under- taken as a first step in determining the longevity of ...
Page 408
... sheep in Britain , DDT at bath con- centrations of 0.5 % kept six sheep free of female ticks during the spring tick season , when they were dipped five times . In later experiments , Heath dipped sheep whenever he found female ticks ...
... sheep in Britain , DDT at bath con- centrations of 0.5 % kept six sheep free of female ticks during the spring tick season , when they were dipped five times . In later experiments , Heath dipped sheep whenever he found female ticks ...
Contents
INTRODUCTION | 1 |
CUTICLETHE KEY TO TICK ADAPTABILITY | 10 |
EXTERNAL FEATURES OF SOME ECONOMICALLY IMPORTANT SPECIES | 27 |
Copyright | |
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Common terms and phrases
activity Africa Amblyomma andersoni animals appear areas argasid Argasidae attached Babesia basis capituli bite body Boophilus broad capitulum cattle cells Cervical grooves cheliceral colour coxa coxal cuticle cytoplasm Dermacentor disease dogs dorsal view eggs endocuticle engorged epicuticle evertsi external spur feeding fluid fully fed genus granules Haemaphysalis hairs hard ticks hexagonus Hoogstraal host humidity Hyalomma hypostome infection Ixodes ricinus Ixodidae large number larvae larvae and nymphs lateral layer Lees legs length louping ill lumen male membrane microplus Milne moult muscles Nuttall nymphal nymphs nymphs and adults occur palp palpi parasites Parasitology pathogens period persicus pharynx Pomerantzev posterior margin punctations rabbits relapsing fever reported Rhipicephalus rickettsiae rounded salivary glands sanguineus scutum sheep soft ticks spermatophore spiracle Spiracular plate spirochaetes spotted fever spur on coxa surface tarsus tarsus IV temperature Theileria tick species tissues transmission transmitted transverse unfed females variabilis vector ventral virus whilst