Ticks and Disease |
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Page 356
... the tick is not an habitual parasite of man the disease does not assume epidemic proportions , but it is difficult to explain why the levels of virulence of the disease vary consistently in different 356 TICKS AND DISEASE.
... the tick is not an habitual parasite of man the disease does not assume epidemic proportions , but it is difficult to explain why the levels of virulence of the disease vary consistently in different 356 TICKS AND DISEASE.
Page 385
... disease . By the use of Gradocol membranes and of high - speed centrifuges of the Svedborg type , where the sedimentation rate of many virus particles has been studied , it has become possible to calculate their approximate sizes . From ...
... disease . By the use of Gradocol membranes and of high - speed centrifuges of the Svedborg type , where the sedimentation rate of many virus particles has been studied , it has become possible to calculate their approximate sizes . From ...
Page 393
... 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 tick , R ...
... 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 tick , R ...
Contents
INTRODUCTION | 1 |
CUTICLEThe Key to TICK ADAPTABILITY | 10 |
EXTERNAL FEATURES OF SOME ECONOMICALLY IMPORTANT | 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 inner Ixodes ricinus Ixodidae large number larvae larvae and nymphs lateral layer Lees legs length louping ill lumen male membrane microplus moult muscles Nuttall nymphal nymphs nymphs and adults occur palp palpi parasites pathogens period persicus pharynx posterior margin punctations rabbits relapsing fever reported Rhipicephalus rickettsiae rounded salivary glands sanguineus scutum sheep skin 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