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Ticks: physiological aspects with implications for pathogen transmission Open Access
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Kaufman, W. R.
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Water vapour uptake
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Abstract: Ticks have attracted a great deal of scientific attention primarily because of their role as vectors of numerous pathogens The majority of tick researchers worldwide focus primarily on microbiological and clinical issues relating to these pathogens and on methods (pesticidal and biological) for controlling tick populations Unfortunately it is often forgotten that ticks are also interesting in their own right to the general biologist because of their unusual physiological (and other) adaptations Here I review some of these adaptations relating primarily to osmoregulation (i) I outline their ability to take up water vapour directly from the atmosphere an adaptation that enables them to withstand desiccation for extended periods while unfed and in the case of larvae and nymphs following engorgement (ii) I present the remarkable filtration-resorption mechanism of the argasid tick coxal organ analogous to that of the vertebrate glomerular kidney that enables them to regulate haemolymph fluid volume and composition following the blood meal (in) I then turn attention to the salivary glands of female ixodid ticks which serve the on-host osmoregulatory function in this family of ticks (iv) and I discuss the pharmacological control of salivary fluid secretion (v) Finally I link the latter to the mechanism of pathogen transmission by the salivary glands using the tick-borne Thogoto virus as a specific example.
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- © 2010 Elsevier. This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited.
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Kaufman, W.R. (2010) Ticks: physiological aspects with implications for pathogen transmission. Ticks and Tick-borne Diseases 1, 11–22. DOI: 10.1016/j.ttbdis.2009.12.001.
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