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Topic: Thermal Tolerance in Soft bodied Ticks


Need results written on each objective. Please explain each number and what they exactly mean in reference to my actual thesis.
Thermal tolerance was investigated in the argasid tick, Ornithodorostartakovskyi. Despite the multitude of studies that investigate the order Ixodida, ticks from the family Argasidae are understudied. Argasids comprise the family of soft ticks and the family of hard ticks (Warrell, 2013). They are important to study because these ticks serve as vectors for several diseases. The geographic range of O.tartakovskyi is widely distributed throughout the northeastern hemisphere where they experience sweltering hot conditions in the summer months and punishingly cold conditions in the winter months(Donaldson, et al., 2016; Dworkin, 2008). In this study, we assessed thermal tolerance, standard cold exposure, rapid cold hardening, and heat tolerance by tracking mortality after exposure over nearly five months in order to assess longevity and survivorship of larval soft ticks in extreme temperatures. For the purposes of this study, extreme cold is defined as less than 0°C, and extreme heat as greater than 40°C (Robinson, 2001). Temperatures tested for the cold tolerance experiments were: -2°, -6°, -10°, -18°, -22°, -26°, -30°, and -34°C. Temperatures tested for the heat tolerance experiment were 28°, 32°, 36°, 40°, and 44°C. This study provides critical information on the thermal tolerance of soft tick larvae and how they do not have a rapid cold hardening response in contrast to hard ticks that possess this trait. From these results, we can infer that there is a strong need for further research to determine what allows soft ticks to survive thermal stress.


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