Uso de compostos repelentes produzidos por cães resistentes ao Rhipicephalus sanguineus sensu lato para o seu controle em cães susceptiveis
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2018-02-21
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Universidade Federal de Goiás
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Rhipicephalus sanguineus sensu lato, the "brown dog tick", preferentially parasite the domestic
dog, in the latter can parasite others mammals species including humans. This tick demonstrates a
hunting behavior by its host, being widely attracted by the bark and the CO2 among other signs
related to the presence of its hosts. Despite being commonly found parasite on dogs, it is known
that some breeds such as beagles are less parasitic than other breeds like English Cocker Spaniel
which can present a parasitic load about up to 11.5 times higher than mongrel dogs. It is notable a
capacity of ticks and other arthropods in their hosts in relation to desirable or undesirable
characteristics that can perceive these by means of chemoreception of volatile compounds
emanated by these hosts. This adaptive tool is called olfactory aposematism. Olfactory apostotism
is capable of an ectoparasite in avoiding its hosts through a perception of a volatile chemical
emanated by it that signals a negative adaptive response to the arthropod. Usually this response
may be linked to immune factors, excessive grooming, inaccessibility or other factors. One of the
big problems nowadays undoubtedly is the control of ticks and diseases that are transmitted to their
hosts during the blood repast. One of the alternatives for control of parasitism in order to deter ticks
from the search for their hosts is a use of compounds found in resistant hosts that are interpreted
by these arthropods as non-hosts. These compounds demonstrate a more specific activity between
arthropod parasites and their hosts, since they were selected during an adaptation between species
involved in this parasite-host relationship forging bases of parasite selection by susceptible and
resistant hosts.
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OLIVEIRA FILHO, J. G. Uso de compostos repelentes produzidos por cães resistentes ao Rhipicephalus sanguineus sensu lato para o seu controle em cães susceptiveis. 2018. 79 f. Tese (Doutorado em Ciência Animal) - Universidade Federal de Goiás, Goiânia, 2018.