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MORPHO histological and ultrastructural comparison of testicles of Amblyomma cajennense fasting and fed

Grant number: 12/01850-5
Support type:Regular Research Grants
Duration: September 01, 2012 - August 31, 2014
Field of knowledge:Agronomical Sciences - Veterinary Medicine
Principal Investigator:Pablo Henrique Nunes
Grantee:Pablo Henrique Nunes
Home Institution: Instituto de Biociências (IB). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil


Ticks, one of the most important groups of arthropods are ectoparasites that suck the blood of vertebrates and are of great epidemiological importance, because they are vectors of many pathogens. These animals belong to the phylum Arthropoda, class Arachnida, subclass Acari and are classified into three families: Ixodidae, Argasidae and Nutalliellidae. They are widely distributed geographically and can parasitize a wide variety of vertebrates, including man. The tick species Amblyomma cajennense, popularly known as lone star tick, has great medical importance because it is vector of Rickettsia rickettsii, the cause of Brazilian spotted fever (BSF), which can lead the host to death. Despite increasing research with these animals, there are still gaps in the literature about some of the reproductive process of this ticks. Thus, this work will aim to describe in detail the testes of A. cajennense in fasting and fed, emphasizing the process of maturation of gametes and the formation of the spermatophore. (AU)

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
ANHOLETO, LUIS A.; NUNES, PABLO H.; REMEDIO, RAFAEL N.; CAMARGO-MATHIAS, MARIA I. Testes of fed and unfed Amblyomma cajennense ticks (Acari: Ixodidae). First morphological data. Acta Zoologica, v. 96, n. 3, p. 375-382, JUL 2015. Web of Science Citations: 2.

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