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- Title
CAPACIDADE DE SOBREVIVÊNCIA DO EMBRIÃO DE Rhipicephalus microplus (CANESTRINI, 1887) (ACARI: IXODIDAE) A ALTERAÇÕES BRUSCAS DE TEMPERATURA.
- Authors
Pinheiro, Michele Costa; Sá-Hungaro, Iwine Joyce; Martins, Camila Dantas; Raia, Vanessa Almeida; Famadas, Kátia Maria
- Abstract
Embryogenesis is a key event in the development of arthropods, especially when it occurs in the environment, such as ticks. Among the abiotic factors that influence the life cycle of these arthropods, the temperature seems to be the most important. Baixada Fluminense has been recorded by the Meteorological Station of Pesagro -Rio significant fluctuations in daily temperature. Justified then elucidate the behavior of Rhipicephalus microplus embryo to variations in temperature. For this purpose experiments were performed under controlled laboratory conditions ( 27 ± 1 ° C and 80 ± 10 % RH ), in which embryos on the 15th day of incubation were subjected to different exposure times at extremes of temperature. The incubation period of eggs of R. microplus used in this study was 23 ± 0.78 days. In all treatments was possible to observe the presence of rectal bag by optical microscopy. It can be concluded that embryos R. microplus exposed for different periods of temperatures has the capability of supporting at least 36 hours at 18°C and 32°C , these temperatures, below minimum and above the maximum average found in the average region without these are harmful to the embryo.
- Subjects
EMBRYOLOGY; ARTHROPODA; ABIOTIC environment; RHIPICEPHALUS; MICROSCOPY
- Publication
Archives of Veterinary Science, 2014, Vol 19, Issue 1, p17
- ISSN
1517-784X
- Publication type
Article
- DOI
10.5380/avs.v19i1.33097