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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 97, No. 6, 2002, pp. 843-846
Bioline Code: oc02161
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 97, No. 6, 2002, pp. 843-846

 en Lack of Parthenogenesis by Amblyomma cajennense check for this species in other resources (Acari: Ixodidae)
Carolina MV de Freitas; Romário C Leite; Cristina ML Lopes; Daniel S Rodrigues; Gustavo Fontes Paz & Paulo R de Oliveira

Abstract

Some reproductive parameters of adult stages of Amblyomma cajennense check for this species in other resources ticks were studied. The capacity of virgin females to reproduce by parthenogenesis was evaluated, during an experimental infestation, in absence of males, on a horse ( Equus cabalus check for this species in other resources ). Ticks were spread either completely free or in limited sites on the body of the animal. The engorged virgin females showed longer feeding periods and lighter body weights than those that had been fertilized. Some of these unmated females produced smaller egg masses, which had no embryonary development. On the other hand, females that had been inseminated produced larger egg masses, with normal embryonary development that led to viable larvae. Under the studied conditions, A. cajennense females did not reproduce by parthenogenesis.

Keywords
Amblyomma cajennense check for this species in other resources - ticks - Ixodidae - reproduction - parthenogenesis

 
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