Life Cycle Studies of the Tick Species, Amblyomma Lepidum, Hyalomma Anatolicum Anatolicum and Rhipicephalus Evertsi Evertsi under Laboratory Conditions

  • O. M. Yassir
  • O. M. Osman
  • T. H. El-Amin
Tick Biology


Immature stages of Amblyomma lepidum were fed on rabbit ears and the adult ones on calf ear. There was a three-host type of development during an average period of 160.5 days. The mean larval feeding period was 5 days, 7 days for nymphs and 14.5 for females. At 27 ± 1°C and 100% r.h. the engorged larvae required 21 days for moulting and nymphs took 22 days to develop to adults. The pre-oviposition period was 14.2 days and the oviposition period was 21.4 days during which a mean number of 7564.6 eggs were laid. Hyalomma anatolicum anatolicum and Rhipicephalus evertsi evertsi were fed on rabbit ears. The larvae, nymphs and adults of Hyalomma ticks fed for 4.6 and 8.5 days, respectively. The larvae and nymphs of R. e. evertsi fed sequentially on the same host for 14 days while the females took 7.5 days to engorge. At 27 ± 1°C and 75–80% r.h. the engorged larvae and nymphs of H. a. anatolicum moulted after a further 8.5 and 13 days respectively. The engorged nymphs of R. e. evertsi at 27 ± 1°C and 75–80% r.h. moulted 14.5 days after dropping off the host. At 27 ± 1°C and 75–80% r.h. the preoviposition and oviposition periods of H. a. anatolicum were 4.6 and 20.8 days, while those of R. e. evertsi were 5.4 and 14 days. The average number of eggs laid per female under the same conditions (27± 1°C and 75–80% r.h.), was 4684.6 for H. a. anatolicum and 3392 for R. e. evertsi.

Key Words

Ticks Amblyomma Hyalomma Rhipicephalus life cycle 


Les phases immatures de tiques Amblyomma lepidum ont été alimentées sur les oreilles des lapins et les phases adultes sur les oreilles des veaux. Il y a eu un développement de type a trois hôtes pendant une période moyenne de 160.5 jours. La période moyenne d’alimentation était de 5 jours. Sept jours pour les nymphes et 14.5 jours pour les femelles. A une température de 27± 1°C et humidité relative de 100 %, les larves qui ont pris du sang nécessitent 21 jours pour la mue et les nymphes nécessitaient 22 jours pour se développer en adultes. La période de pré-ponte et ponte de oeufs étaient de 14.2 et 21.4 jours respectivement avec une production total environnement 7564.6 oeufs. Hyalomma anatolicum anatolicum et Rhipicephalus evertsi evertsi ont pris du sang sur les oreilles de lapin. Les larves, nymphes et adultes des tiques Hyalomma ont pris du sang pendant 4.6 et 8.5 jours respectivement. Les larves et nymphes de R. e. evertsi ont pris du sang sur le même animal pendant 14 jours pendant que les femelles en a pris 7.5 jours. A une température de 27 ±1°C et une humidité relative de 75–80% les larves et nymphes de H. a. anatolicum font la mue après 8.5 et 13 jours. Les nymphes de R. e. evertsi elevées à 27 ± 1°C et une humidité relative de 75–80% font la mue 14.5 jours après leur descente de l’hôte. Les périodes de pre-ponte et ponte furent de 4.6 et 20 jours pour H. a. anatolicum et de 5.4 et 14.8 jours pour R. e. evertsi. Le nombre moyen des oeufs par femelle sous les mêmes conditions était de 4684.6 pour H. a. anatolicum et 3392 pour R. e. evertsi.


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Copyright information

© ICIPE 1992

Authors and Affiliations

  • O. M. Yassir
    • 1
  • O. M. Osman
    • 1
  • T. H. El-Amin
    • 2
  1. 1.Veterinary Research AdministrationKhartoumSudan
  2. 2.Department of Pharmacology, Faculty of Veterinary MedicineUniversity of KhartoumSudan

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