Summary
The paper records unsuccessful attempts to transmitT. mutans andB. bigemina using adultR. appendiculatus fed as nymphs on cattle demonstrating parasitaemias of the appropriate parasite, and ofT. parva by adultR. evertsi fed in their immature stages on a steer demonstrating piroplasms ofT. parva. An analysis of the pertinent literature casts some doubt as to the significance of the two species of ticks referred to in the transmission of these parasites, particularly under field conditions.
Résumé
Cet article rapporte les essais infructueux de transmission deT. mutans et deB. bigemina au moyen de tiques adultesR. appendiculatus nourries au stade nymphal sur des bovins ayant des parasitémies positives de l’agent approprié, et deT. parva au moyen d’adultesR. evertsi nourris pendant leurs phases immatures sur une génisse infectée parT. parva. Une analyse des publications pertinentes sur ce sujet jette quelque doute sur la réalité du pouvoir de transmission attribué à ces deux espèces de tiques, au moins dans les conditions naturelles.
Sumario
Se registran en el trabajo intentos sin éxito para transmitirT. mutans yB. bigemina usandoR. apendiculatus adultos alimentadas cuando ninfas en ganado vacuno con parasitemias del parásito en cuestión, y deT. parva porR. evertsi adultos alimentados en sus estadíos inmaduros en un novillo con piroplasmas deT. parva. Un análisis de la literatura pertinente arroja cierta duda sobre el significado de las dos especies de garrapatas referidas en la transmisión de los parasiton en cuestión, particularmente bajo condiciones de campo.
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Purnell, R.E., Branagan, D. & Brown, C.G.D. Attempted transmission of some piroplasms by rhipicephalid ticks. Trop Anim Health Prod 2, 146–150 (1970). https://doi.org/10.1007/BF02359681
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DOI: https://doi.org/10.1007/BF02359681