Natural and experimental infection of the lizard Ameiva ameiva with Hemolivia stellata (Adeleina: Haemogregarinidae) of the toad Bufo marinus

Parasite

C.M. Franco¹  M.C. De Souza¹  R. Lainson¹ 

[1] Departamento de Parasitologia, Instituto Evandro Chagas, Almirante Barroso 492,66090-000 Belém,Pará,Brazil

关键词: Brazil;    transmission;    ticks;    Amblyomma rotondatum;    lizard;    amphibian;    Ameiva ameiva;    Bufo marinus;    haemogregarine;    Apicomplexa;    Hemolivia stellata;   

Others  :  808594
DOI  :  doi:10.1051/parasite/2007144323

 received in 2007-05-30, accepted in 2007-06-29,  发布年份 2007

【 摘 要 】

Developmental stages of a haemogregarine in erythrocytes of the lizard Ameiva ameiva (Teiidae), from Pará State, north Brazil, were shown to be those of Hemolivia by the nature of the parasite’s sporogonic cycle in the tick Amblyomma rotondatum. The type species, Hemolivia stellata Petit et al., 1990 was described in the giant toad Bufo marinus and the tick Amblyomma rotondatum, also from Pará State, and in view of the fact that A. ameiva and Bufo marinus share the same habitat and are both commonly infested by A. rotondatum, the possibility that the parasite of A. ameiva is H. stellata had to be considered. Uninfected lizards fed with material from infected ticks taken from B. marinus, and others fed with liver of toads containing tissuecysts of H. stellata, were shown to subsequently develop typical Hemolivia infections, with all stages of the development similar to those seen in the naturally infected lizards. Conversely, a juvenile, uninfected toad became infected when fed with sporocysts of Hemolivia in a macerated tick that had fed on an infected A. ameiva and pieces of liver containing tissue-cysts from the same lizard. The remarkable lack of host specificity shown by H. stellata, in hosts so widely separated as an amphibian and a reptile, is discussed.

【 授权许可】

   
© PRINCEPS Editions, Paris, 2007