Hepatozoon caimani check for this species in other resources - life-cycle - Caiman c. cro codilus check for this species in other resources - Caiman c. ya care check for this species in other resources - Melanosuchus niger check for this species in other resources - caimans - Rana catesbeiana check for this species in other resources - Leptodactylus fuscus check for this species in other resources - frogs - Culex fatigans check for this species in other resources - Brazil"/>
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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 98, No. 1, 2003, pp. 103-113
Bioline Code: oc03044
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 98, No. 1, 2003, pp. 103-113

 en Development of Hepatozoon caimani check for this species in other resources (Carini, 1909) Pessôa, De Biasi & De Souza, 1972 in the Caiman Caiman c. crocodilus, the Frog Rana catesbeiana check for this species in other resources and the Mosquito Culex fatigans check for this species in other resources
Ralph Lainson; Ilan Paperna & Roberto D Naiff

Abstract

The sporogony of Hepatozoon caimani check for this species in other resources has been studied, by light microscopy, in the mosquito Culex fatigans check for this species in other resources fed on specimens of the caiman Caiman c. crocodilus showing gametocytes in their peripheral blood. Sporonts iniciate development in the space between the epithelium of the insect gut and the elastic membrane covering the haemocoele surface of the stomach. Sporulating oocysts are clustered on the gut, still invested by the gut surface membrane. Fully mature oocysts were first seen 21 days after the blood-meal. No sporogonic stages were found in some unidentified leeches fed on an infected caiman, up to 30 days following the blood-meal. When mosquitoes containing mature oocysts were fed to frogs ( Leptodactylus fuscus check for this species in other resources and Rana catesbeiana check for this species in other resources ), cysts containing cystozoites developed in the internal organs, principally the liver. Feeding these frogs to farm-bred caimans resulted in the appearance of gametocytes in their peripheral blood at some time between 59 and 79 days later, and the development of tissue cysts in the liver, spleen, lungs and kidneys. Transmission of the parasite was also obtained by feeding young caimans with infected mosquitoes and it is suggested that both methods occur in nature. The finding of similar cysts containing cystozoites in the semi-aquatic lizard Neusticurus bicarinatus check for this species in other resources , experimentally fed with infected C. fatigans, suggests that other secondary hosts may be involved.

Keywords
Hepatozoon caimani check for this species in other resources - life-cycle - Caiman c. cro codilus check for this species in other resources - Caiman c. ya care check for this species in other resources - Melanosuchus niger check for this species in other resources - caimans - Rana catesbeiana check for this species in other resources - Leptodactylus fuscus check for this species in other resources - frogs - Culex fatigans check for this species in other resources - Brazil

 
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