Ultrastructure of Hepatozoon boigae (Mackerras, 1961) nov comb. from brown tree snakes, Boiga irregularis, from northern Australia

Jakes, K. A., O'Donoghue, P. J. and Whittier, J. (2003) Ultrastructure of Hepatozoon boigae (Mackerras, 1961) nov comb. from brown tree snakes, Boiga irregularis, from northern Australia. Parasitology Research, 90 3: 225-231. doi:10.1007/s00436-003-0849-y


Author Jakes, K. A.
O'Donoghue, P. J.
Whittier, J.
Title Ultrastructure of Hepatozoon boigae (Mackerras, 1961) nov comb. from brown tree snakes, Boiga irregularis, from northern Australia
Journal name Parasitology Research   Check publisher's open access policy
ISSN 0932-0113
Publication date 2003
Sub-type Article (original research)
DOI 10.1007/s00436-003-0849-y
Volume 90
Issue 3
Start page 225
End page 231
Total pages 7
Place of publication New York
Publisher Springer-Verlag
Collection year 2003
Language eng
Subject C1
300508 Parasitology
780105 Biological sciences
270503 Animal Anatomy and Histology
Abstract Intraerythrocytic bodies identified as haemogregarine gamonts were found in 29% of 97 brown tree snakes (Boiga irregularis) examined during a haematological survey of reptiles in Australasia during 1994-1998. The morphological characteristics of the parasites were consistent with those of Haemogregarina boigae Mackerras, 1961, although the gamonts were slightly larger and lacked red caps but contained distinctive polar grey capsules. Gamonts did not distend host cells but laterally displaced their nuclei. They were contained within parasitophorous vacuoles and possessed typical apicomplexan organelles, including a conoid, polar rings, rhoptries and micronemes. Schizonts producing up to 30 merozoites were detected in endothelial cells of the lungs of 11 snakes. The absence of erythrocytic schizogony suggests the parasites belong to the genus Hepatozoon. Electron microscopy also revealed the presence of curious encapsulated organisms in degenerating erythrocytes. These stages did not possess apical complex organelles and were surrounded by thick walls containing circumferential junctions and interposed strips reminiscent of oocyst sutures.
Keyword Parasitology
Apicomplexa
Hemogregarine
Phylogeny
Adeleina
Gamonts
Complex
Q-Index Code C1

 
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Created: Tue, 14 Aug 2007, 19:22:43 EST