PREVALENCE AND INTENSITY OF HAEMOGREGARINA-BALLI (APICOMPLEXA, ADELEINA, HAEMOGREGARINIDAE) IN 3 TURTLE SPECIES FROM ONTARIO, WITH OBSERVATIONS ON INTRAERYTHROCYTIC DEVELOPMENT

Citation
Me. Siddall et Ss. Desser, PREVALENCE AND INTENSITY OF HAEMOGREGARINA-BALLI (APICOMPLEXA, ADELEINA, HAEMOGREGARINIDAE) IN 3 TURTLE SPECIES FROM ONTARIO, WITH OBSERVATIONS ON INTRAERYTHROCYTIC DEVELOPMENT, Canadian journal of zoology, 70(1), 1992, pp. 123-128
Citations number
47
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Zoology
Journal title
ISSN journal
0008-4301
Volume
70
Issue
1
Year of publication
1992
Pages
123 - 128
Database
ISI
SICI code
0008-4301(1992)70:1<123:PAIOH(>2.0.ZU;2-D
Abstract
Free-ranging populations of turtles, Chelydra serpentina serpentina, C hrysemys picta marginata, and Clemmys insculpta, were examined for pre valence and intensity of Haemogregarina balli during the summers of 19 89 and 1990 in Algonquin Park, Ontario. Prevalence data indicated that C. s. serpentina was the primary intermediate host. The lower prevale nce in C. p. marginata and C. insculpta is attributed in part to the r elatively smaller surface area available for the attachment and bite o f the definitive host, Placobdella ornata. Intensities of bloodstream stages in C. p. marginata and C. insculpta were rarely greater than 1 in 10(4) erythrocytes. The intensity in C. s. serpentina ranged from 0 .5 to 30.0 in 10(3) erythrocytes. Intensity data for C. s. serpentina demonstrated quantitative and qualitative changes in parasitaemia in 2 -week intervals in 1990. It is suggested that the biology of P. ornata is an important influence in these changes. Microscopic and statistic al analysis provided independent evidence for binary fission of merozo ites in the life history of H. balli.