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The intensity of infection in naturally infected Formica pratensis with the metacercariae of Dicrocoelium dendriticum in relation to their size*

Published online by Cambridge University Press:  05 June 2009

Girish Chandra Srivastava
Affiliation:
Department of Parasitology, Harayana Agricultural University, Hissar, India

Abstract

2 678 naturally infected cataleptic ants of the species Formica pratensis were divided into three categories depending upon their size viz., large, medium and small, and were dissected to elucidate the intensity of infection with Dicrocoelium dendriticum. 2 233 (83.4 percent) were positive for metacercariae. The maximum number of metacercariae isolated in the three categories were 443 252 and 176 respectively. The average number of metacercariae varied greatly in the 3 categories, though no appreciable difference was observed in the percentage of infected ants. The presence of even a large number of metacercariae in the abdomen of ants seemed to cause few harmful effects.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1975

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References

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