Development of the Paragonimus heterotremus eggs and it's larvae stages in the first intermediate host

Pham Ngoc Doanh
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Authors

  • Pham Ngoc Doanh VAST

DOI:

https://doi.org/10.15625/0866-7160/v26n2.6873

Abstract

The eggs of the lung fluke Paragonimus heterotremus were cultured in laboratory and experimentally infected to the first intermediate hosts. The eggs require 13-17 days in summer or 24-30 days in winter for completing the embryonation to hatch into miracidium. The miracidia are collected to expose to 5 snail species (Oncomelania sp.1; Oncomelania sp.2; Melanoides tuberculatus; Katayama nosophora and Katayama sp.). As results, only 2 species Oncomelania sp.1 and Oncomelania sp.2 are susceptible to be infected at very high rate 100% and 80.0%, respectively. Within the snail body, the larvae develop through 4 stages: sporocyt, mother redia, daughter redia and cercaria. The development time of all stages  require 80-120 days. The living ability of miracidia and cercaria as well as the time at which cercaria escape from snails are also disscused.

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Published

03-09-2015

How to Cite

Doanh, P. N. (2015). Development of the Paragonimus heterotremus eggs and it’s larvae stages in the first intermediate host. Academia Journal of Biology, 26(2), 6–10. https://doi.org/10.15625/0866-7160/v26n2.6873

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