Open AccessJournal Article
Environmental stress and parasitic infections: I. The effects of Gramoxone and Hexadrin on embryo and hatching of Fasciola gigantica miracidia.
Igbinosa Ib,Okafor Fc +1 more
TLDR
Results show that at sublethal concentrations they cause prolongation of embryonic processes and inhibition of hatching of miracidia, and at 4 ppm and 5.5 ppm the pesticides achieve 99.0% mortality of eggs.Abstract:
The effect of two chemical compounds commonly used in agriculture, Gramoxone (a herbicide) and Hexadrin (an insecticide) on embryonic development and hatching of Fasciola gigantica miracidia were experimentally assessed. These two pesticides were introduced in varying quantities into petri dishes containing unembryonated eggs of the trematode for a period of 30 days. LC50 (lethal concentration for 50% hatching) values were determined for them. For gramoxone it was 2 ppm and for Hexadrin it was 2.5 ppm. Results also show that at 4 ppm and 5.5 ppm the pesticides achieve 99.0% mortality of eggs. At sublethal concentrations they cause prolongation of embryonic processes and inhibition of hatching of miracidia.read more
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Journal ArticleDOI
Pollution toxicity to the transmission of larval digeneans through their molluscan hosts.
TL;DR: It is apparent from these studies that the influence of pollutants on digenean transmission is highly complex with much of the observed effects in the laboratory often masked by a complexity of other factors in the field.
Journal ArticleDOI
Fasciola gigantica: Cercarial shedding pattern from Lymnaea natalensis after long-term exposure to cadmium at different temperatures
TL;DR: Results clearly showed that host exposure to 100 microg/l Cd significantly affected the pattern of Fasciola development inside its snail host, and that the acclimatization temperature was a key factor affecting the role played by Cd.
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