infective stages of animal parasites
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Explain the infective stages of animal parasites (cestodes, protozoa, nematodes) and how they respond in environmental conditions, such as temperature, drying, and lack of a susceptible host?
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Solution Summary
This solution outlines the infective stages of animal parasites and explains how they respond to different environmental conditions.
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SOLUTION:
All parasites undergo both immature and immature stages during their life cycle (MERIAL, 2010). During the mature stage, these parasites usually take advantage of animals which harbor them and along the process reproduce themselves on these animals we call as definitive hosts. On the other hand, after some time of development within the host animal, immature stages continue their development on or in another animal such as an insect or snail. These animals that harbor the immature stages are called intermediate hosts. Now, we come to the most important part; after some series of development within the intermediate hosts, the parasite (either a nematode, cestode etc.) reaches the what we called as the infective stage, the stage whereby those parasites could invade the principal host, develop to maturity for reproduction and cause significant disease problems to the host animal (MERIAL, 2010). Now, I must emphasized here that different groups of parasites (cestodes, nematodes, protozoa, helminthes etc) may actually have different terminologies used for such infective stages).
Most of these parasites have to reach certain point of development ...
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