Which animal is the primary host for Baylisascaris procyonis eggs that are shed in feces?

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Study for the New York State Wildlife Rehabilitation Exam. Prepare with flashcards and multiple-choice questions, each with explanations. Get ready for your certification!

Multiple Choice

Which animal is the primary host for Baylisascaris procyonis eggs that are shed in feces?

Explanation:
Baylisascaris procyonis is a parasite whose adult, egg-laying stage lives in raccoons. The eggs are shed in raccoon feces and require time in the environment to become infectious. That makes the raccoon the primary host, since it produces and disperses the eggs that contaminate surroundings. Other animals, such as cats, dogs, or opossums, may ingest the eggs and harbor larvae (as paratenic hosts), but they do not shed eggs themselves. So the species that serves as the main source of infectious eggs is the raccoon.

Baylisascaris procyonis is a parasite whose adult, egg-laying stage lives in raccoons. The eggs are shed in raccoon feces and require time in the environment to become infectious. That makes the raccoon the primary host, since it produces and disperses the eggs that contaminate surroundings. Other animals, such as cats, dogs, or opossums, may ingest the eggs and harbor larvae (as paratenic hosts), but they do not shed eggs themselves. So the species that serves as the main source of infectious eggs is the raccoon.

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