(unranked):
How many species of parasitic roundworms are there?
Approximately 60 species of roundworms are parasites of humans. Some nematode infections can be transmitted directly from person to person but, in others, the nematode eggs must mature outside the host. The parasites may spend a part of their life cycle in the soil before becoming infective to humans.
How many roundworms are there?
Not only are there more than 15,000 known species of roundworms, but there are many thousands of individual nematodes in even a single handful of garden soil. And they keep coming! Some species of roundworm may contain more than 27 million eggs at one time and lay more than 200,000 of them in a single day.
How many parasitic worms are there?
There may be as many as 300,000 species of parasites affecting vertebrates, and as many as 300 affecting humans alone.
How many parasitic nematodes are there?
Present estimates are that only approximately 14,000–16,000 species of parasitic nematodes have been described from all taxa of slightly more than 48,000 currently recognized species of vertebrates.
More useful articles on a similar topic 👇
How many worms are in the world total?Does garlic kill worms in the body?
