Why would that be true? there are certainly plant parasitic nematodes. I’ve pulled up squash seeds after them not sprouting and they’ve been full of nematodes.
AH. And again its probably Anisakis, which has a life cycle entirely reliant on fish. They’re normal, even expected in cod. But beyond that as far as I’m aware these sorts of large roundworms are not the sort of nematodes we’re talking about with vegetables. The sort of parasitic or damaging nematodes than cause problems or damage to crops tend to be microscopic. And tend not to, you know burrow through flesh.
I’d agree that is a good thing. After all this anisakis on the mind I was watching fruit flies circling ripe peaches and being thankful Drosophila larvae are not carnivorous once you ingest them! I grew to hate those little bastards anyway in high school genetics.
Sorry, not trying to be nasty. Been a veterinarian for the past ~20 years. I’ve seen enough mammal parasite nematodes of all varieties to choke a dog (and a few times quite literally that…).
All of the plant nematodes I’ve run across have been dramatically smaller than the mammal hosted ones, and have come in a variety of colors from clearish to orange or brown.
The mammal ones all look weirdly similar. (and do yourself a favor, do not google image “roundworm” unless you haven’t eaten recently…)