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> some wild species of fish—like hake, herring, and mackerel—had an infection rate over 90 percent, but the study found no farmed fish to be infected with nemat
by skolos 9y ago
> some wild species of fish—like hake, herring, and mackerel—had an infection rate over 90 percent, but the study found no farmed fish to be infected with nematodes..
Did not expect to see the rate this high.
- ufo 9y agoIt sounds about right. The world is full of parasites...
- pvaldes 9y agoIs true that farmed saltwater fish do not have Anisakidae nematodes normally, because they aren't feed with live bait normally and the life cycle of this nematode is not direct and can't be completed. On the other hand, I will take the flashing 90% infection rate with a grain of salt, for some reasons. First because this rate is not useful if we count together fishes with a 500 worms load, and fishes hosting one single tiny 1mm long worm. Second, because infection rate is heavily seasonal. Third, because parasite distribution is patched. If we speak of a single type of roundworm some stocks could be heavily affected, but most of them aren't. Mixing saltwater with freshwater and speaking of all parasites together the percent should be closer to 100%.