Btw, I think it’s unlikely that nematodes are sentient because they are so simple. The most commonly studied one has like 300 neurons. But I see they are excluded from your estimate anyway because they are not arthropods.
I think nematodes matter. I calculate soil nematodes, mites, and springtails have (in expectation) a welfare of −4.36*10^-6, −1.57*10^-5, and −2.35*10^-5 QALY/​animal-year, and an annual welfare of −296 k, −13.9 k, and −10.4 k times that of humans.
I think nematodes matter. I calculate soil nematodes, mites, and springtails have (in expectation) a welfare of −4.36*10^-6, −1.57*10^-5, and −2.35*10^-5 QALY/​animal-year, and an annual welfare of −296 k, −13.9 k, and −10.4 k times that of humans.