“Prioritise soil animals over farmed invertebrates?” by Vasco Grilo🔸

Summary I would say the total welfare of soil animals is overdetermined to be much larger than that of farmed invertebrates in absolute terms. The individual welfare per animal-year of soil ants and termites should not differ much from that of farmed invertebrates, and I calculate the population of soil ants and termites is 3.93 M times that of farmed black soldier fly (BSF) larvae and mealworms, and 652 k times that of farmed shrimps. Projects targeting soil animals receive way less funding than ones targeting farmed invertebrates. The Wild Animal Initiative (WAI) granted 460 k$ to projects targeting invertebrates until 7 November 2025. In contrast, the Shrimp Welfare Project (SWP) received 2.9 M$ in 2024. I believe interventions changing land use can increase welfare much more cost-effectively than ones targeting farmed invertebrates. I estimate funding the Centre for Exploratory Altruism Research's (CEARCH's) High Impact Philanthropy Fund (HIPF), which I calculate increases agricultural land by 1.29 k m2-years per $, changes the welfare of soil ants, termites, springtails, mites, and nematodes 3.43 k times as cost-effectively as SWP's Humane Slaughter Initiative (HSI) increases the welfare of shrimps. I recommend research on the welfare of soil animals in different biomes over pursuing whatever land use change interventions naively look the most cost-effective. I have little [...] ---Outline:(00:11) Summary(03:04) The total welfare of soil animals is much larger in absolute terms(08:37) Projects targeting soil animals receive way less funding(09:23) Interventions changing land use can increase welfare much more cost-effectively than ones targeting farmed invertebrates(10:29) I recommend research informing how to increase the welfare of soil animals(11:20) There is no escape from the uncertainty of the effects on soil animals(14:27) Interested in funding research informing how to increase the welfare of soil animals?(14:54) Acknowledgements --- First published: November 15th, 2025 Source: https://forum.effectivealtruism.org/posts/7pwjTpiaD4ytj4W9Y/prioritise-soil-animals-over-farmed-invertebrates --- Narrated by TYPE III AUDIO. ---Images from the article:Apple Podcasts and Spotify do not show images in the episode description. Try Pocket Casts, or another podcast app.