Improving the welfare of farmland invertebrates
Grantee: Dr. Ruth Feber
Institution: Wildlife Conservation Research Unit, Recanati-Kaplan Centre, Department of Zoology, University of Oxford, United Kingdom
Grant amount: $58,448
Grant type: Challenge grant
Focal species: Butterflies (Rhopalocera sp.)
Conservation status: Near threatened
Disciplines: Entomology, population ecology, physiology
Research location: United Kingdom
Project summary
Invertebrates, particularly insects, often have complex life histories. Juveniles (which make up the overwhelming majority of invertebrate numbers) may experience a range of different life quality outcomes. In Lepidoptera (butterflies and moths), for example, adults are the most visible stage, but the much more abundant larvae are less mobile than adults and are particularly vulnerable to negative stimuli including starvation and disease.
This project will use lepidopteran larvae as a model for auditing the welfare impact of agricultural activities on invertebrates. Juvenile stages of Lepidoptera tend to comprise the largest proportion of the total lifespan in temperate regions and, as juveniles, they are exposed to a wide range of agricultural practices that have the potential to affect their welfare. Lepidoptera are also among the better-studied invertebrates, with published data on the ecology, life histories, and survivorship of some species. This knowledge will be used to help inform welfare impact assessments.
The study will adapt the Quality Adjusted Life Year (QALY) methodology to quantify the welfare impacts of agriculture, which has recently been adapted by Teng et al. (2018) to compare the impact of diseases of domestic animals with a Welfare Adjusted Life Year (WALY). This project aims to extend the QALY to take into account the number of individuals affected by a specified action.
Why we funded this project
Farms take up nearly half of the world’s habitable land, but there is a lack of research into how agricultural management practices might impact wild animals, especially invertebrates. In order to improve welfare for invertebrates, we first need to understand how to measure welfare. This project will explore a model to quantify wild insect health and well-being. We were especially attracted to this project because it will repurpose existing data, allowing the research objectives to be accomplished more cheaply and with less animal suffering than might otherwise be required. We were also excited by the PI’s interest in quantifying welfare using a QALY-like framework, which fits perfectly with our utilitarian approach and could lead to actionable policy recommendations.
