The guitarfish, also referred to as shovelnose rays, are a family, Rhinobatidae, of rays. The guitarfish are known for an elongated body with a flattened head and trunk and small, ray-like wings. The combined range of the various species is tropical, subtropical, and warm temperate waters worldwide. (Wikipedia. 2026. Guitarfish. https://en.wikipedia.org/wiki/Guitarfish)
Participatory varietal selection (PVS) is the selection by farmers on their own fields of finished or near-finished products from plant breeding programmes. These include released cultivars, varieties in advanced stages of testing, and well characterised material such as advanced non-segregating lines in inbreeding crops, or advanced populations in outbreeding crops. (https://assets.publishing.service.gov.uk/media/57a08da2ed915d3cfd001b30/RLPSRbookchap12.pdf)
