Identificación de stocks de rape (Lophius piscatorius) en aguas del suroeste europeo

• Main Author: Cañás, Lucía
• Format: Doctoral or Postdoctoral Thesis
• Language: Spanish
• Published: 2012
• Subjects: Pesquerías; Centro Oceanográfico de A Coruña; Lophius piscatorius; anglerfish; Northeast Atlantic; stock identification; fisheries; parasite; anisakid nematodes; biological tag; otolith shape analysis; stock assessment; North Atlantic
• Online Access: http://hdl.handle.net/10508/1005; http://hdl.handle.net/10261/322248

tesis doctoral Abstract Anglerfish, Lophius piscatorius, is one of the most valuable species of bottom fisheries of the Southwest of Europe. In the Northeast Atlantic, 3 stocks are considered, with boundaries that were established for assessment and management purposes. This Ph.D. Thesis explores whether the current stock structure in southwestern Europe has a biological support. Chapter 1 introduces the biological features of the anglerfish, its fishery and the assessment and management process of this resource. Chapter 2 outlines the objectives of this work and Chapter 3 explains the material and general methodologies employed. The Chapters 4 and 5 describe the use of the otolith shape analysis and the parasites as biological tags in stock identification studies of anglerfish. In Chapter 6, the results of both techniques were evaluated together with information from previous studies of genetic, body morphology and tagging-recapture. The implications of considering a single stock of anglerfish in the perception of the resource status are analysed in the Chapter 7.