Comparative statistical analysis of incidental dolphin mortality, during fishing trips of the Mexican purse seine tuna fishery in the Eastern Pacific Ocean recorded by two scientific observer programs

• Michel J. Dreyfus-Leon ^[1] ; Elena Solana-Arellano ^[2]
  1. [1] Instituto Nacional de Pesca y Acuacultura
  2. [2] Centro de Investigación Científica y Educación Superior de Ensenada
• Localización: Revista de biología marina y oceanografía, ISSN 0718-1957, ISSN-e 0717-3326, Vol. 54, Nº. 3, 2019, págs. 350-354
• Idioma: inglés
• Títulos paralelos:
  • Análisis estadístico comparativo de la mortalidad incidental de delfines en viajes de pesca de embarcaciones atuneras mexicanas en el Pacífico oriental, registrada por dos programas de observadores científicos
• Enlaces
  • Texto completo  1    2 (pdf) 
• Resumen

  • Scientific observer programs in fisheries are being deployed worldwide in order to obtain robust data for fishery studies, and in relation to its interaction with target and bycatch species. A comparison between two observer programs in Mexican purse seine tuna fishery in the Eastern Pacific Ocean is performed considering the incidental mortality per trip as a metric recorded by both observers programs from 1999 to 2016. A Bayesian t-test approximation was used for the comparison between the two methods since, due to its probabilistic nature reduces uncertainty. The analysis showed a very low probability of differences for the estimated bycatch rate between both programs.