Estimating illegal catch of abalone and lobster along the coast of the Baja California Peninsula

Abstract

Illegal catch of abalone and lobster along the west coast of the Baja California Peninsula (Mexico) was estimated from surveys conducted among fishers and data of custom duties on live lobster exported to the USA. We estimated that illegal catch of abalone amounts to 62 t yr-1 (27% of the commercial catch) and illegal catch of lobster amounts to 64 t yr-1 (5% of the commercial catch). The two methods used in this study to estimate the illegal lobster catch yielded similar and consistent results (4.7% of the legal catch when using survey data and 4.5% when using data on custom duties for 1989-2002). We conclude that the methods of estimation are useful and reliable because they are based on direct sources of information. The methods could be used for a bottom-up approach to estimate illegal catch.

Un enfoque sistémico en los agronegocios: Oportunidades para el desarrollo rural

“…De estas especies, los que se cultivan de manera intensiva son el "rojo" (CONAMER, 2009;Cook, 2019), y en menor cantidad el "azul" y "amarillo", ya que su biotecnología es completa (INAPESCA, 2013;SEPESCABC, 2015). A pesar de que algunas poblaciones naturales aun sostienen algunas pesquerías relativamente redituables, existe poca inversión privada para desarrollar la acuicultura de especies emergentes, aun cuando existe tecnología para cultivo en tierra y mar (Ponce-Díaz et al, 1998;Zertuche-González et al, 2014). Es necesario invertir energía y recursos al estudio y desarrollo de innovación en acuicultura para esta y otras especies de la zona como, el "abulón" "amarillo" (H. corrugata), "negro" (H. cracherodii) y "chino" (H. sorenseni).…”

Life History Parameters in the Edible SnailAdelomelon ancillafrom Patagonian Waters

“…For some marine gastropods (e.g., Concholepas concholepas (Bruguière, 1789) in Chile and the abalone Haliotis spp. in Baja California; Leiva & Castilla, 2002), due to their high economic value and excessive capture, the populations have shown serious problems of overexploitation (Tegner, 1989;Castilla, 1996;Ponce-Díaz et al, 1998;Hobday et al, 2001). Recently, Torroglosa & Giménez (2010) stated that Z. dufresnei presented a smaller size at reproduction maturation (131 mm and 128 mm for females and males respectively) on the same gastropod population ten years after exploitation.…”