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Wiley InterScience | ||||||||||||||||||||||||||||||
  Conservation BiologyVolume 20 Issue 1, Pages 163 - 169 Published Online: 11 Jan 2006 ©2010, Society for Conservation Biology Published on behalf of the Society for Conservation Biology
Abstract | References | Full Text: HTML, PDF (Size: 181K) | Related Articles | Citation Tracking  Bycatch of Marine Mammals in U.S. and Global Fisheries
Contributed Papers
Copyright 2006 Society for Conservation Biology KEYWORDS cetacean • fisheries • pinniped KEYWORDS cetáceo • pesquerías • pinnípedo ABSTRACTAbstract: Fisheries bycatch poses a significant threat to many populations of marine mammals, but there are few published estimates of the magnitude of these catches. We estimated marine mammal bycatch in U.S. fisheries from 1990 to 1999 with data taken from the stock assessment reports required by the U.S. Marine Mammal Protection Act. The mean annual bycatch of marine mammals during this period was 6215 ± 448 (SE). Bycatch of cetaceans and pinnipeds occurred in similar numbers. Most cetacean (84%) and pinniped (98%) bycatch occurred in gill-net fisheries. Marine mammal bycatch declined significantly over the decade, primarily because of a reduction in the bycatch of cetaceans. Total marine mammal bycatch was significantly lower after the implementation of take reduction measures in the latter half of the decade. We derived a crude first estimate of marine mammal bycatch in the world's fisheries by expanding U.S. bycatch with data on fleet composition from the Food and Agriculture Organization. The global bycatch of marine mammals is in the hundreds of thousands. Bycatch is likely to have significant demographic effects on many populations of marine mammals. Better data are urgently needed to fully understand the impact of these interactions. ABSTRACTResumen: La captura incidental de pesquerías es una amenaza significativa para muchas poblaciones de mamíferos marinos, pero existen pocas estimaciones publicadas de la magnitud de esas capturas. Estimamos la captura incidental de mamíferos marinos en pesquerías de E.U.A. de 1990 a 1999 con datos obtenidos de los reportes de evaluación de existencias requeridos por el Acta de Protección a Mamíferos Marinos de E.U.A. el promedio de captura incidental anual de mamíferos marinos durante este período fue 6215 ± 448 (DS). La captura incidental de cetáceos y pinnípedos ocurrió en números similares. La mayor parte de la captura incidental de cetáceos (84%) y pinnípedos (98%) ocurrió en pesquerías que utilizan redes agalleras. La captura incidental de mamíferos marinos declinó significativamente a lo largo de la década, debido principalmente a una reducción en la captura incidental de cetáceos. La captura incidental total de mamíferos marinos fue significativamente menor después de la implementación de las medidas de reducción en la captura en la segunda mitad de la década. Derivamos una primera estimación cruda de la captura incidental de mamíferos marinos en las pesquerías mundiales expandiendo la captura en E.U.A. con datos sobre la composición de las flotas de la Organización Mundial de Alimentación y Agricultura. La captura incidental global de mamíferos marinos se ubica en los cientos de miles. Es probable que la captura incidental tenga efectos demográficos sobre muchas poblaciones de mamíferos marinos. Urgentemente, se requieren mejores datos para entender el impacto de estas interacciones integralmente. Paper received August 9, 2004; revised manuscript accepted March 7, 2005. | 
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Free Article from Conservation Biology |  |
The article One Hundred Questions of Importance to the Conservation of Global Biological Diversity is now available FREE online. | |
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Conservation Letters |
Conservation Letters is a new, online-only scientific journal publishing empirical and theoretical research with significant implications for the conservation of biological diversity. |
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Conservation |
Conservation is a sophisticated, readable, and utterly practical magazine for people who are serious about conservation. |
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This issue of Journal of Social Issues focuses on human attitudes toward the use of other species, the effects of relationships with companion animals on human health and well-being, and the ethical and policy implications of our interactions with other species. | |
