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A note on the status of the dusky dolphins (Lagenorhynchus obscurus) off Peru
Van Waerebeek, K. (1994). A note on the status of the dusky dolphins (Lagenorhynchus obscurus) off Peru. Rep. Int. Whal. Commn. Special Issue 15: 525-527
In: Report of the International Whaling Commission. International Whaling Commission: Cambridge. ISSN 0143-8700, more

Available in Author 
    VLIZ: Open Repository 242678 [ OMA ]

Keywords
    Delphinus capensis; Lagenorhynchus obscurus (Gray, 1828) [WoRMS]; Phocoena spinipinnis (Burmeister, 1865) [WoRMS]; Tursiops truncatus (Montagu, 1821) [WoRMS]; Marine
Author keywords
    SOUTH PACIFIC; INCIDENTAL CATCHES; FISHERIES; MANAGEMENT; DUSKY DOLPHINS; LONGBEAKED COMMON DOLPHINS; BURMEISTER'S PORPOISE; BOTTLENOSE DOLPHINS

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  • Van Waerebeek, K., more

Abstract
    This paper briefly examines the cetacean catch composition by species in Peruvian fisheries between 1984 and 1993. Despite a number of difficulties in interpreting the data, there is a significant decline in the proportion of dusky dolphins recorded between 1985-90 (77.5%) and 1991-93 (52.8%). During the same period the proportion of long-beaked common dolphins increased from 6.7% to 31.8%. Possible reasons for this are discussed. One possibility is that this reflects a true decrease in the abundance of dusky dolphins in response to exploitation. It is argued that the precautionary principle requires that effective conservation measures are implemented as a matter of urgency. In addition, studies should be carried out to determine the true reason for the change in proportions.

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