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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
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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, meer
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| Trefwoorden |
Delphinus capensis; Lagenorhynchus obscurus (Gray, 1828) [WoRMS]; Phocoena spinipinnis (Burmeister, 1865) [WoRMS]; Tursiops truncatus (Montagu, 1821) [WoRMS]
Marien/Kust |
| Author keywords |
SOUTH PACIFIC; INCIDENTAL CATCHES; FISHERIES; MANAGEMENT; DUSKY DOLPHINS; LONGBEAKED COMMON DOLPHINS; BURMEISTER'S PORPOISE; BOTTLENOSE DOLPHINS |
| 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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