Commerson.E2.80.99s dolphins Cetacean bycatch
a commerson s dolphin in aquarium. the expanding trawl fisheries devastated commerson s dolphin (cephalorhynchus commersonii) populations in patagonia. trawl fisheries expanded twenty years until crashed in 1997. pelagic squid fisheries took on use pelagic trawls harmful dusky, short-beaked common dolphins, , commerson’s dolphins. there approximately 21,000 commerson’s dolphins remaining today. 2 stocks have been identified in population genetic information , bycatch levels unknown. anchovy fisheries expanding, imperative assess commerson’s dolphin population before these fisheries grow. seasonal operation of in-shore gillnet fisheries known involve bycatch of cetaceans. presently, there no known estimates of gillnet bycatch. bycatch problem in argentina political in nature. improvements in fishing technology, awareness, , large scale survey of commerson’s dolphin populations , impact of bycatch essential.