south asian river dolphin population

Bashir, T, A Khan, P Gautam, & SK Behera. Can acoustic deterrent devices reduce by-catch in the Cornish inshore gillnet fishery? Khan told Mongabay-India that all the dolphins are restricted to the Indus river mainstream but the highest density is between Guddu and Sukkur barrages (Sindh and Balochistan provinces) with 1,200 dolphins. Meanwhile in India, the dolphin population is significantly lower. Interactions between the Indian River Lagoon blue crab fishery and the bottlenose dolphin, Tursiops truncatus, Reactions of harbor porpoises Phocoena phocoena and herring Clupea harengus to acoustic alarms, A field experiment using acoustic alarms (pingers) to reduce harbour porpoise by-catch in bottom-set gillnets. Platanista gangetica. But he thinks that there may be a possibility in future to revive this proposal when India-Pakistan relationships improve and wildlife conservation gets more importance in transnational boundaries. In: IUCN 2012. 44 pp. Current Science 97(8): 1143-1151. Since 1992, WWF along with the Sindh Wildlife department have led a programme rescuing dolphins stranded in irrigation canals, releasing them back into the main river. But agencies responsible for wildlife preservation presumed the Indus dolphin population had been wiped out,  before they were re-discovered in 2007. Final report to the New England Aquarium on pinger displacement trials for Ganges River dolphins Platanista gangetica in the Sundarbans mangrove forest, Bangledesh, Trial of acoustic deterrents (porpoise pingers) for prevention of porpoise (Phocoena phocoena) bycatch, Effect of acoustic deterrents on the behavior of common dolphins (Delphinus delphis), Hector's dolphin risk assessments: old and new analyses show consistent results, Large Cetaceans (maximum length > 7.5 meters). WWF India’s survey in 2018  pegged their population to be between 5 and 11 individuals – not much different from earlier surveys. “Historically Indus dolphin was hunted and oil was used as emollient for boats and for bait. There were no irrigation barrages and dams which, when came up in big numbers, degraded the Indus river dolphin’s habitat leading to a decline in population, revealed field studies of the World Wide Fund for Nature (WWF). Pinger effects stronger at quiet sites; no habituation observed, exclusion of porpoises following pinger use for as much as 7 hrs, DDD's caught significantly fewer porpoises but no significant difference in dolphin bycatch was observed, Sock DMD did not affect depredation. Smith, BD & GT Braulik. Additionally, the presence of dolphins in Beas river too has been well-documented in old gazetteers of Punjab’s Gurdaspur for the year 1914, 1930 and 1936. False killer whale (Pseudorca crassidens) echolocation and acoustic disruption: implications for longline bycatch and depredation, Physical and psychological deterrence strategies to mitigate odontocete by-catch and depredation in pelagic longline fisheries: progress report, Odontocete bycatch and depredation in longline fisheries: a review of available literature and of potential solutions, Significant conservation benefits obtained from the use of a new fishing gear in the Chilean Patagonian toothfish fishery, An investigation of acoustic deterrent devices to reduce cetacean bycatch in an inshore set net fishery, Extension trial of an acoustic deterrent system to minimize dolphin and porpoise bycatch in gill and tangle net fisheries, Pelagic longline fishing trials to shape a mitigation device of the depredation by toothed whales, Spatial and temporal impact of pingers on porpoises, Potential limits to anthropogenic mortality of small cetaceans in coastal waters of British Columbia, The effect of acoustic alarms on the by-catch of harbour porpoises in the Danish North Sea gill net fishery, Use of pingers in the Danish North Sea wreck net fishery, Reactions of Hector's dolphins to acoustic gillnet pingers, Evaluation of exclusion grids to reduce the bycatch of dolphins, turtles, sharks and rays in the Pilbara trawl fishery, The effect of pingers on harbour porpoise, Phocoena phocoena bycatch and fishing effort in the turbot gill net fishery in the Turkish Black Sea coast, Behavioral responses of bottlenose dolphins, Tursiops truncatus, to gillnets and acoustic alarms, Pingers as deterrents of bottlenose dolphins interacting with trammel nets.

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