Pingers have been used on shark nets set along Queensland’s beaches since 1992. Due to an increase in whale entanglements in 2009, new pingers (Fumunda F3 whale pingers and F10 dolphin pingers) were deployed between July and August 2010. Subsequently updated research on the use of these pingers was needed. For this study, the acoustic […]
April 2024
Trial of acoustic deterrents (porpoise pingers) for prevention of porpoise (Phocoena phocoena) bycatch | Consortium for Wildlife Bycatch Reduction
Four commercially available pingers (AIRMAR, Aquamark 100, Fumunda, Save Wave Saver) were tested on vessels operating in Cornwall targeting hake with gillnets. Pingers were tested for their effectiveness at reducing incidental interactions between the gillnets and porpoises. Only one of the four tested pingers, AIRMAR, performed ‘satisfactorily’.
Multivariate analysis of behavioral response experiments in humpback whales (Megaptera novaeangliae) | Consortium for Wildlife Bycatch Reduction
A study was conducted with humpback whales to test their response to recordings of conspecific social sounds and an artificially generated tone stimulus. Experiments were conducted during humpback whales southward migration along the east coast of Australia. A total of 13 tone experiments, 15 social sound experiments and 3 silent controls were conducted during two […]
Effect of acoustic deterrents on the behavior of common dolphins (Delphinus delphis) | Consortium for Wildlife Bycatch Reduction
Six different acoustic pingers and signals were tested at sea to determine their impact on dolphin behavior. Two prototype devices from the Board Iascaigh Mhara (BIM) were tested. One was a continuous pinger (CP) and the second a responsive pinger (RP). These were tested on five occasions. A third modified RP was also tested on […]
International Marine Mammal – Longline Bycatch Mitigation Workshop | Consortium for Wildlife Bycatch Reduction
Mortality from longline bycatch threatens marine mammal species and populations such as the false killer whale (Pseudorca crassidens) in the insular Hawaiian Islands, and Risso’s dolphin (Grampus griseus) and pilot whales (Globicephala spp.) in the Northwest Atlantic. Fishermen also lose valuable target catch due to marine mammal depredation, and as a result, may face fishing […]