Finding effective ways to direct native fish away from anthropogenic hazards and limit the spread of invasive species, without physical intervention, harming non-target fishes or interrupting aquatic commerce is a major challenge for fisheries management. One option is to target fish sensory systems to manipulate behavior using attractive or repulsive cues. Many, if not all species of fish, use sound as part of their behavioral repertoire and display varying degrees of phonotaxis. Sound has inherent advantages over other sensory stimuli such as light or odor as underwater sound attenuates slowly, is highly directional and is unimpeded by low light or water turbidity. This review details the use of acoustics to deter and guide fish movements for a wide variety of fishes, before critically assessing the benefits and limitations of the technology. No single method of fish deterrence is a “one size fits all”, and therefore this review will assist both managers and researchers attempting to use acoustic deterrents for different fish orders.

Acoustic deterrents to manage fish populations

Peces - Orden Clupeiformes - Familia Clupeidae en la Enciclopedia Virtual de Vertebrados Espanoles, http://www.vertebradosibericos.org/

/pdf/saboga-alosa-fallax-lacepede-1803-4qaulcllhm.pdf

Saboga – Alosa fallax (Lacépède, 1803)

Water is abstracted from riverine, estuarine and marine environments to supply potable water,
power stations, hydroelectric facilities and industry. Such abstractions inevitably carry with
them the risk of fish entrainment, defined as „the drawing in of fish of any life stage at a water
intake‟ (Turnpenny & O‟Keeffe, 2005). It is possible, however, that entrainment losses can be
reduced to an acceptable level with the use of appropriate fish screening technologies.
Fish protection solutions for water intakes are manifold and include: alterations to intake
design; management of the abstraction regime; modification of existing screens to make them
“fish friendly”; provision of fish return systems; and the installation of physical screens or
behavioural deterrents to prevent or minimise entrainment. There are however a range of site
specific constraints which influence the suitability of each solution.

N. O'Keeffe

Papers

Preliminary investigations into the response of O+ twaite shad (alosa fallax) to ultrasound and its potential as an entrainment deterrent