Unanswered Forum Topics

Behavioural Responses of Humpback Whales (Megaptera novaeangliae) to Two Acoustic Deterrent Devices in a Northern Feeding Ground off Iceland

Submitted by allykristan on

The authors conducted field studies off the coast of Iceland to measure the response of humpback whales (Megaptera noveangliae) in their feeding grounds to a whale pinger and seal scarer (acoustic deterrents). Results indicate that whale pingers caused a significant increase in humpback swimming speed and a significant decrease in surface feeding, and that seal scarers caused no significant, consistent behavioral changes.

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Behavioural Responses of Humpback Whales (Megaptera novaeangliae) to Two Acoustic Deterrent Devices in a Northern Feeding Ground off Iceland

Submitted by allykristan on

The authors conducted field studies off the coast of Iceland to measure the response of humpback whales (Megaptera noveangliae) in their feeding grounds to a whale pinger and seal scarer (acoustic deterrents). Results indicate that whale pingers caused a significant increase in humpback swimming speed and a significant decrease in surface feeding, and that seal scarers caused no significant, consistent behavioral changes.

Read More

Behavioural Responses of Humpback Whales (Megaptera novaeangliae) to Two Acoustic Deterrent Devices in a Northern Feeding Ground off Iceland

Submitted by allykristan on

The authors conducted field studies off the coast of Iceland to measure the response of humpback whales (Megaptera noveangliae) in their feeding grounds to a whale pinger and seal scarer (acoustic deterrents). Results indicate that whale pingers caused a significant increase in humpback swimming speed and a significant decrease in surface feeding, and that seal scarers caused no significant, consistent behavioral changes.

Read More

Behavioural Responses of Humpback Whales (Megaptera novaeangliae) to Two Acoustic Deterrent Devices in a Northern Feeding Ground off Iceland

Submitted by allykristan on

The authors conducted field studies off the coast of Iceland to measure the response of humpback whales (Megaptera noveangliae) in their feeding grounds to a whale pinger and seal scarer (acoustic deterrents). Results indicate that whale pingers caused a significant increase in humpback swimming speed and a significant decrease in surface feeding, and that seal scarers caused no significant, consistent behavioral changes.

Read More

Behavioural Responses of Humpback Whales (Megaptera novaeangliae) to Two Acoustic Deterrent Devices in a Northern Feeding Ground off Iceland

Submitted by allykristan on

The authors conducted field studies off the coast of Iceland to measure the response of humpback whales (Megaptera noveangliae) in their feeding grounds to a whale pinger and seal scarer (acoustic deterrents). Results indicate that whale pingers caused a significant increase in humpback swimming speed and a significant decrease in surface feeding, and that seal scarers caused no significant, consistent behavioral changes.

Read More

Effects of illumination and pot design on catch and bycatch when targeting northern shrimp (Pandalus borealis) using white LED PotLights

Study Type
Field study in the wild
Location
Scotland
Target catch
northern shrimp (Pandalus borealis)
Effect on bycatch species
increase CPUE of northern shrimp
Effect on target catch
increase in poor cod (Trisopterus minutus)
Bycatch species
Reduction technique
Fishing Gear

Effects of illumination and pot design on catch and bycatch when targeting northern shrimp (Pandalus borealis) using white LED PotLights

Study Type
Field study in the wild
Location
Scotland
Target catch
northern shrimp (Pandalus borealis)
Effect on bycatch species
increase CPUE of northern shrimp
Effect on target catch
increase in poor cod (Trisopterus minutus)
Bycatch species
Reduction technique
Fishing Gear

Effects of illumination and pot design on catch and bycatch when targeting northern shrimp (Pandalus borealis) using white LED PotLights

Study Type
Field study in the wild
Location
Scotland
Target catch
northern shrimp (Pandalus borealis)
Effect on bycatch species
increase CPUE of northern shrimp
Effect on target catch
increase in poor cod (Trisopterus minutus)
Bycatch species
Reduction technique
Fishing Gear

Effects of illumination and pot design on catch and bycatch when targeting northern shrimp (Pandalus borealis) using white LED PotLights

Study Type
Field study in the wild
Location
Scotland
Target catch
Norway lobster (Nephrops norvegicus)
Effect on bycatch species
increase in poor cod (Trisopterus minutus)
Effect on target catch
decrease
Bycatch species
Reduction technique
Fishing Gear

Effects of illumination and pot design on catch and bycatch when targeting northern shrimp (Pandalus borealis) using white LED PotLights

Study Type
Field study in the wild
Location
Scotland
Target catch
Norway lobster (Nephrops norvegicus)
Effect on bycatch species
increase in poor cod (Trisopterus minutus)
Effect on target catch
decrease
Bycatch species
Reduction technique
Fishing Gear

Effects of illumination and pot design on catch and bycatch when targeting northern shrimp (Pandalus borealis) using white LED PotLights

Study Type
Field study in the wild
Location
Scotland
Target catch
Norway lobster (Nephrops norvegicus)
Effect on bycatch species
increase in poor cod (Trisopterus minutus)
Effect on target catch
decrease
Bycatch species
Reduction technique
Fishing Gear

Effects of illumination and pot design on catch and bycatch when targeting northern shrimp (Pandalus borealis) using white LED PotLights

Submitted by allykristan on

This study reports on trials investigating the use of white Light Emitting Diodes (LEDs) to improve target catch and reduce nontarget catch in northern shrimp  (Pandalus borealis) and Norway lobster (Nephrops norvegicus) pot fisheries. Illuminated pots led to a significantly higher catch per unit effort (CPUE) of northern shrimp, but levels were still not commercially viable. LEDs also resulted in higher juvenile poor cod (Trisopterus minutus) bycatch and reduced Norway lobster (Nephrops norvegicus) catch.

Read More

Effects of illumination and pot design on catch and bycatch when targeting northern shrimp (Pandalus borealis) using white LED PotLights

Submitted by allykristan on

This study reports on trials investigating the use of white Light Emitting Diodes (LEDs) to improve target catch and reduce nontarget catch in northern shrimp  (Pandalus borealis) and Norway lobster (Nephrops norvegicus) pot fisheries. Illuminated pots led to a significantly higher catch per unit effort (CPUE) of northern shrimp, but levels were still not commercially viable. LEDs also resulted in higher juvenile poor cod (Trisopterus minutus) bycatch and reduced Norway lobster (Nephrops norvegicus) catch.

Read More

Effects of illumination and pot design on catch and bycatch when targeting northern shrimp (Pandalus borealis) using white LED PotLights

Submitted by allykristan on

This study reports on trials investigating the use of white Light Emitting Diodes (LEDs) to improve target catch and reduce nontarget catch in northern shrimp  (Pandalus borealis) and Norway lobster (Nephrops norvegicus) pot fisheries. Illuminated pots led to a significantly higher catch per unit effort (CPUE) of northern shrimp, but levels were still not commercially viable. LEDs also resulted in higher juvenile poor cod (Trisopterus minutus) bycatch and reduced Norway lobster (Nephrops norvegicus) catch.

Read More

Effects of illumination and pot design on catch and bycatch when targeting northern shrimp (Pandalus borealis) using white LED PotLights

Submitted by allykristan on

This study reports on trials investigating the use of white Light Emitting Diodes (LEDs) to improve target catch and reduce nontarget catch in northern shrimp  (Pandalus borealis) and Norway lobster (Nephrops norvegicus) pot fisheries. Illuminated pots led to a significantly higher catch per unit effort (CPUE) of northern shrimp, but levels were still not commercially viable. LEDs also resulted in higher juvenile poor cod (Trisopterus minutus) bycatch and reduced Norway lobster (Nephrops norvegicus) catch.

Read More

Effects of illumination and pot design on catch and bycatch when targeting northern shrimp (Pandalus borealis) using white LED PotLights

Submitted by allykristan on

This study reports on trials investigating the use of white Light Emitting Diodes (LEDs) to improve target catch and reduce nontarget catch in northern shrimp  (Pandalus borealis) and Norway lobster (Nephrops norvegicus) pot fisheries. Illuminated pots led to a significantly higher catch per unit effort (CPUE) of northern shrimp, but levels were still not commercially viable. LEDs also resulted in higher juvenile poor cod (Trisopterus minutus) bycatch and reduced Norway lobster (Nephrops norvegicus) catch.

Read More

Effects of illumination and pot design on catch and bycatch when targeting northern shrimp (Pandalus borealis) using white LED PotLights

Submitted by allykristan on

This study reports on trials investigating the use of white Light Emitting Diodes (LEDs) to improve target catch and reduce nontarget catch in northern shrimp  (Pandalus borealis) and Norway lobster (Nephrops norvegicus) pot fisheries. Illuminated pots led to a significantly higher catch per unit effort (CPUE) of northern shrimp, but levels were still not commercially viable. LEDs also resulted in higher juvenile poor cod (Trisopterus minutus) bycatch and reduced Norway lobster (Nephrops norvegicus) catch.

Read More

Effects of illumination and pot design on catch and bycatch when targeting northern shrimp (Pandalus borealis) using white LED PotLights

Submitted by allykristan on

This study reports on trials investigating the use of white Light Emitting Diodes (LEDs) to improve target catch and reduce nontarget catch in northern shrimp  (Pandalus borealis) and Norway lobster (Nephrops norvegicus) pot fisheries. Illuminated pots led to a significantly higher catch per unit effort (CPUE) of northern shrimp, but levels were still not commercially viable. LEDs also resulted in higher juvenile poor cod (Trisopterus minutus) bycatch and reduced Norway lobster (Nephrops norvegicus) catch.

Read More

Bycatch of short-beaked common dolphin (Delphinus delphis) in the pair bottom trawl fishery of the Bay of Biscay and its mitigation with an active acoustic deterrent device (pinger)

Study Type
Field study in the wild
Location
Bay of Biscay
Target catch
bony fishes: hake, blue whiting, mackerel
Effect on bycatch species
significantly reduced bycatch of common dolphin, both by frequency and # of individuals per haul
Effect on target catch
not assessed, but expected to have no impact
Reduction technique
Fishing Gear

Bycatch of short-beaked common dolphin (Delphinus delphis) in the pair bottom trawl fishery of the Bay of Biscay and its mitigation with an active acoustic deterrent device (pinger)

Study Type
Field study in the wild
Location
Bay of Biscay
Target catch
bony fishes: hake, blue whiting, mackerel
Effect on bycatch species
significantly reduced bycatch of common dolphin, both by frequency and # of individuals per haul
Effect on target catch
not assessed, but expected to have no impact
Reduction technique
Fishing Gear