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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.

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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.

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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.

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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.

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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)

Submitted by allykristan on

The authors evaluated the effectiveness of DDD®03H Dolphin Dissuasive Devices, or DDD pingers (an acoustic deterrent device) to reduce common dolphin (Delphinus delphis) bycatch in a demersal pair trawler in the Bay of Biscay. Results showed that the DDD pingers reduced common dolphin bycatch by more than 90%, and that common dolphin bycatch in this trawl fishery is related to fishing zone and depth, but not necessarily factors such as time of day and haul duration.

 

 

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Incidental seabird bycatch in the Greenland Halibut fishery in northern Canada reported via at-sea observer programs

Submitted by allykristan on

This study analyzed seabird bycatch data across gear types in the Greenland Halibut Reinhardtius hippoglossoides fishery spanning 2019-2019. Northern fulmars (Fulmarus glacialis) were the most frequently reported seabird bycatch species, with August, September and October having the highest levels caught. Seabird bycatch overall was highly variable between years, but did not seem to be related to the level of total allowable catch.

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Incidental seabird bycatch in the Greenland Halibut fishery in northern Canada reported via at-sea observer programs

Submitted by allykristan on

This study analyzed seabird bycatch data across gear types in the Greenland Halibut Reinhardtius hippoglossoides fishery spanning 2019-2019. Northern fulmars (Fulmarus glacialis) were the most frequently reported seabird bycatch species, with August, September and October having the highest levels caught. Seabird bycatch overall was highly variable between years, but did not seem to be related to the level of total allowable catch.

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Incidental seabird bycatch in the Greenland Halibut fishery in northern Canada reported via at-sea observer programs

Submitted by allykristan on

This study analyzed seabird bycatch data across gear types in the Greenland Halibut Reinhardtius hippoglossoides fishery spanning 2019-2019. Northern fulmars (Fulmarus glacialis) were the most frequently reported seabird bycatch species, with August, September and October having the highest levels caught. Seabird bycatch overall was highly variable between years, but did not seem to be related to the level of total allowable catch.

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Incidental seabird bycatch in the Greenland Halibut fishery in northern Canada reported via at-sea observer programs

Submitted by allykristan on

This study analyzed seabird bycatch data across gear types in the Greenland Halibut Reinhardtius hippoglossoides fishery spanning 2019-2019. Northern fulmars (Fulmarus glacialis) were the most frequently reported seabird bycatch species, with August, September and October having the highest levels caught. Seabird bycatch overall was highly variable between years, but did not seem to be related to the level of total allowable catch.

Read More