Active Forum Topics

Successful collaborative trials of simple gear modifications to reduce entanglement of whales and other megafauna in Scotland’s static pot (creel) fisheries

Submitted by allykristan on

The authors worked with creel fishers to trial and assess whether sinking rope was practical to fish with in Scottish inshore waters, and therefore to reduce entanglement risk of minke whales, humpback whales, and other megafauna. Overall, the fishers reported few problems with the modified gear, and the gear performed well underwater according to Remotely Operated Vehicle (ROV) footage and sensors. Sinking rope may be a simple, viable option to reduce entanglement risk in the Scottish creel fishery.

 

 

 

Read More

A Meta-Analysis of Bycatch Mitigation Methods for Sea Turtles Vulnerable to Swordfish and Tuna Longline Fisheries

Submitted by allykristan on

This summary study is a meta-analysis of experimental results from 41 stidues that investigated bycatch mitigation methods for sea turtles in tuna and swordfish longline fisheries. Circle hooks demonstrated effectiveness in reducing sea turtle bycatch; however, these hooks also usually use fish bait instead of hook bait, which may also be leading to the reduction in bycatch. Additionally, outcomes varied between the Atlantic, Pacific and Mediterannean which highlights the importance of regional data collection.

Read More

A Meta-Analysis of Bycatch Mitigation Methods for Sea Turtles Vulnerable to Swordfish and Tuna Longline Fisheries

Submitted by allykristan on

This summary study is a meta-analysis of experimental results from 41 stidues that investigated bycatch mitigation methods for sea turtles in tuna and swordfish longline fisheries. Circle hooks demonstrated effectiveness in reducing sea turtle bycatch; however, these hooks also usually use fish bait instead of hook bait, which may also be leading to the reduction in bycatch. Additionally, outcomes varied between the Atlantic, Pacific and Mediterannean which highlights the importance of regional data collection.

Read More

A Meta-Analysis of Bycatch Mitigation Methods for Sea Turtles Vulnerable to Swordfish and Tuna Longline Fisheries

Submitted by allykristan on

This summary study is a meta-analysis of experimental results from 41 stidues that investigated bycatch mitigation methods for sea turtles in tuna and swordfish longline fisheries. Circle hooks demonstrated effectiveness in reducing sea turtle bycatch; however, these hooks also usually use fish bait instead of hook bait, which may also be leading to the reduction in bycatch. Additionally, outcomes varied between the Atlantic, Pacific and Mediterannean which highlights the importance of regional data collection.

Read More

A Meta-Analysis of Bycatch Mitigation Methods for Sea Turtles Vulnerable to Swordfish and Tuna Longline Fisheries

Submitted by allykristan on

This summary study is a meta-analysis of experimental results from 41 stidues that investigated bycatch mitigation methods for sea turtles in tuna and swordfish longline fisheries. Circle hooks demonstrated effectiveness in reducing sea turtle bycatch; however, these hooks also usually use fish bait instead of hook bait, which may also be leading to the reduction in bycatch. Additionally, outcomes varied between the Atlantic, Pacific and Mediterannean which highlights the importance of regional data collection.

Read More

A Meta-Analysis of Bycatch Mitigation Methods for Sea Turtles Vulnerable to Swordfish and Tuna Longline Fisheries

Submitted by allykristan on

This summary study is a meta-analysis of experimental results from 41 stidues that investigated bycatch mitigation methods for sea turtles in tuna and swordfish longline fisheries. Circle hooks demonstrated effectiveness in reducing sea turtle bycatch; however, these hooks also usually use fish bait instead of hook bait, which may also be leading to the reduction in bycatch. Additionally, outcomes varied between the Atlantic, Pacific and Mediterannean which highlights the importance of regional data collection.

Read More

A Meta-Analysis of Bycatch Mitigation Methods for Sea Turtles Vulnerable to Swordfish and Tuna Longline Fisheries

Submitted by allykristan on

This summary study is a meta-analysis of experimental results from 41 stidues that investigated bycatch mitigation methods for sea turtles in tuna and swordfish longline fisheries. Circle hooks demonstrated effectiveness in reducing sea turtle bycatch; however, these hooks also usually use fish bait instead of hook bait, which may also be leading to the reduction in bycatch. Additionally, outcomes varied between the Atlantic, Pacific and Mediterannean which highlights the importance of regional data collection.

Read More

Evaluating the efficacy of various types of guarding nets in minimizing bycatch in a Mediterranean trammel net fishery

Submitted by allykristan on

This study examined the effectiveness of various sizes of guarding nets to reduce bycatch (specifically crustaceans) in cuttlefish trammel net fisheries. All nets did siginificantly reduce crustacean capture, notably spider crabs, but only the smaller mesh guarding net (20mm instead of 40mm) had no significant impact on target cuttlefish catch. However, guardnets may benefit fishers overall by avoiding later delays in disentangling bycatch and damage to gear. 

 

Read More

Evaluating the efficacy of various types of guarding nets in minimizing bycatch in a Mediterranean trammel net fishery

Submitted by allykristan on

This study examined the effectiveness of various sizes of guarding nets to reduce bycatch (specifically crustaceans) in cuttlefish trammel net fisheries. All nets did siginificantly reduce crustacean capture, notably spider crabs, but only the smaller mesh guarding net (20mm instead of 40mm) had no significant impact on target cuttlefish catch. However, guardnets may benefit fishers overall by avoiding later delays in disentangling bycatch and damage to gear. 

 

Read More

Evaluating the efficacy of various types of guarding nets in minimizing bycatch in a Mediterranean trammel net fishery

Submitted by allykristan on

This study examined the effectiveness of various sizes of guarding nets to reduce bycatch (specifically crustaceans) in cuttlefish trammel net fisheries. All nets did siginificantly reduce crustacean capture, notably spider crabs, but only the smaller mesh guarding net (20mm instead of 40mm) had no significant impact on target cuttlefish catch. However, guardnets may benefit fishers overall by avoiding later delays in disentangling bycatch and damage to gear. 

 

Read More

Evaluating the efficacy of various types of guarding nets in minimizing bycatch in a Mediterranean trammel net fishery

Submitted by allykristan on

This study examined the effectiveness of various sizes of guarding nets to reduce bycatch (specifically crustaceans) in cuttlefish trammel net fisheries. All nets did siginificantly reduce crustacean capture, notably spider crabs, but only the smaller mesh guarding net (20mm instead of 40mm) had no significant impact on target cuttlefish catch. However, guardnets may benefit fishers overall by avoiding later delays in disentangling bycatch and damage to gear. 

 

Read More

Evaluating the efficacy of various types of guarding nets in minimizing bycatch in a Mediterranean trammel net fishery

Submitted by allykristan on

This study examined the effectiveness of various sizes of guarding nets to reduce bycatch (specifically crustaceans) in cuttlefish trammel net fisheries. All nets did siginificantly reduce crustacean capture, notably spider crabs, but only the smaller mesh guarding net (20mm instead of 40mm) had no significant impact on target cuttlefish catch. However, guardnets may benefit fishers overall by avoiding later delays in disentangling bycatch and damage to gear. 

 

Read More

Effects of hook size on the catch variation, size selectivity, and bycatch of the bottom set longline fisheries targeting nemipterid fishes in the Philippines

Submitted by allykristan on

This study investigated 11 different longline hook sizes to increase catch of nemipterid fisheries  while reducing bycatch in the Phillippines. The largest hook demonstrated the lowest catch in count and weight, but did catch larger individual fish. Middle-sized hooks led to higher target catch, but also higher bycatch. The authors suggest that larger hooks would increase individual catch sizes and reduce bycatch, and that regulation of hook sizes is essential for for sustainable fishery management.

 

Read More

Selective characteristics of a shark-excluding grid device in a Mediterranean trawl

Submitted by allykristan on

This study tested the use of an excluder grid with 90mm bar spacing to reduce bycatch of blackmouth catshark (Galeus melastomus) in  demersal trawl fisheries in the Mediterannean. The 90mm excluder grid was not very efficient in reducing blackmouth catshark bycatch because only the larger individuals were excluded, and the target catches of greater forkbeard fish (Phycis blennoides) and (to a lesser extent) Norwegian lobster (N. norvegicus) was reduced.

Read More

Selective characteristics of a shark-excluding grid device in a Mediterranean trawl

Submitted by allykristan on

This study tested the use of an excluder grid with 90mm bar spacing to reduce bycatch of blackmouth catshark (Galeus melastomus) in  demersal trawl fisheries in the Mediterannean. The 90mm excluder grid was not very efficient in reducing blackmouth catshark bycatch because only the larger individuals were excluded, and the target catches of greater forkbeard fish (Phycis blennoides) and (to a lesser extent) Norwegian lobster (N. norvegicus) was reduced.

Read More

Selective characteristics of a shark-excluding grid device in a Mediterranean trawl

Submitted by allykristan on

This study tested the use of an excluder grid with 90mm bar spacing to reduce bycatch of blackmouth catshark (Galeus melastomus) in  demersal trawl fisheries in the Mediterannean. The 90mm excluder grid was not very efficient in reducing blackmouth catshark bycatch because only the larger individuals were excluded, and the target catches of greater forkbeard fish (Phycis blennoides) and (to a lesser extent) Norwegian lobster (N. norvegicus) was reduced.

Read More

Selective characteristics of a shark-excluding grid device in a Mediterranean trawl

Submitted by allykristan on

This study tested the use of an excluder grid with 90mm bar spacing to reduce bycatch of blackmouth catshark (Galeus melastomus) in  demersal trawl fisheries in the Mediterannean. The 90mm excluder grid was not very efficient in reducing blackmouth catshark bycatch because only the larger individuals were excluded, and the target catches of greater forkbeard fish (Phycis blennoides) and (to a lesser extent) Norwegian lobster (N. norvegicus) was reduced.

Read More

Selective characteristics of a shark-excluding grid device in a Mediterranean trawl

Submitted by allykristan on

This study tested the use of an excluder grid with 90mm bar spacing to reduce bycatch of blackmouth catshark (Galeus melastomus) in  demersal trawl fisheries in the Mediterannean. The 90mm excluder grid was not very efficient in reducing blackmouth catshark bycatch because only the larger individuals were excluded, and the target catches of greater forkbeard fish (Phycis blennoides) and (to a lesser extent) Norwegian lobster (N. norvegicus) was reduced.

Read More

Performance of sorting grids on catching elasmobranchs in a multispecies Mediterranean bottom trawl fishery

Submitted by allykristan on

This study investigated the use of two new elasmobranch bycatch reducing devices in a Mediterranean multispecies bottom trawl fishery- the shark excluder device (SED) and a flexible grid (Flexgrid). The SED was effective in reducing elasmobranch bycatch and did not impact mantis shrimp (Squilla mantis) target catch, but did reduce catch for some large bony fish species. The results from the Flexgrid were limited due to small sample size, but there was no impact on catch of main target species although a shark was incidentally caught.

Read More

Performance of sorting grids on catching elasmobranchs in a multispecies Mediterranean bottom trawl fishery

Submitted by allykristan on

This study investigated the use of two new elasmobranch bycatch reducing devices in a Mediterranean multispecies bottom trawl fishery- the shark excluder device (SED) and a flexible grid (Flexgrid). The SED was effective in reducing elasmobranch bycatch and did not impact mantis shrimp (Squilla mantis) target catch, but did reduce catch for some large bony fish species. The results from the Flexgrid were limited due to small sample size, but there was no impact on catch of main target species although a shark was incidentally caught.

Read More