Unanswered Forum Topics

Pearls are not just for girls: Plastic spheres do not interfere with target catches in a set net fishery

Study Type
Field study in the wild
Location
Western Baltic Sea
Target catch
Atlantic cod (Gadus morhua)
Effect on bycatch species
Prevented bycatch
Effect on target catch
No effect, catch rates did not siginficanly differ from catch rates with regular gillnets
Reduction technique
Fishing Gear

Pearls are not just for girls: Plastic spheres do not interfere with target catches in a set net fishery

Study Type
Field study in the wild
Location
Western Baltic Sea
Target catch
Atlantic cod (Gadus morhua)
Effect on bycatch species
Prevented bycatch
Effect on target catch
No effect, catch rates did not siginficanly differ from catch rates with regular gillnets
Reduction technique
Fishing Gear

Effectiveness of mitigation measures to reduce interactions between commercial fishing gear and whales

Study Type
Field study in the wild
Location
Western Australia
Target catch
western rock lobster, octopus
Effect on bycatch species
modifications to rope girth and color may be effective; acoustic pingers showed no effect
Effect on target catch
varies by modification from "negative" to "no impact" (Table 8)

Effectiveness of mitigation measures to reduce interactions between commercial fishing gear and whales

Study Type
Field study in the wild
Location
Western Australia
Target catch
western rock lobster, octopus
Effect on bycatch species
modifications to rope girth and color may be effective; acoustic pingers showed no effect
Effect on target catch
varies by modification from "negative" to "no impact" (Table 8)

Effectiveness of mitigation measures to reduce interactions between commercial fishing gear and whales

Study Type
Field study in the wild
Location
Western Australia
Target catch
western rock lobster, octopus
Effect on bycatch species
modifications to rope girth and color may be effective; acoustic pingers showed no effect
Effect on target catch
varies by modification from "negative" to "no impact" (Table 8)

Effectiveness of mitigation measures to reduce interactions between commercial fishing gear and whales

Submitted by allykristan on

Surveys and data sources were used to investigate overlap of migrating humpback whales and both the Western Rock Lobster Fisheries and Developmental Octopus Fisheries off the coast of Western Australia, and to investigate gear modifications to mitigate entanglement. Modifications were made to float rigs (rope type, rope length, and number of floats used), but effectiveness was not assessed within this project. Preliminary results showed that whales are more likely to become entangled in ropes that are thinner, mainlines that are yellow or orange, and orange header rigs.

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Effectiveness of mitigation measures to reduce interactions between commercial fishing gear and whales

Submitted by allykristan on

Surveys and data sources were used to investigate overlap of migrating humpback whales and both the Western Rock Lobster Fisheries and Developmental Octopus Fisheries off the coast of Western Australia, and to investigate gear modifications to mitigate entanglement. Modifications were made to float rigs (rope type, rope length, and number of floats used), but effectiveness was not assessed within this project. Preliminary results showed that whales are more likely to become entangled in ropes that are thinner, mainlines that are yellow or orange, and orange header rigs.

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Killer whale (Orcinus orca) interactions with blue-eye trevalla (Hyperoglyphe antarctica) longline fisheries

Study Type
Field study in the wild
Location
Amsterdam/St. Paul Islands (Indian Ocean), southeastern Australia
Target catch
blue-eye trevalla
Effect on bycatch species
temporal and latitudinal variations; decreased fishing effort decreases orca interactions
Effect on target catch
n/a
Bycatch species
Fishing Gear

Killer whale (Orcinus orca) interactions with blue-eye trevalla (Hyperoglyphe antarctica) longline fisheries

Study Type
Field study in the wild
Location
Amsterdam/St. Paul Islands (Indian Ocean), southeastern Australia
Target catch
blue-eye trevalla
Effect on bycatch species
temporal and latitudinal variations; decreased fishing effort decreases orca interactions
Effect on target catch
n/a
Bycatch species
Fishing Gear

Killer whale (Orcinus orca) interactions with blue-eye trevalla (Hyperoglyphe antarctica) longline fisheries

Submitted by allykristan on

This study assessed the frequency and spatio-temporal variation of previously unreported killer whale interactions/depredation with blue-eye trevalla (Hyperoglyphe antarctica) longline fisheries in two geographically isolated populations: one off Amsterdam/St. Paul Islands and another in south-eastern Australia. This two fisheries differ in fishing technique (vertical vs. demersal longlines) and effort.

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Killer whale (Orcinus orca) interactions with blue-eye trevalla (Hyperoglyphe antarctica) longline fisheries

Submitted by allykristan on

This study assessed the frequency and spatio-temporal variation of previously unreported killer whale interactions/depredation with blue-eye trevalla (Hyperoglyphe antarctica) longline fisheries in two geographically isolated populations: one off Amsterdam/St. Paul Islands and another in south-eastern Australia. This two fisheries differ in fishing technique (vertical vs. demersal longlines) and effort.

Read More