Results 51 to 60 of about 949 (184)

Pacific bluefin tuna (Thunnus orientalis) bycatch in the Atlantic Ocean

Journal of Fish Biology, EarlyView.
Abstract A large tuna was hooked by a Japanese longline fishery in the high seas near the Republic of Namibia. This fishing ground is mainly utilized for Thunnus albacares, Thunnus obesus and Thunnus alalunga by Japanese tuna longliners. Because the tuna was larger than the common size of these species, the specimen was sampled for genetic species ...
Yohei Tsukahara, Atsushi Tawa, Masashi Sekino, Kenji Nohara, Nobuaki Suzuki   +4 more
wiley   +1 more source

Analysis of the Swordfish Xiphias gladius Linnaeus, 1758 Catches by the Pelagic Longline Fleets in the Eastern Pacific Ocean

Journal of Marine Science and Engineering
During the last 50 years, the increase in the efforts of the longline fleet in the Eastern Pacific Ocean (EPO) resulted in an increase in the capture of the swordfish Xiphias gladius.
Luis Adán Félix-Salazar, Emigdio Marín-Enríquez, Eugenio Alberto Aragón-Noriega, Jorge Saul Ramirez-Perez   +3 more
doaj   +1 more source

Environmental Factors Determine Tuna Fishing Vessels’ Behavior in Tonga

Fishes, 2023
Comprehending the spatial distribution of human fishing endeavors holds significant importance in the context of monitoring fishery resources and implementing spatial management measures.
Siosaia Vaihola, Stuart Kininmonth
doaj   +1 more source

Estimating Patagonian toothfish (Dissostichus eleginoides) length at first maturity from their age, sex and temperature experience around South Georgia

Journal of Fish Biology, EarlyView.
Abstract Patagonian toothfish (Dissostichus eleginoides) are a long‐lived, slow‐growing deep‐sea species endemic to the Southern Hemisphere and the focus of longline fisheries managed to ensure sustainable exploitation. Managing the fisheries relies on accurate stock assessments that include pertinent biological and exploitation processes.
Jessica E. Marsh, Sarah R. Alewijnse, Stephen D. Gregory, Philip R. Hollyman, Marta Söffker   +4 more
wiley   +1 more source

Reducing seabird bycatch in the Hawaii longline tuna fishery [PDF]

Endangered Species Research, 2008
Mortality in longline fisheries represents a global threat to some species of pelagic seabirds. Regulations were adopted in 2001 to reduce seabird bycatch in the Hawaii longline tuna fishery. We used a Poisson generalized additive regression modeling approach to evaluate the change in seabird bycatch rates from the pre- to post-regulation period, and ...
Gilman, Eric, Kobayashi, Donald, Chaloupka, Milani   +2 more
openaire   +3 more sources

Spatial and temporal variations in seabird bycatch: Incidental bycatch in the Norwegian coastal gillnet-fishery.

PLoS ONE, 2019
The general decline of seabird populations worldwide raises large concerns. Although multiple factors are interacting to cause the observed trends, increased mortality from incidental bycatch in fisheries has proven to be important for many species ...
Kim Magnus Bærum, Tycho Anker-Nilssen, Signe Christensen-Dalsgaard, Kirstin Fangel, Tom Williams, Jon Helge Vølstad   +5 more
doaj   +1 more source

From Co-Operation to Coercion in Fisheries Management: The Effects of Military Intervention on the Nile Perch Fishery on Lake Victoria in Uganda

Fishes, 2023
In 2017, Uganda’s small-scale inland fisheries underwent a significant transformation, shifting from local co-management to state military enforcement owing to ineffective enforcement of regulations and declining exports.
Veronica Mpomwenda, Tumi Tómasson, Jón Geir Pétursson, Daði Mar Kristófersson   +3 more
doaj   +1 more source

Quantifying post‐release behaviour of a critically endangered elasmobranch over two capture events using high‐resolution archival tag data

Journal of Fish Biology, EarlyView.
Abstract During catch‐and‐release angling, highly resident species are susceptible to multiple recapture events. Biologging offers the opportunity to study post‐release behaviour in detail; however, most studies have focused on a single capture‐release event.
Danielle L. Orrell, Jamie Darby, Damien Haberlin, Alfonso Cohuo, Luke Harman, Thomas K. Doyle   +5 more
wiley   +1 more source

Slow sink rate in floated-demersal longline and implications for seabird bycatch risk.

PLoS ONE, 2022
Bycatch of birds in longline fisheries is a global conservation issue, with between 160,000-320,000 seabirds killed each year, primarily through being caught and drowned as they attempt to snatch baits off hooks as they are set.
Yann Rouxel, Rory Crawford, Juan Pablo Forti Buratti, Ian R Cleasby   +3 more
doaj   +1 more source

DNA barcoding reveals the presence of Whitson's grenadier, Macrourus whitsoni, in sub‐Antarctic waters of South Georgia, Southern Ocean

Journal of Fish Biology, EarlyView.
Abstract Macrourid species constitute the main bycatch in Southern Ocean toothfish longline fisheries. We report the first confirmed record of Whitson's grenadier, Macrourus whitsoni, in the South Georgia toothfish fishery. Mitochondrial cox1 DNA barcoding confirmed its presence in bycatch samples collected around South Georgia and the northern South ...
M. L. Romero Martínez, J. Abreu, J. P. Queirós, J. C. Xavier, P. R. Hollyman, E. Fitzcharles, M. A. Collins   +6 more
wiley   +1 more source