Results 221 to 230 of about 25,551 (258)

Post-release survival of silky sharks (Carcharhinus falciformis) following capture by Mexican flag longline fishing vessels in the northeastern Pacific Ocean

, 2021
Mexican flag longline fishing vessels operating in tropical waters of the northeastern Pacific Ocean commonly target and land silky sharks (Carcharhinus falciformis).
K. Schaefer, Daniel W. Fuller, J. L. Castillo-Geniz, Carlos Javier Godínez-Padilla, Michael Dreyfus, A. Aires-da-Silva   +5 more
semanticscholar   +1 more source

The effect of light attractor color in pelagic longline fisheries

, 2021
Improving the selectivity of the fishing gear is one of the most promising methods to mitigate deleterious impacts of longline fisheries upon bycatch species.
A. Afonso, B. Mourato, H. Hazin, F. Hazin   +3 more
semanticscholar   +1 more source

Effect of design configuration on structural response of longline aquaculture in waves

, 2021
The submerged deep-water longline aquaculture facility is known as a typical, flexible multi-degree-of-freedom offshore structure. Effects of layout concepts of the dropper weight, the upper buoy pattern and the incident wave angle on longline ...
Feng Dejun, A. Meng, Ping Wang, Yanbo Yao, F. Gui   +4 more
semanticscholar   +1 more source

Towards mitigation of seabird bycatch: Large-scale effectiveness of night setting and Tori lines across multiple pelagic longline fleets

Biological Conservation, 2020
Bycatch in pelagic longline fleets remains a considerable source of mortality for threatened seabirds. Despite efforts to implement mitigation measures, the effectiveness of their application across multiple fleets and wide spatio-temporal scales remains
S. Jiménez, A. Domingo, H. Winker, D. Parker, D. Gianuca, T. Neves, R. Coelho, S. Kerwath   +7 more
semanticscholar   +1 more source

Acoustics and photo-identification provide new insights on killer whale presence and movements when interacting with longline fisheries in South East Australia

, 2021
Removal of target catch from longlines by marine mammals, known as depredation, is a global issue creating animal welfare, socioeconomic and management concerns.
Matthew C. Cieslak, P. Tixier, G. Richard, M. Hindell, J. Arnould, M. Lea   +5 more
semanticscholar   +1 more source

Dynamic Simulation of Pelagic Longline Retrieval

Journal of Ocean University of China, 2019
To improve fishing gear efficiency, it is important to understand the interactions among sea current, fishing vessel, line hauler, and catches during pelagic longline gear retrieval. In this study, fishing gear configuration parameters, operational parameters, and 3D ocean current data were collected from Indian Ocean.
Liming Song, Yukun Qi, Jie Li, Zhibin Shen, Xinfeng Zhang, Xi Shen   +5 more
openaire   +1 more source

Dynamics of a mussel longline system

Aquacultural Engineering, 2003
Abstract The equations of the three dimensional motion of a submerged mussel longline system are formulated using Kane's formalism. The line is modelled using lumped masses and tension-only springs including structural damping. The mussel culture is modelled as lumped masses attached to the main line.
Raman-Nair, W., Colbourne, D. B.
openaire   +1 more source

Observing post-release mortality for dusky sharks, Carcharhinus obscurus, captured in the U.S. pelagic longline fishery

, 2020
The latest stock assessment for the dusky shark, Carcharhinus obscurus, in the western North Atlantic Ocean indicates the population is overfished and experiencing overfishing.
J. Sulikowski, Walter J. Golet, E. Hoffmayer, W. Driggers, L. Natanson, Amy E. Carlson, Brett B. Sweezey   +6 more
semanticscholar   +1 more source

Azorean demersal longline survey abundance estimates: Procedures and variability

, 2020
Survey data from the Azores is used for fisheries stock assessments under the ICES Working Group on the Biology and Assessment of Deep-sea Fisheries Resources (WGDEEP) covering deep open ocean areas.
M. Pinho, Wendell M. Medeiros-Leal, M. Sigler, R. Santos, Ana Novoa‐Pabon, G. Menezes, H. Silva   +6 more
semanticscholar   +1 more source

How fast do demersal longlines sink?

Fisheries Research, 2003
Abstract Longlines that sink fast reduce the time available to seabirds to attack baited hooks and are important in efforts to minimise seabird by-catch in longline fisheries. We measured sink rates in still seawater of longlines commonly used in the world’s demersal fisheries. Lines with integrated weight (lead cores) sank two to three times faster (
Graham Robertson, Egil Moe, Roy Haugen, Barbara Wienecke   +3 more
openaire   +1 more source