Results 201 to 210 of about 19,176 (219)

Estimating Abundance from Longline Catches

Journal of the Fisheries Research Board of Canada, 1960
The various factors that enter into the catch of fish by a baited longline are combined into equations that permit using the information afforded by the catches to compute linear estimates of abundance, providing that all rates can be estimated reasonably accurately, and assuming they are linear.
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Putting Longline Bycatch of Sea Turtles into Perspective

Conservation Biology, 2006
Abstract:  Although some sea turtle populations are showing encouraging signs of recovery, others continue to decline. Reversing population declines requires an understanding of the primary factor(s) that underlie this persistent demographic trend.
Rebecca L, Lewison, Larry B, Crowder
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Shark interactions in pelagic longline fisheries

Marine Policy, 2008
Substantial ecological, economic and social problems result from shark interactions in pelagic longline fisheries. Improved understanding of industry attitudes and practices towards shark interactions assists with managing these problems. Information on fisher knowledge and new strategies for shark avoidance may benefit sharks and fishers.
Eric Gilman, Shelley Clarke, Nigel Brothers, Joanna Alfaro Shigueto, John Mandelman, Jeff Mangel, Samantha Petersen, PIOVANO, SUSANNA, Nicola Thomson, Paul Dalzell, Miguel Donoso, Meidad Goren, Tim Werner   +12 more
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Unequal sex ratios in longline catches

Journal of the Marine Biological Association of the United Kingdom, 2001
There is sometimes a significant bias in the sex ratio of fish caught by longline. Usually, more females than males are caught. The possible reasons for unequal sex ratios in longline catches are listed and discussed. One sex could be more common in the area where the fishery takes place because there really is an unequal sex ratio in the population or
P. Wirtz, T. Morato
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Albatross and longlining—Managing seabird bycatch

Marine Policy, 1997
Abstract Seabirds can be accidentally injured or killed during certain types of fishing. The fishing method currently under most scrutiny for its impact on seabird populations is demersal and pelagic longlining. The main species of concern at present are albatross. This paper outlines current mitigation measures, both gear and operational changes, to
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Hematological indicators of stress in longline-captured sharks

Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2012
For many shark species, little information exists about the stress response to capture and release in commercial longline fisheries. Recent studies have used hematological profiling to assess the secondary stress response, but little is known about how, and to what degree, these indicators vary interspecifically. Moreover, there is little understanding
Heather, Marshall, Lyndsay, Field, Achankeng, Afiadata, Chugey, Sepulveda, Gregory, Skomal, Diego, Bernal   +5 more
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Applications of the longline simulator (LLSIM) using US pelagic longline logbook data and Atlantic blue marlin

Fisheries Research, 2019
Abstract Spatiotemporal variability in fishing patterns and species distributions from ocean climatology confound analysis of pelagic longline CPUE. A generalized computer program, LLSIM, was developed to simulate such data to test methods used to quantify abundance trends.
Francesca C. Forrestal, C. Phillip Goodyear, Michael Schirripa   +2 more
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Integrated weight longlines with paired streamer lines – Best practice to prevent seabird bycatch in demersal longline fisheries

Biological Conservation, 2008
To evaluate a new technology – integrated weight longlines (IW) – as a viable seabird mitigation technology for demersal longline fisheries, we compared three experimental mitigation treatments, IW line alone, IW with paired streamer lines (IWPS) and unweighted longlines (UW) with PS (UWPS), to a control of no deterrent (UW alone). Trials took place on
Kimberly S. Dietrich, Edward F. Melvin, Loveday Conquest   +2 more
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Longlining field studies on MV Sjovaer

1986
The development of a new fishing technology with a longliner which has a submerged buoy and an acoustic release system attached to its end is described. The field tests of the system were conducted aboard the MV Sjovaer, off the coast of Newfoundland.
Chowdrey, M., Augustyniak, M.
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Cutting the Longline to Extinction: New Sea Turtle Campaign Takes Aim at Industrial Longline Fishing and Mercury-Poisoned Seafood

NEW SOLUTIONS: A Journal of Environmental and Occupational Health Policy, 2004
Chanting “Get on the right track … stop killing the leatherback!,” a festive protest of people of many ages dressed in colorful turtle costumes wound its way along the busy streets of San Francisco's Fishermen's Wharf. The action last October marked the launching of the Bay Area-based Sea Turtle Restoration Project's Save the Leatherback ( www ...
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