Results 151 to 160 of about 754 (197)

A Gillnet Fishery Considered as an Experiment in Artificial Selection

Journal of the Fisheries Research Board of Canada, 1977
Temporal patterns of change in growth, condition, and mean age of samples of lake whitefish (Coregonus clupeaformis) taken from Lesser Slave Lake, Alberta, during 1941–75 are described. Growth rate and condition have declined, while mean age has increased. Gillnet fisheries are highly selective of large, heavy, fast-growing individuals, and we suggest
Paul Handford, Graham Bell, Tom Reimchen
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Novel Tools to Reduce Seabird Bycatch in Coastal Gillnet Fisheries

Conservation Biology, 1999
Abstract: We examined several strategies to reduce seabird bycatch, primarily of Common Murres ( Uria aalge ) and Rhinoceros Auklets ( Cerorhinca monocerata ), in a coastal salmon drift gillnet fishery in Puget Sound, Washington, U.S.
E.F. Melvin, J.K. Parrish, L.L. Conquest
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A Study on Karaduvar Trammel and Gillnets Fisheries

2020
Sustainable management requires not only structural analysis but also socio-structural analysis. Therefore, structural analysis and the socio-cultural structure of the fishery need to be found out for the sustainable management for small-scale fishery of trammel nets at Karaduvar Fishermen Harbour.
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The lobster fishery with gillnets in the Eastern Adriatic

Rapports et procès verbaux des réunions - Commission internationale pour lNULLexploration scientifique de la mer Méditerranée, 2001
Lobster fishery in the Eastern Adriatic should be performed with pots and lobster gillnets, but other gillnets and trammel nets are also used. Influence of gillnets, with inadequate mesh size, on lobster has been evaluated according to length frequency of caught lobsters, percentage of immature specimens, sex ratio and length-weight relationship ...
Pallaoro, Armin, Dulčić, Jakov, Jardas, Ivan, Cetinić, Perica, Soldo, Alen   +4 more
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Studies on Echolocation of Porpoises Taken in Salmon Gillnet Fisheries

1990
In the Bering Sea, marine mammals, particularly Dall’s porpoises, Phocoenoides dalli, get incidentally entangled in gillnets of the Japanese mothership salmon fishery. The maximum total number of Dall’s porpoises to be caught in a year was fixed by U.S. law.
Yoshimi Hatakeyama, Hideo Soeda
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Catch and bycatch in U.S. Southeast gillnet fisheries, 2016

2017
The Southeast Gillnet Observer Program has adapted to the changes of the Florida-Georgia shark gillnet fishery since the program began in 1993 (e.g. Carlson and Bethea 2007 and references therein, Mathers et al. 2015). There are currently about 500 total directed and incidental shark permits issued for the southeastern U.S.
Mathers, Alyssa N., Deacy, Bethany M., Carlson, John K.   +2 more
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Effect of baiting gillnets in the Canadian Greenland halibut fishery

Fisheries Management and Ecology, 2020
AbstractCatch rates were compared between gillnets with and without bait in the Greenland halibut Reinhardtius hippoglossoides (Walbaum) fishery off Baffin Island, Canada. Two different types of baiting techniques were compared: bait bags where squid were placed into 2‐mm mesh bags, and tied bait where squid were tied into meshes.
Shannon M. Bayse, Scott M. Grant
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Reducing seabird bycatch in longline, trawl and gillnet fisheries

Fish and Fisheries, 2007
AbstractWith an increasing number of seabird species, particularly albatross and petrels, becoming threatened, a reduction of fishery impacts on these species is essential for their future survival. Here, mitigation methods to reduce and avoid seabird bycatch are assessed in terms of their ability to reduce bycatch rates and their economic viability ...
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Bycatch in gillnet fisheries – An overlooked threat to waterbird populations

Biological Conservation, 2009
Bird mortality in fishing gear is a global conservation issue and it is recognised that bycatch in industrial longline and trawl fisheries threatens several seabird species. Little is known however about the effects of bycatch in small-scale gillnet fisheries on bird populations.
Ramūnas Žydelis, Jochen Bellebaum, Henrik Österblom, Markus Vetemaa, Bernd Schirmeister, Antra Stipniece, Mindaugas Dagys, Mennobart van Eerden, Stefan Garthe   +8 more
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The incidental catch of seabirds in gillnet fisheries: A global review

Biological Conservation, 2013
Based on bird feeding ecology we identified 148 seabird species as susceptible to bycatch in gillnets, of which 81 have been recorded caught. The highest densities of susceptible species occur in temperate and sub-polar regions of both hemispheres, with lower densities in tropical regions.
Ramūnas Žydelis, Cleo Small, Gemma French   +2 more
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