نتایج جستجو برای: fish catch

تعداد نتایج: 115655  

2008
Richard G. Dudley Richard Dudley

Fishery management complexity conspires to defeat seemingly obvious solutions to overfishing. Management may not adequately include decisions of fishers, management, and politicians. A new, simple, but acceptably complex fish population model is meshed with both fishery activities and management decision making. The population component is based on the common single stock biomass dynamic model....

2014
Michael R. Heath Robin M. Cook Angus I. Cameron David J. Morris Douglas C. Speirs

Discarding by fisheries is perceived as contrary to responsible harvesting. Legislation seeking to end the practice is being introduced in many jurisdictions. However, discarded fish are food for a range of scavenging species; so, ending discarding may have ecological consequences. Here we investigate the sensitivity of ecological effects to discarding policies using an ecosystem model of the N...

ژورنال: بوم شناسی آبزیان 2013
Daliri , Moslem , Kia-alvandi , Saeid , Paighambari , Seyed Yousef ,

The beach seine fishery is performed regularly along Iranian coasts of the Caspian Sea. The aim of the present study was to determinate of the species composition of beach seine fishery in Golestan Province. Due to the extent of fisheries cooperatives in the study area 7 cooperatives was selected, namely Magtymguly, Niyaz Abad, Yashar, Shayan Aydin, Golestan, Charqly, Norgolestan and Nemune. S...

Ghosh, Dipankar , Kumar Biswas, Jayanta,

Background: Oxbow lakes are abundant in indigenous fishes, but they are subject to unsustainable fishing practices, potential overexploitation, and indiscriminate use of fine-meshed fishing gear. To quantify the catch per unit effort (CPUE) and impact of fishing gears on fish abundance, a survey was carried out in an oxbow lake in eastern India. Methods: The gear-wise CPUE for fish caught in...

2018
Lydia C. L. Teh Daniel Pauly

Amidst overexploited fisheries and further climate related declines projected in tropical fisheries, marine dependent small-scale fishers in Southeast Asia face an uncertain future. Yet, small-scale fishers are seldom explicitly considered in regional fisheries management and their contribution to national fish supply tends to be greatly under-estimated compared to industrial fisheries. Lack of...

2015
Anna Birkenbach David Kaczan Martin D. Smith

Catch shares appear to lower fishing costs by eliminating redundant capacity. Theory suggests that catch shares may also alter within-season behavior and generate revenue benefits through improved market timing, higher product quality, and changes in the fresh/frozen product mix. Do catch shares alter within-season behavior to end the race to fish? Do catch shares cause ex vessel prices to incr...

Journal: :international journal of advanced biological and biomedical research 2013
javid imanpour namin taravat molayemraftar mina rajabpour sanam heidary

length weight relationships of vimba vimba persa were studied. for this purpose 174 fish samples were collected by gill nets, beach seine and purse seine from march through june 2008 at two guilan fisheries catch stations of guilan located in anzali- kiyashahr regions. samples were immediately transferred to the laboratory of fish biology at university of guilan for further analyses. length, we...

2017
Ruth H Thurstan Edward Game John M Pandolfi

Despite threats to human wellbeing from ecological degradation, public engagement with this issue remains at low levels. However, studies have shown that crafting messages to resonate with people's personal experiences can enhance engagement. Recreational fishing is one of the principal ways in which people interact with aquatic environments, but long-term data from this perspective are conside...

2013
Catherine E. LePrevost Kathleen M. Gray Mercedes Hernández-Pelletier Brennan D. Bouma Consuelo Arellano W. Gregory Cope

Fish consumption has established benefits, including the promotion of cardiovascular health and pre- and neonatal brain and eye development, but local freshwater fish may be a source of contaminants that are especially harmful to fetuses and young children, such as the neurotoxic and developmentally toxic methylmercury and polychlorinated biphenyls. Fish consumption advisories may be issued by ...

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