Results 181 to 190 of about 1,144 (208)

The escape of fish from Norwegian fish farms: Causes, risks and the influence of organisational aspects

Marine Policy, 2015
Abstract The escape of fish from fish farms is a problem for the Norwegian aquaculture industry. Following a decrease in structural equipment failures, human errors and human factors have been highlighted as one of the main challenges when it comes to preventing fish escape. This article identifies causes of previous accidents leading to fish escape,
Trine Thorvaldsen, Ingunn M. Holmen, Helene K. Moe   +2 more
openaire   +1 more source

ON THE WILLINGNESS-TO-PAY FOR RECREATIONAL FISHING—ESCAPED FARMED VERSUS WILD ATLANTIC SALMON

Aquaculture Economics & Management, 2011
This article explores to what extent escaped farmed salmon from fish farms affect the willingness-to-pay for recreational fishing of Atlantic salmon in Norwegian rivers. This is a first attempt to explore the economic consequences of escaped farmed species in terms of the anglers’ willingness-to-pay for fishing permits working through the relationship ...
Jon Olaf Olaussen, Yajie Liu
openaire   +1 more source

Concentrations of wild and escaped fishes immediately adjacent to fish farm cages

Aquaculture, 1990
Beach-seine netting was carried out adjacent to five cage farms (two freshwater, three marine) and at respective control sites, in Argyll, western Scotland. Cages held captive rainbow trout (Oncorhynchus mykiss, formerly Salmo gairdneri) and/or Atlantic salmon (Salmo salar) which were fed pelleted feed.
openaire   +1 more source

Dispersal of large farmed Atlantic salmon, Salmo salar, from simulated escapes at fish farms in Norway and Scotland

Fisheries Management and Ecology, 2010
Abstract  Individually tagged farmed Atlantic salmon, Salmo salar L., were released from fish farms in simulated escapes in Scotland (n = 678) and Norway (n = 597) to compare migratory behaviour and dispersal. Large fish (510–870 mm fork length) were released to simulate the escape of aquaculture growers. Fish were released in spring and all recaptures
L. P. HANSEN, A. F. YOUNGSON
openaire   +1 more source

When a Fish is a Fish: The Economic Impacts of Escaped Farmed Fish [PDF]

, 2011
The escape of cultured fish from a marine aquaculture facility is a type of biological invasion that may lead to a variety of potential ecological and economic effects on native fish. This paper develops a general invasive species impact model to capture explicitly both the ecological and economic effects of invasive species, especially escaped farmed ...
Yajie Liu, Jon Olaf Olaussen, Anders Skonhoft   +2 more
openaire  

Recapturing fish escapes from coastal farms in the western Mediterranean Sea: Insights for potential contingency plans

Ocean & Coastal Management, 2018
Abstract Escape incidents of farmed fish involve economic losses to fish farms, interactions with local fisheries and environmental impacts to coastal ecosystems. More attention should clearly be paid to preventive measures. It is also essential to develop and establish contingency plans in case of escapes, to mitigate potentially negative ...
P. Arechavala-Lopez, D. Izquierdo-Gomez, A. Forcada, D. Fernandez-Jover, K. Toledo-Guedes, C. Valle, P. Sanchez-Jerez   +6 more
openaire   +1 more source

Modeling population dynamics and small-scale fisheries yields of fish farming escapes in Mediterranean coastal areas

Ecological Modelling, 2016
Abstract Coastal ecosystems put up a number of impacts from human activities in the sea; the most recent is fish farming, interacting synergistically with the other impacts and with the natural structure and dynamics of the coastal ecosystem. In the Mediterranean Sea, the number of fish farms has increased dramatically from early ‘80s in coastal ...
David Izquierdo-Gomez, Just T. Bayle-Sempere, Francisco Arreguín-Sánchez, Pablo Sánchez-Jerez   +3 more
openaire   +1 more source

The use of trophic resources byArgyrosomus regius(Asso, 1801) escaped from Mediterranean offshore fish farms

Journal of Applied Ichthyology, 2014
This study has been partially funded by the project FATFISH from Ministerio de Economia y Competitividad (Spanish Government) (CTM2009-14362-CO2-01/2).
J. M. Valero-Rodriguez, K. Toledo-Guedes, P. Arechavala-Lopez, D. Izquierdo-Gomez, P. Sanchez-Jerez   +4 more
openaire   +1 more source

The fish farm of origin is assigned by the element profile of Atlantic salmon (Salmo salar L.) scales in a simulated escape event

Fisheries Research, 2018
Abstract The Norwegian aquaculture management authorities require that the sea farm of origin for escaped salmon can be identified. As a contribution to develop a reliable and feasible method for tracing escaped salmon to their sea cage of origin the proof-of-concept of the case-based red alert method ‘FarmSalmTrack’ is demonstrated through a ...
Belinda Flem, Tonje Fagertun Benden, Tor Erik Finne, Vidar Moen, Thor Mikkel Nordahl, Ketil Skår, Øystein Nordgulen, Arne Solli   +7 more
openaire   +1 more source

Post-vaccination intra-abdominal adhesions as a marker to identify Atlantic salmon, Salmo salar L., escaped from commercial fish farms

Aquaculture, 1997
Abstract Intraperitoneal vaccination of Atlantic salmon, Salmo salar L., against furunculosis using oil adjuvanted vaccines causes visible intra-abdominal markers of apparently permanent character. The feasibility of these side-effects for discrimination between fish from vaccinated and unvaccinated populations was evaluated in an open study using ...
R.A. Lund, P.J. Midtlyng, L.P. Hansen
openaire   +1 more source