Over the last 50 years, the management needs of the Norwegian aquaculture industry have become increasingly complex. The stakeholders in the management vary diversely from environmental agencies and NGOs, to local and national governmental bodies, to those operating the farms themselves. Consequently, the establishment of the Traffic Light System as a management tool has been a long and challenging ...

Snow crab (Chionoecetes opilio) is a small crab of a high commercial value, with delicious and nutricious meat. In the global market, it is a popular marine product. As a rule, snow crab is sold frozen in limb sections or as separate meat. The product price is difficult to define as it depends on a price for the exported snow crab, on the currency rate, meat quality and economic situations in importing ...

Approximately two decades ago, snow crab (Chionoecetes opilio) were discovered in the Barents Sea. The areas in which they have come to establish themselves, in many instances, overlaps with areas trawled by the commercial groundfish fleet, consequently, leading to interactions between snow crab and bottom gear. Snow crabs, which after settling to the bottom go through a series of molts in order to ...

Reservoir fisheries management must be based on an understanding that they are complex and dynamic ecosystem. This study describes fisheries activities status in the Tri An reservoir. The main objective is to determine an efficient exploitation level of fisheries resources affected by the stocking program. The Verhulst-Schaefer model (logistic growth) was applied and the classic model modified ...

Despite the considerable importance of artisanal fishing in Kainji Lake lower basin, knowledge about gear and craft being used is deficient and outdated. Little is also known as to why fishermen adopted the diverse fishing gear and craft they use in the Lake, as well as the relationship of these input factors to the socio-economic status of the fishermen and ecology of the lake. To address these ...

Aquaculture in Ghana has been in existence for over 50years. However, it has been less productive despite its high potential for commercial and other scales of production. The Volta Lake presents a huge available resource for the success of cage aquaculture in the country. The cage system of production was introduced in 2001 according to Kasam (2014). This system of aquaculture production even ...

This study explored possible factors linked to the instability of the stock biomass of Namibian horse mackerel Trachurus trachurus capensis (Castelnau 1861) in recent years (2001-2007). The major focus of the analysis was the contrast of stock traits in years of low and high stock biomass, as perceived from research cruises performed annually between February and March. Stock traits analyzed included: ...