Monday, 21 October 2013

Environmental Catastrophe along a Norwegian River

Its starting to look like an Environmental Catastrophe along a Norwegian River called the Vikedalselva. Reports on the ground are coming through that a major escape of farmed salmon has infiltrated the river in large numbers. Local fishermen along the Vikedalselva are reporting that the media are not covering the story and feel the issue is being totally ignored by the authorities. Salmon ladders along the river have been closed to purge developing fish...

GENETIC INTERACTION EXPLAINED

There has long been concern that escaped farmed salmon may harm the various wild fish populations through hybridisation and altering the gene pools of wild populations (Hansen et al. 1991).There are several problems that can arise in this connection. If the farmed salmon have different characteristics and adaptations from wild salmon populations, gene flow may cause the wild salmon populations to lose characteristics that are crucial in a natural environment, while they adopt more of the farmed salmon's characteristics.

On the other hand, if the escaped farmed salmon have less genetic variation than wild stocks, gene flow to the wild population will cause individual populations to lose variation (Tufto & Hindar). Variation is essential for two reasons (Hedrick, 2000), evaluated from both a short-term and a long-term perspective. A population that loses variation and thus becomes genetically uniform will be less resistant to disease and parasites. Or put another way: it is easier for a parasite to adapt to a population of genetically similar individuals (few polymorphic loci in the population and low heterozygosity) and where the individuals themselves have little variation (the individuals have few heterozygous loci).

Additionally, in theory some of the harmful, recessive alleles will increase in frequency and produce less viable individuals (inbreeding depression). Studies just out (Reed & Frankham, 2003) empirically show that there is a good connection between fitness and heterozygosity, population size and quantitative genetic variation. Heterozygosity explains about 20% of the variation in fitness. In the long term, a population with little polymorphism will not have as great an evolutionary potential as a population with a lot of genetic variation.

All escaped farmed fish will come from a small number of farmed populations, which will lead to different populations becoming more like one another. It has also been claimed that coadapted gene complexes may dissolve. The following is an attempt to clarify relevant concepts and summarise empirical studies.

Saturday, 12 October 2013

Salmon Labeling: "Responsibly Farmed" nothing short of a Lie

The labeling "Responsibly Farmed" on farmed salmon in Irish Supermarket Chains is a complete contradiction. Why you may ask? In the nutshell, science has proven the negative impacts Salmon Farms have on native species of juvenile sea trout and salmon. It is far from Responsible to place a salmon farm on any coastline in the direct migratory path of native species. Salmon farms have proven to be connected to the mass decline of sea trout and salmon in many river systems around the world. Lets not forget the famous sea trout collapse in Connemara after they placed salmon farms along the West Coast of Ireland back in the 80's.

And here we are in 2013 with major supermarkets chains trying to convince their unknowing customers that everything is ok since a label has been added to fancy packaging on farmed salmon with famous words like "Responsibly Farmed" or  "Organic". All to allay any fears or suspicions to the customer that anything is wrong. 

So the customer adds the salmon product to their basket and heads to checkout. The money from this bought farmed salmon then lines the pockets of the supermarkets and salmon farmers which is a multi billion euro industry.

The losers in this game are you the public, native fish species and local environment. Lets not forget the human health issue's associated with farmed salmon. The fish are artificially fed, dipped in chemicals and pesticides and grown in packed cages that hold up 250,000 salmon.


 


Thursday, 10 October 2013

Farmed Salmon being Sold as Organic Produce

Organic Trust Ireland - Members website listing

Algaran Teo - Organic Seaweed Products Manufacturer

Algaran Teo is an organic seaweed products manufacturer.

Ardgroom Shellfish Ltd

Ardgroom Shellfish grow organic rope mussels in Ardgroom Harbour, Beara Peninsula, Co Cork

Clarkes Salmon Smokery

The Clarke family in Ballina have been synonymous with wild Irish salmon since Jackie Clarke first set up business in Ballina in 1945. A family…

Connemara Seafoods Frozen Ltd

Ireland's leading cultivator and producer of fresh, frozen, pasteurised and organic seafood products.

De Brun Iasc Teo

Ted Browne and his wife Hannah Mae started this family business from a garage in the back garden of their home in 1984.

Good Fish Processing (Carrigaline) Ltd

The Good Fish Company is a family run specialist fish processor and retailer, committed to providing the Freshest Irish fish and seafood to its customers.…

Ireland West Seafare

Top quality fish for sale.

Kenmare Select

Kenmare Select is a leading exporter of Irish salmon smoked in the country of origin!

Ummera Smoked Products Ltd

About Ummera ..... For nearly forty years Ummera has built up an enviable reputation for producing some of the finest smoked salmon available.

Wrights of Howth

In 1893 the Wright family began smoking Irish Salmon. The craft has been passed down through the generations and little has changed. We still fillet…

Yawl Bay Seafoods Ltd

We are a second-generation family business taking our name from the nearby Youghal Bay (pronounced 'Yawl').