Talk:Aquaculture of salmonids

A fact from Aquaculture of salmonids appeared on Wikipedia's Main Page in the Did you know column on 16 May 2009 (check views). The text of the entry was as follows:

Did you know... that farmed salmon can escape from their sea cage and interbreed with wild salmon?

A record of the entry may be seen at Wikipedia:Recent additions/2009/May.

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Pollution and toxins

I have concerns about section 3.2

"Salmon farms are typically sited in pristine marine ecosystems which they then pollute. A farm with 200,000 salmon discharges more faecal waste than a city of 60,000 people. This waste is discharged directly into the surrounding aquatic environment, untreated, often containing antibiotics and pesticides."

The first sentence is a subjective statement without supporting citations.

It unsupported because is isn't true. 200,000 salmon at various ages would be fed 2 to 4,000 kg of feed per day (depending upon the size distribution and temperature) and 60,000 people would be on a starvation diet at < 100 gm/day or about 500 kcal. Deweaver (talk) 21:30, 14 November 2010 (UTC)[reply]

In the second sentence, how was this calculated? It cites a factsheet from the Seafood Choice Alliance which gave no details on where they got this info or how it was calculated? Using the term fecal waste and then directly comparing it to human waste without context is misleading. Salmonids do not produce fecal coliform bacteria (Spanggaard et al. 2000) as do mammals and birds. In this respect salmonid faeces does not pose the same health or environmental risks. Comparison to terrestrial loading (e.g. cities, farms) on the basis of individual nutrients such as nitrogen is a more objective approach. This is addressed in documents produced from the World Wildlife Fund's Salmon Aquaculture Dialogue which is referred to further in the article. --ReidGK (talk) 01:27, 11 January 2010 (UTC)[reply]

Good to see you about again. That was a good job you did on Integrated Multi-Trophic Aquaculture. The first sentence, above, was indeed a subjective statement, which I entered based on my observation of salmon farming applications in New Zealand. If in your experience, the statement is atypical, please feel free to just delete it. That's a good point on fecal coliform bacteria, and yes, the source is shaky. Do not hesitate to make changes to the article you think are appropriate. --Epipelagic (talk) 02:16, 11 January 2010 (UTC)[reply]

Labeling requirements

I just bought some farmed salmon from canada with the phrase "Fresh atlantic salmon FLT color" on the label. What does that mean? Are there requirements in the US or canada regarding this? 68.115.35.110 (talk) 22:32, 23 February 2012 (UTC)[reply]

With the name change

Now that the article name has changed to include salmonids instead of salmon exclusively, there should be some mention of the chars Salvelinus, other Salmos, (Brown trout) and whitefish Coregonus species that are grown commercially. --Mike Cline (talk) 01:19, 24 February 2014 (UTC)[reply]

They could be mentioned in passing, but they do not seem to be significant producers. Lake whitefish is perhaps the most significant producer, but that amounts to only 12,000 tonnes a year and would not register on the graph. --Epipelagic (talk) 03:39, 24 February 2014 (UTC)[reply]

Coho salmon

The section on Coho salmon, especially about its life cycle, is inconsistent with both the cited source and the article. Most likely the information in this section applies to Pink Salmon not Coho. --Mike Cline (talk) 15:03, 15 January 2015 (UTC)[reply]

Dead links

This page has a lot of Dead Links.--75 * 22:24, 19 January 2015 (UTC)[reply]

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Wild versus farmed: Pollution and contaminants

Are there more recent studies about health risks & benefits of both kinds of salmon? Those cited in the section are old. — Preceding unsigned comment added by 189.141.248.61 (talk) 02:42, 29 April 2020 (UTC)[reply]

Egg production

So, it might be good to dedicate some words to the 'commodity chain' of for example trout farming. Non-organic farmers themselves typically buy the fertilized eggs from large egg producers. Since the non-organic farmers (in Europe at least) prefer all-female populations, the egg producers use hormone/testosterone feed to stimulate semen production in female fish. That way the fertilized eggs will have XX-chromosomes, always hatching female fish, which is exactly what the non-organic farmers want. Moreover, the fertilized eggs are heated and pressurized to make the offspring infertile, which aids their growth. 2001:1C02:1990:A900:CD7D:4E60:B01:ADEF (talk) 08:34, 10 April 2024 (UTC)[reply]