GM salmon for the table.

Ready to eat: the first GM fish for the dinner table [see information below the news story, on submitting comments to FDA]

The US decision after 17-year battle over fast-growing salmon could pave way for same step in Britain and other countries. A GM salmon which grows twice as fast as ordinary fish could become the first genetically-modified animal in the world to be declared officially safe to eat, after America’s powerful food-safety watchdog ruled it posed no major health or environmental risks.

The US Food and Drug Administration (FDA) said it could not find any valid scientific reasons to ban the production of GM Atlantic salmon engineered with extra genes from two other fish species – a decision that could soon lead to its commercial production. The verdict clears one of the last remaining hurdles for GM salmon to be lawfully sold and eaten in the US and will put pressure on salmon producers in Britain and Europe to follow suit. Successive chief scientists to the UK Government, as well as science institutions such as the Royal Society, have endorsed the concept of GM technology as a tool for increasing food production in the 21st Century, but consumer opposition has so far blocked the approval of GM food for the dinner table.

Several government bodies including the advisory committees on the release of GM organisms and on novel foods and processes would have to review the technology before it was approved in the UK. Supporters of the technology believe the GM salmon will make it not only easier and cheaper to produce farmed salmon, but that it could also be better for the environment because they can be grown on land-based fish farms. Sir John Beddington, the current chief scientist, warned two years ago of a “perfect storm” of growing human numbers, climate change and food shortages, where it would be “very hard to see how it would be remotely sensible to justify not using new technologies such as GM”.

GM opponents, however, argue that the introduction of the fast-growing salmon creates risks for both human health and the environment. They also argue that the salmon will be the start of concerted efforts to create other GM animals for human consumption, which could raise serious questions about animal welfare. The FDA had already indicated the salmon was fit for human consumption. But in a draft environmental assessment written in May and published on Friday following inquiries by The Independent, it goes further by declaring that the production of the GM fish is unlikely to have any detrimental impact on the wider environment. Opponents of the GM salmon – which some have dubbed the “Frankenfish” – have argued it could escape into the wild, interbreed with wild fish and undermine the genetics of the endangered Atlantic salmon, the “king of fishes” grown on fish farms in the UK.

However, the company behind the GM AquAdvantage salmon emphasised that the genetically engineered fish will be only be grown as sterile females and kept in secure containers on land. In its draft assessment prepared as part of a New Animal Drug Application (NADA), the FDA agrees that the possibility of GM salmon escaping from fish farms is extremely remote and that interbreeding with wild salmon is equally unlikely. The possibility of the GM salmon escaping into rivers and the sea from land-based fish farms is “extremely remote”, the FDA said. “[The] FDA has made the preliminary determination it is reasonable to believe that approval of the AquAdvantage salmon NADA will not have any significant impacts on the quality of the human environment of the United States (including populations of endangered Atlantic salmon) when produced and grown under the conditions of use for the proposed action,” it concludes.

Anti-GM groups last night raised concerns about the report. Peter Riley, of the pressure group GM Freeze, said: “The sterility system does not guarantee that there will be no escapes into the wild and some of them will be fully fertile. It’s also debatable whether anyone wants to buy GM salmon, even in the US, if it is properly labelled.”

The FDA also states the two other US Government agencies responsible for overseeing laws on endangered species – the National Marine Fisheries Service and the US Fish and Wildlife Service – have agreed with the FDA’s assessment that there will be “no effect” on wild Atlantic salmon or its habitat. In its report, the FDA warns that if final approval is not given by the US Government, other countries may still develop GM Atlantic salmon.

The research into the GM salmon goes back to the late 1980s and it has gone through 17 years of bureaucratic wrangling over whether it should be approved for human consumption. The FDA indicated in 2010 that it would declare the GM salmon safe to eat but the issue was then kicked into the Washington long grass, which some have put down to nervousness on the part of the White House in the run-up to this year’s Presidential election … … .

See the source (http://tinyurl.com/coj94cj) for the full story and a chronological history of some GE products.

[Information on FDA’s draft environmental assessment of GE salmon (available at http://tinyurl.com/buass5j), that now paves the way for full approval of AquAdvantage Salmon, is open for public comment (until February 25, 2013). ADS-Mod.]
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Did your fishes make it through Perth’s recent heat wave? Need a chiller?

Well, the hot weather is not over yet. If history repeats itself, we will still be looking at heat waves in Feb/March this year. It might be worthwhile to invest in a chiller unit, particularly if you keep temperate seahorses, Murray cods and axolotls.

As part of continuing to provide good information and service to his valued clients, Dr Loh has been able to negotiate a great deal for you.
Visit Boronia Aquarium’s online store and receive a 10% discount on purchases with this code: VET2345.

Check out the chiller units at – http://www.boroniaaquarium.com.au/index.php?cPath=5074_5640_5641&osCsid=4316b669b3980dc8c670db27c389d4c4

Prawn farming not only brings economic benefits, but societal health benefits too.

Read more about the prawn farming project in Senegal that has the added benefit of reducing human cases of schistosomiasis – http://aquatichealth.net/node/68357

Are households willing to pay for improved fish welfare for farmed salmon?

Interesting article below.

 

Aquaculture
Volume 375, Number 3 (January 2013)
Households’ willingness-to-pay for improved fish welfare in breeding programs for farmed Atlantic salmon
Authors: K.M. Grimsrud, H.M. Nielsen, S. Navrud, I. Olesen
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Source: Aquaculture, Volume 375, Number 3 (January 2013)
Page Numbers: 19 – 27
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Abstract: There is a growing concern about the welfare of farmed fish. Current breeding programs typically focus on profitability through emphasizing fast growth of the fish. This research, however, finds that a representative sample of Norwegian households are willing to pay an increased tax for farmed Atlantic salmon that is selected for traits related to fish welfare. In an Internet survey, a random and representative sample of Norwegian households were asked to choose among breeding programs for farmed Atlantic salmon that differed with regards to costs and the following four traits related to fish welfare; frequency of deformities (Deform), frequencies of injuries (Injur), resistance to Salmon Lice (Lepeophtheirus salmonis) (Lice) and resistance to diseases (Health). The survey participants were given six different choice sets, and in each they chose one of three alternative salmon breeding programs. Two of the alternative breeding programs would give improvements in at least one of the trait attributes and would result in an earmarked tax per household per year. The third alternative was the status quo option, i.e. a zero earmarked tax with focus only on growth enhancing traits and profitability in breeding programs. Based on the estimation results of random parameter logit models mean willingness to pay (WTP) was estimated for all households and for the subsample of households purchasing farmed salmon. The average WTP was higher for the subsample that purchases farmed salmon compared to the full sample. For households that purchase farmed salmon, the average WTP in terms of an earmarked tax for all attributes were significant and highest for Lice (1034NOK/yr), followed by Health (749NOK/yr). The WTP for Deform (282NOK/yr) and Injur (256NOK) were nearly the same. For the full sample of household, the average WTP was significantly different from zero at the 5% level only for Health (613.1NOK/yr) and Lice (951.2NOK/yr). This study provides evidence that there is a high WTP among all Norwegian households to improve the welfare of farmed Atlantic salmon through increased resistance to diseases and Salmon Lice, which may imply less use of medicines and chemicals in the production process. Only households that purchase farmed salmon are willing to pay an earmarked tax to reduce deformities and injuries.
Citation: K.M. Grimsrud, H.M. Nielsen, S. Navrud, I. Olesen . Households’ willingness-to-pay for improved fish welfare in breeding programs for farmed Atlantic salmon. Aquaculture, Volume 375, Number 3 (January 2013), pp. 19-27, <http://ejournals.ebsco.com/direct.asp?ArticleID=4CE5BB8137FC41DBA892&gt;
URL: http://ejournals.ebsco.com/direct.asp?ArticleID=4CE5BB8137FC41DBA892

Are you keeping your fish feed outside?

Storing fish feed near the fish is convenient, but in the hot summer the feed can go off.

I’ve had a case where salmon feed was not stored in an insulated shed, and one hot summer in Tasmania (yes shockingly, Tasmania can get rather warm!) their fish started dying in numbers. Down the microscope, I saw hepatic necrosis and some saponification of adipocytes. Deaths abated once new feed was brought in to replace the ones that went off.

So this summer, make sure you keep your fish feed stored properly.

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Biological control of mosquitoes using Gambusias to curb Dengue.

Gambusias (mosquito fish) are being bred and distributed widely in an effort to curb Dengue. This fish was chosen due to its robustness (they are able to tolerate water temperatures from close to freezing to 34 degrees Celsius) and for their ability to create self-sustaining populations where they are introduced. Let’s hope they’re not causing ‘habitat pollution’ as these fish eat more than just mosquito larvae as was found out in Australia.

Read more here – http://aquatichealth.net/node/68046

The 24th International Conference of the World Association for the Advancement of Veterinary Parasitology will be in Perth, Australia.

Conference Details

25th – 29th August 2013
Perth, Western Australia, Australia

Website: http://www.waavp2013perth.com/
Contact person: Kylie Skinner

WAAVP 2013 attracts parasitologists globally to discuss the latest advances in research relevant to veterinary parasitology. Embracing a broad field of applied parasitology it provides opportunity to look to the future celebrating our 50th Birthday!

Organized by: Australian Society of Parasitology
Deadline for abstracts/proposals: 31st March 2013

Check the event website for more details – http://www.waavp2013perth.com/

Also, there will be a satellite Fish Diseases Workshop before the event.

Where and when? Murdoch University Perth, Thursday 22 August – Saturday 24 August 2013.
This 3-day workshop will be held at the teaching multi-header microscope suites at the Murdoch University School of Veterinary and Life Sciences. The workshop is designed with the fish health diagnostician as well as researcher/ would-be-researcher in mind. At the end of the workshop, participants will have developed some level of confidence in carrying out sound disease investigations in finfish, appreciate normal finfish histology as well as be able to recognize significant and emerging diseases of important cultured finfish species in Asia and Australia.
The workshop will cover both freshwater ornamental fish and marine food fish. There will be opportunity to spend some time on histological materials that participants are encouraged to bring along to the workshop. Participants will receive a set of DVDs of selected virtual microscopy slides reviewed during the workshop, which will serve as invaluable resource reference materials. There will be ample opportunity to seek the opinions of presenters as well as other participants during the workshop.
The workshop program will be announced as soon as it has been finalized. Do register your interest with the conference organizers.
For more information, please contact Dr Susan Gibson-Kueh at S.Kueh@murdoch.edu.au