Huysman, Steve

Van Meulebroek, Lieven

Vanhaecke, Lynn

English

Vanhaecke, L.

Huysman, S.

Van Meulebroek, L.

Open Marine Archive

SETAC Brussels Vanhaecke, L. "Emerging contaminants and toxins in aquaculture: how modern ..."
[39118]
ID: 96
SESSION: The role of ecotoxicology in fisheries science and aquaculture (I) [marc berntssen] 
TITLE: Emerging contaminants and toxins in aquaculture: how modern analytical tools may aid to ensure
food and environmental safety
AUTHORS: Lynn Vanhaecke, Ghent University / Veterinary Public Health and Food Safety - Laboratory of
Chemical Analysis; Steve Huysman, Ghent University; Lieven Van Meulebroek , Ghent University /
Department of Veterinary Public Health and Food Safety
ABSTRACT: As a result of governmental incentives and technological developments, aquaculture has become
a well-established and strongly growing segment in food production. To date, about 45% of worldwide fish
supply is provided through aquaculture, but a continuously increasing trend may still be noted. In this regard, a
deepened knowledge on adequate feed formulations, growth conditions, and disease management is of outmost
importance. However, the intensified aquaculture process requires a high input of diverse resources, which may
strongly impact the environment as well as food safety. Indeed, various chemical agents such as antibiotics,
herbicides and algaecides are used, aiming at the promotion of the cultivated species by eliminating their major
competitors. Although this strongly advances production, some adverse side-effects may be noted. For
example, the administration of antibiotics, used to kill or inhibit the growth of bacteria, may also affect
nontargeted species and induce antibiotic resistance. These antibiotics are generally present in the feed
formulations, together with diverse other substances such as pharmaceuticals, anaesthetics, vitamins, and
pigments, which may all accumulate in the environment. The same is true for herbicides and algaecides,
frequently applied to control aquatic weeds, algal blooms and fouling organisms. As such, a variety of
biological active and possibly toxic chemicals are introduced in the environment and may accumulate in edible
species. Hereby, lipophilic emerging contaminants tend to bio-accumulate, whereas hydrophilic compounds are
mostly converted to metabolites or derivatives, which may exert even more toxic effects than the parent
compounds. In this context, the increasing prevalence of toxin producing species (algae blooms) is also
assigned substantial significance as the produced biotoxins may strongly affect seafood growth rate, death rate
and food safety. \nWithin this context, large-scale research is necessary to acquire valuable insights on 1) the
presence of contaminants in our marine environment and aquaculture production systems, 2) the uptake,
bioaccumulation and metabolisation of bioactive substances by (edible) species, and 3) the health risks
associated with these substances and their derivatives. Hereby, new tools for monitoring (e.g. passive samplers)
as well as high-end analytical instruments (e.g. high-resolution mass spectrometry for profiling and
fingerprinting) are becoming indispensable to acquire a correct view on the impact and importance of
contaminants. During this keynote, the urge of contaminant analysis and adequate monitoring will be
demonstrated using practical examples. From this, current shortcomings and future needs for a better food
safety warranting and sustainable production will be proposed.
Auto-generated by SETAC Meeting Management System May 8th 2017 9:50:10 AM


Emerging contaminants and toxins in aquaculture : how modern analytical tools may aid to ensure food and environmental safety

Ghent University Academic Bibliography

SETAC Brussels Vanhaecke, L. "Emerging contaminants and toxins in aquaculture: how modern ..."[39118]ID: 96SESSION: The role of ecotoxicology in fisheries science and aquaculture (I) [marc berntssen] TITLE: Emerging contaminants and toxins in aquaculture: how modern analytical tools may aid to ensurefood and environmental safetyAUTHORS: Lynn Vanhaecke, Ghent University / Veterinary Public Health and Food Safety - Laboratory ofChemical Analysis; Steve Huysman, Ghent University; Lieven Van Meulebroek , Ghent University /Department of Veterinary Public Health and Food SafetyABSTRACT: As a result of governmental incentives and technological developments, aquaculture has becomea well-established and strongly growing segment in food production. To date, about 45% of worldwide fishsupply is provided through aquaculture, but a continuously increasing trend may still be noted. In this regard, adeepened knowledge on adequate feed formulations, growth conditions, and disease management is of outmostimportance. However, the intensified aquaculture process requires a high input of diverse resources, which maystrongly impact the environment as well as food safety. Indeed, various chemical agents such as antibiotics,herbicides and algaecides are used, aiming at the promotion of the cultivated species by eliminating their majorcompetitors. Although this strongly advances production, some adverse side-effects may be noted. Forexample, the administration of antibiotics, used to kill or inhibit the growth of bacteria, may also affectnontargeted species and induce antibiotic resistance. These antibiotics are generally present in the feedformulations, together with diverse other substances such as pharmaceuticals, anaesthetics, vitamins, andpigments, which may all accumulate in the environment. The same is true for herbicides and algaecides,frequently applied to control aquatic weeds, algal blooms and fouling organisms. As such, a variety ofbiological active and possibly toxic chemicals are introduced in the environment and may accumulate in ediblespecies. Hereby, lipophilic emerging contaminants tend to bio-accumulate, whereas hydrophilic compounds aremostly converted to metabolites or derivatives, which may exert even more toxic effects than the parentcompounds. In this context, the increasing prevalence of toxin producing species (algae blooms) is alsoassigned substantial significance as the produced biotoxins may strongly affect seafood growth rate, death rateand food safety. \nWithin this context, large-scale research is necessary to acquire valuable insights on 1) thepresence of contaminants in our marine environment and aquaculture production systems, 2) the uptake,bioaccumulation and metabolisation of bioactive substances by (edible) species, and 3) the health risksassociated with these substances and their derivatives. Hereby, new tools for monitoring (e.g. passive samplers)as well as high-end analytical instruments (e.g. high-resolution mass spectrometry for profiling andfingerprinting) are becoming indispensable to acquire a correct view on the impact and importance ofcontaminants. During this keynote, the urge of contaminant analysis and adequate monitoring will bedemonstrated using practical examples. From this, current shortcomings and future needs for a better foodsafety warranting and sustainable production will be proposed.Auto-generated by SETAC Meeting Management System May 8th 2017 9:50:10 AM

https://biblio.ugent.be/publication/8519833/file/8519834

Emerging contaminants and toxins in aquaculture : how modern analytical tools may aid to ensure food and environmental safety

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