Abstract:
:Knowledge of the mechanisms by which fish excrete their metabolic nitrogenous waste and insights into nitrogen cycling in aquaculture systems is of utmost importance to improve the sustainable commercial production of fish. In fish, most nitrogenous waste is excreted via the gills as ammonia, a potentially toxic nitrogenous compound. In this study; activity assays, physiological experiments, molecular analysis and microscopy were used to show that the gills of fish harbor a unique combination of hitherto overlooked nitrogen-cycle microorganisms that can theoretically detoxify excreted ammonia by converting it into inert dinitrogen gas. By doing so, these microorganisms may benefit from the ammonia supply by the host and prevent the build-up of this compound to toxic concentrations. This novel relationship between vertebrates and microorganisms may shed new light on nitrogen handling by ammonotelic fish species.
journal_name
Environ Microbiol Repjournal_title
Environmental microbiology reportsauthors
van Kessel MAHJ,Mesman RJ,Arshad A,Metz JR,Spanings FAT,van Dalen SCM,van Niftrik L,Flik G,Wendelaar Bonga SE,Jetten MSM,Klaren PHM,Op den Camp HJMdoi
10.1111/1758-2229.12407subject
Has Abstractpub_date
2016-10-01 00:00:00pages
590-594issue
5issn
1758-2229journal_volume
8pub_type
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