alexa Morphological changes in the gills of Lophiosilurusalexandri exposed to unionized ammonia.


Toxicology: Open Access

Author(s): E L Cardoso, H ChiariniGarcia, R M A Ferreira, C R Poli

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The average lethal concentration of un-ionized ammonia (48-h LC50NH3) has been determined by the static assay for larvae (0.48 mg l−1) and alevins (0.92 mg l−1) of ‘pacamã’Lophiosilurus alexandri. Studies by light and scanning electron microscopes at the greatest concentration of NH3 (0.99 mg l−1 for larvae and 1.5 mg l−1 for alevins) have shown that the changes in the cells and branchial tissue were more intense in the alevins.

This article was published in Journal of Fish Biology and referenced in Toxicology: Open Access

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