... is a means to prevent fouling nests with ammonia and in turn poisoning offspring; however, additional study is warranted. * Author for correspondence (e-mail: [email protected] ) 23 2 2004 © The Company of Biologists Limited 2004 2004 ureogenesis ureotely Opsanus beta...

... to its high ammonia tolerance. Comp. Biochem. Physiol . 91A , 499 –508. Iwata, K., Kajimura, M. and Sakamoto, T. ( 2000 ). Functional ureogenesis in the gobiid fish Mugilogobius abei . J. Exp. Biol . 203 , 3703 –3715. King, J. C., Abel, D. C. and DiBona, D. R. ( 1989 ). Effects...

...Patrick J. Walsh; C. Louise Milligan ABSTRACT In order to elucidate further the cues for, and the biochemical mechanisms of, the transition to ureogenesis in the gulf toadfish Opsanus beta , experiments on the effects of feeding (i.e. nitrogen loading) were carried out. Baseline nitrogen excretion...

... of ureogenesis in O. beta . * Author for correspondence. 24 10 1994 ©The Company of Biologists Limited 1994 ureogenesis carbamoyl phosphate synthetase glutamine synthetase Opsanus beta Opsanus tau Porichthys notatus enzyme compartmentation Although most fish species...

...Patrick J. Walsh; Bonnie C. Tucker; Todd E. Hopkins ABSTRACT In order to elucidate the cues for, and the biochemical mechanisms of, the transition to ureogenesis in the gulf toadfish Opsanus beta , experiments on the effects of confinement/crowding were carried out. Confinement of toadfish to small...

..., toadfish rapidly regulate acid–base status by manipulating blood [HCO 3 − ]. Several treatments affected nitrogen excretion. The initial stages of hypercapnia (1% CO 2 ) led to significant reductions in ureogenesis, and the later compensated stages (with elevated plasma [HCO 3 − ]) led to significant...

... a distribution pattern commensurate with its unique metabolic function in the liver of the ureogenic toadfish. Further, all subpopulations possessed detoxification capabilities as indicated by high levels of glutathione-S-transferase, a ‘phase II’ conjugation enzyme. hepatocytes toadfish ureogenesis...