.... REFERENCES Alves-Stanley C. D. , Worthy G. A. J. ( 2009 ). Carbon and nitrogen stable isotope turnover rates and diet-tissue discrimination in Florida manatees (Trichechus manatus latirostris) . J. Exp. Biol. 212 , 2349 - 2355 . Ames A. L. , Van Vleet E. S. , Sacketti W...

... from a diet of aquatic forage to terrestrial forage (lettuce). The mean half-life for 13 C turnover was 53 and 59 days for skin from manatees rescued from coastal and riverine regions,respectively. The mean half-life for 15 N turnover was 27 and 58 days, respectively. Because of these slow turnover...

...Kenneth C. Welch, Jr; Raul K. Suarez SUMMARY Hummingbirds obtain most of their dietary calories from floral nectar ingested during hovering flight. Despite the importance of dietary sugar to hummingbird metabolism, the turnover of newly ingested carbon in the pool of actively metabolized substrates...

... of Mozambique tilapia embryos and subjected to in vitro incubation. To evaluate the ion-transporting property of the yolk balls, we examined Cl – content and turnover in yolk balls incubated in freshwater and seawater for 48 h, and distribution patterns of three ion transporters,Na + /K + -ATPase,Na + /K + /2Cl...