๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Excretion of nitrogen by the Alligator embryo

โœ Scribed by Clark, Hugh ;Sisken, Betty ;Shannon, John E.

Publisher
Wiley (John Wiley & Sons)
Year
1957
Tongue
English
Weight
262 KB
Volume
50
Category
Article
ISSN
0095-9898

No coin nor oath required. For personal study only.

โœฆ Synopsis

Embryos of the black snake were found (Clark, '53) to excrete 60% of their nitrogenous waste as urea, 20% as uric acid and 10% as ammonia. Since this performance was in sharp contrast with the expectations as summarized by Needham ('31, '50) the investigation of nitrogen partition in the excreta of another reptilian group was undertaken.

Eggs of Alligator mississippiensis were shipped to our laboratory via air express from Avery Island, Louisiana.2 'This study was supported by Grant G-3827(c) from the U.S. Public Health 'We are indebted to Mr. E. M. Simmons of the E. A. McIlhenny Estates, Service of the National Institutes of Health. Avery Island, Louisiana for several shipments of eggs.

๐Ÿ“œ SIMILAR VOLUMES

A reconsideration of nitrogen excretion
A reconsideration of nitrogen excretion by the chick embryo
โœ Clark, Hugh ;Fischer, Daniel ๐Ÿ“‚ Article ๐Ÿ“… 1957 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 660 KB

## T W O FIGURES Previous observations on the nitrogenous excreta of the chick, summarized by Needham ('31) showed a peak of ammonia production at 4 days, of urea at 9 days and of uric acid at 11 days. Total nitrogen excreted was reported as 11.124 mg. of which uric acid constituted 91.35%, urea 7

Ammonia nitrogen and inorganic phosphoru
Ammonia nitrogen and inorganic phosphorus excretion by the planktonic rotifers
โœ J. Ejsmont-Karabin ๐Ÿ“‚ Article ๐Ÿ“… 1983 ๐Ÿ› Springer ๐ŸŒ English โš– 384 KB

Two series of experiments were carried out to determine the relation of the rate of phosphorus and nitrogen excretion by the planktonic rotifers to ambient temperature and individual body weights of these animals . The following formulas describing this relation were obtained : EP=0 .0154 W-1 .27 eo

Ammonium excretion by a mutant of the ni
Ammonium excretion by a mutant of the nitrogen-fixing cyanobacterium Anabaena siamensis
โœ Selwin P. Thomas; Arieh Zaritsky; Sammy Boussiba ๐Ÿ“‚ Article ๐Ÿ“… 1991 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 508 KB

Anabaena siamensis isolated from rice fields in "lhailand is a fast growing cyanobacterium with a high nitrogen-fixing activity. Mutant strains resistant to the L-glutamate analogue, t.-methionine sulfoximine (MSX) were isolated by ethyl methanesulfonate mutagenesis. A stable mutant named A. siamens