| discontinuous ammonia excretion and glutamine storage in littoral oniscidea (crustacea: isopoda): testing tidal and circadian models. | a key evolutionary development facilitating land colonization in terrestrial isopods (isopoda: oniscidea) is the intermittent liberation of waste nitrogen as volatile ammonia. intermittent ammonia release exploits glutamine (gln) as an intermediary nitrogen store. here, we explore the relationship between temporal patterns of ammonia release and gln accumulation in three littoral oniscideans from southern california. results are interpreted in terms of water availability, habitat, activity patte ... | 2013 | 22836297 |