Blue petrel

Another experiment used cod liver oil, crude krill extract, and the krill odor components trimethylamine and pyrazine, with phenylethanol (rose odor) as control. Several procellariiform species were attracted to krill extract. The krill odor components attracted giant petrels, cape petrels, blue petrels, Antarctic petrels, Kerguelen petrels, and black-browed albatrosses. Cape petrels were more attracted to trimethylamine than to pyrazine and cod liver oil hut blue petrels responded most to cod liver oil (Nevitt, 1999). 

Blue eyed cormorant, Phalocrocorax atriceps-, muscle South giant petrel, Macronectes giganteus muscle Redhead, Aythya americana, Texas and Louisiana liver winter 1987-88... 

Bonadonna, F., Villafane, M., Bajzak, C., and Jouventin, P. (2004). Recognition of burrow s olfactoiy signature in blue petrels, Halobaena caerulea an efficient discrimination mechanism in the dark. Animal Behaviour67,893. 

Antarctica, February-March 1989 Southern giant petrel, Macronectes giganteusr, muscle Blue-eyed cormorant, Phalacrocorax atriceps muscle Adelie penguin, Pygoscelis adeliae Liver Muscle... 

More simultaneous measurements of NH3 in the ocean and in the atmosphere are needed to reduce the considerable uncertainties of the ocean/atmosphere flux estimates. The ongoing acidification of the ocean will shift the NH3/NH4 equilibrium to NH. On the one hand this might have implication for the atmospheric distribution of NH3, since the uptake capacity of the ocean will be increased with unknown consequences for chemistry of the atmosphere (e.g. the aerosol formation) over the ocean. On the other hand this might have severe implications for the nitrification rates in seawater because they are influenced by the pH. When the pH drops from 8 to 7, nitrification rates can be reduced by 50% (Huesemann et al., 2002). (One explanation for this is that the ammonia monooxygenase enzyme uses rather NH3 than NH4 as substrate.) Most recently it was suggested that atmospheric NH3 serves as a foraging cue for seabirds such as the blue petrel (Nevitt ei a/., 2006) is an excretion product of... 

Bonadonna, F., Spaggiari, J., and Weimerskirch, H., 2001, Could osmotaxis explain the ability of blue petrels to return to their burrows at night J. Exp. Biol. 204 1485-1489... 

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