Distribution of the brine shrimps Parartemia zietziana Sayce and Artemia salina (L.) along a salinity and oxygen gradient in a South Australian saltfield |
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| Authors: | B. D. MITCHELL M. C. GEDDES |
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| Affiliation: | Department of Zoology, University of Adelaide, Australia |
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| Abstract: | SUMMARY. The seasonal distribution of Parartemia zietziana and Artemia salina was studied in a South Australian saltfield. P. zietziana occurred alone at salinities from 112 to 214%‰ and A. salina occurred alone at salinities above 285%‰; the two species overlapped in the range 214 to 285%‰. Respiration experiments indicated that A. salina had a lower 'critical' oxygen concentration than P. zietziana , apparently due to the presence of haemoglobin in A. salina . This may result in an adaptive advantage at high salinity and low dissolved oxygen. |
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