Abstract
The effects of temperature, salinity and oxygen tension on the rates of oxygen consumption of three different strains of Artemia nauplii have been studied. When acclimated to a salinity of 30‰, nauplii from each of the three strains were able to maintain approximately constant rates of oxygen consumption over a wide range of oxygen tension. The ability to maintain respiratory independence during hypoxia was reduced, however, with an increase in either temperature or salinity. Nauplii of two of the strains (parthenogenetic diploid and tetraploid) showed a progressive increase in the rate of oxygen consumption with increasing temperature up to 35°C. Nauplii of the bisexual strain appeared to be less tolerant of exposure to temperatures >30°C, since at higher temperatures their oxygen consumption declined slightly. The differences between the nauplii of the different strains in their physiological responses to changing environmental conditions appear to correlate well with their seasonal occurrence in the field.
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Communicated by T. Mauchline, Oban
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Varó, I., Taylor, A.C. & Amat, F. Comparative study of the effects of temperature, salinity and oxygen tension on the rates of oxygen consumption of nauplii of different strains of Artemia . Marine Biology 117, 623–628 (1993). https://doi.org/10.1007/BF00349774
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DOI: https://doi.org/10.1007/BF00349774