Publication Date:
2016-10-07
Description:
The planktonic foraminifer Globigerinoides sacculifer (Brady) was maintained in the laboratory under different temperature (19.5-29.5°C) and salinity (33 and 36‰) regimes. The light and feeding conditions were adjusted to the open ocean environment. The light intensity and quality corresponded to a water depth of 10-30 m and the specimens were fed daily. Specimens were raised from a mean initial size of approximately 220-240 μm to the reproductive mean size ranging from 521 μm to 657 μm according to the different temperature and salinity regimes. The survival time decreased with increasing temperature relatively independent of salinity. The growth rate decreased with decreasing temperatures but significantly only at the lowermost temperature range. The general vitality increased with increasing salinity, partially indicated by more chamber formations of specimens of the 36‰ salinity group in comparison to those of the 33‰ salinity group. The different phenotypes of the final chamber and the different morphologies of G. sacculifer are discussed.
Type:
Article
,
PeerReviewed
Format:
text
DOI:
10.1016/0377-8398(87)90025-9
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