Sieve Plates and Habitat Adaptation in the Foraminifer Planulina ornata
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2003-01
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University of Hawai'i Press
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Abstract
Planulina ornata (d'Orbigny), a coarsely perforate species of foraminifera
having a low trochospiral test, was recovered attached to phosphatic
hardgrounds from the lower oxygen-minimum zone off Peru. Above the base of
individual pores are calcified, perforate sieve plates, the largest so far described.
Structure of the pores suggests a possible association with mitochondria and
respiratory function. These large pores may facilitate extraction of the severely
limited amount of oxygen from the ambient bottom waters at that locale.
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Resig JM, Glenn CR. 2003. Sieve plates and habitat adaptation in the foraminifer Planulina ornata. Pac Sci 57(1): 103-110.
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