Morphologic and crystallographic studies of the otoliths of the reed‐fish Erpetoichthys calabaricus showed (1) aragonite statoliths with a serrated surface, and (2) two populations of statoconia: one of numerous discoid biconvex crystals of vaterite, the other of pseudohexagonal crystals of aragonite. We suggest that the presence of two calcium carbonate polymorphs in the statoacoustic organs of this archaic fish may have an evolutionary, as well as a systematic and functional significance. 1992 The Royal Swedish Academy of Sciences
Scanning electron microscopy and X-ray diffraction studies of the macular crystals in the Chondrostean fish Erpetoichthys calabaricus (Smith) / Marmo, F.; Ariani, A. P.; Balsamo, G.; Avallone, Bice. - In: ACTA ZOOLOGICA. - ISSN 0001-7272. - 73:4(1992), pp. 203-206. [10.1111/j.1463-6395.1992.tb01083.x]
Scanning electron microscopy and X-ray diffraction studies of the macular crystals in the Chondrostean fish Erpetoichthys calabaricus (Smith).
AVALLONE, BICE
1992
Abstract
Morphologic and crystallographic studies of the otoliths of the reed‐fish Erpetoichthys calabaricus showed (1) aragonite statoliths with a serrated surface, and (2) two populations of statoconia: one of numerous discoid biconvex crystals of vaterite, the other of pseudohexagonal crystals of aragonite. We suggest that the presence of two calcium carbonate polymorphs in the statoacoustic organs of this archaic fish may have an evolutionary, as well as a systematic and functional significance. 1992 The Royal Swedish Academy of Sciences| File | Dimensione | Formato | |
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