PMID: 8951450Dec 1, 1996Paper

A mechanism of adaptation to hypergravity in the statocyst of Aplysia californica

Hearing Research
H A PedrozoMichael L Wiederhold

Abstract

The gravity-sensing organ of Aplysia californica consists of bilaterally paired statocysts containing statoconia, which are granules composed of calcium carbonate crystals in an organic matrix. In early embryonic development, Aplysia contain a single granule called a statolith, and as the animal matures, statoconia production takes place. The objective of this study was to determine the effect of hypergravity on statoconia production and homeostasis and explore a possible physiologic mechanism for regulating this process. Embryonic Aplysia were exposed to normogravity or 3 x g or 5.7 x g and each day samples were analyzed for changes in statocyst, statolith, and body dimensions until they hatched. In addition, early metamorphosed Aplysia (developmental stages 7-10) were exposed to hypergravity (2 x g) for 3 weeks, and statoconia number and statocyst and statoconia volumes were determined. We also determined the effects of hypergravity on statoconia production and homeostasis in statocysts isolated from developmental stage 10 Aplysia. Since prior studies demonstrated that urease was important in the regulation of statocyst pH and statoconia formation, we also evaluated the effect of hypergravity on urease activity. The results s...Continue Reading

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Citations

Apr 27, 2013·Die Naturwissenschaften·Rodrigo Ligabue-BraunCélia Regina Carlini
Nov 30, 2010·Bulletin of Experimental Biology and Medicine·G I GorgiladzeG P Satdykova
Jun 25, 2013·World Journal of Microbiology & Biotechnology·Navdeep Kaur DhamiAbhijit Mukherjee
Jan 17, 2003·Advances in Space Research : the Official Journal of the Committee on Space Research (COSPAR)·H Rahmann, R H Anken
Sep 7, 2001·Advances in Space Research : the Official Journal of the Committee on Space Research (COSPAR)·H Rahmann, R H Anken
Sep 7, 2001·Advances in Space Research : the Official Journal of the Committee on Space Research (COSPAR)·R H AnkenH Rahmann
Apr 6, 2002·Proceedings. Biological Sciences·Efrat MerozMicha Ilan
Apr 1, 2006·Doklady Biological Sciences : Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections·G I GorgiladzeN G Sokolov
Jan 12, 2013·Current Protein & Peptide Science·Iwona KoniecznaWieslaw Kaca
Nov 17, 2001·Annals of the New York Academy of Sciences·R ThalmannI Thalmann
May 20, 2021·Journal of the Association for Research in Otolaryngology : JARO·Richard Boyle, Joseph Varelas

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