Inertial mass in the balance body of  Pomacea Diffusa . Experiment on the biosatellite “Bion-11”

G. I. Gorgiladze; Горгиладзе Г. И.

doi:10.31857/S0235009223030058

Inertial mass in the balance body of Pomacea Diffusa. Experiment on the biosatellite “Bion-11”

Authors: Gorgiladze G.I.¹
Affiliations:
1. Institute of Biomedical Problems RAS
Issue: Vol 37, No 3 (2023)
Pages: 258-268
Section: СЛУХОВАЯ И ВЕСТИБУЛЯРНАЯ СИСТЕМЫ
URL: https://journals.rcsi.science/0235-0092/article/view/138234
DOI: https://doi.org/10.31857/S0235009223030058
EDN: https://elibrary.ru/ZVGJKR
ID: 138234

Cite item

Full Text

Open Access
Restricted Access

Access granted
Restricted Access

Subscription Access

Abstract

The inertial mass in the balance organ-statocyst of Pomacea diffusa was studied from the moment of hatching from eggs until the end of the life cycle, as well as the effects of weightlessness on the inertial mass during a 14-day orbital flight on the biosatellite “Bion-11”. As the snails grew older, the diameter of the statocyst increased from 150 μm to 650 μm, and the inertial mass contained in it increased from 11–13 statoconia to 700 statoconia. The internal structure of the statoconia had a layered structure with a nucleus in its central region. The main mineral element that gives statoconia heaviness is calcium carbonate, presented in the form of aragonite crystals. A 14-day exposure in weightlessness led to noticeable changes in the morphometric pattern of the inertial mass in the statocyst of flight snails in comparison with the control snails of synchronous tracking. In most of the statoconia, the form factor, length, and width indicators increased, which could indicate the stimulating effect of weightlessness on the inertial mass in the balance organ of Pomacea diffusa.

Keywords

snail, statocyst, statoconia, weightlessness, biosatellite Bion-11

About the authors

G. I. Gorgiladze

Institute of Biomedical Problems RAS

Author for correspondence.
Email: gio119193@mail.ru
Russia, 123007, Moscow, Khoroshevskoe shosse, 76a

References

Gorgiladze G.I. Stimuliruyushcheye vliyaniye nevesomosti na rost statokoniy (eksperimenty na avtomaticheskikh kosmicheskikh apparatakh “Foton” i “Resurs-F” i pilotiruyemom orbital’nom komplekse “Mir”) [The stimulating effect of weightlessness on the growth of statoconia (experiments on the automatic spacecraft “Photon” and “Resurs-F” and the manned orbital complex “Mir”)] Georgian Engineering News. 2001. № 4. P. 113–119 (in Russian).
Gorgiladze G.I. Strukturno-funktsional’nyye osobennosti statotsista ulitok Helix lucorum. Orbital’naya stantsiya “Mir” [Structural and functional features of the statocyst of Helix lucorum snails. Orbital station “Mir”]. Mediko-biologicheskiye eksperimenty [Medico-biological experiments] 2002. V. 2. P. 366–383 (in Russian).
Gorgiladze G.I. Рlastichnost' inertsial’noy massy v organe izmenyayetsya v izmenyayushchemsya grafonnom pole [plasticity of the inertial mass in the balance organ in a changing gravitational field. Sensornyye sistemy. [Sensory systems]. 2020. V. 34. № 4. P. 267–282 (in Russian).
Gorgiladze G.I., Nosovskiy A.M., Bukiya R.D. Statolit Pomatias rivulare. [Statolith Pomatias rivulare]. Sensornyye sistemy [Sensory systems]. 2013. V. 27. № 3. P. 216–223 (in Russian).
Gorgiladze G.I. Strukturno-funktsional’nyye osobennosti statotsista ulitok Helix lucorum. [Structural and functional features of the statocyst of snails Helix lucorum]. Orbital’naya stantsiya “Mir”. Mediko-biologicheskiye eksperimenty. [Orbital station “Mir”. Biomedical experiments]. Moscow. 2002. V. 2. P. 366–383 (in Russian).
Ghesquiere S. Apple snail. 2007. (Stijn Ghesquiere. http://www.applesnail.net).
Pedrozo H.A., Schwartz Z., Luther M. A mechanism of adaptation to hypergravity in the statocyst of Aplysia californica. Hear. Res. 1996. V. 102. № 1–2. P. 51–62.
Pedrozo H.A., Wiederhold M.L. Effects of hypergravity on statocyst development in embryonic Aplysia californica. Hear. Res. 1994. V. 79. P. 137–146.
Vinnikov Ya.A., Gazenko O.G., Titova L.K. Retseptor gravitatsii. [Gravity receptor]. Seriya “Problemy kosmicheskoy biologii”. [“Series Problems of Space Biology”]. V. XII. L. “Nauka”, 1971. 523 p. (in Russian).
Wiederhold M.L., Harrison J.L., Ortiz C.A. Enhanced production of the “test mass” in the statocyst of pond snails reared in microgravity. Proc. Fifteenth Space Utilization Res. Sympos. Tokyo. 1999. V. 15. P. 89–92.
Wiederhold M.L., Harrison J.L., Parker K.A., Nomura H. Otoliths developed in microgravity. J. Grav. Physiol. 2000. V. 7. № 2. P. 39–42.
Wiederold M.L., Pedrozo H.A., Harrison J.L. et al. Development of gravity-sensing organs in altered gravity conditions: opposite conclusions from an amphibian and a molluscan preparation. J. Grav. Physiol. 1997. V. 4. № 2. P. 51–54.