Journalartikel

Jahr der Veröffentlichung: 2004

Seiten: 930-937

Zeitschrift: Journal of Experimental Zoology

Bandnummer: 301A

Heftnummer: 12

ISSN: 0022-104X

DOI Link: https://doi.org/10.1002/jez.a.116

Verlag: Wiley: 12 months

Abstract: 
Observations on the growth rate of aquarium maintained Nautilus pompilius in different developmental stages, i.e. juveniles (shell length about 8.75 cm), late juveniles ( approximate to 10 cm), and early adolescent ( approximate to 13.5 cm), indicate that this species is fully grown at an age of 7.3-8 years. The age calculations are based on two different computations: (1) the measurement of the increase of the shell length per day and (2) the formation of new septa in time intervals of 150 +/- 5 days, as demonstrated by X-ray analyses. After N. pompilius hatches, its shell grows about 139 mm to reach full growth and approximately 28 septa are formed. With an increase of the shell length of 0.052 mm per day, it takes about 2,673 days (7.3 years) to reach maturity. Provided that the process of chamber formation follows an exponential function, these computations result in 2,925 days (8 years) to reach full maturity. Supposing that N. pompilius may live for several years after onset of maturity like Nautilus belauensis, the total life span for this species may exceed 11-12 years. (C) 2004 Wiley-Liss, Inc.

Harvard-Zitierstil: Westermann, B., Beck-Schildwächter, I., Beuerlein, K., Kaleta, E. and Schipp, R. (2004) Shell growth and chamber formation of aquarium-reared Nautilus pompilius (Mollusca, Cephalopoda) by X-ray analysis, Journal of Experimental Zoology, 301A(12), pp. 930-937. https://doi.org/10.1002/jez.a.116

APA-Zitierstil: Westermann, B., Beck-Schildwächter, I., Beuerlein, K., Kaleta, E., & Schipp, R. (2004). Shell growth and chamber formation of aquarium-reared Nautilus pompilius (Mollusca, Cephalopoda) by X-ray analysis. Journal of Experimental Zoology. 301A(12), 930-937. https://doi.org/10.1002/jez.a.116