Effect of temperature on molt increment and intermolt period of a juvenile Australian fresh-water crayfish, Cherax destructor

Verhoef, G. D., Austin, C. M., Jones, P. L. and Stagnitti, F. 1998, Effect of temperature on molt increment and intermolt period of a juvenile Australian fresh-water crayfish, Cherax destructor, Journal of Crustacean Biology, vol. 18, no. 4, pp. 673-679, doi: 10.2307/1549142.

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Title Effect of temperature on molt increment and intermolt period of a juvenile Australian fresh-water crayfish, Cherax destructor
Author(s) Verhoef, G. D.
Austin, C. M.ORCID iD for Austin, C. M. orcid.org/0000-0003-1848-6267
Jones, P. L.ORCID iD for Jones, P. L. orcid.org/0000-0002-5028-5775
Stagnitti, F.
Journal name Journal of Crustacean Biology
Volume number 18
Issue number 4
Start page 673
End page 679
Total pages 7
Publisher Oxford University Press (OUP)
Place of publication Oxford, Eng.
Publication date 1998-10-01
ISSN 0278-0372
Summary The effect of 3 temperatures (22, 25, and 28°C) on molt increment and intermolt period in juvenile C. destructor (the yabby) was investigated under laboratory conditions. Newly independent juveniles were grown individually in 1-1 polyethylene containers for 6 molts from molt stages 3―9. Both the intermolt period and molt increment decreased with increasing temperature. The mean intermolt periods were 6.7, 5.5, and 5.0 days and mean molt increments were 102, 98, and 93% at 22, 25, and 28°C, respectively. Regression models derived by combining molt increment and intermolt period data indicated that overall growth increased with increasing temperature. Pairwise comparisons of regression coefficients indicated that the growth rate of juvenile C. destructor at the two higher temperatures (25 and 28°C) did not differ, but was significantly reduced at 22°C. Thus, a shorter intermolt period, in spite of a reduced molt increment, is responsible for superior growth of juveniles of this species at elevated temperatures.
Language eng
DOI 10.2307/1549142
Indigenous content off
Field of Research 0602 Ecology
0603 Evolutionary Biology
0608 Zoology
HERDC Research category CN.1 Other journal article
Copyright notice ©1998, Koninklijke Brill NV, Leiden
Persistent URL http://hdl.handle.net/10536/DRO/DU:30128334

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