You are not currently logged in.
Access your personal account or get JSTOR access through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Survival Following Exposure to Subzero Temperatures and Respiration in Cold Acclimatized Larvae of Enallagma boreale (Odonata:Zygoptera)
Walter G. Duffy and Charles R. Liston
Freshwater Invertebrate Biology
Vol. 4, No. 1 (Feb., 1985), pp. 1-7
Stable URL: http://www.jstor.org/stable/1467193
Page Count: 7
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
Larvae of Enallagma boreale survived exposure to -1.0° C (53%) and -4.0° C (10%). Ability to survive was not related to rate of cooling or duration of exposure. Respiration rates ranged from 0.10 ml O2/g/h at -1.0° C to 0.92 ml O2/g/h at 30.0° C. At -1.0° C the respiratory quotient of larvae was 0.72, indicating lipids were being metabolized. Calculated metabolic costs for the overwintering period were 40.5% of total body calories. It is suggested that overwintering frozen into ice at moderately cold temperatures may be energetically advantageous.
Freshwater Invertebrate Biology © 1985 The University of Chicago Press