Format

Send to

Choose Destination
See comment in PubMed Commons below
J Exp Biol. 2004 May;207(Pt 11):1797-802.

Preservation of reproductive behaviors during modest cooling: rapid cold-hardening fine-tunes organismal response.

Author information

  • 1Department of Zoology, Miami University, Oxford, OH 45056, USA.

Abstract

The primary objectives of this study were to determine (1) whether rapid cold-hardening (RCH) preserves reproductive behaviors during modest cooling, (2) whether increased mating success at a lower temperature comes at the cost of decreased performance at a higher temperature and (3) whether RCH is associated with an elevated metabolic rate. Drosophila melanogaster (Diptera: Drosphilidae) were rapidly cold-hardened by a 2-h exposure to 16 degrees C prior to experiments. A temperature decrease of only 7 degrees C (23 degrees C to 16 degrees C) prevented half (11/22) of the control pairs of D. melanogaster from engaging in any courtship activity. By contrast, most RCH pairs courted (17/20). Additionally, the 7 degrees C transfer prevented mating in every pair of control flies, whereas more than half (11/20) of the RCH pairs mated. There was no evidence of impaired courtship or mating performance when RCH pairs were tested at 23 degrees C. Finally, RCH is apparently not an energy-demanding process because no increase in the metabolic rate was detected during its induction. Overall, these data demonstrate that RCH serves to constantly fine-tune an insect's physiological state to match slight changes in environmental temperature. Furthermore, the RCH response is not restricted to cryoprotection and survival in the cold but also preserves more subtle behaviors, such as courtship, at moderate to high temperatures throughout the year.

PMID:
15107435
[PubMed - indexed for MEDLINE]
Free full text

LinkOut - more resources

Full Text Sources

Other Literature Sources

Molecular Biology Databases

Miscellaneous

PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire
    Loading ...
    Write to the Help Desk