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A new set of laboratory-selected Drosophila melanogaster lines for the analysis of desiccation resistance: response to selection, physiology and correlated responses

Telonis-Scott, Marina, Guthridge, Kathyrn M. and Hoffmann, Ary A. 2006, A new set of laboratory-selected Drosophila melanogaster lines for the analysis of desiccation resistance: response to selection, physiology and correlated responses, Journal of experimental biology, vol. 209, no. Pt 10, pp. 1837-1847, doi: 10.1242/jeb.02201.

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Title A new set of laboratory-selected Drosophila melanogaster lines for the analysis of desiccation resistance: response to selection, physiology and correlated responses
Author(s) Telonis-Scott, MarinaORCID iD for Telonis-Scott, Marina orcid.org/0000-0002-8524-5538
Guthridge, Kathyrn M.
Hoffmann, Ary A.
Journal name Journal of experimental biology
Volume number 209
Issue number Pt 10
Start page 1837
End page 1847
Total pages 12
Publisher Company of Biologists
Place of publication Cambridge, Eng.
Publication date 2006-05
ISSN 0022-0949
Keyword(s) Adaptation, Physiological
Animals
Dehydration
Drosophila melanogaster
Female
Fertility
Larva
Male
Ovum
Science & Technology
Life Sciences & Biomedicine
Biology
Life Sciences & Biomedicine - Other Topics
desiccation resistance
laboratory selection
physiology
dehydration tolerance
LIFE-HISTORY EVOLUTION
STRESS RESISTANCE
STARVATION RESISTANCE
ENVIRONMENTAL-STRESS
COLD RESISTANCE
WATER-BALANCE
TRADE-OFFS
REPRODUCTION
INSECTS
COST
Summary Artificial selection experiments provide insights into the evolutionary factors that can shape adaptive responses and have previously been utilized to examine the physiological adaptations that can improve survival to desiccation in Drosophila melanogaster. While such studies demonstrate that multiple resistance mechanisms may arise via different base populations and selection regimes, water retention emerges as a key mechanism for desiccation survival. Here, we present the physiological, correlated response and life history data for a new set of selection lines designed for the genetic dissection of desiccation resistance. After 26 generations of selection for desiccation resistance, female survival increased twofold. In contrast to previous studies, the altered resistance was associated primarily with enhanced dehydration tolerance and increased mass and less consistently with decreased rates of water loss. Life history tradeoffs and correlated selection responses were examined and overlap with previously published data. We crossed the resistant selected lines to desiccation-sensitive lines from the same control background to examine how each heterozygous resistant chromosome (excluding four) may improve desiccation resistance and observed that most of the resistance was due to genes on the third and first chromosomes, although interaction effects with the second chromosome were also detected. Results are compared to other selection responses and highlight the multiple evolutionary solutions that can arise when organisms are faced with a common selection pressure, although water loss rate remains a common mechanism in all studies.
Language eng
DOI 10.1242/jeb.02201
Indigenous content off
Field of Research 06 Biological Sciences
11 Medical and Health Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2006, The Company of Biologists Limited
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30126320

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.