Physiological Responses to Selection for Desiccation Resistance inDrosophila melanogaster
نویسندگان
چکیده
منابع مشابه
Physiological mechanisms of evolved desiccation resistance in Drosophila melanogaster.
We investigated physiological characters associated with water balance in laboratory populations of Drosophila melanogaster selected for resistance to desiccating conditions for over 100 generations. Five replicate, outbred, desiccation-selected (D) populations were compared with their control (C) populations. Water loss rates of female D flies were approximately 40% lower than those of C femal...
متن کاملUsing experimental evolution to study the physiological mechanisms of desiccation resistance in Drosophila melanogaster.
Data from populations undergoing experimental evolution can be used to make comparisons between physiologically differentiated populations and to determine evolutionary trajectories. Comparisons of long-established laboratory populations of Drosophila melanogaster that are strongly differentiated with respect to desiccation resistance are used to test alternative hypotheses concerning the mecha...
متن کاملSelection for increased desiccation resistance in Drosophila melanogaster: additive genetic control and correlated responses for other stresses.
Previously we found that Drosophila melanogaster lines selected for increased desiccation resistance have lowered metabolic rate and behavioral activity levels, and show correlated responses for resistance to starvation and a toxic ethanol level. These results were consistent with a prediction that increased resistance to many environmental stresses may be genetically correlated because of a re...
متن کاملHigh resolution mapping of candidate alleles for desiccation resistance in Drosophila melanogaster under selection.
The ability to counter periods of low humidity is an important determinant of distribution range in Drosophila. Climate specialists with low physiological tolerance to desiccation stress are restricted to the tropics and may lack the ability to further increase resistance through evolution. Although the physiological adaptations to desiccation stress are well studied in Drosophila and other ect...
متن کاملSelection for desiccation resistance in adult Drosophila melanogaster affects larval development and metabolite accumulation.
We studied larval development and acquisition of metabolic resources in Drosophila melanogaster selected for adult desiccation resistance. Desiccation-selected (D) flies had longer developmental times in comparison with control populations, resulting in significantly higher body mass. No differences were found in larval growth rates, suggesting that increased body mass results from the extended...
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ژورنال
عنوان ژورنال: American Zoologist
سال: 1999
ISSN: 0003-1569
DOI: 10.1093/icb/39.2.337