Life at high latitudes does not require circadian behavioral rhythmicity under constant darkness
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F19%3A00511174" target="_blank" >RIV/60077344:_____/19:00511174 - isvavai.cz</a>
Alternative codes found
RIV/60076658:12310/19:43899783
Result on the web
<a href="https://www.cell.com/current-biology/pdf/S0960-9822(19)31194-7.pdf" target="_blank" >https://www.cell.com/current-biology/pdf/S0960-9822(19)31194-7.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cub.2019.09.032" target="_blank" >10.1016/j.cub.2019.09.032</a>
Alternative languages
Result language
angličtina
Original language name
Life at high latitudes does not require circadian behavioral rhythmicity under constant darkness
Original language description
Nearly all organisms evolved endogenous self-sustained timekeeping mechanisms to track and anticipate cyclic changes in the environment. Circadian clocks, with a periodicity of about 24 h, allow animals to adapt to day-night cycles. Biological clocks are highly adaptive, but strong behavioral rhythms might be a disadvantage for adaptation to weakly rhythmic environments such as polar areas [1, 2]. Several high-latitude species, including Drosophila species, were found to be highly arrhythmic under constant conditions [3-6]. Furthermore, Drosophila species from subarctic regions can extend evening activity until dusk under long days. These traits depend on the clock network neurochemistry, and we previously proposed that high-latitude Drosophila species evolved specific clock adaptations to colonize polar regions [5, 7, 8]. We broadened our analysis to 3 species of the Chymomyza genus, which diverged circa 5 million years before the Drosophila radiation [9] and colonized both low and high latitudes [10,11]. C.costata, pararufithorax, and procnemis, independently of their latitude of origin, possess the clock neuronal network of low-latitude Drosophila species, and their locomotor activity does not track dusk under long photoperiods. Nevertheless, the high-latitude C.costata becomes arrhythmic under constant darkness (DD), whereas the two low-latitude species remain rhythmic. Different mechanisms are behind the arrhythmicity in DD of C.costata and the high-latitude Drosophila ezoana, suggesting that the ability to maintain behavioral rhythms has been lost more than once during drosophilids' evolution and that it might indeed be an evolutionary adaptation for life at high latitudes.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10602 - Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Current Biology
ISSN
0960-9822
e-ISSN
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Volume of the periodical
29
Issue of the periodical within the volume
22
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
3928-3936
UT code for WoS article
000497786500033
EID of the result in the Scopus database
2-s2.0-85074785773