Imperial College London
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DrThomasScheuerl

Faculty of Natural Sciences, Department of Life Sciences (Silwood Park)

Visiting Researcher
 
 
 
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t.scheuerl CV

 
 
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Location

 

Centre for Population BiologySilwood Park

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Summary

 

Publications

Citation

BibTex format

@article{Scheuerl:2013:10.1002/ece3.781,
author = {Scheuerl, T and Stelzer, C-P},
doi = {10.1002/ece3.781},
journal = {Ecology and Evolution},
pages = {4253--4264},
title = {Patterns and dynamics of rapid local adaptation and sex in varying habitat types in rotifers},
url = {http://dx.doi.org/10.1002/ece3.781},
volume = {3},
year = {2013}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Local adaptation is an important principle in a world of environmental changeand might be critical for species persistence. We tested the hypothesis thatreplicated populations can attain rapid local adaptation under two varying laboratoryenvironments. Clonal subpopulations of the cyclically parthenogeneticrotifer Brachionus calyciflorus were allowed to adapt to two varying harsh and abenign environment: a high-salt, a food-limited environment and untreatedculture medium (no salt addition, high food). In contrast to most previousstudies, we re-adjusted rotifer density to a fixed value (two individuals per ml)every 3–4 days of unrestricted population growth, instead of exchanging a fixedproportion of the culture medium. Thus our dilution regime specificallyselected for high population growth during the entire experiment and it allowedus to continuously track changes in fitness (i.e., maximum population growthunder the prevailing conditions) in each population. After 56 days (43 asexualand eight sexual generations) of selection, the populations in the harsh environmentsshowed a significant increase in fitness over time relative to the beginningcompared to the population in untreated culture medium. Furthermore,the high-salt population exhibited a significantly elevated ratio of sexual offspringfrom the start of the experiment, which suggested that this environmenteither triggered higher rates of sex or that the untreated medium and the foodlimitedenvironment suppressed sex. In a following assay of local adaptation wemeasured population fitness under “local” versus “foreign” conditions (populationsadapted to this environment compared to those of the other environment)for both harsh habitats. We found significantly higher fitness values forthe local populations (on average, a 38% higher fitness) compared to theforeign populations. Overall, local adaptation was formed rapidly and it seemedto be more pronounced in the high-salt treatment.
AU  - Scheuerl,T
AU  - Stelzer,C-P
DO  - 10.1002/ece3.781
EP  - 4264
PY  - 2013///
SN  - 2045-7758
SP  - 4253
TI  - Patterns and dynamics of rapid local adaptation and sex in varying habitat types in rotifers
T2  - Ecology and Evolution
UR  - http://dx.doi.org/10.1002/ece3.781
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000326286700018&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/31145
VL  - 3
ER  -
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