دورية أكاديمية
Range expansions transition from pulled to pushed waves as growth becomes more cooperative in an experimental microbial population.
| العنوان: | Range expansions transition from pulled to pushed waves as growth becomes more cooperative in an experimental microbial population. |
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| المؤلفون: | Gandhi SR; Physics of Living Systems Group, Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139;, Yurtsev EA; Physics of Living Systems Group, Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139;, Korolev KS; Department of Physics, Boston University, Boston, MA 02215; Graduate Program in Bioinformatics, Boston University, Boston, MA 02215 korolev@bu.edu gore@mit.edu., Gore J; Physics of Living Systems Group, Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139; korolev@bu.edu gore@mit.edu. |
| المصدر: | Proceedings of the National Academy of Sciences of the United States of America [Proc Natl Acad Sci U S A] 2016 Jun 21; Vol. 113 (25), pp. 6922-7. Date of Electronic Publication: 2016 May 16. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Comment |
| اللغة: | English |
| بيانات الدورية: | Publisher: National Academy of Sciences Country of Publication: United States NLM ID: 7505876 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1091-6490 (Electronic) Linking ISSN: 00278424 NLM ISO Abbreviation: Proc Natl Acad Sci U S A Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Washington, DC : National Academy of Sciences |
| مواضيع طبية MeSH: | Biological Evolution* , Population Dynamics*, Ecology ; Models, Biological ; Population Growth |
| مستخلص: | Range expansions are becoming more frequent due to environmental changes and rare long-distance dispersal, often facilitated by anthropogenic activities. Simple models in theoretical ecology explain many emergent properties of range expansions, such as a constant expansion velocity, in terms of organism-level properties such as growth and dispersal rates. Testing these quantitative predictions in natural populations is difficult because of large environmental variability. Here, we used a controlled microbial model system to study range expansions of populations with and without intraspecific cooperativity. For noncooperative growth, the expansion dynamics were dominated by population growth at the low-density front, which pulled the expansion forward. We found these expansions to be in close quantitative agreement with the classical theory of pulled waves by Fisher [Fisher RA (1937) Ann Eugen 7(4):355-369] and Skellam [Skellam JG (1951) Biometrika 38(1-2):196-218], suitably adapted to our experimental system. However, as cooperativity increased, the expansions transitioned to being pushed, that is, controlled by growth and dispersal in the bulk as well as in the front. Given the prevalence of cooperative growth in nature, understanding the effects of cooperativity is essential to managing invading species and understanding their evolution. |
| التعليقات: | Comment in: Proc Natl Acad Sci U S A. 2016 Jun 21;113(25):6819-20. (PMID: 27247415) Comment on: Proc Natl Acad Sci U S A. 2016 Jun 21;113(25):6819-20. (PMID: 27247415) |
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| معلومات مُعتمدة: | DP2 AG044279 United States AG NIA NIH HHS |
| فهرسة مساهمة: | Keywords: Allee effect; Fisher wave; biological invasion |
| تواريخ الأحداث: | Date Created: 20160518 Date Completed: 20170125 Latest Revision: 20181202 |
| رمز التحديث: | 20231215 |
| مُعرف محوري في PubMed: | PMC4922184 |
| DOI: | 10.1073/pnas.1521056113 |
| PMID: | 27185918 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 1091-6490 |
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| DOI: | 10.1073/pnas.1521056113 |