Species invasion history influences community evolution in a tri-trophic food web model.
BACKGROUND
Recent experimental studies have demonstrated the importance of invasion history for evolutionary formation of community. However, only few theoretical studies on community evolution have focused on such views.


RESULTS
We used a tri-trophic food web model to analyze the coevolutionary effects of ecological invasions by a mutant and by a predator and/or resource species of a native consumer species community and found that ecological invasions can lead to various evolutionary histories. The invasion of a predator makes multiple evolutionary community histories possible, and the evolutionary history followed can determine both the invasion success of the predator into the native community and the fate of the community. A slight difference in the timing of an ecological invasion can lead to a greatly different fate. In addition, even greatly different community histories can converge as a result of environmental changes such as a predator trait shift or a productivity change. Furthermore, the changes to the evolutionary history may be irreversible.


CONCLUSIONS
Our modeling results suggest that the timing of ecological invasion of a species into a focal community can largely change the evolutionary consequences of the community. Our approach based on adaptive dynamics will be a useful tool to understand the effect of invasion history on evolutionary formation of community.
Mougi
Akihiko
A
Department of Biology, Kyushu University, Fukuoka, Fukuoka, Japan. mougi@bio-math10.biology.kyushu-u.ac.jp
Nishimura
Kinya
K
D000818:Animals; D044822:Biodiversity; D005075:Biological Evolution; D004463:Ecology; D020387:Food Chain; D008954:Models, Biological
Proc Biol Sci. 2004 Sep 22;271(1551):1947-53
15347519
Nature. 2007 Mar 22;446(7134):432-5
17377581
Am Nat. 2000 Oct;156(S4):S45-S61
29592581
Proc Biol Sci. 2000 Aug 22;267(1453):1671-8
11467431
Proc Biol Sci. 2006 Apr 22;273(1589):983-90
16627284
Proc Biol Sci. 2001 Dec 22;268(1485):2589-94
11749715
Evolution. 1999 Aug;53(4):993-1008
28565508
Proc Natl Acad Sci U S A. 2005 Dec 13;102(50):18040-5
16330783
Proc R Soc Lond B Biol Sci. 1979 Sep 21;205(1161):489-511
42057
Bull Math Biol. 2001 Sep;63(5):981-93
11565412
J Math Biol. 1996;34(5-6):556-78
8691085
J Theor Biol. 1997 Jun 21;186(4):527-34
9278725
Science. 2004 Oct 1;306(5693):111-4
15459391
J Math Biol. 1996;34(5-6):579-612
8691086
Ecol Lett. 2006 Mar;9(3):357-74
16958902
Trends Ecol Evol. 2007 May;22(5):250-7
17296244
Evolution. 2004 Jun;58(6):1165-77
15266967
Nature. 1999 Jul 22;400(6742):354-7
10432112
Proc Natl Acad Sci U S A. 2006 Apr 18;103(16):6230-5
16585519
Nature. 2007 Mar 22;446(7134):436-9
17377582
Am Nat. 2000 Oct;156(S4):S77-S101
29592583
Science. 2004 Jan 16;303(5656):356-9
14726588
Am Nat. 1999 Nov;154(5):497-509
10561123
J Theor Biol. 1995 Sep 7;176(1):91-102
7475110
Ecol Lett. 2007 Feb;10(2):115-26
17257099
Proc Biol Sci. 2006 Aug 22;273(1597):1987-98
16846905