Negative frequency-dependent selection in female color polymorphism of a damselfly

Evolution; International Journal of Organic Evolution
Yuma TakahashiMamoru Watanabe

Abstract

Negative frequency-dependent selection (NFDS) is one of the most powerful selective forces maintaining genetic polymorphisms in nature. Recently many prospective cases of polymorphisms by NFDS have been reported. Some of them are very complicated, although strongly supportive of the NFDS. Here we investigate NFDS in wild populations of the dimorphic damselfly Ischnura senegalensis, in which females occur as andromorphs and gynomorphs. Specifically, we (1) test fitness responses to morph frequencies, (2) built a simple population genetic model, and (3) compare the observed and predicted morph-frequency dynamics. Fitnesses of the two morphs are an inverse function of its own frequency in a population, and are about equal when their frequencies are similar. Thus the conditions necessary for NFDS are satisfied. The long-term field surveys show that the morph frequencies oscillate with a period of two generations. Morph frequencies in a small population undergo large oscillations whereas those in a large population do small oscillations. The demographic properties of the observed dynamics agree well with those of our model. This example is one of the simplest confirmed cases of NFDS maintaining genetic polymorphisms in nature.

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Citations

Sep 16, 2011·BMC Evolutionary Biology·Yuma TakahashiMamoru Watanabe
Mar 4, 2011·Proceedings. Biological Sciences·Arne IserbytThomas N Sherratt
Jan 16, 2016·Evolution; International Journal of Organic Evolution·Chun-Chia ChouTakefumi Nakazawa
Dec 17, 2014·Evolution; International Journal of Organic Evolution·Zachary W CulumberMichael Tobler
Sep 12, 2015·Journal of Plant Research·Yuma TakahashiMasakado Kawata
Aug 26, 2014·Journal of Evolutionary Biology·C A McLeanA Moussalli
Mar 19, 2014·Evolution; International Journal of Organic Evolution·Kristina Karlsson GreenBengt Hansson
Feb 18, 2014·Biological Reviews of the Cambridge Philosophical Society·Claire A McLean, Devi Stuart-Fox
Feb 9, 2017·Molecular Ecology·Violaine LlaurensMathieu Joron
Nov 1, 2013·Nature·Kimberly A HughesF Helen Rodd
Sep 13, 2016·Science Advances·Saori WatanabeEisuke Hasegawa
May 14, 2020·Evolution; International Journal of Organic Evolution·Beatriz WillinkErik I Svensson
Jun 24, 2020·Evolution; International Journal of Organic Evolution·Md Kawsar Khan
Jan 27, 2019·Ecology and Evolution·Madeleine St Clair YewersClaire Alice McLean
Jun 8, 2018·Ecology and Evolution·Maren WellenreutherRosa A Sánchez-Guillén
May 13, 2021·Ecology and Evolution·Silvana PiersantiOla M Fincke
Sep 17, 2021·Journal of Evolutionary Biology·Alexandra M TyersGeorge F Turner

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