Genotype × genotype interactions between the toxic cyanobacterium Microcystis and its grazer, the waterflea Daphnia

Evolutionary Applications

Veerle Lemaire¹  Silvia Brusciotti¹  Ineke van Gremberghe²  Wim Vyverman²  Joost Vanoverbeke¹ 

[1] Laboratory of Aquatic Ecology and Evolutionary Biology, K.U.Leuven, Leuven, Belgium;Laboratory of Protistology and Aquatic Ecology, Ghent University, Gent, Belgium

关键词: cyanobacteria toxins;    eco‐evolutionary dynamics;    genotype × genotype interactions;    geographic mosaic of coevolution;    harmful algal blooms;    top–down control;   

DOI  :  10.1111/j.1752-4571.2011.00225.x

来源: Wiley

【 摘 要 】

Abstract

Toxic algal blooms are an important problem worldwide. The literature on toxic cyanobacteria blooms in inland waters reports widely divergent results on whether zooplankton can control cyanobacteria blooms or cyanobacteria suppress zooplankton by their toxins. Here we test whether this may be due to genotype × genotype interactions, in which interactions between the large-bodied and efficient grazer Daphnia and the widespread cyanobacterium Microcystis are not only dependent on Microcystis strain or Daphnia genotype but are specific to genotype × genotype combinations. We show that genotype × genotype interactions are important in explaining mortality in short-time exposures of Daphnia to Microcystis. These genotype × genotype interactions may result in local coadaptation and a geographic mosaic of coevolution. Genotype × genotype interactions can explain why the literature on zooplankton–cyanobacteria interactions is seemingly inconsistent, and provide hope that zooplankton can contribute to the suppression of cyanobacteria blooms in restoration projects.

【 授权许可】

Unknown   
© 2011 Blackwell Publishing Ltd. This is an open access article under the terms of the Creative Commons Attribution Non Commercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.