Variation in behaviour of native prey mediates the impact of an invasive species on plankton communities.
IF 2.3 3区 生物学Q2 MULTIDISCIPLINARY SCIENCESPeerJPub Date : 2024-12-12eCollection Date: 2024-01-01DOI:10.7717/peerj.18608
Sarah S Hasnain, Shelley E Arnott
{"title":"Variation in behaviour of native prey mediates the impact of an invasive species on plankton communities.","authors":"Sarah S Hasnain, Shelley E Arnott","doi":"10.7717/peerj.18608","DOIUrl":null,"url":null,"abstract":"<p><p>Trait variation in predator populations can influence the outcome of predator-prey dynamics, with consequences for trophic dynamics and ecosystem functioning. However, the influence of prey trait variation on the impacts of predators is not well understood, especially for introduced predators where variation in prey can shape invasion outcomes. In this study, we investigated if intra-specific differences in vertical position of <i>Daphnia</i> influenced the impacts of the invasive zooplankton predator, <i>Bythotrephes cederströmii,</i> on plankton communities. Our results show that vertical position of <i>Daphnia</i> influenced <i>Bythotrephes</i> predation on smaller cladoceran species and impacts on primary production. Larger reductions in small cladoceran density and greater algal biomass were observed in mesocosms with less spatial overlap between <i>Daphnia</i> and <i>Bythotrephes</i>. These results suggest that differences in vertical position of <i>Daphnia</i> can alter the type and magnitude of <i>Bythotrephes</i> impacts in invaded systems.</p>","PeriodicalId":19799,"journal":{"name":"PeerJ","volume":"12 ","pages":"e18608"},"PeriodicalIF":2.3000,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11646421/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"PeerJ","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.7717/peerj.18608","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/1/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Trait variation in predator populations can influence the outcome of predator-prey dynamics, with consequences for trophic dynamics and ecosystem functioning. However, the influence of prey trait variation on the impacts of predators is not well understood, especially for introduced predators where variation in prey can shape invasion outcomes. In this study, we investigated if intra-specific differences in vertical position of Daphnia influenced the impacts of the invasive zooplankton predator, Bythotrephes cederströmii, on plankton communities. Our results show that vertical position of Daphnia influenced Bythotrephes predation on smaller cladoceran species and impacts on primary production. Larger reductions in small cladoceran density and greater algal biomass were observed in mesocosms with less spatial overlap between Daphnia and Bythotrephes. These results suggest that differences in vertical position of Daphnia can alter the type and magnitude of Bythotrephes impacts in invaded systems.
期刊介绍:
PeerJ is an open access peer-reviewed scientific journal covering research in the biological and medical sciences. At PeerJ, authors take out a lifetime publication plan (for as little as $99) which allows them to publish articles in the journal for free, forever. PeerJ has 5 Nobel Prize Winners on the Board; they have won several industry and media awards; and they are widely recognized as being one of the most interesting recent developments in academic publishing.