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      Male diet affects female fitness and sperm competition in human- and bat-associated lineages of the common bedbug, Cimex lectularius

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          Abstract

          Sperm performance can vary in ecologically divergent populations, but it is often not clear whether the environment per se or genomic differences arising from divergent selection cause the difference. One powerful and easily manipulated environmental effect is diet. Populations of bedbugs ( Cimex lectularius) naturally feed either on bat or human blood. These are diverging genetically into a bat-associated and a human-associated lineage. To measure how male diet affects sperm performance, we kept males of two HL and BL populations each on either their own or the foreign diet. Then we investigated male reproductive success in a single mating and sperm competition context. We found that male diet affected female fecundity and changed the outcome of sperm competition, at least in the human lineage. However, this influence of diet on sperm performance was moulded by an interaction. Bat blood generally had a beneficial effect on sperm competitiveness and seemed to be a better food source in both lineages. Few studies have examined the effects of male diet on sperm performance generally, and sperm competition specifically. Our results reinforce the importance to consider the environment in which sperm are produced. In the absence of gene flow, such differences may increase reproductive isolation. In the presence of gene flow, however, the generally better sperm performance after consuming bat blood suggests that the diet is likely to homogenise rather than isolate populations.

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              SPERM COMPETITION AND ITS EVOLUTIONARY CONSEQUENCES IN THE INSECTS

               G. A. Parker (1970)
              Biological Reviews, 45(4), 525-567
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                Author and article information

                Contributors
                kremenoj@gmail.com
                Journal
                Sci Rep
                Sci Rep
                Scientific Reports
                Nature Publishing Group UK (London )
                2045-2322
                30 July 2021
                30 July 2021
                2021
                : 11
                Affiliations
                [1 ]GRID grid.10267.32, ISNI 0000 0001 2194 0956, Department of Botany and Zoology, Faculty of Science, , Masaryk University, ; Kotlářská 2, 611 37 Brno, Czech Republic
                [2 ]GRID grid.15866.3c, ISNI 0000 0001 2238 631X, Department of Ecology, Faculty of Environmental Sciences, , Czech University of Life Sciences Prague, ; Kamýcká 129, 165 21 Prague 6, Czech Republic
                [3 ]GRID grid.4488.0, ISNI 0000 0001 2111 7257, Applied Zoology, Department of Biology, , Technische Universität Dresden, ; 01062 Dresden, Germany
                [4 ]GRID grid.7384.8, ISNI 0000 0004 0467 6972, Genomics and Bioinformatics, Bayreuth Center of Ecology and Environmental Research (BayCEER), , University of Bayreuth, ; Universitätsstrasse 30, 95440 Bayreuth, Germany
                [5 ]GRID grid.7384.8, ISNI 0000 0004 0467 6972, Animal Population Ecology, Animal Ecology I, , University of Bayreuth, ; Universitätsstrasse 30, 95440 Bayreuth, Germany
                Article
                94622
                10.1038/s41598-021-94622-6
                8324850
                34330972
                13cd3322-3307-4f59-ab26-c95c6210aa7c
                © The Author(s) 2021

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

                Funding
                Funded by: FundRef http://dx.doi.org/10.13039/501100001824, Grantová Agentura České Republiky;
                Award ID: 18-08468J
                Award ID: 18-08468J
                Award ID: 18-08468J
                Award ID: 18-08468J
                Award Recipient :
                Funded by: FundRef http://dx.doi.org/10.13039/501100010653, Masarykova Univerzita;
                Award ID: MUNI/A/1436/2018
                Award Recipient :
                Funded by: FundRef http://dx.doi.org/10.13039/501100001659, Deutsche Forschungsgemeinschaft;
                Award ID: 1666/4-1
                Award ID: 1666/4-1
                Award ID: 521/4-1
                Award Recipient :
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                © The Author(s) 2021

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                evolutionary ecology, speciation, entomology

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