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Title: | Co-introduction of Dolicirroplectanum lacustre, a monogenean gill parasite of the invasive Nile perch Lates niloticus: intraspecific diversification and mitonuclear discordance in native versus introduced areas | Authors: | THYS, Kelly VANHOVE, Maarten Custers, Jonas W. J. Vranken, Nathan VAN STEENBERGE, Maarten KMENTOVA, Nikol |
Issue Date: | 2022 | Publisher: | ELSEVIER SCI LTD | Source: | INTERNATIONAL JOURNAL FOR PARASITOLOGY, 52 (12) , p. 775 -786 | Abstract: | The Nile perch (Lates niloticus) is a notorious invasive species. The introductions of Nile perch into several lakes and rivers in the Lake Victoria region led to the impoverishment of trophic food webs, particularly well documented in Lake Victoria. Additionally, its parasites were co-introduced, including Dolicirroplectanum lacustre (Monogenea, Diplectanidae). Dolicirroplectanum lacustre is the single monoge-nean gill parasite of latid fishes (Lates spp.) inhabiting several major African freshwater systems. We examined the intra-specific diversification of D. lacustre from Lates niloticus in Lake Albert, Uganda (native range) and Lake Victoria (introduced range) by assessing morphological and genetic differentiation, and microhabitat preference. We expected reduced morphological and genetic diversity for D. lacustre in Lake Victoria compared with Lake Albert, as a result of the historical introductions. We found that D. lacustre displayed high morphological variability within and between African freshwaters, with two morphotypes identified, as in former studies. The single shared morphotype between Lake Albert and Lake Victoria dis-played similar levels of haplotype and nucleotide diversity between the lakes. Mitonuclear discordance within the morphotypes of D. lacustre indicates an incomplete reproductive barrier between the morpho-types. The diversification in the mitochondrial gene portion is directly linked with the morphotypes,while the nuclear gene portions indicate conspecificity. Based on our results, we reported reduced genetic and morphological diversity, potentially being a result of a founder effect in Lake Victoria. | Notes: | Thys, KJM (corresponding author), Hasselt Univ, Ctr Environm Sci, Res Grp Zool Biodivers & Toxicol, Agoralaan Gebouw D, B-3590 Diepenbeek, Belgium. kelly.thys@uhasselt.be |
Other: | Note: Nucleotide sequence data reported in this paper are available in GenBank under accession numbers OP422422-OP422433 (18S and ITS-1 rDNA), OP422434-OP422446 (28S rDNA) and OP413590-OP413629 | Keywords: | Parasite co-introduction;Lake Albert;Lake Victoria;Host-parasite interaction;Mito-nuclear discordance;COI | Document URI: | http://hdl.handle.net/1942/36984 | ISSN: | 0020-7519 | e-ISSN: | 1879-0135 | DOI: | https://doi.org/10.1016/j.ijpara.2022.09.001 | ISI #: | 001061022600004 | Rights: | 2022 Australian Society for Parasitology. Published by Elsevier Ltd. All rights reserved. | Category: | A1 | Type: | Journal Contribution | Validations: | vabb 2024 |
Appears in Collections: | Research publications |
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File | Description | Size | Format | |
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Thys et al 2022 bioRxiv.pdf | Non Peer-reviewed author version | 4.9 MB | Adobe PDF | View/Open |
1-s2.0-S0020751922001199-main.pdf Restricted Access | Published version | 1.84 MB | Adobe PDF | View/Open Request a copy |
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