Mosaic or melting pot: The use of monogeneans as a biological tag and magnifying glass to discriminate introduced populations of Nile tilapia in sub-Saharan Africa |
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| Affiliation: | 1. UHasselt – Hasselt University, Faculty of Sciences, Centre for Environmental Sciences, Research Group Zoology: Biodiversity and Toxicology, Diepenbeek, Belgium;2. Department of Biology, Royal Museum for Central Africa, Tervuren, Belgium;3. Department of Biological Sciences, University of Zimbabwe, Harare, Zimbabwe;4. Department of Biological Sciences, University of Botswana, Gaborone, Botswana;5. Lake Kariba Research Station, University of Zimbabwe, Kariba, Zimbabwe;6. Department of Biological Sciences, University of Ngaoundéré, Ngaoundéré, Cameroon;7. Département de Biologie et Physiologie Animales, Université de Yaoundé I, Yaoundé, Cameroon;8. Department of Management of Fisheries and Aquatic Ecosystems, Institute of Fisheries, University of Douala, Douala, Cameroon;9. Unité de Recherche en Biodiversité et Exploitation durable des Zones Humides (BEZHU), Faculté des Sciences Agronomiques, Université de Lubumbashi, Lubumbashi, Democratic Republic of the Congo;10. Section de Parasitologie, Département de Biologie, Centre de Recherche en Hydrobiologie, Uvira, Democratic Republic of the Congo;11. Zoology Unit, Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland |
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| Abstract: | The origin of introduced Nile tilapia stocks in sub-Saharan Africa is largely unknown. In this study, the potential of monogeneans as a biological tag and magnifying glass is tested to reveal their hosts' stocking history. The monogenean gill community of different Nile tilapia populations in sub-Saharan Africa was explored, and a phylogeographic analysis was performed based on the mitogenomes of four dactylogyrid species (Cichlidogyrus halli, C. sclerosus, C. thurstonae, and Scutogyrus longicornis). Our results encourage the use of dactylogyrids as biological tags. The magnifying glass hypothesis is only confirmed for C. thurstonae, highlighting the importance of the absence of other potential hosts as prerequisites for a parasite to act as a magnifying glass. With the data generated here, we are the first to extract mitogenomes from individual monogeneans and to perform an upscaled survey of the comparative phylogeography of several monogenean species with unprecedented diagnostic resolution. |
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