Dynamics of a host–parasitoid interaction clarified by modelling and DNA sequencing
| Autor: | Ilkka Hanski, Marko Mutanen, Juhani Itämies, Otso Ovaskainen, Paul D. N. Hebert, Gergely Várkonyi, Sean W. J. Prosser |
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| Přispěvatelé: | Organismal and Evolutionary Biology Research Programme, Research Centre for Ecological Change, Ecology and Evolutionary Biology |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Letter Wasps HYMENOPTERA Xestia Northern finland NOCTUIDAE Moths 010603 evolutionary biology 01 natural sciences DNA barcoding DNA sequencing Parasitoid Host-Parasite Interactions periodic occurrence population dynamics Animals Letters FLIES DIPTERA Ecology Evolution Behavior and Systematics POPULATION Finland Larva biology Host (biology) Ecology 010604 marine biology & hydrobiology fungi Species diversity Sequence Analysis DNA Ophion biology.organism_classification MAPL LEPIDOPTERA Evolutionary biology 1181 Ecology evolutionary biology |
| Zdroj: | Ecology Letters |
| ISSN: | 1461-0248 1461-023X |
| Popis: | It has been hypothesised that the 2‐year oscillations in abundance of Xestia moths are mediated by interactions with 1‐year Ophion parasitoid wasps. We tested this hypothesis by modelling a 35‐year time series of Xestia and Ophion from Northern Finland. Additionally, we used DNA barcoding to ascertain the species diversity of Ophion and targeted amplicon sequencing of their gut contents to confirm their larval hosts. Modelling of the time‐series data strongly supported the hypothesised host–parasitoid dynamics and that periodic occurrence of Xestia moths is mediated by Ophion. DNA barcodes revealed that Ophion included five species rather than just one while targeted amplicon sequencing verified that Ophion does parasitise Xestia. At least one Ophion species employs 1‐year Syngrapha interrogationis as an alternate host, but it did not detectably affect Xestia–Ophion dynamics. We also demonstrate the previously unrecognised complexity of this system due to cryptic parasitoid diversity. We provide evidence that the periodic fluctuations in abundance of Xestia moths are mediated by Ophion parasitoids. By sequencing the gut contents of adult parasitoids, we provide genetic evidence of their larval hosts. We also demonstrate cryptic diversity in the studied parasitoids. |
| Databáze: | OpenAIRE |
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