A modified DNA barcode approach to define trophic interactions between native and exotic pentatomids and their parasitoids

Molecular Ecology
Tara D GariepyElijah Talamas

Abstract

The establishment of invasive Halyomorpha halys (Stål) outside of its native range may impact native species assemblages, including other pentatomids and their scelionid parasitoids. This has generated interest in defining species diversity and host-parasitoid associations in this system to better understand the impact of invasive alien species on trophic interactions in invaded regions. Information on scelionid-pentatomid associations in natural habitats is lacking, and species-level identification of these associations can be tenuous using rearing and dissection techniques. Naturally occurring pentatomid eggs were collected in areas where H. halys has established in Canada and were analysed using a modified DNA barcoding approach to define species-level trophic interactions. Identification was possible for >90% of egg masses. Eleven pentatomid and five scelionid species were identified, and trophic links were established. Approximately 70% of egg masses were parasitized; parasitism and parasitoid species composition were described for each species. Telenomus podisi Ashmead was the dominant parasitoid and was detected in all host species. Trissolcus euschisti Ashmead was detected in several host species, but was significantly ...Continue Reading

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Citations

Jun 26, 2020·Biodiversity Data Journal·Huayan ChenHong Pang
Jan 10, 2020·Molecular Ecology·Loren RiesebergPierre Taberlet
Dec 4, 2020·Insects·María de Lourdes Ramírez-AhujaIram P Rodríguez-Sanchez
Dec 12, 2020·Biodiversity Data Journal·Darren WardSarah Tassell
Mar 24, 2021·PloS One·Valeria BertoldiJacques Brodeur
May 30, 2021·Molecular Ecology Resources·Chia-Hua LueJan Hrcek

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