2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/24/2018 | 12:00 PM - 12:15 PM | SEASONAL MIGRATION OF CORIXIDS (HEMIPTERA: CORIXIDAE) AS A LINKAGE BETWEEN WETLAND AND RIVER ECOSYSTEMS | 420 A
SEASONAL MIGRATION OF CORIXIDS (HEMIPTERA: CORIXIDAE) AS A LINKAGE BETWEEN WETLAND AND RIVER ECOSYSTEMS
Linkages between spatially separated water bodies in the form of migratory insects have the potential to greatly influence ecosystem functioning and food web dynamics. Migratory insects that act as food web subsidies can also be instrumental to fish production in lotic ecosystems. We have identified a potentially important subsidy in the form of migrating corixids (Hemiptera: Corixidae) that move from wetlands into the North and South Saskatchewan Rivers during the fall. Results from 2015 and 2016 indicate that corixid migration begins in late September, marked by tremendous increases in abundance in the rivers and decreased abundances of migratory corixid species in wetlands. A shift in species composition also occurs as wetland migrants arrive in the rivers. The stable isotope of sulphur was used to trace this migration between the two habitats. Gut content analyses show that goldeye (Hiodon alosoides), mooneye (Hiodon tergisus), longnose sucker (Catostomus catostomus) and white sucker (Catostomus commersoni), make heavy use this forage subsidy. This study could underscore a need for the integrated conservation of both wetland and river habitats by characterizing a linkage that exists between these spatially separated ecosystems.
- Invertebrate
- Pulse
- Wetland
Presentation:
This presentation has not yet been uploaded.
Handouts:
Handout is not Available
Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference
Presenters/Authors
Stephen Srayko
(), University of Saskatchewan, shs176@mail.usask.ca;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Tim Jardine
(), University of Saskatchewan, tim.jardine@usask.ca;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Iain Phillips
(), Troutreach Saskatchewan/ Water Security Agency of Saskatchewan, iain.phillips@wsask.ca;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
Doug Chivers
(), University of Saskatchewan, doug.chivers@usask.ca;
ASHA DISCLOSURE:
Financial -
Nonfinancial -