2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/24/2018 | 12:15 PM - 12:30 PM | TRUE FRENEMIES: INTERACTIONS BETWEEN LARVAE OF THE ENDANGERED HINE'S EMERALD DRAGONFLY (SOMATOCHLORA HINEANA), AND ITS TEMPERAMENTAL CRAYFISH ROOMMATE. | 420 A
TRUE FRENEMIES: INTERACTIONS BETWEEN LARVAE OF THE ENDANGERED HINE'S EMERALD DRAGONFLY (SOMATOCHLORA HINEANA), AND ITS TEMPERAMENTAL CRAYFISH ROOMMATE.
The Hine’s emerald dragonfly (HED) is a federally listed endangered species with a complex relationship with the omnivorous devil crayfish (Cambarus diogenes). They use crayfish burrows as refuge during winter and periods of low water, over their 4 to 5 year larval life. To explore how these larvae survive cohabitation with a predator, we analyzed 16 years of data looking for patterns of burrow occupancy. Burrow mesocosm studies were conducted to examine behavioral interactions between HED larvae and crayfish. Field studies indicate that larvae are found in greater numbers in specific burrows, and exhibit high burrow system fidelity. Mesocosm experiments suggest that low detectability of the HED larvae by the crayfish plays a role and allows coexistence for prolonged periods. The complex dependency of this endangered dragonfly on a predator and competitor, highlights the need for the integration of ongoing ecological and behavioral studies into conservation efforts.
- Conservation
- Behavior
- Predator-prey
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Presenters/Authors
Patricia Dombrowski
(), University of South Dakota, dombrowskitrish22@gmail.com;
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Daniel Soluk
(), University of South Dakota, daniel.soluk@usd.edu ;
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