2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
6/08/2017 | 3:00 PM - 3:15 PM | EFFECTS OF CHELIPED LOSS ON CRAYFISH BURROWING: ENERGETIC COSTS AND CHANGES IN BURROW CONSTRUCTION. | 305A
EFFECTS OF CHELIPED LOSS ON CRAYFISH BURROWING: ENERGETIC COSTS AND CHANGES IN BURROW CONSTRUCTION.
Crayfish are important ecosystem engineers that modify stream environments through burrowing. Such behaviors have profound effects on the ecosystem, altering water properties, the physical state of the soil, and the survival of other organisms. While the ecological impacts of crayfish burrowing have been well documented, the physical costs associated with burrowing and the abilities required for successful burrowing have not received much attention. Specifically, the effects of self-amputation (autonomy) and limb regeneration on burrowing performance following limb damage or predation threat have not been investigated, yet might significantly inhibit burrowing performance. Here we show that crayfish with amputated limbs are unable to construct burrows with chimneys, yet the ability to construct proper burrows increases as limbs regenerate. We also show that crayfish undergoing regeneration of one of their chelipeds need more time, complete less complex burrow, consume more oxygen, and secrete more ammonia during burrowing than non-regenerative crayfish, suggesting energetic costs of burrowing while undergoing limb regeneration. Identifying the factors that influence major stream engineers, such as crayfish, might help us find ways to manage and protect these communities.
- C11 Community Ecology
- C15 Population Ecology
- S12 Challenges, insights, and opportunities in crayfish conservation and ecology
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Presenters/Authors
LUC DUNOYER
(), University of Kentucky, lucdunoyer@gmail.com;
ASHA DISCLOSURE:
Financial -
Nonfinancial -