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Ability of aquatic Stratiomyidae (Diptera) larvae to survive stream drying using dormancy

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posted on 2024-03-28, 10:20 authored by Susan Washko, Michael Bogan

To better understand the limitations of dormancy on Odontomyia Meigen, 1803 (Diptera: Stratiomyidae) survival and body condition, we conducted a series of laboratory-based microcosm experiments. We found that Odontomyia larvae can survive at least two extended dry periods (≥30 days) through dormancy. The presence of moisture in the substrate during dormancy is not necessary to survive and had no effect on survival or larval body mass in our experiments. Energy and bodily water loss likely limit survival in dormant stages. Although these results suggest Odontomyia are fairly resistant to drying, more data is needed on body mass, pupation, and reproductive success across hydroregimes. The more we understand about the survival limitations of rock pool aquatic invertebrates, the more successful conservation efforts will be for their unique aquatic biota.

Funding

This research was funded by a Research and Project Grant through the Graduate and Professional Student Council at the University of Arizona.

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