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Funk

Parthenogenesis (Virgin Reproduction), Hybridization, and Life History Plasticity in Mayflies

800 532 Stroud Water Research Center

Scientists are studying a number of mayfly species in White Clay Creek as well as in streams throughout eastern North America to better understand virgin reproduction and hybridization in mayflies,…

Integration of Physiological, Life-History, and Macro-Ecological Approaches for Understanding Thermal Limitation in Aquatic Insects: Implications for Freshwater Biodiversity in a Warming World

800 532 Stroud Water Research Center

In this project, we test the hypothesis that temperature limits the distributions of aquatic insects through its effect on resource allocation, and that warming decreases reproduction by shunting energy away…

Ecotoxicity Study for Mayflies Exposed to Elevated Concentrations of Chloride at Different Temperatures

800 532 Stroud Water Research Center

Chloride concentrations in surface waters have been increasing over the last several decades at multiple locations throughout the United States. At times, it appears that ambient chloride concentrations now reach…

Mayfly Eggs Hatching a Minute After Being Laid

719 403 Stroud Water Research Center

This ovoviviparous mayfly holds her eggs internally until embryonic development is complete after which she lays them in water and they hatch immediately.

Monitoring the Health of the Susquehanna

900 506 Stroud Water Research Center

Stroud™ Water Research Center’s annual sampling of the Susquehanna River near Mehoopany, Pennsylvania, was chronicled in an article in an area newspaper. Stroud Center studies have shown that the health…

Mystery Midge with “Kite Tail” Eggs

714 400 Stroud Water Research Center

Stroud Center entomologist David Funk documented the unusual behavior of an orthoclad midge species at Lake Umbagog on the Maine/New Hampshire border: Adult females fly over the lake and extrude…

Physiological responses to short-term thermal stress in mayfly (Neocloeon triangulifer) larvae in relation to upper thermal limits

1024 681 Stroud Water Research Center

Kim, K.S., H. Chou, D.H. FunkJ.K. JacksonB.W. Sweeney, and D.B. Buchwalter. 2017. Journal of Experimental Biology 220:2598–2605.

Mystery Midge with “Kite Tail” Eggs

300 225 Stroud Water Research Center

Stroud Center entomologist David Funk documented the unusual behavior of an orthoclad midge species at Lake Umbagog on the Maine/New Hampshire border: Adult females fly over the lake and extrude long strings of eggs which they eventually drop into the water.