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Funk

Isopoda (aquatic sowbugs)

Test Your Skills With the #MysteryMacro Quiz

600 400 Stroud Water Research Center

Want a fun way to learn about freshwater macroinvertebrates? Check out the Pennsylvania Fish and Boat Commission #MysteryMacro quiz featuring photos by Dave Funk.

Publication title with image of a mayfly

The good, the bad and the lethal: gene expression and metabolomics reveal physiological mechanisms underlying chronic thermal effects in mayfly larvae (Neocloeon triangulifer)

350 210 Stroud Water Research Center

Chou, H., W. Pathmasiri, J. Deese-Spruill, S.J. Sumner, D. Jima, D. Funk, J. Jackson, B. Sweeney, and D. Buchwalter. 2018. Frontiers in Ecology and Evolution 6:27.

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,…

Still from mayfly egg hatching video.

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.

An entomologist sorts samples seated at a table in the Susquehanna River.

Monitoring the Health of the Susquehanna

900 506 Stroud Water Research Center

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

Still from the mystery midge video.

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…

A stream cascade in Lofty Creek, Pennsylvania.

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.