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Photographs by Christie Gibbons '05 of (L-R) Web-Spinning Caddisfly and Gammarus fasciatus
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Invertebrates: May 2, 2005 |
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Site One: Turtle Mound Inlet |
Site Two: Union Lake Outlet |
Site Three: Horse Farm Inlet |
Site Four: Cannon River Entry |
Site Five: St. Olaf Site |
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Amphiod (scud) = Gammarus Ostracod Copepod (2 tails single eye, antennae, swimming appendage) Arthropoda: Gammarus fasciatus |
Arthropoda: Gammarus fasciatus Snails and limpets (Gastropoda lymnaeidae) ranged from 2-25mm A maroon, black and white water spider (?) |
Snails and limpets (2-25mm) Hirudinea (leeches) they have a high tolerance, about 15mm |
Arthropoda: Gammarus fasciatus (lots of them) Ephemeridae: Hexagenia limbata. (These are common Burrowing Mayflies found in soft stream silt/sand, feathered gills on segments 2-7, collector/gatherer) Ephemeroptera larvae: Heptageniidae (Flathead Mayflies), common in streams under rocks, logs, and vegetation, 5-20mm Snails and limpets (Physella gyrina) 2-10mm, scrapers, found on rocks, vegetation, silt, and sand in streams Diptera maggot: Tipulidae (Crane Fly), 50-60mm, found under rocks, sand, leafs in streams Trichoptera (Web-spinning Caddisfly), white segments, about 15mm |
Gammarus fasciatus Ephemeroptera larvae: Heptageniidae (Flathead Mayflies) Diptera maggot: Tipulidae (Crane Fly) Trichoptera (Web-spinning Caddisfly) 2 large crayfish 1 small crayfish 3 small spotted fish with nice blue coloring A giant, writihing crane fly maggot A fingernail clam shell 2+ caddisfly larva (stick and rock case builders) 1 darter |
*According to the Invertebrates team, many of the same specimens were collected on the 9th. The notable exceptions are in Site 5, where the invertebrates listed above, as well as Limmephildae Larvae, Spread-winged damsel fly larvae and Libellulidae (Common Skimmer Dragonfly) were collected on the 9th.