KÝm­macroinvertebrates1uCreated by Tracy Cindric in 2002 for use with ecology classes using macroinvertebrates to moniter creek water quality'ÿÿ CXAttdata1/4" - 1/2" (6mm-1cm)€less than 1/4" ( 6mm)€1/2-3/4" (1cm-2cm)€3/4-1" (2cm-2.5cm)€1-1 1/2" (2.5cm-4cm)€1 1/2-2" (4cm-5cm)€longer than 2" (5 cm)€'Shell has a swirl with opening on rightjHold the organism so the apex (pointy part) of the shell is at the top. Opening to shell is on the right,€ Shell is flat€3 seperate tailsL3 tails are oar shaped and come from one location on the rear of the critter Slide10.JPG€Tail pieces overlap Tail looks like a lobster's tail Slide8.JPG€2 legs present€6 legs present€8 legs present€Less than 55 F (12.8 C)€Suction pad on end€Large, easily seen eyes€$Eyes difficult to see or not present€Saucer shaped body€Worm-shaped body€Lobster-like body€ 2 thin tailsA2 long, thin, hair-like tails extend from the rear of the critter Slide1a.JPG€ 2 hooks at end€ 4 hooks at end Slide6.JPG€"Many feelers present on lower half Slide6.JPG€pH 6€pH 7€5End appears swollen (1.5 times as large as other end)€Finger-like lobes at end Lobes look like small bull horns Slide11.JPG€pH 8€pH 9€ 3 thin tailsA3 long, thin, hair-like tails extend from the rear of the critter Slide2.JPG€ Antennae presentJAntennae (whisker-like projectiong from the front of the head) are present antennae.jpg€!Between 55 F and 68 F (12.8-20 C)€More than 68 F (20 C)€8-10 ppm€$Shell has swirl with opening on leftiHold the organism so the apex (pointy part) of the shell is at the top. Opening to shell is on the left.€4-8 ppm€0-4 ppmÿÿ CXMenudataÿÿkn )€Size©Measure the body of the critter (include tails and antennae) using the ruler provided. Try to make your measurements gently and quickly return the critter to the creek.Stonefly w meas line.gif)€Shell VHard outer shell can be swirled like an ice cream cone or flat and joined at one area. Slide1.JPG$)€LegssCount the number of legs and type of legs present, if there are any. Be careful to avoid counting feelers as legs.Macroinveritbrates.jpg)€Number of legs )€Abiotic Factors\Use the test kits given to determine the pH, dissolved oxygen, and temperature of the water.)€Eyes=Quickly glance at the critter. Are eyes immediately visible?Eyes.jpg)€ Body Shape+Determine the general shape of the critter.Body Shape.jpg)€Water pH.Use the test strips to determine the water pH.)€Antennae\Be careful when using this characteristic. Remember that antennae can be broken off easily. antennae.jpg )€Caudal Features  )€ Tail(s) )€ Thin, hair-like tails)€ Hooks at end)€ Fan shaped tail#tail(s) spread out like an open fan Slide10.JPG )€ Feelers present on lower halfDfeelers are in pairs on sides of body. May be misidentified as legs Slide6.JPG)€ Temperature!")€ Worm-like end?rear portion is nearly the same size as the rest of the critter)€Dissolved Oxygen#%&ÈStream Quality Assessment Biological Monitoring Power Point by Linda Pettit (Franklin Soil and Water Conservation District- Address: 1660 Gateway Cr Suite 2 Grove City, OH 43123 Phone: 614-801-9450)_Taxa Tolerance Values (SWCSMH) http://lakes.chebucto.org/ZOOBENTH/BENTHOS/tolerance.html#familyqAquatic Macroinvertebrate Identification Key http://www.people.virginia.edu/~sos-iwla/Stream-Study/Key/Key1.HTMLeMacroinvertebrate Database Introduction (Streamwatch) http://www.streamwatch.org.au/main.jsp?qref=21UMacroinvertebrate Activity http://www.hwr.arizona.edu/globe/Hydro/G3/MacroMay04.htmlQKey to Aquatic Macroinvertebrates http://www.dec.state.ny.us/website/dow/stream/UWater What-ifs http://www.ncsu.edu/sciencejunction/depot/experiments/water/index.htmlcBiological Indicators of Watershed Health http://www.epa.gov/bioindicators/html/benthosclean.htmlÿÿ CXItemname Aquatic worm (Class Oligochaeta)=€$Black fly larvae (Phylum Simuliidae)=€$Caddislfy larvae (Order Trichoptera)=€ Clam (Class Bivalvia)=€ #Crane fly Larvae (Phylum Tipulidae)=€Crayfish (Family Cambaridae)=€%Damselfly Nymph (Suborder Zygoptera )=€5Dobsonfly Larvae or Hellgrammite (Family Corydalidae)=€&Dragonfly nymph (Suborder Anisoptera )=€Gilled Snail (Class Gastropoda)=€ Leech (Class Hirudinea)=€"Mayfly nymph (Order Ephemeroptera)=€ "Midge larvae (Order Ephemeroptera)=€'Pouch (lunged) snail (Class Gastropoda)=€!Stonefly nymph (Order Plecoptera)=€.Water penny beetle larvae (Family Psephenidae)ÿÿ CXItemrecÿÿÿÿÿÿÿÿÿÿÿÿ®Stonefly has two tails and long antennae. This critter is found in high quality water only. Finding this macroinvertebrate indicates water with very little or no pollution. Slide1a.JPGN€ ÿÿÿÿÿÿÿÿÿÿÿÿ¯Mayfly has three tails and short antennae. This critter is found in high quality water only. Finding this macroinvertebrate indicates water with very little or no pollution. Slide2.JPGN€ÿÿÿÿÿÿÿÿÿÿÿÿåFlat, circular body. Usually found attached under rocks in quickly flowing areas of the stream. This critter is found in high quality water only. Finding this macroinvertebrate indicates water with very little or no pollution. Slide3.JPGN€ ÿÿÿÿÿÿÿÿÿÿÿÿðShell opens to the right when the snail is held so the apex is at the top and the opening is at the bottom. This critter is found in high quality water only. Finding this macroinvertebrate indicates water with very little or no pollution. Slide4.JPGN€ÿÿÿÿÿÿÿÿÿÿÿÿÿ<Worm-like body with 6 legs near head. Body is usually greenish with a dark head. Found under rocks located in swiftly moving current in "rock house" (see picture) on bottom of rock. This critter is found in high quality water only. Finding this macroinvertebrate indicates water with very little or no pollution. Slide5.JPGN€ÿÿÿÿÿÿÿÿÿÿÿÿÿHas 6 legs on upper third of body and many paired feelers on lower two-thirds of body. Has pinchers near mouth - be careful! This critter is found in high quality water only. Finding this macroinvertebrate indicates water with very little or no pollution. Slide6.JPGN€ÿÿÿÿÿÿÿÿÿÿÿÿóLooks like small lobsters. Moves quickly in water. Has two large claws. Be careful - they may pinch! This critter can live in high or medium quality water. Finding this macroinvertebrate means that the water has low to moderate pollution. Slide8.JPGN€ÿÿÿÿÿÿÿÿÿÿÿÿÍHas 6 hooked legs and very large eyes (take up most of its head). This critter can live in high or medium quality water. Finding this macroinvertebrate means that the water has low to moderate pollution. Slide9.JPGN€ÿÿÿÿÿÿÿÿÿÿÿÿÖ3 delicate, feathery, oar shaped extensions of tail. 6 thin, hooked legs. This critter can live in high or medium quality water. Finding this macroinvertebrate means that the water has low to moderate pollution. Slide10.JPGN€ÿÿÿÿÿÿÿÿÿÿÿÿþCaterpillar-like segmented body. Usually white but can be green or brown. Finger-like lobes at rear end of body. This critter can live in high or medium quality water. Finding this macroinvertebrate means that the water has low to moderate pollution. Slide11.JPGN€ÿÿÿÿÿÿÿÿÿÿÿÿ¸Hard outer shell. Two equal parts to shell. This critter can live in high or medium quality water. Finding this macroinvertebrate means that the water has low to moderate pollution. Slide12.JPGN€ ÿÿÿÿÿÿÿÿÿÿÿÿfWorm-like body with suction pads at end. This critter can live in high, middle and low quality water. Slide13.JPGN€ÿÿÿÿÿÿÿÿÿÿÿÿXLook like thin earthworms. This critter can live in high, middle and low quality water. Slide14.JPGN€ ÿÿÿÿÿÿÿÿÿÿÿÿ±Body looks like segmented worm with one leg in the front and one in the back on each side. Squirm quickly to move. This critter can live in high, middle and low quality water. Slide15.JPGN€ÿÿÿÿÿÿÿÿÿÿÿÿƒOne end of body appears swollen and has suction pad. Has black head. This critter can live in high, middle and low quality water. Slide16.JPGN€ ÿÿÿÿÿÿÿÿÿÿÿÿ¨Shell opens to the left when the snail is held so the apex is at the top and the opening is at the bottom. This critter can live in high, middle and low quality water. Slide17.JPGN€ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ CXDatablock"="&P¦+Q&ÿ@dPJ&.PŠ'/}ef/?&.Rf.?H v.Adn?À fn@ fnHJnÀ n.@&~