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Phylum: Porifera Sponge Loose assemblage of cells with canals; silica-based spicules provide support Omnivorous, removing organic particles from water http://o.quizlet.com/i/hz0sFmg500GWfME13YYT3A.jpg Phylum: Cnidaria Class: Hydrozoa Order: Hydroida Family: Hydridae Genus: Hydra Quiet waters Predaceous via stinging nematocyst cells http://o.quizlet.com/i/AC-eyaZp8w1ED3gMct04mQ.jpg Phylum: Platyhelminthes Class: Turbellaria Flatworms Scavengers, arrow head type body. Capable of regeneration. Two eyespots at head. http://o.quizlet.com/i/kAjOj21kD6Qsr0gEyvfQLA.jpg Phylum: Gastrotricha Scavengers, Two tail appendages, rounded head. Ciliated http://o.quizlet.com/i/7vipMdUiI_HAUjnL0WULPA.jpg Phylum: Annelida Class: Oligochaeta Scavengers, detritus, etc Note range of size: like familiar earthworm, or much smaller and thinner but still seen easily by eye or dissecting scope (lower middle), or much smaller requiring fairly high magnification. Note also range of setae length: long and obvious in relation to worm size (upper right), or small and inconspicuous (other two) http://o.quizlet.com/i/qtkb9Xn6MXVKWz_dBaL5jw.jpg Phylum: Annelida Class: Hirudinea Leeches Most are detritivores, some are blood suckers Modern medicinal use: control swelling due to fluid build-up at site of reattachment of severed fingers, etc. http://o.quizlet.com/i/HjU-AvZdx-wPfXAyMHKW9w.jpg Phylum: Nematoda Individual species tend to be specialized for a particular type of feeding (algae, detritus, predation); can be described collectively as omnivorous. Lives everywhere, thought to cover everything. Small and wormlike http://o.quizlet.com/i/C5gSfkCSrgLvX6iqcGiYBw.jpg Phylum: Nematomorpha Horsehair Worm Quiet to moderately flowing water, as well as other places where standing water is usually present—cattle drinking troughs, shower drains, etc Adults do not feed, larvae are parasitic on terrestrial insects such as crickets and grasshoppers http://o.quizlet.com/i/9FqeICnRhdnyuuohSW2szg.jpg Phylum: Tardigrada Water Bears Shallow, quiet water, often in interstitial spaces of shore, damp moss away from bodies of water Omnivorous http://o.quizlet.com/i/U9k39xq-ZCkPrFaDMWpzAw.jpg Phylum: Arthropoda Class: Crustacea Order: Amphipoda Laterally flattened Quiet to moderately-flowing water Omnivorous. Free swimming as opposed to crawling http://o.quizlet.com/i/CGTvsdHRjyP1n408MCeyKA.jpg Phylum: Arthropoda Class: Crustacea Order: Isopoda Dorsal-ventrally flattened Quiet to moderately-flowing water Scavenger. Crawls for movement http://o.quizlet.com/i/2TTuP6GktPWn6xeUqhXYCA.jpg Phylum: Arthropoda Class: Crustacea Order: Ostracoda Small, clam-like Near bottom or swimming slightly above Scavenger http://o.quizlet.com/i/ca-dnZ1cjQjAVo_HeAe5Ww.jpg Phylum: Arthropoda Class: Insecta Order: Coleoptera Family: Haliplidae Crawling Water Beetle Small, a bit lady-bug like Often in algal mats, or very shallow water near shore in or above detritus, feeding primarily on algae, detritus = scavenger http://o.quizlet.com/i/OWrJTYWyKwWx9HTA1lYieQ.jpg Phylum: Arthropoda Class: Insecta Order: Coleoptera Family: Hydrophilidae Water Scavenger Beetle Shiny black beetles, frequently at surface where they may hang for a while, then descend. Like many other adult aquatic insects, they carry air under the wings, but they "refill" at the "shoulder" area (not at rear end), so they hang as depicted to left on slide. When swimming, none of the legs move in a coordinated "rowing" manner; seem to be all moving at once on their own. Also: typically have a silvery sheen on underside from air trapped by small hairs; distinct "keel" present on ventral side. Omnivorous http://o.quizlet.com/i/1QJLA-6urW5yT1Iixelzew.jpg Phylum: Arthropoda Class: Insecta Order: Coleoptera Family: Dytiscidae Predaceous Diving Beetle The ones we saw were small and brownish. Key characteristics: third pair of legs set distinctly farther back than first two pairs; swims using rear legs in a coordinated rowing motion. Predator. http://o.quizlet.com/i/jHCjMhAik7b52IXT3yH6cw.jpg Phylum: Arthropoda Class: Insecta Order: Hemiptera Family: Notonectidae Backswimmer Unusual habit of maintaining upside down orientation (ventral side up), when hanging at surface or swimming. Dives frequently. Predaceous, with piercing beak Note countershading reversal consistent with behavior: dorsal side, which is oriented downward, is whitish to blend in with light above; ventral side, oriented upward, is brown without silvery sheen found on ventral surface of some aquatic insects http://o.quizlet.com/i/ROXHbrjaCGdASU3CxdF7tg.jpg Phylum: Arthropoda Class: Insecta Order: Hemiptera Family: Naucoridae Crawling Water Bug Shallow water, weeds, near shore, often near surface but swimming deeper, may stay submerged for extended periods Predaceous, short piercing, sucking beak. Note short, stocky first legs http://o.quizlet.com/i/kBAQ-lM_KCNSSMRkGlj8Jw.jpg Phylum: Arthropoda Class: Insecta Order: Hemiptera Family: Belostomatidae Giant Water Bug Shallow water, weeds, near shore, often near surface but swimming deeper, may stay submerged for extended periods Predaceous Note piercing, sucking beak. Much Larger http://o.quizlet.com/i/2wJrVY64wiNoBvIP4GjMkA.jpg Phylum: Arthropoda Class: Insecta Order: Hemiptera Family: Nepidae Water Scorpion Thin body, long legs, long breathing tube. Shallow, weedy areas. Predaceous. Kind of looks like stick bug http://o.quizlet.com/i/UBi0uIeeWuL6hpUyS8kS3g.jpg Phylum: Arthropoda Class: Insecta Order: Hemiptera Family: Gerridae Water strider Swims on surface Predaceous on small insects, etc that fall on water http://o.quizlet.com/i/pkqhQTmSRsh8HrqaVk0U0Q.jpg Phylum: Arthropoda Class: Insecta Order: Megaloptera Family: Corydalidae Dobsonfly Hellgrammite Larva known as Hellgrammite Streams and ponds. Predaceous. Two hooked intimidating mandibles. 2 large wings http://o.quizlet.com/i/MgYtNK7tRnTNToxD7aRmrg.jpg Phylum: Arthropoda Class: Insecta Order: Diptera Family: Chaoboridae Genus: Chaoborus Phantom Midge Clear, with conspicuous air bladders. Larva is aquatic, adult leaves water. Ponds and lakes. Benthic or semi-benthic in deeper waters during day; planktonic near surface at night Predaceous http://o.quizlet.com/i/czh2I-z4n7jLHKOkcCX0vQ.jpg Phylum: Arthropoda Class: Insecta Order: Diptera Family: Chironomidae Non-biting Midges All habitats: Lakes, ponds, streams, etc. Larva is aquatic, adult leaves water Omnivorous Note small prolegs under head of larva Some contain hemoglobin = red color http://o.quizlet.com/i/dFPJ4eKRCuVgZ3iwAh2D2A.jpg Phylum: Arthropoda Class: Insecta Order: Diptera Family: Culicidae Mosquito Larva is aquatic, adult leaves water. Larva typically hang at surface Distinguished by wide thoracic region Omnivorous on small particles. Adults very annoying (females suck blood) http://o.quizlet.com/i/Oxd-qbk0GSet63iVaFXR9w.jpg Phylum: Arthropoda Class: Insecta Order: Odonata Suborder: Anisoptera Dragonfly Larva are aquatic, adults leave water. Quieter waters—near shore in ponds, lakes; slow areas of streams. Note mouth part used to capture prey Adult at rest has wings extended laterally (compare to damselfly). Predaceous. http://o.quizlet.com/i/3ChAr9wKjKw_GHdcWxOYwA.jpg Phylum: Arthropoda Class: Insecta Order: Odonata Suborder: Zygoptera Damselfly Larvae are aquatic, adult leaves water Quieter waters Note three tail appendages—which are relatively short and flattened laterally (see upper right photo)—compare to mayfly, which also has three tail appendages. Note adult at rest has wings folded over body (compare to dragonfly). Predaceous http://o.quizlet.com/i/XEqlHlfo_liyEzJ-zKvnkg.jpg Phylum: Arthropoda Class: Insecta Order: Trichoptera Caddisfy Larvae are aquatic, adult leaves water. Common in unpolluted streams Many build a case, of various forms Feeding varies with species but overall = omnivorous http://o.quizlet.com/i/uuphgCgOqAhmM_GjLakQSg.jpg Phylum: Arthropoda Class: Insecta Order: Ephemeroptera Mayfly Larva is aquatic, adult leaves water. Common in non-polluted streams. Note three tail appendages, which are long and thin (compare to damselfly). Omnivorous http://o.quizlet.com/i/IbtVt9ytW6Oc5JdyxlON7Q.jpg Phylum: Arthropoda Class: Insecta Order: Plecoptera Stonefly Larva is aquatic, adult leaves water. Common in undisturbed streams. Some are primarily carnivorous, but collectively = omnivorous http://o.quizlet.com/i/EtnLaZ9MKDk73RXhNCa6eg.jpg Phylum: Arthropoda Class: Arachnida Order: Hydracarina Water Mite Scavenger. Small looks like ticks. 8 legs. http://o.quizlet.com/i/RyyPg2lMHa7adKWJYjaGpA.jpg Phylum: Mollusca Class: Gastropoda Order: Pulmonata Family: Planorbidae Snails with a flattened spiral Quiet to moderately-flowing water. Omnivorous http://o.quizlet.com/i/OSh2rUJMz5aapfCOx5n87w.jpg Phylum: Mollusca Class: Gastropoda Order: Pulmonata Family: Lymnaeidae Snails with dextral spiral. Quiet to moderately-flowing water. Omnivorous http://o.quizlet.com/i/oLXyJCJ-KT_Mt38cfDuAKw.jpg Phylum: Mollusca Class: Gastropoda Order: Pulmonata Family: Physidae Snails with sinistral spiral. Quiet to moderately-flowing water. Omnivorous http://o.quizlet.com/i/0AWHi8g9ZqFJGAAYLcMhdw.jpg Phylum: Mollusca Class: Bivalvia Order: Unionoida Family: Sphaeriidae Fingernail clam Small, in streams and lakes. Filter-feeder = omnivorous. Tiny Clams http://o.quizlet.com/i/1h7IH22eGeZIi1-sAU-Htw.jpg Phylum: Mollusca Class: Bivalvia Order: Unionoida Family: Unionidae Mussel often large, formerly typical of large river systems. Filter feeder = omnivorous. Once used for button industry. http://o.quizlet.com/i/A_9Ffu67xEjmXPGpYoTZrw.jpg