common flatworms on rocks in Chico Creek & in local temporary ponds Tapeworms Intestinal parasites Flukes Internal parasites, variety of sites: lungs, mouth cavity, liver, blood Rotifera Abundant in fresh water plankton Nematoda Parasites of almost all other living things, also many free-living in water and soil Mollusca second largest phylum 100,000 known species Bivalvia (clams, oysters, mussels) Abundant fresh water and marine benthos from pinhead size to 500 lb. Gastropoda (snails, slugs, welks, abalone, etc.) Abundant fresh water, marine, and terrestrial bisexual, some forms mating strings first is female, last male Cephalopoda Common in marine, include largest (giant squid up to 60 ft) and largest brained invertebrates Annelida segmented worms Branchiobdellids Ecto-commensals of crayfish Oligochaetes (earth worms) Freshwater and soil very important in soil formation;
(largest brained invertebrates Annelida; segmented; worms) (last male Cephalopoda Common in marine; include; largest (giant squid up to 60 ft) and largest brained invertebrates Annelida segmented worms) (giant; squid; up to 60 ft)
largest brained invertebrates Annelida last male Cephalopoda Common in marine giant
segmented include squid
worms
largest (giant squid up to 60 ft) and largest brained invertebrates Annelida segmented worms
up to 60 ft