ECOL 170C1 Lecture Notes - Lecture 16: Cuttlefish, Monoplacophora, Zebra Mussel

• School: University of Arizona
• Department: Ecology & Evolutionary Biology
• Course: ECOL 170C1
• Professor: John Wiens

Document Summary

Molluscans: two major clades within bilateria, protostomia (protostomes) includes almost everything else, and the most important phyla are, arthropoda: insects, crustaceans, spiders and relatives, about 1. 2 million species, mollusca: snails, clams, octopi and relatives, about. Kitt peak, another only at rincon peak, etc: bivalvia (9,000, include clams, oysters, scallops, and mussels, clam: marine bivalve, spends its time partially buried in the sand in the ocean, but close to shore. Some claims are huge, and can weigh >400 pounds and live 500 years: oyster: marine bivalve, tends to be. 3 fou(cid:374)d i(cid:374) the (cid:862)i(cid:374)tertidal zo(cid:374)e(cid:863) (pla(cid:272)es that are submerged at high tide and exposed at low tide), attach themselves to rocks, Have tiny eyes: mussels: includes several families of both marine and freshwater bivalves (sessile), the. 297 freshwater mussel species, but 72% are in danger of extinction due to human impacts (e. g. dams) and the introduced zebra mussel. 23,000 feet: ecdysozoans: arthropods, roundworms (nematodes), and relatives.