BIL 160 Lecture Notes - Lecture 8: Rotifer, Protostome, Lophotrochozoa

• School: University of Miami
• Department: Biology
• Course: BIL 160
• Professor: Krempels Dana

Document Summary

Bilateria: protostomia: protostomes are characterized by, mouth derived from blastopore, bilateral symmetry, triploblasty, most species exhibit, determinate cleavage, schizocoely, 2 major monophyletic clades within protostomia, lophotrochozoa, ecdysozoa. Protostomia: lophotrochozoa: major taxa, syndermata (rotiferas and acanthocephalans, lophophorates (brachiopods, phoronids, bryzoans, nemertea (ribbon worms, mollusca (clams, snails, octopus, squid, annelida (segmented worms) Lophotrochozoa: the lophophorates: morphologically linked by the unique lophophore feeding apparatus, 3 clades, phoronida- horseshoe worms (12 species, bryozoa (=ectoprocta)- the moss animals (5000 species, brachiopoda- the lamp shells (350 species) Mullusca: polyplacophora- the chitons (600 species: all marine (living in the oceans, all benthic (living on the bottom substrates, such as rocks, coral, mud etc. , characterized by 8 separate dorsal plates instead of a single shell. Intertidal species have an extremely muscular foot that keeps them anchored in spite of wave action: of all mollusks, the chitons are the most physically similar to h. a. m.