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What are the divisions of organization?. Kingdom. Phylum. Class. Order. Family. Genus. Species. Animal Phyla of the Oceans. Phylum Porifera. Benthic, suspension feeders Asymmetrical Sexual and asexual reproduction No tissues or organs Osculum - large opening(s) at top
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What are the divisions of organization? Kingdom Phylum Class Order Family Genus Species
Phylum Porifera • Benthic, suspension feeders • Asymmetrical • Sexual and asexual reproduction • No tissues or organs • Osculum- large opening(s) at top • Pores for incurrent water • Collar cells (choanocytes)
Ex: Sponges Coralline sponge Encrusting sponges Tubullar sponge
Wonderful world of sponges • http://www.youtube.com/watch?v=BW05vMziy2o • Sponge filtering • http://www.youtube.com/watch?v=T7E1rq7zHLc
Benthic or pelagic Predators, passive suspension feeders Extra and intracellular Radial symmetry Oral and aboral surface Two stages Polyp – attached to bottom (sessile) Medusa – free swimming Nematocysts - stinging cells on tentacles Phylum Cnidaria Polyp Medusa
Nematocysts firing • http://www.youtube.com/watch?v=6zJiBc_N1Zk&feature=related
Colonial Polyp stage dominant Class Hydrozoa Portugese Man of War Freshwater Jelly Hydra
Class Scyphozoa • Individual organisms • Medusa stage dominant • Jellyfish Bell
Killer cnidarian • Box jellyfish • http://www.youtube.com/watch?v=Ws5hImeonEA
Anemone Class Anthozoa • Sessile • Solitary or colonial polyp • Nematocyst to sting and capture prey Coral Sea fan
Anemones • And clownfish • http://www.youtube.com/watch?v=JVNW3mO8hCE • Reproducing • http://www.youtube.com/watch?v=sPwi2QcLKao&feature=PlayList&p=68713C56DE93FD18&index=14&playnext=2&playnext_from=PL
Phylum Ctenophora • No stinging cells • Colloblasts that stick to prey • Pelagic predators • Radial symmetry • Ciliary combs Comb jelly
Comb jelly • Lobed comb jelly • http://www.youtube.com/watch?v=bW3sqB7RTIc
Phylum Platyhelminthes • Flatworms • Benthic parasites • Simple brain • Bilateral symmetry • True organs and organ systems Fluke Turbellarian Tapeworm
Flatworms • Planarian • http://www.youtube.com/watch?v=w0QzSYQGsnA • Fencing • http://www.youtube.com/watch?v=wn3xluIRh1Y
Phylum Nemertea • Benthic predators • Bilateral symmetry • Complete digestive tract • Circulatory system • Proboscis – long tube to entangle prey Ribbon worm
Proboscis • http://www.youtube.com/watch?v=qT2x9YuowqU
Phylum Nematoda • Benthic predators • Bilateral symmetry • Common in sediment • Parasite (sushi) Round worm
Nom nom • http://www.youtube.com/watch?v=X1YiIiPUQR8
Phylum Annelida • Segmented worms • Coelom • Muscles (longitudinal/circular) • Closed circulatory system • Complete digestive tract
Class Polychaeta • Each segment has parapodia with sharp bristles, setae Beard worm Tube worm Sandworm
Clam worm • http://www.youtube.com/watch?v=LdHzRNdz2HU
Class Oligiochaetes • Found in mud and sand • Lack parapodia Black worm
Class Hirundinea • Suckers at each end • No parapodia Leeches
Phylum Sipuncula • Soft, unsegmented • Mouth contains small lobes or tentacles • Retractable mouth Peanut worm
Peanut worm • http://www.youtube.com/watch?v=O5eaYp6Jw_g
Phylum Echiura • Non-retractable proboscis • Benthic predators Spoon worm
Fat innkeeper worm • http://www.youtube.com/watch?v=0PZwkx-YSbs&playnext=1&list=PL3D098C5C1CC08E6B&feature=results_video
Phylum Mollusca • Calcium carbonate shell • Internal or external • Separate mouth and anus • “Rasping tongue” - radula • Mantle – secretes shell
“stomach foot” Torsion development Anus over head Class Gastropoda Abalone Snail Nudibranch Cowrie
Killer cone snail • http://www.youtube.com/watch?v=zcBmMPJrrKk
Class Bivalva • Bivalve named for number of shells • No eyes or distinct head • Siphons (feed/breathe) • Byssal threads • Umbo – oldest part Clam Scallop Oyster Mussel
Fouling • http://www.youtube.com/watch?v=609ChAyR3yM
“head-footed” Bilateral symmetry Ink sac Most intelligent invertebrates Class Cephalopoda Octopus Cuttlefish Nautilius Squid
Color changing • http://videos.howstuffworks.com/discovery/29084-the-ultimate-guide-octopus-color-changing-cuttlefish-video.htm • Walks on land • http://www.youtube.com/watch?v=FjQr3lRACPIm
Class Polyplacophora • All marine • 8 overlapping shells chiton
Class Monoplacophora • Only known as fossils until 1952 • Deep water • Similar to segmented worms Monoplacophoran
Class Scaphopoda • Deep water • Tentacles with adhesive tips Tusk shells
Phylum Arthropoda • Most dominant animals on Earth • Segmented, bilaterally symmetric • Exoskeleton (chitin) • molts • Jointed appendages • Well developed • sensory system • nervous system • circulatory system