1. Annelids through Arthropoda

2. Phylum Annelida “ Segmented Worms” Ringed appearance indicates internal segmentation Variety of environments – marine, FW & terrestrial forms Sessile fan worms Free-living marine and soil-dwelling worms Parasitic, blood-sucking leeches Locomotion Circular and longitudinal muscles work against the fluid-filled coelom for movement

3. More Worms Annelida worms stand apart from other simple worms. Nephrida (water- regulating tubules) as part of excretory system. Metamerism is the division of the body into repeating blocks or segments

4. Classes of Annelida Class Polychaeta Have numerous slender bristles (setae) on parapodia (for locomotion and respiration) Ex. Clamworm (Nereis) Class Oligochaeta Fewer setae, clitellum Ex. Earthworms (Lumbricus) Class Hirudinea Lack setae, with suckers and clitellum Ex. Leeches (Hirud0) http://www.freewebs.com/invertebratezoology/Earthworm1.jpghttp://seagrant.gso.uri.edu/research/georges_bank/Images/Species%2 0picts/Used/Nereis_zonata%20large.jpg Nereis Lumbricus http://www.abc.net.au/reslib/200704/r138958_475481.jpg Hirudo

5. Polychaetas Many live in the marine environment Tubeworms-live on coral reefs Bristle worms which sting and burn when touched live in the coral or beneath artificial structures. Sponge worms live on sponges Fireworms live on the surface of fire corals

6. Crustaceans (Lobsters,Crabs, and Shrimp)

7. Phylum Arthropoda Majority are terrestrial insects. Characteristics of arthropods –Segmented bodies –Jointed legs –Chitinous excoskeleton Step Up Fool !

8. Just the Facts…. Crustaceans belong to the Phylum Arthropoda (jointed feet).Crustaceans belong to the Phylum Arthropoda (jointed feet). All Arthropods have jointed appendages.All Arthropods have jointed appendages. All Arthropods have an exoskeleton.All Arthropods have an exoskeleton.

9. The Exoskeleton Is made of a tough fibrous material called chitin.Is made of a tough fibrous material called chitin. This gives the skeleton strength and flexibility.This gives the skeleton strength and flexibility. There are several pairs (5 or more) of jointed appendages (movable arms and legs).There are several pairs (5 or more) of jointed appendages (movable arms and legs).

10. Molting Molting is when the exoskeleton is shed as the organism outgrows it.Molting is when the exoskeleton is shed as the organism outgrows it.

11. Other Characteristics Bilateral symmetry Bilateral symmetry Two main body segments- Two main body segments-  Cephalothorax  Abdomen They filter feed, scavenge, or are predatory They filter feed, scavenge, or are predatory Use appendages for food getting and movement Use appendages for food getting and movement Found throughout the oceans of the world Found throughout the oceans of the world Are an important food source for other marine organisms Are an important food source for other marine organisms They reproduce sexually, fertilize externally They reproduce sexually, fertilize externally Have gills to breathe Have gills to breathe

12. Phylum Arthropoda 3 Subphylums /superclass: –Chelicerata Four pairs of legs Lack antennae Cephalothorax Class Xiphosura (Merostomata) – horseshoe crabs Class Arachnida – spiders, scorpions, ticks, mites http://aquaria-blog.com/wp-content/uploads/2009/06/horseshoecrab.jpg http://www.maxwaugh.com/images/cr05/spider2.jpg Golden Orb Weaver Spider Nephila clavipes Limulus polyphemus

13. Phylum Arthropoda –Subphylum / superclass Crustacea 3 to 5 pairs of legs 2 pairs of antennae Class Crustacea – crabs, shrimp, lobsters –Subphylum / superclass Uniramia 3 pairs of legs 3 distinct body regions with/without wings Class Insecta/Hexapodas (honeybees) Class Diplopoda (millipedes) Class Chilopoda (centipedes) http://home.hetnet.nl/~faassema/photos/Callinectessapidusweb.jpg Callinectes sapidus http://i74.photobucket.com/albums/i247/rmshelley/pictures%20June%2013/Chicobolus.jpg

14. Cool Crustacean’s http://video.nationalgeographic.com/video/worlds- deadliest/deadliest-mantis-shrimp Mantis shrimp Gribbles Pea Crabs Skeleton Shrimp Buoy Barnacles Whale Lice Pistol Shrimp Pram Bug

15. Mantis Shrimp Packs a powerful punch Scientists study their strength They are swift, tough and effective death machines of the sea! Mantis shrimp are only about four inches long but pound for pound are one of the strongest animals in the world. They use clubs that are more like elbows than fists to punch their prey -- with the force of a bullet shot from a 22 caliber gun. This incredible force is important for hunting food -- easily breaking the shells of prey like crabs and clams.

16. The Mantis Shrimp vs. Octopus when they release their club, it accelerates at over 50 miles per hour with a force of over 330 pounds -- up to 2500 times the shrimp's own weight.

17. The Mantis Shrimp vs. The Cuttlefish

18. Gribbles Isopods of the family Limnoriidae are an example, having evolved to feed exclusively on submerged wood They’re more commonly known as “gribbles,” an adorable name for something that could once doom a vessel. An enzyme produced during their feeding process is exceptionally effective in turning wood into simple sugars—a process that could provide an efficient source of renewable biofuel if we could learn to replicate it.

19. Pea Crab saw one while eating an oyster. critters live in the gills of oysters, and sometimes will come out to play when your half shell is sitting on a plate are small soft-bodied crabs that live in bivalves such as oysters and mussels. Aside from gill damage, an oyster can grow healthily while hosting a pea crab, but it's health will diminish when there is less food in the water because the pea crab will feed first

20. Skeleton Shrimp thin, ghostly form With their hooked legs, they anchor themselves firmly to coral, sponges, seaweed, and an assortment of other surfaces. The females inject males with venom and consume them shortly after mating

21. Buoy Barnacles The buoy barnacle is unique in that it is the only one that can make its own float or attachment It floats head downwards, and even though it can attach itself to timber or other floating debris, it can also create its own float which looks like a polystyrene foam

22. Whale Lice is a commensal crustacean of the family Cyamidae. Despite the name, they are not true lice (which are insects), but rather are related to the better-known skeleton shrimp, most species of which are found in shallower waters. Whale lice are external parasites, found in skin lesions, genital folds, nostrils and eyes of marine mammals of the order Cetacea. These include not only whales but also dolphins and porpoises.

23. Pram Bug Pram bug Phronima sp. is a nasty deep-sea amphipod that carves its home from the guts of an unfortunate salp. It’s small, less than one inch, but like most amphipods, its ugly and ferocious. After consuming the innards of the pelagic jelly, Phronima crawls inside it like a new translucent mobile home, and there she lays her eggs Pram bugs usually inhabit the deep-sea, but they have been known to invade Scotland. Cause to worry? “Yes," you might say, "run for your lives! They’re the evil inspiration for HR Giger’s Aliens, with four compound eyes that scan 270 degrees, so there’s no escape. Scotland’s doooomed.

24. Deuterostomes 2 nd embryonic opening is the mouth

25. Phylum Echinodermata “Spiny skin” Spines arise from endoskeleton composed of calcium carbonate plates Most possess defensive spines on outer skin Marine, benthic organisms Endoskeleton supports body wall Adults radially symmetrical; larvae usually bilaterally symmetrical Water vascular system -- unique to this phylum Use tube feet for locomotion, gas exchange or food gathering

26. Sea star Anatomy Usually five arms radiate around central disk Mouth oriented downward (oral side) Water vascular system –Tube feet on bottom Locomotion

27. Classes of Echinoderms 1.Class Crinoidea –Ex. Sea lily 2.Class Asteroidea –Ex. Sea stars 3.Class Ophiuroidea –Ex. Brittle stars 4.Class Echinoidea –Ex. Sand dollars & Sea urchins 5.Class Holothuroidea –Ex. Sea cucumber 1 4 2 5 3