1. NO RTW Objective: Agenda: Homework:
Monday, April 17th
NO RTW
Objective:
I will be able to review and prepare for the marine science final.
Agenda:
Marine Science Final Review Packet
Homework:
None 

2. Pg. 118 RTW: Which animal phylum do you think has the most species?
Tuesday, April 18th
Pg. 118 RTW: Which animal phylum do you think has the most species?
Objective:
I will be able to cite examples and explain the adaptations to the marine environment of the invertebrate phyla: Arthropoda.
Agenda:
Arthropoda Foldable
Arthropoda group be ready to present tomorrow!
Homework:
None 

3. Arthropod Foldable
Examples: insects, spiders, crabs, barnacles, copepods, shrimp and lobsters.
Class Crustacea : mostly marine arthropods
Cirripedia- barnacles
Copepoda- Copepods
Malacostraca- shrimp, lobster, crab
General Characteristics:
Gill breathing
Specialized appendages for feeding, walking, defense… (jointed appendages)
Larvae is planktonic
Grow via molting
Bilaterally Symmetric
Exoskeleton made of chitin hardened by CaCO3

4. Arthropod Foldable Diagrams: Reproduction: Sexual
Some will carry eggs attached to abdomen until they hatch.

5. Phylum Arthropoda
Class Crustacea

6. Largest phylum of animals w/ approx
One million known species

7. Includes: insects, spiders, crabs
Barnacles, shrimp, & lobsters

8. General characteristics
Bilaterally symmetric
Have jointed appendages (legs & mouth parts)
Exoskeleton made of chitin and hardened by CaCO3
Grow by molting

9. Molting:
Old exoskeleton is shed leaving the animal soft
The animal brings in water to expand itself
A new exoskeleton is secreted by specialized tissue

10. Exoskeleton provides protection, support, & flexibility
Also imposes limitations to grow & size

11. Class: Crustacea 30,000 species primarily marine Gill-breathing
16-20 segments
Open circulatory system
Specialized appendages for food gathering, walking, fighting, defense, etc.
Start out life as a planktonic larvae
Ex: lobsters, crayfish, shrimp, crabs, copepods, barnacles, etc.
Giant King Crab = largest crustacean (~12ft)
Heaviest is the lobsters (up to 48 lbs!!)

12. Have two pairs of antennae (one pair smaller than the other)
Small, planktonic crustaceans include copepods,
barnacles, isopods, krill

13. Barnacles Chitin exoskeleton & secretes CaCO3 shell.
Feathery feet for filter feeding plankton
Some attach to docks or boats and a few on whales
Must close up with an operculum during low tide to avoid desiccation (drying up).

15. Other larger crustaceans include shrimp, lobsters & crabs
Considered decapods (5 pairs of legs)
Body consists of cephalothorax (fused head & thorax) & abdomen

17. Crabs have a compact abdomen & a broad cephalothorax
Abdomen usually tucked under

19. Male
Female

20. Abdomen with eggs

21. Videos
Horseshoe Crab
Molting Horseshoe Crab
Mantis Shrimp

22. Lobsters
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Slipper lobster
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Spiny Lobster
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Lobster Life Cycle: Safari Montage

23. Giant Spider Crab

24. King and Coconut Crabs

25. No RTW: Arthropoda group be ready to present when the bell rings!
Wednesday, April 19th
No RTW: Arthropoda group be ready to present when the bell rings!
Objective:
I will be able to cite examples and explain the adaptations to the marine environment of the invertebrate phyla: Arthropoda.
Agenda:
Arthropoda Fish Food Presentation
Mollusca group be ready to present Friday!
Homework:
None 

26. Pg. 118 RTW: What is one interesting fact about Arthropoda?
Thursday, April 20th
Pg. 118 RTW: What is one interesting fact about Arthropoda?
Objective:
I will be able to cite examples and explain the adaptations to the marine environment of the invertebrate phyla: Mollusca.
Agenda:
Mollusca Foldable
Mollusca group be ready to present tomorrow!
Homework:
None 

27. Mollusca Foldable Examples: Class Gastropoda- Snails
Class Bivalvia- Clams
Class Cephalopoda- Octopuses, Squids
General Characteristics:
Most numerous marine group, very diverse.
Soft body covered in CaCO3 (bivalves & gastropods)
One way digestion
Some herbivores and some carnivores

28. Mollusca Foldable
Diagrams: (please label the class under your diagram)
Reproduction: External fertilization- bivalves, chitons, & some snails
Sperm & eggs are released into water
Internal fertilization-cephalopods & most snails
Cephalopods have modified arm (Hectocotylus) to transfer sperm to female

29. Phylum Mollusca

30. Includes these classes:
Snails-class Gastropoda
Clams-class Bivalvia
Octopuses, Squids-class Cephalopoda
There are more species of mollusks in the ocean than any other group
Soft body protected by a shell of calcium carbonate
Very diverse in body structures and habits

31. Mollusk Diversity

32. Biology Much more complex than Cnidarians or Sponges
Has a separate mouth and anus (1 way)
Has salivary and digestive glands
herbivores & carnivores (predators & filter feeders)
circulatory system transports nutrients and oxygen
Heart pumps blood to all tissues
Most have open circulatory system (leaky), cephalopods a closed circulatory system

33. Nervous system simple to complex Most have separate sexes
Some species are hermaphrodites
External fertilization- bivalves, chitons, & some snails
Sperm & eggs are released into water
Internal fertilization-cephalopods & most snails
Cephalopods have modified arm to transfer sperm to female

35. class Gastropoda Snails-”stomach foot” Largest group
Approx 90,000 species
Mostly marine
Body is coiled up inside shell
Shell sits on a ventral foot

37. Nudibranch
(sea slug-
no shell)
Tulip snail
(with shell)

38. Body Structure thin layer of tissue that produces the shell
muscular, used in locomotion
some are well developed & have eyes
area with small teeth used in scraping algae or other food from surfaces, made of chitin
hard plate used to close opening once head/foot retracts into shell
Gas exchange is through gills
Mantle
Foot
Head
Radula
Operculum

40. class Bivalvia Oysters (cement themselves to hard surface)
Clams (burrow)
Mussels (attach to rocks using byssal threads),
Body compressed between two shells
Very large source of food for humans and other marine animals.

41. class Cephalopoda-2 in to 30 ft
Cephalopods-most complex brain of all invertebrates
considered intelligent and capable of learning
Most cephalopods display color changes correlated to certain behaviors
Hectocotylus-Specialized arm transfers a spermatophore (packet of sperm)
After eggs hatch female usually dies

42. Blue-ringed Octopus (Hapalochlaena)
giant pacific octopus - Octopus dofleini

43. Giant Squid

44. Cephalopoda Camouflage
Octopus vs Crab
Cone Snail

45. No RTW: Mollusca group be ready to present when the bell rings!
Friday, April 21st
No RTW: Mollusca group be ready to present when the bell rings!
Objective:
I will be able to cite examples and explain the adaptations to the marine environment of the invertebrate phyla: Mollusca.
Agenda:
Mollusa Fish Food Presentation
Homework:
None :)