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Dr. Brian K. Penney Goulet 2320 603 641-7149 bpenney@anselm.edu Brian K. Penney 's web page

Animal diversity II Lab Guide Week of February 22, 2010. Reading: LM 4:96-105; C: 374-383
Updated: 1/18/10

I) LECTURE STATUS

Students will have had an overview of the metazoan characters, but will hear about higher invertebrates (molluscs upward) on Thursday.

You can find the lecture notes on the phyla covered in these lectures here (Molluscs, Annelids and Arthropods), and here (Echinoderms and basal chordates)

II) CONCEPTS (bold words they must know for quiz)

The major goal is for them to explore and see the metazoan characters we have talked about, as well as learn about clam anatomy in more detail.

1) Body plan characters:

a) most of these are the same for all these phyla: Tissue layers and fates; Coelom location and role; Completeness of digestive system

b) characters that vary are: Segmentation; Symmetry; (Blastopore fate; Protostome/Deuterostome membership; these are only addressed in lecture)

2) Phyla and major characters; relate these to how each organism makes a living.

3) For each phylum, students must also examine/sketch organisms from the side table with diversity specimens. The sketches they need by the end of class are: clam dissection, crayfish, sea star (water vascular system with tube feet), lancelet cross section (notochord, nerve cord, gill bars)

III) LAB SCHEDULE

Introduction (10 min)

1. MOLLUSCA (60 min): Students do clam dissection

2. ARTHROPODA (15 min); NO TERMITE GUT FAUNA

3. ECHINODERMATA (10 min)

4. CHORDATA (15 min): NO FROG DISSECTION

QUIZ (10 min)

1. Mollusca (From: Custom Lab Manual, Exercise 6)

   Students learn how molluscs are constructed, see diversity and practice dissection skills.

   Characters: coelom, body regions (Head, Foot, Visceral mass, Mantle and shell, Gill, Radula). Groups: gastropods, bivalves, cephalopods.

   Required Equipment: Mollusca

   Type	#	Per	Item	Section	Notes
   Sp	1	Pair	preserved clams for dissection	Mollusca
   E	1	Class	clam knife	Mollusca
   E	1	Pair	dissecting trays	Mollusca
   Sp	1	Class	preserved squid	Mollusca
   Sp	1	Class	preserved snail	Mollusca

   So=Solution, S=Slide, Sp=Specimen, L=Living, E=Equipment

   ---

2. Insects, Arachnids, Crustaceans, etc. (Arthropoda) (From: Custom Lab Manual, Exercise 7)

   Students learn how arthropods are constructed, see diversity

   Characters: segmentation and modification; subphyla (crustaceans, insects, arachnids); metamorphosis in insects

   Required Equipment: Insects, Arachnids, Crustaceans, etc. (Arthropoda)

   Type	#	Per	Item	Section	Notes
   Sp	1	Class	preserved crayfish for examination	Insects, Arachnids, Crustaceans, etc. (Arthropoda)	1 dissected per class as demo?
   Sp	1	Class	preserved spiders	Insects, Arachnids, Crustaceans, etc. (Arthropoda)
   Sp	1	Class	preserved horseshoe crab	Insects, Arachnids, Crustaceans, etc. (Arthropoda)
   Sp	1	Class	preserved insect/life cycle	Insects, Arachnids, Crustaceans, etc. (Arthropoda)
   Sp	1	Class	preserved millipede	Insects, Arachnids, Crustaceans, etc. (Arthropoda)

   So=Solution, S=Slide, Sp=Specimen, L=Living, E=Equipment

   ---

3. Sea stars and urchins, etc. (Echinodermata) (From: Custom Lab Manual, Exercise 8)

   Students learn how echinoderms are constructed, see diversity

   Characters: pentaradial symmetry, water vascular system, coelom modification

   Required Equipment: Sea stars and urchins, etc. (Echinodermata)

   Type	#	Per	Item	Section	Notes
   Sp	1	Class	preserved starfish	Sea stars and urchins, etc. (Echinodermata)	1 dissected as demo?
   Sp	1	Class	preserved sea urchin	Sea stars and urchins, etc. (Echinodermata)
   Sp	1	Class	preserved sea cucumber	Sea stars and urchins, etc. (Echinodermata)

   So=Solution, S=Slide, Sp=Specimen, L=Living, E=Equipment

   ---

4. Vertebrates and other Chordata (From: Custom Lab Manual, Exercise 9)

   Students learn how chordates are constructed, see diversity

   Characters: segmentation, pharynx, dorsal hollow nerve cord, notochord

   Cephalochordata (Amphioxus) cross section diagram is to the right.

   
   Required Equipment: Vertebrates and other Chordata

   Type	#	Per	Item	Section	Notes
   Sp	1	Class	preserved tunicates	Vertebrates and other Chordata
   Sp	1	Class	preserved Amphioxus	Vertebrates and other Chordata
   S	1	Pair	Amphioxus XS	Vertebrates and other Chordata	241
   E	1	Class	model of nerve cord	Vertebrates and other Chordata
   E	1	Pair	Compound microscopes	Vertebrates and other Chordata

   So=Solution, S=Slide, Sp=Specimen, L=Living, E=Equipment

   ---

A printable syllabus, with course dates, required materials, grading and other policies can be found here.

A one page printable version of the schedule can be found here.

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