Supplement to Lab Topic 17: Animal Diversity I

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àPlease observe and draw all displayed specimensß

(keeping in mind that traditionally introductory biology labs require

memorization of specimens for identification at a later date).

Map of Stations

[Front of Room]

1A, 1B, 1C	2A, 2B, 2C	3A, 3B, 3C	4A, 4B, 4C	5A, 5B, 5C
6A, 6B, 6C	7A, 7B, 7C	8A, 8B, 8C	9A, 9B, 9C	10A, 10B, 10C
11A, 11B, 11C	12A, 12B, 12C	13A, 13B, 13C	14A, 14B, 14C	15A, 15B, 15C
16A, 16B, 16C	17A, 17B, 17C	18A, 18B, 18C	19A, 19B, 19C	20A, 20B, 20C

[Back of Room]

Boxes in above table refer to desks.

Materials should be arranged in the order presented in your lab text.

Please let us know if there is a discrepancy or other problems.

Please be aware that you don’t necessary have to begin at station 1.

Please pay attention to suggested microscope magnifications (below)

(too-high magnification can be as misleading as too-low magnification).

Specimen List

Page	Sect.	Section Title	Stat.	Specimen	State	Container	Scope	Comments
449	17.1.1	Phylum Porifera	1A	“Generic” sponges (not radiata!)	Preserved	Syracuse watch glass	Dissecting	Dissect and draw sufficiently to be able to identify from drawing; you can do your dissections at any table, just be sure to bring a dissection scope to the table
449	17.1.2	Same as above	1C	Gratia [sic?] near median l.s. ???	Slide	None	Compound	Draw; use low power (40x = 4x objective) on scope
449	17.1.3	Same as above	6	Various sponges	Preserved	None	None or various	Observe diversity; do not draw
451	17.2	Phylum Cnidaria	2A	Hydra l.s. 30-6052 (Z665)	Slide	None	Comound	Draw; use 100x (= 10x objective) power; note the number of cell layers
451	17.2	Same as above	2C	Hydra	Living	Syracuse watch glass	Dissecting	Follow directions in text
451	17.2	Same as above	7	Coral polyps (class Anthozoa)	Skeletons	None	Dissecting or none	Observe diversity; do not draw
451	17.2	Same as above	12A	Various jellies (class Scyphozoa)	Preserved	None	None	Observe diversity; do not draw
451	17.2	Same as above	12C	Anemones (class Anthophyta)	Preserved	None	None	Observe diversity; do not draw
451	17.2	Same as above	12B	Comb jelly (phylum Ctenophora)	Preserved	None	None	Observe; do not draw
454	17.3	Phylum Platyhelminthes	3A	Planarian	Living	Syracuse watch glass	Dissecting	Follow directions in text
454	17.3.4	Same as above	3C	Planaria plain and digestive tract w.m. Z915	Slide	None	Compound	Follow directions in text; use 40x power
454	17.3.5	Same as above	8A	Planarian c.s. Z925	Slide	None	Compound	Follow directions in text; use 100x power; Prep-person: we will need fresh liver for the worms
454	17.3	Same as above	8C	Various flatworms	Preserved	None	None	Observe diversity; do not draw
457	17.4	Phylum Nematoda	4	Ascaris	Preserved	Dissecting pan	None	Follow directions in text; you can do your dissections at any table
457	17.4	Same as above	9A	Ascaris lumbricoides female c.s. Z1030	Slide	None	Compound	Follow directions in text; use 40x power
457	17.4	Same as above	9B	Ascaris lumbricoides male c.s. Z1025	Slide	None	Compound	Follow directions in text; use 40x (?) power
457	17.4	Same as above	14	Various nematodes	Preserved	None	None	Observe diversity; do not draw
---	---	Phylum Rotifera	19	Rotifers	Living (or slide)	Concave slide (or none)	Compound	Observe living if possible; may be very cool; Lab setup person: Bring scope over from micro
461	17.5.A	Phylum Annelida	5A	Clamworm	Preserved	Dissecting pan	None	Follow directions in text; you can do your dissections at any table
461	17.5.B	Same as above	5C	Earthworm	Preserved	Dissecting pan	Dissecting	Follow directions in text; you can do your dissections at any table
461	17.5.B.2	Same as above	10A	Turtox Earthworm x.s.	Slide	None	Dissecting	Follow directions in text
461	17.5.B	Same as above	10C	Leech w.m. Z1200	None	None	Dissecting	Observe; do not draw
461	17.5.B	Same as above	15	Various Annalids	Preserved	None	None	Observe diversity; do not draw

Choice of containers:

· Concave slide: Use a concave slide when a normal slide will crush the specimen (e.g., Volvox)

· Dish (observe in): Many specimens will need to be removed from their containers to observe; an appropriate dish will be supplied for pouring the specimen into; please use a dish for this purpose only if you are instructed to (Laboratory prep person: please supply dishes and label specimens that should or should not be observed in dishes)

· Dissection pan: Any dissections will be done in a dissection pan; you will obtain specimens for dissections from stations then bring those specimens, in a dissection an, back to your desk; if the specimen is presented to you in a dissection pan, then that specimen should be observed at the station but not extensively dissection (i.e., poking and otherwise manipulating is OK, but cutting, etc., is not)

· Petri dish: Normally a petri dish will be employed if that is what the specimen is supplied in

· Slide (microscope): Use a slide when the specimen is relative small and will be observed using a compound scope

· No container: Some items are suffiently large or are already mounted such that a container is not necessary

Choice of microscopes:

· Compound microscope: Use for observing relatively small specimens

· Dissection (stereoscopic) microscope: Use for observing the fine structure of relatively large specimens

· Phase-contrast microscope: Use for observing especially living bacteria

· No microscope: Some items are sufficiently large or its fine structure sufficiently inaccessible that we will not employ microscopic observation