Thursday, October 26, 2006

10-26-06 grasshopper and cockroach- Phylum Arthropoda Subphylum Mandibulata Class Insecta



Tympanum - used for hearing

Phylum Arthropoda, Subphylum Mandibulata, Class Insecta



If you look at it closely, you can see the crop, proventriculus, gastric caecum, midgut, malpighian tubules, hindgut and even the uterus...

Phylum Arthropoda, Subphylum Mandibulata, Class Insecta

10-26 crayfish dissection- Phylum Arthropoda Subphylum Mandibulata Class Crustacea



Rudder



Carapace



Rostrum



Second swimmeret... can't seem to locate the first swimmeret



Gill cover



Anus and telson



Gills



Telson



Mandibular muscles (stuck on the shell of each side)
also visible are stomach, liver and gonads (bright yellow).



Heart



Gonads



Green Gland (two of them)


Esophagus


uhhh...looks like heart



nerve cord and stuff...

Remember, the crayfish dissection is Phylum Arthropoda, Subphylum Mandibulata, Class Crustacea

Slides from 10-26-06 Phylum Arthropoda















Phthirius pubis - pubic lice
Phylum Arthropoda, Subphylum Mandibulata, Class Insecta















Ixodes scopularis - deer tick
Phylum Arthropoda, Subphylum Chelicerata, Class Arachnida















Cyclops - sub p. mandibulata, class crustacea















Daphnia
sub p. mandibulata, class crustacea
















horseshoe crab - larvae stage
Phylum Arthropoda, Subphylum Chelicerata, Class Xiphosura

Saturday, October 21, 2006

lab 1 for exam 2- Mollusca and Annelida


Clam glochida
Phylum Mollusca, Class Pelecypoda


Nereis parapodium
Phylum Annelida, Class Polychaeta


Earthworm Intestinal Region
Phylum Annelida, Class Oligochaetac






















































Clam/mussel
mantle


Clam/mussel gonad, liver and stuff
Once you orient the clam so that the left shell is on top (the one open), you know that the mouth and foot will be to the left. You can orient based on the umbo (draw line down center through umbu, and short side is "front" which makes the shell you are looking at the left shell). Green is liver. gonads and gills are pretty obvious. Anterior adductor muscle will be to your left. Posterior adductor muscle will be to the right.


Phylum Annelida, Class Polychaeta




Phylum Annelida, Class Polychaeta




Phylum Annelida, Class Polychaeta




Phylum Annelida, Class Hirudinea (leeches)



Phylum Mollusca, Class Amphineura (Chitons- 8 pony plates)



Phylum Annelida, Class Oligochaeta





Phylum Annelida, Class Hirudinea (leeches)



Phylum Mollusca, Class Scaphapoda ("tooth shells"- shells actually look like tusks of an elephant)



Phylum Mollusca, Class Pelecypoda (Bivalves- like clams)



Phylum Mollusca, Class Amphineura (Chitons- 8 pony plates)



Phylum Mollusca, Class Pelecypoda (Bivalves- like clams)



Phylum Mollusca, Class Amphineura (Chitons- 8 pony plates)



Phylum Mollusca
Class Gastropoda (Coils, spirals, like snails- caused by torsion)


Phylum Mollusca
Class Gastopoda







Phylum Mollusca
Class Gastropoda (Coils, spirals, like snails- caused by torsion)




Phylum Mollusca
Class Cephelapoda (squid, nautilus. Have internal shell called a "pen". The coiled shell is of a nautilus which is like a squid but with this shell. Do not get this shell of the nautilus confused with the coiled shells of the Class Gastropoda)



Phylum Mollusca
Class Cephelapoda (squid, nautilus, cuttle fish.)



Phylum Mollusca
Class Cephelapoda (squid, nautilus.)



Phylum Mollusca
Class Cephelapoda (squid, nautilus, cuttle fish.)


Nautilus shell
Phylum Mollusca
Class Cephalapoda (do not get this coiled shell confused with the shells of Class Gastropoda)