BIOL 197L – LAB #8 – INVERTEBRATE DIVERSITY AND ANATOMY II

Which phyla did we study in lab?

Phylum ArthropodaSubphylum Crustacea

Phylum Nematoda

Phylum ArthropodaClass insecta

Phylum Echinodermata

What phylum does this organism belong to?What other classification can be used to

describe it?

ArthropodaSubphylum Crustacea

Genus Procambrus

Identify:Which one of these organisms is a female; which is a male?

Note the swimmerets

MaleFemale

Identify:

Identify:

Antenna

Identify:

AntennaEye

Identify:

AntennaEye

Head

Identify:

AntennaEye

Head Thorax

Identify:

AntennaEye

Head Thorax

Carapace

Identify:

AntennaEye

Head Thorax

Carapace

Abdomen

Identify:

AntennaEye

Head Thorax

Carapace

Abdomen

Swimmerets

Identify:

AntennaEye

Head Thorax

Carapace

Abdomen

SwimmeretsTail

Identify:

AntennaEye

Head Thorax

Carapace

Abdomen

SwimmeretsTail

Walking legs

Identify:

The gills

Identify:

The heart

The holes in the crawfish’s heart are known as:

Ostia

Identify:

The stomach

Identify:StructurePurpose

A green glandExcretion of wastes

What phylum does this organism belong to?What other classifications can be used to

describe this organism?

ArthropodaClass Insecta

Order OrthopteraGenus Romalea

Identify:

Identify:

Head

Identify:

Head Thorax

Identify:

Head Thorax Abdomen

Identify:

Head Thorax Abdomen

Fore wing

Identify:

Head Thorax Abdomen

Fore wing

Hind wing

Identify:

Head Thorax Abdomen

Fore wing

Hind wing

Spiracles

Identify:

Head Thorax Abdomen

Fore wing

Hind wing

SpiraclesMouthparts

Identify:

Head Thorax Abdomen

Fore wing

Hind wing

SpiraclesMouthparts

Compound eye

Identify:

Head Thorax Abdomen

Fore wing

Hind wing

SpiraclesMouthparts

Compound eye

Ocelli

Identify:

Head Thorax Abdomen

Fore wing

Hind wing

SpiraclesMouthparts

Compound eye

Ocelli

Antenna

The type of sound production that is produced by grasshoppers is:

Stridulation

Identify:StructurePurpose

Fore wingsThey serve as a covering for the hind wings when at rest

The fore wings are borne on the mesothorax

Identify:

Hind wingsNote the wing veins

What is the tracheae?

The air tubes or gas exchange system

Identify:StructurePurpose

SpiraclesThe site of oxygen diffusion (the spiracles open up into the system of tracheal

tubules. These two body parts constitute the respiratory system of the grasshopper.)

Identify:StructurePurpose

Tympanic membraneServe as an organ of hearing

What type of coelom does Romalea have?

Hemocoel

What type of circulation does the grasshopper have?

Open circulation

Identify:StructurePurpose

CropSite of food storage

Note that the esophagus is before the Crop, if something is pinned there, it could be the esophagus

Identify:StructurePurpose

Gastric cecaSecrete digestive enzyme and aid in food absorption

Identify:StructurePurpose

StomachWhere digestion takes place

Identify:StructurePurpose

Malphigian tubulesThese tubules remove wastes and salts from the blood

The Malphigian tubules may also look like #9:

Identify:Structure

Intestines

Identify:Structure

Rectum

Identify:

Ventral nerve cord

Another image for examination:

Identify the male and female Romalea.

Identify:StructurePurpose

MaleFemale

Identify:

MaleFemale

Ovipositor (the Site of egg dispersal)

What phylum does this organism belong to?

Nematoda

Which genera did we study that are in the phylum Nematoda?

Turbatrix (the vinegar eel)

Trichinella

Ascaris lumbricoides

Identify:PhylumGenus

NematodaTrichinella

Encysted in the muscle tissue of the pig

Identify:PhylumGenus

Female or male?Does this organism cause a disease? If yes, what is the disease called?

NematodaTrichinella

FemaleYes, trichinosis

Nematodes (AKA round worms) are commonly dioecious and they use a hardened structure known as a spicule during copulation.

What phylum does organism belong to?What genus does this organism belong to?

EchinodermataAsterias

What are two unique features of the Echinodermata?

Calcareous endoskeletonsWater vascular systems

Their larvae are bilaterally symmetrical, while the adults exhibit radial symmetry

Identify:StructurePupose

MadreporiteThe intake of water into the water vascular system

Located on the aboral surface

Spines

Identify:

Identify:

Mouth

Identify:

Mouth

Identify:

Mouth

Ambulacral grooveTube feet project from here

Identify:

Digestive gland