Name: Group:
Annelida – examples diversity 15 Polychaeta (1); Clitellata: leeches (Hirudinea) (2-3) and (Oligochaeta) (4-5).
Magnification:
1. seamouse Aphrodite aculeata
2. Earthworm – Eisenia foetida
4. leech Helobdella 5. fish leech Piscicola geometra
3. Tubifex sp.
What are the two types of food of the leeches?
Are earthworms hermaphroditic or gonochoristic? Does their life cycle contain larval stage?
What are the parapodia and what is their function?
Annelida are often a part of parasite life cycles and act as paratenic hosts, what does it mean?
Notes:
Name: Group:
Annelida
Clitellata – Oligochaeta 16 earthworm– Lumbricus sp. – trasverse section
Magnification:
m epidermis
1000
circular muscle
longitudinal muscle
coelom
ventral neural band
typhlosole
Trochophore
What is the function of typhlosolis? vascular plexus
What type of neural system is present in Annelida?
What is the trochophore? excretory pore
Notes: Scheme of the metanephridia: nephrostomventral – multicel. side ciliated funnel Name: Group:
Mollusca
snails and slugs – Gastropoda – Prosobranchiata 17
Macroscopic. limpet – Patella sp. true conch – Strombus sp.
cowry – Cypraea sp.
abalone – Haliotis sp.
cone snail – Conus sp.
river snail – Viviparus sp.
Ampullaria sp. Murex sp.
Which species is the one most used as a food?
Which species can be dangerous to people?
Which species can be found in Czech republic?
Notes:
Name: Group:
Mollusca Gastropoda – Pulmonata 18
umbiculus Macroscopic.
lateral view dorsal (apical) view basal (umbicular) view edible snail – Helix pomatia – morphology of the shell growth layers
Edible snail - Helix pomatia
Cepaea sp.
Ram‘s horn snail
Planorbarius sp. Lymnaea sp.
Is the shell of Helix pomatia coiled to the right (dextral) or left hand (sinistral)?
Which are the freshwater species?
Are there groups of pulmonate snails with shell reducition?
Notes: Name: Group:
Mollusca Gastropoda – Pulmonata 19 edible snail – Helix pomatia – internal organs
Zvětšení:Flask.
What is the love dart and how is it used by snails?
Is this snail hermaphrodite or gonochorist? glochidium
What type of developement do molluscs go through?
Notes: veliger Name: Group:
Mollusca Bivalvia
20 river mussel – Unio sp. – morphology of the shell Macroscopic.
scallop – Pecten sp. Anodonta sp.
pen shell – Pinna sp.
Solen sp. cockle – Cardium sp. blue mussel – Mytilus edulis
Which species are used as a food?
Which species live in freshwater?
How is done the tight clasp of bivalve shell?
Notes:
Name: Group:
Mollusca Cephalopoda common cuttlefish – Sepia officinalis 21
„cuttlebone“
Sketch in the fin.
Sketch in the funnel. What is function of the funnel?
Notes:
Name: Group:
Mollusca Cephalopoda 22 Octopus sp. ; European squid – Loligo vulgaris
Sketch in the fin of the squid.
How many appendages does the squid have? What is their function?
Are octopuses hermaphrodits or gonochorists?
Notes: