Lab 4: Phylum nematoda, phylum annelida, phylum onycophora and phylum tardigrada

Phylum Nematoda (roundworms)

Class chromadorea

Class dorylaimea

Order Rhabdites

Order Rhabdites

Free living, Turbatrix aceti (vineger eel)

Ascaris lumbricoides

(Order ascaridida)

Nector americanus

(Order strongylida)

Wuchereria bancrofti

trinchinella spiralis

Ascaris lumbricoides

Acaris lumbricoides dissected mount

1) Intestine 2) Vagina 3) Uteri 4) Oviducts 5) Ovaries 6) Rectum

Ascaris x.s.

Phylum annelida (segmented worms)

Class polychaeta

Class clitellata

Class polychaeta

Clamworms (Nereis)

Nereis dorsal view

Nereis ventral view

Polychaete c.s.

Class clitellata/ oligochaeta

Order opisthopora, Earthworm

Order Hirudinea

Earthworm external anatomy

Earthworm internal anatomy

1) Mouth 2) Cerebral ganglion 3) Pharynx 4) Oesophagus 5) Aortic arches 6) Spermathecae 7) Seminal vesicles 8) Crop 9) Gizzard 10) Intestine 11) Clitellum 12) Nerve cord 13) Dorsal blood vessel 14) Anus

Oligochaete c.s.

Preserved leech

Peripatus

(Order Onycophora)

Peripatus

Peripatus

Tardigrade (water bear)