NEMATODE MORPHOLOGY

PLANT PARASITIC NEMATODE

SIZE AND SHAPE OF NEMATODES

MORPHOLOGY

• A nematode has:• Digestive organs• Reproductive

organs• Excretory

structures• Muscles• Nerves• Tough skin or

“Cuticle”

Difference b/w PPN & SN

ANTERIOR REGION

STYLET

cone

shaft

knobs

stylet

Median bulb

OESOPHAGEAL REGION

MALE REPRODUCTIVE SYSTEM

FEMALE REPRODUCTIVE SYSTEM

Uni-spiral amphid

NEMATODE ENFACE VIEW

Multi-spiral amphid

Multi-spiral amphid

Circular amphid

Slit like amphid

NEMATODE ENFACE VIEW

Pore like amphid

Amphid

Neopsilenchus

Amphid

Irantylenchus

Face view of Dolichodorus

Amphid

Perioral disc

Amphid

Rotylenchus

Belonolaimus head

Reduced lip

Amphid

Hemicycliophora

Deirid

Excretory pore

Irantylenchus

Phasmid of Scutellonema

Phasmid, Scutelonema brachyurum

Phasmid of Hoplolaimus

Phasmid

Lateral field, Meloidogyne hapla second stage larva

Lateral field

Ridges

Lines or incisures

Tail of Peltamigratus

Lateral field

Lance nematode, Hoplolaimus columbus

ANTERIOR REGION

Spicules and lateral field, Meloidogyne incognita

Epiptygma of Peltamigratus

Epiptygma

Moulting Belonolaimus longicaudatus