DEGO (Median bulb) (Basal bulb). A. Tylenchid B. Oxyuroid C. Mermis D. Trichurid E. Ascaris.

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Presentation transcript:

DEGO (Median bulb) (Basal bulb)

A. Tylenchid B. Oxyuroid C. Mermis D. Trichurid E. Ascaris

Transverse Marking 1.Striae (e.g., sting nematode) 2.Annulation (e.g., lance nematode) 3.Segmentation (e.g., ring nematode) 4.Modification of transverse marking (e.g., root-knot nematode: perineal pattern cyst nematode: wall pattern)

Sting nematode :Striae Ring enamtode :Segmentation

Annulation Perineal pattern

Longitudinal marking 1.Longitudinal ridge and incisures 2. Alae - cuticular thickenings along body :Cervical alae (anteriorly) :Causal alae ( posteriorly) = Bursa 3. Aerolation -lateral line crossed by the striae

Longitudinal ridge Longitudinal incisure Cervical alae Causal alae Aerolation

Other cuticular marking 1. Cephalic papillae or setae :lip region, head sense organ 2. Amphids :Anteriorly located, paired laterally Various form(circular, spiral, cyathiform etc) 3. Phasmids :Posteriorly located, laterally located small pore like shaped * Bigger than phasmid – Scutella (plate like) 4. Spine, punctuation

Phasmids Scutella Punctuation Spine

Various shape of amphids

Outer labial papillae Amphids Inner labial papillaeILP Setae Dorsal Ventral Face view