Prodorylaimus

Members of the nematode genus Prodorylaimus Andrássy, 1969 have a relative short odontostyle with a linear odontophore. These are large free-living soil & aquatic nematodes (up to 5 mm in length) and are omnivorous, using a variety of food sources. They have a hollow spear that can pierce other organisms and suck out nutrients. Depending on environmental conditions and food availability, they can feed on algal filaments, protists, other nematodes and then, when their primary food sources are unavailable, switch to feeding on fungal hyphae and bacteria. They often have low reproduction rates and generally occur in stable habitats, rather than in newly established or disturbed habitats.

(Source: Global Soil Biodiversity Atlas|Chapter II – Diversity of soil organisms)

Prodorylaimus filiarum Andrássy, 1964

Prodorylaimus filiarum: anterior body part
Prodorylaimus filiarum: anterior body part

Prodorylaimus filiarum: posterior body part
Prodorylaimus filiarum: posterior body part

Prodorylaimus filiarum: slightly offset lip region with amphids opening and odontostyle, thin “double” guiding ring and linear odontophore
Prodorylaimus filiarum: slightly offset lip region with amphids opening and odontostyle, thin “double” guiding ring and linear odontophore

Prodorylaimus filiarum: pharynx posterior to its middle widened
Prodorylaimus filiarum: pharynx posterior to its middle widened
Prodorylaimus filiarum: pharynx base
Prodorylaimus filiarum: pharynx base
Prodorylaimus filiarum: vagina
Prodorylaimus filiarum: vagina
Prodorylaimus filiarum: vulva (partly) and smooth cuticle
Prodorylaimus filiarum: vulva (partly) and smooth cuticle
Prodorylaimus filiarum: anterior tail region with anal opening
Prodorylaimus filiarum: anterior tail region with anal opening

Prodorylaimus mas Loof, 1985

Prodorylaimus mas: anterior body part
Prodorylaimus mas: anterior body part

Prodorylaimus mas: midbody
Prodorylaimus mas: midbody

Prodorylaimus mas: posterior body part
Prodorylaimus mas: posterior body part

Prodorylaimus mas: slightly offset lip region with amphids opening and odontostyle, thin “double” guiding ring
Prodorylaimus mas: slightly offset lip region with amphids opening and odontostyle, thin “double” guiding ring

Prodorylaimus mas: linear odontophore
Prodorylaimus mas: linear odontophore

Prodorylaimus mas: pharynx base with cardia
Prodorylaimus mas: pharynx base with cardia

Prodorylaimus mas: anterior part of the intestine
Prodorylaimus mas: anterior part of the intestine

Prodorylaimus mas: cuticle
Prodorylaimus mas: cuticle

Prodorylaimus mas: intestine (dark part)
Prodorylaimus mas: intestine (dark part)

Prodorylaimus mas: transverse vulva with anterior part of the sclerotized
Prodorylaimus mas: transverse vulva with anterior part of the sclerotized

Prodorylaimus mas: vagina with sclerotized pieces near vulva and eggs
Prodorylaimus mas: vagina with sclerotized pieces near vulva and eggs

Prodorylaimus mas: anal opening
Prodorylaimus mas: anal opening

Prodorylaimus mas: protoplasmatic core at about 40% of the filiform tail length
Prodorylaimus mas: protoplasmatic core at about 40% of the filiform tail length
Prodorylaimus mas: : tail terminus
Prodorylaimus mas: : tail terminus

Prodorylaimus uliginosus Loof, 1985

Prodorylaimus uliginosus: anterior body part
Prodorylaimus uliginosus: anterior body part

Prodorylaimus uliginosus: posterior body part
Prodorylaimus uliginosus: posterior body part

Prodorylaimus uliginosus: slightly offset lip region with amphids opening and odontostyle, thin guiding ring and linear odontophore
Prodorylaimus uliginosus: slightly offset lip region with amphids opening and odontostyle, thin guiding ring and linear odontophore

Prodorylaimus uliginosus: pharynx base
Prodorylaimus uliginosus: pharynx base
Prodorylaimus uliginosus: transverse vulva and anterior part of the sclerotized vagina
Prodorylaimus uliginosus: transverse vulva and anterior part of the sclerotized vagina
Prodorylaimus uliginosus: cuticle near anterior tail region
Prodorylaimus uliginosus: cuticle near anterior tail region
Prodorylaimus uliginosus: anal opening (ventral view)
Prodorylaimus uliginosus: anal opening (ventral view)

(Click on the pictures for an enlargement, © Laboratory of Nematology/Pictures: Hanny van Megen)