Pine Wood Nematode

Pine Wood Nematode

pinewood nematodes

Nematodes are minute round worms. These pinewood nematodes were extracted out of pine wood.

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Higher magnification of pine wood nematode Bursaphelenchus xylophilus.

Long horned beetle

Long horned beetles like these Monochamas species are vectors of the pinewood nematode.

Maturation feed on twig

Beetles maturation feed on small diameter pine branches. Nematodes that are carried by the beetle enter the wounds.

oviposition sites on pine

After feeding, female beeltes make oviposition niches on the bark and lay an egg in the nitch. Black circles show the oviposition niches. Nematodes an also move into the wood when niches are made and eggs laid.

Long horned beetle larvae

Larvae of the beetle. The larvae feed on the wood and just before pupation nematodes in the wood move up into the developing beetle. As the beetle emerges, it carries nematodes with it.