| Image |
Descriptor |
Description |
Photographer |
| 0660050 |
Adult(s) |
Bursaphelenchus xylophilus in an axial resin canal of Pinus densiflora. Black and whitte image |
Y. Mamiya |
| 2131015 |
Adult(s) |
The head of a female |
Jijing Song and Juan Shi |
| 2131025 |
Adult(s) |
The tail of a female |
Jijing Song and Juan Shi |
| 2131026 |
Adult(s) |
The head of a male |
Jijing Song and Juan Shi |
| 2131027 |
Adult(s) |
Tail of a male |
Jijing Song and Juan Shi |
| 3948025 |
Damage |
Tree mortality caused by pinewood nematode |
William M. Ciesla |
| 4387002 |
Damage |
In Japan and other Asian countries, the nematode causes pine wilt. The slide shows a dying pine in Japan. |
L.D. Dwinell |
| 1406270 |
Damage |
|
USDA Forest Service - North Central Research Station Archive |
| 1406271 |
Damage |
|
USDA Forest Service - North Central Research Station Archive |
| 1406272 |
Damage |
|
USDA Forest Service - North Central Research Station Archive |
| 1406274 |
Damage |
|
USDA Forest Service - North Central Research Station Archive |
| 1406275 |
Damage |
|
USDA Forest Service - North Central Research Station Archive |
| 1406276 |
Damage |
|
USDA Forest Service - North Central Research Station Archive |
| 1406277 |
Damage |
|
USDA Forest Service - North Central Research Station Archive |
| 0162055 |
Damage |
Scattered trees killed in Japan |
K. Venn |
| 0162056 |
Damage |
Pine tree in Japan killed |
European and Mediterranean Plant Protection Organization Archive |
| 0177003 |
Damage |
Mortality in Japan |
INRA-Antibes Archive |
| 1406279 |
Damage |
|
USDA Forest Service - North Central Research Station Archive |
| 1442032 |
Damage |
showing epidemic of pine wilt caused by nematode |
USDA Forest Service - Rocky Mountain Region Archive |
| 1442034 |
Damage |
Close-up of pine wilt; 1 year after death of tree |
USDA Forest Service - Rocky Mountain Region Archive |
| 1442035 |
Damage |
Stump of Australian Pine infected; showing bark stain fungus. |
USDA Forest Service - Rocky Mountain Region Archive |
| 1470133 |
Damage |
dead tree |
A. Steven Munson |
| 4387009 |
Feature(s) |
The most common mode of transmission of the nematode, however, is when the adult female sawyer ovipositions in recently felled logs and dead or dying conifers, particularly pines. This is secondary transmission and the nematode is a secondary associate. Slide shows oviposition pits made in bark by sawyer. |
L.D. Dwinell |
| 4387010 |
Feature(s) |
As a secondary associate, the nematode is mycophagous and feeds on the fungi in the wood, including bluestain fungi transmitted by engraver and other bark beetles. |
L.D. Dwinell |
| 1470130 |
Feature(s) |
vulva flap of female nematode |
A. Steven Munson |
| 1470131 |
Feature(s) |
spicule of male nematode |
A. Steven Munson |
| 1442033 |
Feature(s) |
Lateral view of the male of the pinewood nematode Showing pointed tail and Spicula |
USDA Forest Service - Rocky Mountain Region Archive |
| 4387003 |
Feature(s) |
Showing head under microscope |
L.D. Dwinell |
| 4387004 |
Feature(s) |
Gravid female |
L.D. Dwinell |
| 4387005 |
Feature(s) |
Tale of male showing characteristic spicule. |
L.D. Dwinell |
| 2131022 |
Feature(s) |
Ilex purpurea growed from the pine stump caused by PWN |
Juan Shi |
| 2131023 |
Feature(s) |
Bamboo growing around a dead stump of masson pine killed by PWN. |
Juan Shi |
| 2131024 |
Feature(s) |
Bamboo growing from dead stump, killed by PWN |
Juan Shi |
| 4387007 |
Feature(s) |
The dauerlarvae (transmission stage) of the nematode invade the callow adult through the thoracic spiracles and are held in quiescent state only in the tracheae. |
L.D. Dwinell |
| 2131020 |
Feature(s) |
The regeneration of young masson pine forest in epidemic regions of PWN. |
Juan Shi |
| 1470132 |
Infestation |
pine stump; blue stain fungus also present |
A. Steven Munson |
| 4387001 |
Monitoring |
The primary impact of the pinewood nematode in North America is on trade to European Union(EU) and other countries. Slide shows pine chips being off loaded in Sweden. This was the last shipment of pine chips from North America to the EU. |
L.D. Dwinell |
| 4387008 |
|
The nematode may be transmitted to a susceptible host when the adult feed on pine shoots. This is termed "primary transmission" and may result in pine wilt. |
L.D. Dwinell |
| 4387006 |
|
The nematode is vectored by species of Monochamus (a.k.a. sawyers or longhorned beetles). |
L.D. Dwinell |
| 2131021 |
Symptoms |
|
Juan Shi |
| 2131018 |
Symptoms |
Pure Masson pine forest invaded by PWN in 1996 |
Juan Shi |
| 2131019 |
Symptoms |
The regeneration of young masson pine forest in epidemic regions of PWN |
Juan Shi |
| 1406278 |
Symptoms |
Austrian pine is brown, red pine is green |
USDA Forest Service - North Central Research Station Archive |
| 5335007 |
Symptoms |
|
Robert Lambe |
