scholarly journals Variations in growth and virulence of Leptographium wingfieldii Morelet, a fungus associated with the bark beetle Tomicus piniperda L.

2004 ◽  
Vol 61 (1) ◽  
pp. 45-53 ◽  
Author(s):  
Fran�ois Lieutier ◽  
Annie Yart ◽  
Hui Ye ◽  
Daniel Sauvard ◽  
Val�rie Gallois
Keyword(s):  
Bark Beetle ◽  
Tomicus Piniperda

scholarly journals Complex postglacial history of the temperate bark beetle Tomicus piniperda L. (Coleoptera, Scolytinae)

Heredity ◽  
2009 ◽  
Vol 103 (3) ◽  
pp. 238-247 ◽  
Author(s):  
A Horn ◽  
C Stauffer ◽  
F Lieutier ◽  
C Kerdelhué
Keyword(s):  
Bark Beetle ◽  
Tomicus Piniperda ◽  
Postglacial History ◽  
History Of

Prothallonema tomici n. sp. (Tylenchida: Sphaerulariidae) parasitising Tomicus piniperda (Coleoptera: Curculionidae: Scolytinae) in Bulgaria

Nematology ◽  
2011 ◽  
Vol 13 (6) ◽  
pp. 741-746 ◽  
Author(s):  
Daniela Pilarska ◽  
Danail Takov ◽  
Sevdan Nedelchev
Keyword(s):  
New Species ◽  
Bark Beetle ◽  
Reproductive System ◽  
Body Cavity ◽  
The Body ◽  
Tomicus Piniperda ◽  
Anterior Position ◽  
Two Generations ◽  
Short Body

AbstractProthallonema tomici n. sp. (Tylenchida: Sphaerulariidae) is described as a parasite of the bark beetle Tomicus piniperda (Linnaeus) (Coleoptera: Curculionidae: Scolytidae). The new species is characterised by the relatively short body (0.3-0.5 mm) and short prolapsed uterus ((0.16-0.44) × (0.065-0.15) mm), relatively anterior position of the vulva (83.8-85.5%), stylet with fine asymmetrical basal knobs, hemizonid and hemizonion, four incisures, subterminal phasmids and tail terminus always curved dorsad. The entomoparasitic and mycetophagous generation were observed in the body cavity of T. piniperda. Comparing the two generations of J4 showed that the mycetophagous generation had a longer and more robust body, shorter pharynx and tail, longer reproductive system and vulva located further posteriorly. It can be concluded that, in the haemocoel, the entomoparasitic generation can develop through all stages whilst the mycetophagous generation develops to the J4 and then dies.

Attack Densities of Tomicus pintiperda and Ips pini (Coleoptera: Scolytidae) on Scotch Pine Logs in Michigan in Relation to Felling Date

1995 ◽  
Vol 30 (1) ◽  
pp. 18-28 ◽  
Author(s):  
Robert A. Haack ◽  
Robert K. Lawrence
Keyword(s):  
Bark Beetle ◽  
Bark Beetles ◽  
Ips Pini ◽  
The United States ◽  
Tomicus Piniperda ◽  
Great Lakes Region ◽  
Scotch Pine ◽  
Canadian Province ◽  
Pine Engraver ◽  
Pine Shoot Beetle

Established populations of an exotic bark beetle, the larger pine shoot beetle [Tomicus piniperda (L.)], were first reported in Ohio in July 1992. Subsequent surveys through July 1994 have found T. piniperda in six states in the United States and in one Canadian Province in the Great Lakes region. One-meter-long trunk sections were cut from Scotch pine (Pinus sylvestris L.) trees felled from February through July 1993 in a forested site in southern Michigan, laid horizontally, allowed to undergo natural attack by bark beetles and associates, and later dissected. In southern Michigan in 1993, T. piniperda initiated spring flight in late March; the pine engraver [Ips pini (Say)], a native pine bark beetle, initiated spring flight about one month later in late April. Tomicus piniperda attacks (galleries) were found in logs cut during February through May. Attack densities of T. piniperda were highest in February-cut logs, and declined with subsequent felling dates. The highest T. piniperda attack density recorded for an entire log section was 263 attacks/m2 of bark area on one of the February-cut logs. Ips pini attack densities tended to increase with later felling dates. When I. pini attacked logs that had already been colonized by T. piniperda, I. pini galleries were mostly found on the upper log surface. When I. pini attacked logs with few or no T. piniperda, I. pini galleries were found on all log surfaces. By initiating spring flight several weeks before I. pini, T. piniperda is able to colonize much of the susceptible pine material and thereby may lower I. pini populations.

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