scholarly journals Disruptive Selection Maintains Variable Pheromone Blends in the Bark Beetle Ips pini

2011 ◽  
Vol 40 (6) ◽  
pp. 1530-1540 ◽  
Author(s):  
Alice M. Shumate ◽  
Stephen A. Teale ◽  
Bruce D. Ayres ◽  
Matthew P. Ayres
Keyword(s):  
Bark Beetle ◽  
Ips Pini ◽  
Disruptive Selection ◽  
Pheromone Blends

Responses of Ips pini (Say), Pityogenes knechteli Swaine and Associated Beetles (Coleoptera) to Host Monoterpenes in Stands of Lodgepole Pine

2003 ◽  
Vol 38 (4) ◽  
pp. 602-611 ◽  
Author(s):  
Daniel R. Miller ◽  
John H. Borden
Keyword(s):  
Bark Beetle ◽  
Bark Beetles ◽  
Mountain Pine Beetle ◽  
Lodgepole Pine ◽  
Behavioral Responses ◽  
Ips Pini ◽  
Host Volatiles ◽  
Pine Engraver ◽  
Pine Beetle

We conducted seven experiments in stands of mature lodgepole pine in southern British Columbia to elucidate the role of host volatiles in the semiochemical ecology of the pine engraver, Ips pini (Say) (Coleoptera: Scolytidae), with particular reference to the behavioral responses of predators and competing species of bark beetles. Our results demonstrated that the attraction of Ips pini and the bark beetle predators Lasconotus complex LeConte (Colydiidae), Thanasimus undatulus (Say) (Cleridae) and a Corticeus sp. (Tenebrionidae) were increased by 3-carene. In contrast, attraction of the bark beetle Pityogenes knechteli Swaine (Scolytidae) to ipsdienol was interrupted by 3-carene and α-pinene. Attraction of L. complex to ipsdienol was increased by γ-terpinene, a compound attractive to the mountain pine beetle, Dendroctonus ponderosae Hopkins (Scolytidae). Terpinolene interrupted the attraction of I. pini to ipsdienol.

The Bark Beetle Complex Associated with Lodgepole Pine Slash in Alberta: Part III—Notes on the Biologies of Several Predators with Special Reference to Enoclerus sphegeus Fab. (Coleoptera: Cleridae) and Two Species of Mites

1957 ◽  
Vol 89 (3) ◽  
pp. 111-120 ◽  
Author(s):  
R. W. Reid
Keyword(s):  
Special Reference ◽  
Bark Beetle ◽  
Lodgepole Pine ◽  
Ips Pini ◽  
Egg Predator ◽  
Ips Perroti ◽  
Enoclerus Sphegeus

The most important predators found with broods of Ips pini (Say) and Ips perroti Sw. belong to the orders Coleoptera, Diptera, Hemiptera, and Acarina.Among the Coleoptera, Enoclerus sphegeus Fab. was the most aggressive and responsible for the greatest predation. The small clerid, Thanasimus undulatus Say, was present in the area but rarely encountered. Dipterous predators included Loachea corticis Taylor, Oscinella sp. nr. magnipalpus Beck. and Medeterus modestus Van Duzee. A hemipterous egg predator, Anthocoris musculus Fall. was found occasionally within the main Ips galleries.

Assemblage of Hymenoptera arriving at logs colonized by Ips pini (Coleoptera: Curculionidae: Scolytinae) and its microbial symbionts in western Montana

2009 ◽  
Vol 141 (2) ◽  
pp. 172-199 ◽  
Author(s):  
Celia K. Boone ◽  
Diana L. Six ◽  
Steven J. Krauth ◽  
Kenneth F. Raffa
Keyword(s):  
Bark Beetle ◽  
Pinus Ponderosa ◽  
Ponderosa Pine ◽  
Bark Beetles ◽  
Host Plants ◽  
Ips Pini ◽  
Feeding Guilds ◽  
Forestry Practices ◽  
Nontarget Effects ◽  
Microbial Symbionts

AbstractColonization of a tree by bark beetles and their symbionts creates a new habitat for a diverse assemblage of arthropods, including competing herbivores, xylophages, fungivores, saprophages, predators, and parasitoids. Understanding these assemblages is important for evaluating nontarget effects of various management tactics and for subsequently evaluating how changes in climate, the presence of invasive species, and altered forestry practices and land-use tenure may affect biodiversity. We characterized the assemblage of hymenopterans attracted to logs of ponderosa pine (Pinus ponderosa C. Lawson (Pinaceae)) colonized by the bark beetle Ips pini (Say) and its microbial symbionts. In one experiment, the composition and relative abundances of species arriving at hosts colonized by I. pini, and possible sources of attraction, were determined. Treatments consisted of a log containing I. pini with its natural complement of microorganisms, a log alone, and a blank control. A second experiment was carried out to determine whether or not Hymenoptera were attracted to microbial symbionts of I. pini. Treatments consisted of a blank control, a log alone, a log containing I. pini with its natural complement of microorganisms, either Ophiostoma ips, Burkholderia sp., or Pichia scolyti, and a log inoculated with a combination of these three microorganisms. Over 2 years, 5163 Hymenoptera were captured, of which over 98% were parasitoids. Braconidae, Platygastridae, Encyrtidae, Pteromalidae, and Ichneumonidae were the most abundant. Seven known species of bark beetle parasitoids (all Pteromalidae) were captured. However, parasitoids of Diptera, Lepidoptera, Hymenoptera, and non-wood-boring Coleoptera were also common. Nineteen species showed preferential attraction to host plants infested with I. pini and its complement of microorganisms, host plants inoculated with I. pini microbial symbionts, or host plants alone. Interestingly, many of these species were parasitoids of phytophagous, fungivorous, and saprophytic insects rather than of bark beetles themselves. These results suggest that a diverse assemblage of natural enemies that attack various feeding guilds within a common habitat exploit common olfactory cues.

The Bark Beetle Complex Associated with Lodgepole Pine Slash in Alberta: Part II—Notes on the Biologies of Several Hymenopterous Parasites

1957 ◽  
Vol 89 (1) ◽  
pp. 5-8 ◽  
Author(s):  
R. W. Reid
Keyword(s):  
Bark Beetle ◽  
Lodgepole Pine ◽  
Ips Pini ◽  
Additional Information ◽  
Ips Perroti

Representatives of the families Braconidae and Pteromalidae were present in association with broods of Ips pini Say and Ips perroti Sw. The identifications and information on distribution and hosts were kindly supplied by O. Peck and W. R. M. Mason of the Systematic Entomology Unit in Ottawa. Additional information on hosts and distribution were obtained from Hymenoptera of America by Muesebeck, Krombein, Towns, et al. (1951).

Effectiveness of modified White's solution at removing ascomycetes associated with the bark beetle Ips pini

2003 ◽  
Vol 33 (4) ◽  
pp. 237-240 ◽  
Author(s):  
B. J. Kopper ◽  
K. D. Klepzig ◽  
K. F. Raffa
Keyword(s):  
Bark Beetle ◽  
Ips Pini

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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