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Showing 1 to 11 of 11 for “"Scolytidae"”.
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Southern pine beetle, Dendroctonus frontalis Zimmermann (Coleoptera: Scolytidae): quantitative analysis of chiral semiochemicals
Semiochemicals released from logs infested by southern pine beetle (SPB), <i>Dendroctonus frontalis</i>, from a total of eight infestations located in Texas, South Carolina, and Virginia were collected four to eight days after initial attack. The quantities and chiralities of most semiochemicals, …
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The impact of Tomicobia tibialis (Hymenoptera : pteromalidae) on the pine engraver, Ips pini (Coleoptera : scolytidae)
Augmentative release of biological control agents against pest insects is a management tool that has been largely ignored in forestry due to a lack of understanding and means of producing potential agents. I investigated the effects of Tomicobia tibialis Ashmead on the reproductive potential of …
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Management decision-making tools for mountain pine beetle (Dendroctonus ponderosae) (Coleoptera: Scolytidae) populations in lodgepole pine (Pinus contorta) stands
To prevent the buildup of epidemic level mountain pine beetle populations, conditions of the stand environment they inhabit must be altered. Silvicultural treatment is the most effective means for doing this. Preventative treatments work best when applied while mountain pine beetle populations are …
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Fluctuacion poblacional de la broca del fruto del cafeto hypothenemus hampei Ferr. (Coleoptera: Scolytidae) en tres localidades de la VI region, Nicaragua
Durante el período de los meses de junio 1989 a febrero 1990, se estudió la fluctuación poblacional de la broca del fruto del cafeto Hypothenemus hampei Ferr. en alturas de 950,1000 y 11SO m.s.n.m en la Región VI de Nicaragua. La temperatura en las localidades del estudio oscila entre 18 y 212 C. …
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Biology and host finding of predaceous hister beetles (Coleoptera: Histeridae) associated with Ips spp. (Coleoptera: Scolytidae) in loblolly pine (Pinus taeda L.)
… with Ips engraver beetles (Coleoptera: Scolytidae) in Louisiana were Platysoma attenuata LeConte, Pla. cylindrica (Paykull), Pla. parallelum (Say), and Plegaderus transversus (Say). Seasonal abundance of histerids in flight traps coincided with Ips spp. activity in the area. Histerid …
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Bark beetles associated with killed Virginia pine (Pinus virginiana Mill.) in Patrick County, Virginia
… 99.65 percent of the insects in the families Scolytidae, Cerambycidae, Curculionidae, and Buprestidae. The remaining 0.35 percent were collected from nontreated control trees. The dominant insect species were analyzed regarding seasonal abundance and specificity in selecting suitable host …
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Kirjanpainaja Lahdessa : Kuinka tuho näkyy?
Kaarnakuoriaiset (Coleoptera: Scolytidae), joihin kirjanpainaja (Ips typographus L.) kuuluu, ovat Suomessa merkittäviä metsien tuhohyönteisiä. Kirjanpainajan on helpompi iskeytyä ja lisääntyä onnistuneesti, jos metsäkuusi (Picea abies (L.) Karst) heikentyy iän tai tuhon seurauksena. Tässä …
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Dinámica poblacional de descortezadores de pino en dos municipios del departamento de Nueva Segovia
… especies de Dendroctonus eI ps de la familia Scolytidae. En 1999 D. frontalisataco los municipios de Jalapa, Jícaro, San Fernando, Mozonte, Dipilto, Somoto, Cusmapa y Esteli. La afectación causada por D. frontalis fue de 32,359.41 Ha., que significó la pérdida del 50% del bosque equivalente a …
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Insectos descortezadores y fauna insectil asociada a los pinos en dos municipios del departamento de Nueva Segovia
… poblacional d e insectos de la familia Scolytidae. Las poblaciones de insectos de esta familia fueron estadísticamente similares en ambos municipios. También, se describió la fluctuación poblacional de insectos del Orden Coleóptera y se les identificó hasta el nivel de familia. El número …