02086nas a2200193   4500008004100000020001400041245012700055210006900182260000900251300001000260490000600270520137300276653002701649100002301676700002001699700002001719700001801739856013501757       2007                        eng d  a1585-855300aTemperature-dependent effects on mutualistic, antagonistic, and commensalistic interactions among insects, fungi and mites0 aTemperaturedependent effects on mutualistic antagonistic and com  c2007  a47-560 v83 aThe relative abundance and nature of associations between symbiotic species can be affected by abiotic conditions with consequences for population dynamics. We investigated the effects of temperature on the community of mites and fungi associated with the southern pine beetle, Dendroctonus frontalis, an important pest of pine forests in the southern United States. First, we determined whether the growth rates of mutualistic and antagonistic fungi associated with D. frontalis differed in their responses to temperature. Second, we tested the effects of temperature on the abundance of, and interactions among, fungi, mites and beetles within D. frontalis-infested trees. Fungi differed in their growth responses to temperature, resulting in changes in fungal-beetle associations. Mite species associated with D. frontalis also differed in their responses to temperature, resulting in different mite communities associated with bark beetle progeny. The effects of temperature on beetle reproduction could not be assessed because of high wood borer density, but inter-relations among surviving beetles, mites and fungi were altered by temperature. Results support the hypothesis that temperature can produce direct and indirect effects on the web of mutualistic and antagonistic relationships within the community of D. frontalis and their symbiotic mites and fungi.10aDendroctonus frontalis1 aHofstetter, R., W.1 aDempsey, T., D.1 aKlepzig, K., D.1 aAyres, M., P.  uhttps://weevil.myspecies.info/temperature-dependent-effects-mutualistic-antagonistic-and-commensalistic-interactions-among-insects02769nas a2200289   4500008004500000020001400045245014200059210006900201260001300270300001000283490000700293520176800300653002902068653002702097653002802124653002402152653001402176653001702190653001302207100002002220700002102240700002302261700002102284700002002305700001902325856013502344       2008                        Engldsh    a0046-225X00aInfluence of temperature on spring flight initiation for southwestern ponderosa pine bark beetles (Coleoptera: Curculionidae, Scolytinae)0 aInfluence of temperature on spring flight initiation for southwe  cFebruary  a57-690 v373 aDetermination of temperature requirements for many economically important insects is a cornerstone of pest management. For bark beetles (Coleoptera: Curculionidae, Scolytinae), this information can facilitate timing of management strategies. Our goals were to determine temperature predictors for flight initiation of three species of Ips bark beetles, five species of Dendroctonus bark beetles, and two genera of bark beetle predators, Enoclerus spp. (Coleoptera: Cleridae) and Temnochila chlorodia (Mannerheim) (Coleoptera: Ostomidae), in ponderosa pine forests of northcentral Arizona. We quantified beetle flight activity using data loggers and pheromone-baited funnel traps at 18 sites over 4 yr. Ambient air temperature was monitored using temperature data loggers located in close proximity to funnel traps. We analyzed degree-day accumulation and differences between minimum, average, and maximum ambient temperature for the week before and week of first beetle capture to calculate flight temperature thresholds. Degree-day accumulation was not a good predictor for initiation of beetle flight. For all species analyzed other than D. adjunctus Blandford, beetles were captured in traps only when springtime temperatures exceeded 15.0[degree]C. D. adjunctus was collected when maximum temperatures reached only 14.5[degree]C. Once initial flights had begun, beetles were often captured when maximum ambient air temperatures were below initial threshold temperatures. Maximum and average air temperatures were a better predictor for beetle flight initiation than minimum temperature. We establish a temperature range for effective monitoring of bark beetles and their predators, and we discuss the implications of our results under climate change scenarios10aDendroctonus brevicornis10aDendroctonus frontalis10aDendroctonus ponderosae10aDendroctonus valens10aEnoclerus10aIps lecontei10aIps pini1 aGaylord, M., L.1 aWilliams, K., K.1 aHofstetter, R., W.1 aMcMillin, J., D.1 aDegomez, T., E.1 aWagner, M., R.  uhttps://weevil.myspecies.info/influence-temperature-spring-flight-initiation-southwestern-ponderosa-pine-bark-beetles-coleoptera-c02203nas a2200193   4500008004100000020001400041245017100055210006900226260000800295300001400303490000800317520146200325653001701787653000801804100002001812700002301832700001901855856013501874       2010                        eng d  a0022-049300aImpacts of Silvicultural Thinning Treatments on Beetle Trap Captures and Tree Attacks During Low Bark Beetle Populations in Ponderosa Pine Forests of Northern Arizona0 aImpacts of Silvicultural Thinning Treatments on Beetle Trap Capt  cOct  a1693-17030 v1033 aOur research used a combination of passive traps, funnel traps with lures, baited trees, and surveys of long-term thinning plots to assess the impacts of different levels of stand basal area (BA) on bark beetle tree attack and on trap captures of Ips spp., Dendroctonus spp., and their predators. The study occurred at two sites in ponderosa pine, Pinus ponderosa Dough. ex Laws., forests, from 2004 to 2007 during low bark beetle populations. Residual stand BA ranged from 9.0 to 37.0 m2/ha. More predators and bark beetles were collected in passive traps in stands of lower BA than in stands of higher BA; however, significance varied by species and site, and total number of beetles collected was low. Height of the clear panel passive traps affected trap catches for some species at some sites and years. When pheromone lures were used with funnel traps (Ips pini (Say) lure: lanierone, +03/-97 ipsdienol), we found no significant difference in trap catches among basal area treatments for bark beetles and their predators. Similarly, when trees were baited (Dendroctonus brevicomis LeConte lure: myrcene, exo-brevicomin and frontalin), we found no significant difference for days to first bark beetle attack. Surveys of long-term thinning treatments found evidence of bark beetle attacks only in unthinned plots ([approximately equal]37 m2/ha basal area). We discuss our results in terms of management implications for bark beetle trapping and control.10aDendroctonus10aIps1 aGaylord, M., L.1 aHofstetter, R., W.1 aWagner, M., R.  uhttps://weevil.myspecies.info/impacts-silvicultural-thinning-treatments-beetle-trap-captures-and-tree-attacks-during-low-bark-beet02030nas a2200169   4500008004100000020001400041245013600055210006900191260000900260300001200269490000700281520137900288653001701667100001801684700002301702856013501725       2009                        eng d  a0046-225X00aEffects of gallery density and species ratio on the fitness and fecundity of two sympatric bark beetles (Coleoptera: Curculionidae)0 aEffects of gallery density and species ratio on the fitness and   cJune  a639-6500 v383 aInterspecific interactions among tree-killing bark beetle species may have ecologically important consequences on beetle population dynamics. Using two tree-killing beetle species (Dendroctonus brevicomis and D. frontalis), we performed observational and experimental studies to verify cross-attraction and co-colonization under field conditions in northern Arizona and test the effects of gallery density and species ratio on response variables of average gallery length, offspring size (progeny fitness), and offspring production per centimeter gallery (fecundity). Our results show that both D. frontalis and D. brevicomis aggregate to pheromones synthesized de novo by D. brevicomis under field conditions and that galleries of both D. brevicomis and D. frontalis occurred together in the same region of a single host tree with significant frequency. In experimental manipulations of species ratios, the presence of conspecific beetles in the gallery environment strongly mediated fecundity, but D. frontalis was the only species that suffered negative impacts from the presence of heterospecific beetles in the gallery environment. interactions did not result in any apparent fitness effects for progeny of either species, which suggests that multispecies aggregations and co-colonization may be a dominant ecological strategy in the region and result in niche sharing.10aDendroctonus1 aDavis, T., S.1 aHofstetter, R., W.  uhttps://weevil.myspecies.info/effects-gallery-density-and-species-ratio-fitness-and-fecundity-two-sympatric-bark-beetles-coleopter