00613nas a2200181   4500008004500000020001400045245007800059210006900137260001800206300000700224490000700231653001200238653002200250653002200272100002100294700002100315856009500336       2008                        Russdan    a0084-560400aThe first record of Tomicus destruens (Coleoptera, Scolytidae) in Ukraine0 afirst record of Tomicus destruens Coleoptera Scolytidae in Ukrai  cYanvar-Fevral  a840 v4210aTomicus10aTomicus destruens10aTomicus piniperda1 aKhaustov, A., A.1 aNikulina, T., V.  uhttps://weevil.myspecies.info/first-record-tomicus-destruens-coleoptera-scolytidae-ukraine02154nas a2200193   4500008004500000020001400045245010900059210006900168260001400237300001200251490000800263520147100271653002201742100001601764700001501780700001701795700002001812856012801832       2008                        Engldsh    a0931-204800aKairomonal responses of Tomicus destruens (Col., Scolytidae) to host volatiles alpha -pinene and ethanol0 aKairomonal responses of Tomicus destruens Col Scolytidae to host  cSeptember  a654-6620 v1323 aThe Mediterranean pine shoot beetle Tomicus destruens is one of the most damaging bark beetles attacking Mediterranean pine forests in southern Europe and north Africa. We studied the attractiveness of the host volatiles [alpha]-pinene and ethanol at a range of release rates, alone or in combination, to T. destruens, in order to develop an attractive lure for the management of this beetle. T. destruens was attracted slightly to the host volatile [alpha]-pinene, but a strong synergistic effect was found in the attraction towards monoterpene when ethanol was added to the bait. The highest catches of T. destruens were obtained by the optimal blend releasing 300 mg/day of [alpha]-pinene and 900 mg/day of ethanol. In contrast to data reported for the related species T. piniperda, Mediterranean pine shoot beetles were clearly attracted to baits releasing ethanol alone (1350 mg/day). trans-Verbenol, which was also added to host volatiles in some tests, did not affect the response. The use of the attractive blend proposed would have a low impact on the natural enemy population of Thanasimus formicarius because of asynchronies in flight periods. Other non-target insects, such as the facultative predator or competitor Oxipleurus nodieri, were also significantly attracted. These results allow the development of an operative lure for the effective monitoring of T. destruens, although improvements by the addition of other host volatiles should be studied.10aTomicus destruens1 aGallego, D.1 aGalian, J.1 aDiez, J., J.1 aPajares, J., A.  uhttps://weevil.myspecies.info/kairomonal-responses-tomicus-destruens-col-scolytidae-host-volatiles-alpha-pinene-and-ethanol02211nas a2200169   4500008004500000020001400045245013400059210006900193260001300262300001200275490000700287520155900294653002201853100001601875700001501891856013501906       2008                        Engldsh    a0947-574500aHierarchical structure of mitochondrial lineages of Tomicus destruens (Coleoptera, Scolytidae) related to environmental variables0 aHierarchical structure of mitochondrial lineages of Tomicus dest  cNovember  a331-3390 v463 aWe investigated here the relation of environmental variables with the distribution of mitochondrial lineages using a bark beetle species of Mediterranean distribution as a model. We analysed a total number of 460 DNA sequences of Tomicus destruens provided by intensive and extensive collection and GenBank entries. We combined phylogeography and regression models to study the role of five environmental predictors at fine scale in the distribution of a local genealogy. The analysis revealed a high genetic diversity, with 52 haplotypes present in Sierra Espuna forest (SE Spain) and 21 haplotypes in the other 14 Spanish populations, all included in the western clade of the Mediterranean phylogeography of the species. We found a micro-distribution of the species related to altitude and putative niche segregation between lineages associated with the micro-environmental conditions of their host pine trees. We compared the phylogeographic hypothesis obtained here with the phylogeography obtained integrating our data with all data published elsewhere. Here, we demonstrate a relation between the environmental heterogeneity and the haplotypic diversity at Mediterranean Basin scale. This analysis allows us to support the evolutionary scenario where the phylogeography and current molecular diversity of T. destruens is a consequence of the recolonization from two principal refugia at both extremes of the Mediterranean Basin and, according to our data, we propose that the heterogeneity of habitats allows fixation of the mitochondrial lineages.10aTomicus destruens1 aGallego, D.1 aGalian, J.  uhttps://weevil.myspecies.info/hierarchical-structure-mitochondrial-lineages-tomicus-destruens-coleoptera-scolytidae-related-enviro03086nas a2200181   4500008004500000020001400045245011600059210006900175260001400244300001400258490000700272520240800279653002202687100002102709700002302730700001702753856013402770       2008                        Engldsh    a0098-033100aResponses of the Mediterranean pine shoot beetle Tomicus destruens (Wollaston) to pine shoot and bark volatiles0 aResponses of the Mediterranean pine shoot beetle Tomicus destrue  cSeptember  a1162-11690 v343 aThe pine shoot beetle Tomicus destruens has two dispersal phases per generation. In the first, mature adults move toward trunks of dying pines to lay eggs; in the second, callow adults move toward the shoots of healthy pines for maturation feeding. However, there is no information on the chemical stimuli that govern host selection by T. destruens adults. The aims of this study were: (1) to identify the volatiles released by shoots and bark of stone pine that are behaviorally and electrophysiologically active on T. destruens; (2) to verify which blends and concentrations of such volatiles are differently active on males and females, as well as on callow and mature adults, during the two host search phases (breeding and feeding). A four-arm olfactometer was used to test the behavior of walking T. destruens adults toward various sources of volatiles including fresh shoots and bark, their collected volatiles, and two synthetic blends. For each odor, the behavior of both callow and mature males and females was recorded individually. Shoot and bark extracts were analyzed by coupled gas chromatography and mass spectrometry (GC-MS), and tested by gas chromatography coupled with electroantennography (GC-EAD) on T. destruens males and females. Two blends of two ([alpha]-pinene and [beta]-myrcene; blend A) and three ([alpha]-pinene, [beta]- myrcene, and [alpha]-terpinolene; blend B) synthetic compounds, chosen among those that induce EAD responses and known to be attractive for other bark beetle species, were tested in the olfactometer at five concentrations. Insect behavior was affected by the degree of sexual maturation but not by sex. Callow insects were attracted by shoots and their extracts, while mature individuals by bark and its extracts. Six extracted compounds were active on T. destruens antennae: limonene, (Z)-3-hexen-1-ol and [beta]-caryophyllene, [alpha]-pinene, [beta]-myrcene, and [alpha]-terpinolene. [alpha]-Terpinolene, released only by bark, was active only on mature insects, whereas (Z)-3-hexen-1-ol, released only by shoots, was active only on callows. Males and females showed similar EAD responses. Of the six extracted volatiles, two were attractive for callow adults (blend A) and three for matures (blend B). In both cases, responses were positively correlated with blend concentration, although a repellent effect was noted at the highest concentrations.10aTomicus destruens1 aFaccoli, Massimo1 aAnfora, Gianfranco1 aTasin, Marco  uhttps://weevil.myspecies.info/responses-mediterranean-pine-shoot-beetle-tomicus-destruens-wollaston-pine-shoot-and-bark-volatiles02259nas a2200157   4500008004100000020001400041245011000055210006900165260001100234300001200245490000800257520167200265653002201937100001601959856012601975       2009                        eng d  a0013-870300aBreeding performance of Tomicus destruens at different densities: the effect of intraspecific competition0 aBreeding performance of Tomicus destruens at different densities  cAugust  a191-1990 v1323 aIn many bark beetles (Coleoptera: Curculionidae: Scolytinae), intraspecific competition is a limiting factor governing their population dynamics. The aim of this study was to evaluate the effect of increasing infestation densities on the breeding performance of Tomicus destruens (Wollaston), one of the main pests of Mediterranean pine forests. Six densities (ranging from 0.25 to 1.50 females dm-2) were tested under laboratory conditions on stone pine logs, assessing the mortality of eggs, larvae, and pupae, and recording the number of emerging adults. Density significantly affected the fertile tract of the maternal galleries, i.e., those containing eggs, which was shorter at densities higher than 0.75. Numbers of eggs, larvae, pupae, and adults per female decreased markedly when density increased from 0.25 to 1.5, although differences were statistically significant only at a density of 0.75 and higher. The lowest mortality was found in larvae reared at a density of 0.25 (17.7%) and the highest in pupae at 1.5 (84.8%). Increasing density affected the pre-emergence stages in different ways, with pupae and larvae suffering the highest increases in mortality (39.5 and 163.6%, respectively). The breeding performance of T. destruens (number of eggs laid reaching adulthood) progressively decreased from 17 to 4% with increasing densities, although at low infestation, the mean number of emerging adults per dm2 of bark increased with density, showing a positive trade-off between female fecundity and female density. In conclusion, breeding densities higher than 0.75 female dm-2 decreased female fecundity and elicited high mortality, mainly in larvae.10aTomicus destruens1 aFaccoli, M.  uhttps://weevil.myspecies.info/breeding-performance-tomicus-destruens-different-densities-effect-intraspecific-competition02201nas a2200157   4500008004100000020001400041245010600055210006900161260000900230300001200239490000800251520161100259653002201870100002101892856013001913       2007                        eng d  a0013-870300aBreeding performance and longevity of Tomicus destruens on Mediterranean and continental pine species0 aBreeding performance and longevity of Tomicus destruens on Medit  cJune  a263-2690 v1233 aThe pine shoot beetle Tomicus destruens (Wollaston) (Coleoptera: Curculionidae: Scolytinae) is one of the main pests of Mediterranean forests, where it is oligophagous on Mediterranean pines. However, possible global warming may make the insect move to higher latitudes and altitudes, allowing it to attack new pine species. In this respect, the aim of the present article was to assess both the acceptance and performance of T destruens offered host and non-host pine species. A no-choice breeding experiment was set up under laboratory conditions, using logs of three Mediterranean (Pinus pinea L., Pinus pinaster Miller, and Pinus halepensis Aiton) and two continental (Pinus nigra Arnold and Pinus sylvcstris L.) pine species. Log debarking at the end of adult emergence assessed parent fecundity egg, and larval mortality. The quality of callow adults emerging from each tested pine was evaluated on the basis of their longevity on a semiartificial diet. Tomicus destruens colonised all tested pine species, but did not reproduce in Scots pine, taking about 79 days to complete development with no differences among pines tested. The best breeding performance, evaluated as female fecundity and adult production, was observed in R halepensis, and the lowest in P. pinaster. On average, adults emerging from P. pinea survived longer (83 days) than from other pines, and adult longevity was the lowest in males emerging from R nigra. Austrian pine, which under natural conditions is usually not a host of T. destruens, allowed insect development and adult production similar to P. pinea and P. pinaster.10aTomicus destruens1 aFaccoli, Massimo  uhttps://weevil.myspecies.info/breeding-performance-and-longevity-tomicus-destruens-mediterranean-and-continental-pine-species01796nas a2200157   4500008004100000020001400041245015100055210006900206260001500275300001200290490000700302520115300309653002201462100002001484856013401504       2007                        eng d  a0037-927100aAttack strategy of the bark beetle Tomicus destruens (Wollaston 1865) (Coleoptera: Scolytidae) on Aleppo pine in semi-arid areas (Algeria, Djelfa)0 aAttack strategy of the bark beetle Tomicus destruens Wollaston 1  cApril-June  a129-1370 v433 aFemales of Tomicus destruens cause serious injury to Aleppo pines when building their egg galleries under the bark. Group attacks on pine trees by the adult beetles result in tree deaths and consequently pine forest decay. A study of the preferred sites for attacks demonstrated variability between individual trees. Females prefer trees at the northern slopes of the hills. T destruens breeds there more actively and gives more abundant progeny. While on the northern slopes of the hills, the female's choice the bark exposed to the south to bore their galleries. Additionally, both tree trunk diameter and the thickness of the bark were found to be critical factors for selection. Among other factors influencing Tomicus destruens attacks is the age of individual trees. Counting the number of egg galleries and measuring their lengths revealed a strong negative correlation between the density of infestation and length of the galleries. Intraspecific competition within T destruens was demonstrated also. Reproductive success is controlled by the density of the galleries, which in turn is determined by the bark surface available for breeding.10aTomicus destruens1 aChakali, Gahdab  uhttps://weevil.myspecies.info/attack-strategy-bark-beetle-tomicus-destruens-wollaston-1865-coleoptera-scolytidae-aleppo-pine-semi01317nas a2200145   4500008004500000020001400045245013200059210006900191260000800260300001000268520072000278653002200998100001601020856013501036       2008                        Engldsh    a0870-387600aBIOLOGY AND BEHAVIOUR OF THE BARK BEETLE, TOMICUS DESTRUENS (WOLLASTON 1865) (COLEOPTERA: SCOLYTIDAE) IN ALLEPO PINE OF ALGERIA0 aBIOLOGY AND BEHAVIOUR OF THE BARK BEETLE TOMICUS DESTRUENS WOLLA  cDec  a35-423 aThe aim of this work is to elucidate further details of the biology, feeding behaviour and ecology of the bark beetle Tomicus destruens (Wollaston, 1865). In recent years, this species has caused considerable damage to pine plantations in Algeria, especially its main host Aleppo pine, Pinus halepensis growing in arid areas. The results showed that the beetle has one generation per year, from April to the beginning of October; adults disperse and cause primary damage by colonizing new shoots and branches of host trees growing close to the reproduction site. By the end of autumn and during the winter, females cause secondary damage by oviposition into constructed galleries between host pine bark and sapwood.10aTomicus destruens1 aChakali, G.  uhttps://weevil.myspecies.info/biology-and-behaviour-bark-beetle-tomicus-destruens-wollaston-1865-coleoptera-scolytidae-allepo-pine