IRG Documents Database and Compendium


Search and Download IRG Documents:



Between and , sort by


Displaying your search results

Your search resulted in 37 documents. Displaying 25 entries per page.


A suggested method to test the toxicity of wood preservatives towards the house longhorn beetle
1977 - IRG/WP 275
This method was developed in the Institute for Wood Technology in Sarajevo, Yugoslavia and is used to get quick information on the toxicity of wood preservatives against house longhorn beetle (Hylotrupes bajulus). The method can be used for superficially treated or deeply impregnated wood blocks, and by using small or normal size test material it can be used as a laboratory or field test, and also for accelerated infestation of test material out of ground contact. The paper is given to the International Research Group on Wood Preservation as a suggested method which could possibly be used as a standard. Only the laboratory test method is described.
N Vidovic


A medium for mass culturing of a bamboo boring beetle Dinoderus minutus Fabricius
1983 - IRG/WP 1182
The bamboo is a traditional product of Japan. But its susceptibility to insects is one of the most important problems. The author has found that for the determination of the effectiveness of insecticides it is very easy to obtain sufficiently numerous adults of Dinoderus minutus by using Buckwheat Cake. The Buckwheat Cake is prepared with buckwheat flour and thin paper. The author has previously found that Buckwheat Cake is suitable for the culturing of Lyctus brunneus and these results were presented in 1981. In culturing Dinoderus minutus, Buckwheat Cake has been found to be also easier and fasting in bringing forth the adults than natural bamboo.
K Suzuki


The resistance of fifteen Indonesian tropical wood species to the powder post beetle Heterobostrychus aequalis
1990 - IRG/WP 1429
A preliminary laboratory test on the resistance of 15 tropical wood species to Heterobostrychus aequalis has been carried out using small samples of 7.5 x 5 x 1.5 cm³. The results reveal that Pinus merkusii and Agathis borneensis are very susceptible to Heterobostrychus aequalis. Other 13 species vary between susceptible to resistance There is no signifisant relation between starch content and the infestation of Heterobostrychus aequalis in the fifteen wood species.
Jasni, Nana Supriana


Studies on the infestation behaviour of the powder-post beetle Lyctus brunneus (Steph.) and its physical control in the wood yards of the Caspian forests of Iran
1985 - IRG/WP 1271
Lyctus brunneus (Steph.) is a pest which has not been previously thoroughly studied in Iran. It severely attacks Iranian hardwoods, especially those used in wooden houses and that have not been treated. Research work was necessary to determine the natural resistance of the most important timber species in Iran against this insect.
P Niloufari


Supercooling points of Anobium punctatum, the common furniture beetle
1995 - IRG/WP 95-10120
Ice formation within the body of larvae of the common furniture beetle Anobium punctatum causes death of the larvae. Freezing can therefore be used as a means of eradication of the larvae in infested wood. To optimize the freezing process, knowledge of the temperatures sufficient to kill the larvae is essential. Ice formation is initiated by temperatures equaling the so-called supercooling point, which can be found experimentally. The technique used to identify the supercooling points for larvae is described. The larvae used were from laboratory cultures held at 22°C and from cultures acclimatized to 10°C.
T E Hallas, K Bohn Hansen


Sex pheromone of the male house longhorn beetle Hylotrupes bajulus (L.) (Coleoptera: Cerambycidae)
1995 - IRG/WP 95-10100
Since 1990 studies have been conducted with respect to the chemical communication of the house longhorn beetle Hylotrupes bajulus (L.) (Coleoptera: Cerambycidae). The structure of glands located in the prothorax of the beetles was examined with light and scanning electron microscopy. The analyses of different extracts from beetles resulted in the finding and identification (GC-, GC/MS-, and HR-GC/MS-studies) of specific substances derived from the prothoracal glands: (3R)-3-hydroxy-2-hexanone, (2R,3S)-2,3-hexanediol and (2R,3R)-2,3hexanediol. In wind tunnel experiments, unmated female beetles were attracted over a distance of 1m by males, headspace extracts of males, the 3 major components of the glands as well as by the synthetic blends of the components. Thus, the bioassays revealed the initiation of premating behaviour by emission of a long-range sex pheromone from the male prothoracal glands. The pheromone functions as activator, attractant and possibly aphrodisiac for unmated females. Further studies are conducted with respect to disturbance and prevention of mating behaviour of Hylotrupes bajulus in the attics of houses by using pheromone traps.
U Noldt, R Fettköther, F Schröder, H Meyer, K Dettner, W Francke, W A König


On the problem "House Longhorn Beetle" in hardwoods and an aid to distinguish between Hylotrypes bajulus and Hesperophanes cinereus larvae
1981 - IRG/WP 1141
S Cymorek


Control of death-watch beetle (Xestobium rufovillosum Deg.) with experimental permethrin smoke generators
1982 - IRG/WP 3199
This paper presents results obtaining by monitoring population figures, the condition and reproductive state of beetles collected at weekly intervals after each annual treatment.
S J Read


Bibliography on the common furniture beetle Anobium punctatum (De Geer) (Coleoptera, Anobiidae)
1980 - IRG/WP 1104
M-M Serment, H Becker


Effects of some essential oils on wood destroying organisms
1993 - IRG/WP 93-10047
Three wood destroying fungi: Botryodiplodia theobromae Pat. (stain), Gloeophyllum sepiarium (brown rot), and Pycnoporus sanguineus (white rot) were exposed to six plant essential oils: the peppermint, kaffir lime or leech lime, lavender, tarragon, holy basil, and the eucalyptus. The peppermint oil showed most effective to inhibit fungal growth, while eucalypus oil was the least effective. The other oils inhibition rate varied according to the species of fungi. In the experiment of the powder post beetles Heterobostrychus aequalis Waterh., the insects were killed within three days in the oil of tarragon, eucalyptus and holy basil, while in lavender oil they could live to ten days the same as controls. But on the contrary in the oil of peppermint and kaffir lime, some of them could even lived longer than the controls.
K Atisongkroh, C Anantachoke, P Lekuthai, S Pensook, T Kittirattrakarn


A study on biological properties of small black sawer beetle (Monochamus sotor L.)
1992 - IRG/WP 92-1525
The biological properties of the small black sawer beetle (SBSB), which is mainly destructive insect species for fire-damaged timbers in Da Xing An Ling region in China have been researched. Their main properties are: 1. The SBSB occures one generation one year in this region and their larvae overwinter in xylem. 2. The pupation starts in in late May and peak occures in early June. 3. The emergence of adults starts in early June and reach the peak in late June. 4. The oviposition peak and hatching peak are in early July and middle July respectively. 5. The average period of pupa, egg, adult and larva are 19,9, 15-30 and 250-300 days respectively.
Lu Wenda, Shao Jing Wen, Li Jian, Men Fan rong


Use of freeze disinfection for the control of the common furniture beetle Anobium punctatum
1992 - IRG/WP 92-1528
The common furniture beetle Anobium punctatum is an extremely widespread pest of wooden objects in Danish museums. In order to develop non-chemical methods of controlling the pests, experiments were conducted to elucidate the lower lethal temperature of Anobium punctatum. The egg stage was used for the experiments as it is considered the most temperature resistant stage. Groups of Anobium punctatum eggs were exposed to temperatures of -14, -18, -22, -26 and -30°C. Freezing durations were 8 hrs, 24 hrs and 48 hrs, respectively. Preliminary results of the experiments are presented.
L Stengård Hansen


The geographical distribution of the house longhorn beetle Hylotrupes bajulus (L) Serville (Col., Cerambycidae). An attempt at a cartographical compilation of existing data
1978 - IRG/WP 176
The larvae of the house longhorn beetle belong to the most economically important pests of softwood in service in most European countries and also in some areas overseas. I have reported earlier regarding the history, the question of where the pest originally came from, and concerning attacks in earlier and recent times (1968, 1970, 1974, 1976). In this report an attempt has been made to compile cartographically the currently existing data.
H Becker


Threshold levels for dip treatments of chlorpyrifos for borer control
1995 - IRG/WP 95-10137
Chlorpyrifos has been used in non-pressure treatments of freshly sawn lumber and millwork for ten years or longer to control wood boring beetles. Since chlorpyrifos provides a quick kill of existing beetle larvae at the time of the treatment in solution concentrations as low as 0.05%, treaters tend to use less than recommended rates as a cost saving measure. However, laboratory studies conducted in the United States and Europe have shown that concentrations of 0.5% to 1.0% are needed for residual control. A review of these laboratory studies is presented in this paper.
R D Fears, J L Leca


New perspectives on the biology of the tropical powderpost beetle, Minthea rugicollis (Walk.)
1994 - IRG/WP 94-10085
Minthea rugicollis (Walk.) is one of the most important pests of seasoned hardwoods in the tropics. The species owes its ubiquity largely to its insidious development within a nutrient-filled environment and also to a strong coevolutionary specialization with its natural habitat, wood. Such an environment provides a buffer to extrinsic fluctuations and accounts for a wider range of tolerance by immature stages to variations in climatic conditions than would otherwise be possible. Aspects of culture methods, characteristic habits and external tolerances are emphasised so as to generate new perspectives in understanding the fundamental biology of this organism and to improve current wood preservation strategies.
F Abood, R J Murphy, R W Berry


Effectiveness of the new chemical wood preservative Borosol 9? against a house longhorn beetle Hylotrupes bajulus
2004 - IRG/WP 04-30355
Chemical wood preservative Borosol 9, consisting of boric acid - alkanolamine complex, is a new wood preservative with proven efficacy against wood decay fungi. However, we were interested in its efficacy against larvae of house longhorn beetle (Hylotrupes bajulus). Thus, experiment according to the EN 46 procedure was performed. Specimens made of Norway spruce wood (Picea abies) were brushed twice with 10 % Borosol 9 solution. The results showed that most of the larvae were able to tunnel into the treated specimens, but none of them were found alive after the test period of 12 weeks. On the other hand, all control untreated samples were damaged by H. bajulus larvae activity and 98 % of larvae survived. Results indicate that Borosol 9 has an efficient insecticidal activity and acts protective against wood boring insects.
G Babuder, M Petric, F Cadež, M Humar, F Pohleven


The impact of global warming on the UK distribution of house longhorn beetle Hylotrupes bajulus (L)
2001 - IRG/WP 01-10414
This paper reviews the effects of global warming on insect populations and distribution. The affects of global warming on the spread of Hylotrupes is predicted through a review of research related to the influence of temperature on its life-cycle and flight. Records of Hylotrupes distribution were obtained from published surveys, entomologists and museum collections and were plotted for the UK. The UKCIP98 model for climate change was then used to present the average maximum daily temperatures over the emergence period at present, and in the future. The model predicts a 3°C rise in annual temperature by the 2080's. This increase may enable mated females to fly on a greater number of days and over a greater area. The discussion highlights gaps in knowledge concerning the UK population that makes rate of spread difficult to predict at present.
P Oevering, A J Pitman


The WOODCARE project: Development of detection methods for Death watch beetle larvae and fungal decay
1999 - IRG/WP 99-20172
Woodcare was a European project coordinated by English Heritage. The aim of the research was to develop more targeted and more environmentally friendly treatment methods for Death watch beetle infections in Oak constructions of historical buildings. TNO has developed two new methods for fast and reliable detection of Death watch beetle larvae and related fungal decay in Oak. The problem with Death watch beetle is that the extent of the decay is difficult to judge, without destroying the wood structures. Sonic detection proved to be extremely successful in early stages of decay in laboratory samples and in wood in buildings. Furthermore, several chemical analysis methods were used to identify different stages of decay by three fungi in wood in laboratory conditions. From these methods, Pyrolysis mass spectrometry was the most promising, and was then also used on wood samples from buildings. Results of both detection methods are summarized and discussed.
P Esser, P Van Staalduinen, A C Tas


Über Hausbock Hylotrupes bajulus (L.), (Col., Cerambycidae), in Laubholz: Versuche mit Laubholzarten, Prüfung der Wirkung von Ligninstoffen und von Ginkgo biloba, Beobachtungen an Hesperophanes. [On House-longhorn Beetle Hylotrupes bajulus (L.), (Col., Cerambycidae) in hardwood: Investigations with several hardwood-species, tests on activity of lignin components and Ginkgo biloba, observations on Hesperophanes]
1982 - IRG/WP 1144
Hylotrupes bajulus-larvae feed and develop in softwoods, hardwood acts as a feeding poison. The reason for this is still little known. According to literature some observations contradict this established opinion and the question was raised, whether the colour-strain scutifer (= lividus) is able to live in hardwood. Testing ten European and tropical hardwood-species (following the DIN-EN test procedure 46) with recently hatched larvae of the normal strain and var. scutifer (F3), all larvae died within 4 weeks. Breeding and test results indicated a lethal-factor in the scutifer-strain, as postulated by BECKER (1977). Larvae of medium weight (50...160 mg) transfered into blocs of 9 hardwood-species died or were badly affected within 60 days. Only in Ilomba (Pycnanthus angolensis) 7 of 10 larvae survived, 3 were still in good condition. In combined hardwood-softwood blocs, larvae survived much better, feeding predominantly in the softwood. But they often gnawed through the hardwood and pupation and development into the beetle-stage occured there. Derivates of lignin were tested according to testprocedures DIN-EN 46 (preventive activity) and DIN-EN 47 (determination of thresholds). None of the substances were active in nominal value within the range of concentrations (2.5 or 4%, 18 to 27 kg/m³) tested. The syringa-group, typical for hardwood-lignin, tested by Syringaacid, Syringaaldehyd and Acetosyringon, had no special effect. Wood of the Maiden hair-Tree, Ginkgo biloba (which shows negative reaction to Mäule-reagent by lack of the syringa-group like softwood) was very poisonious even after extractions by water and solvents to the larvae. Thus the softwood-indicator Hylotrupes bajulus underlines the more independent systematic position of the Ginkgobsida. The syringa-group seems not to be decisive alone. Observations of Hylotrupes in hardwood were reported mainly from South- and Southwest-Europe. New observations and breedings of single larvae revealed the probability, that this findings depend on Hesperophanes-species. For example the larvae of Hylotrupes and Hesperophanes cinereus are difficult to distinguish.
S Cymorek


A suggested method to ascertain the toxicity of wood preservatives against the house longhorn beetle
1976 - IRG/WP 271
This abstract is given to let IRG members know about a method sometimes used in the Institute for Wood Technology in Sarajevo for obtaining rapid information on the toxicity of insecticides and ready made wood preservatives against the house longhorn beetle, which is the most common insect found attacking timber roof constructions in houses in Yugoslavia. In this method, 8-10 months' old larvae are used and placed in hollowed wooden cylinders which are then mounted and held in position on treated pine sapwood test blocks. By such means, the larvae have to follow the only way towards the treated blocks. On completion of the test, it is ascertained whether the larvae have passed through the treated layer and have continued normal life in the test blocks. The blocks used are normally treated in the manner prescribed by the wood preservative manufacturers, but surface or deep impregnation methods can be used to determine the lethal dose. Experience to date has indicated that old larvae are more resistant than those which are newly hatched and used according to DIN 52 163/73. It has been found also that several preservatives tested by this method have failed in spite of claims by their manufacturers that these had curative efficacy and a high toxicity to larvae.
N Vidovic


A rearing procedure for the house longhorn beetle Hylotrupes bajulus L
1973 - IRG/WP 228
The technique practised at the Princes Risborough Laboratory for culturing Hylotrupes bajulus is described. It is modified from methods previously suggested by German workers. A protein and vitamin enriched wood diet to accelerate larval growth is employed and larvae are subsequently given a period of cool storage to induce pupation. Adults are confined in groups with prepared surfaces for egg laying: batches of eggs are removed daily and incubated over trays. Egg larvae fall into the trays as they hatch and are used for experimental work or for starting new cultures. The cycle takes under a year and adults, eggs and larvae can be available at any time throughout the year.
R W Berry


Anobium punctatum De Geer (Coleoptera Anobiidae)
1980 - IRG/WP 1103
Anobium punctatum de Geer (1) est un Coléoptère qui appartient au sous-ordre des Teredilia et à la famille des Anobiidae. Cet insecte a été décrit pour la première fois par Charles de Geer, entomologiste Suédois dans ses "Mémoires pour servir à l'histoire des insectes" parues en 1774, sous le nom vulgaire de Vrillette pointillée et en latin " Ptinus (punctatus) griseo fuscus". Ces noms de genre et d'espèce ont été modifiés à plusieurs reprises (2) depuis cette date, au fur et à mesure des acquisitions systématiques. "Anobium punctatum" de Geer semble maintenant universellement adopt‚ mais il est possible de voir cet insecte désigner dans la littérature française relativement récente, sous les appellations fréquemment usitées d’Anobium striatum 01. ou plus rarement d'Anobium domesticum. Geof. L'origine grecque du mot Anobium (a : privatif, Bios : vie) tient au fait que les adultes sont capable de faire le mort quand on les touche et de "persister dans cette catalepsie au point de se laisser brûler" (R. Perrier, 1932). D'après les données récoltées jusqu'à present, il semble qu'Anobium punctatum ne soit cantonné que dans les régions tempérées des deux hémisphères Nord et Sud du globe terrestre. C'est ainsi qu’il est bien connu dans la presque totalit‚ des pays d'Europe dont Tooke (1949) dit qu'il est originaire.
M-M Serment


Oviposition orientation of the longicorn beetle Hylotrupes bajulus
1994 - IRG/WP 94-10076
The oviposition behavior of Hylotrupes bajulus with regard to the selection of an oviposition site was studied. The orientation of fertilized females towards a pine block and in choice tests (between pine wood and other materials) was observed. In the latter tests certain sensory organs of the beetles were inactivated. Scanning electron photographs were taken of the ovipositor. They show different types of sensilla located on the 9th segment of the ovipositor. The results of the studies of the oviposition orientation suggest that the females follow an odor gradient by means of receptors located on their antennae. The choice of the oviposition site is determined by several organs, presumably by contact chemoreceptors on the antennae and on the ovipositor. The ovipositor obviously provides information on whether or not a crack is suitable as an oviposition site, the surface structure and the size of the crack being the decisive parameters.
B Hinze, H Hertel


Evaluation of fungi isolated from the galleries of the striped ambrosia beetle Xyloterus lineatus (Ol.) (Col., Scolytidae)
1995 - IRG/WP 95-10092
Fungi from the galleries of the striped ambrosia beetle Xyloterus lineatus (Trypodendron lineatum) (Ol.) found in spruce logs were studied. The following fungi were isolated and identified: Trichoderma harzianum Rifai, the yeast Pichia anomale Hansen (Kurzman), the blue-stain fungus Ceratocystis piceae (graphium) (Münch) Bakshi and a fungus closely similar to Ceratocystis araucariae (anamorph). The growth rate of the fungi was determined on potato dextrose agar (Difco). The most intensive mycelial growth activity was observed at 20 and 25°C. Fungi stained the wood but did not cause significant weight loss of spruce and pine sapwood samples in laboratory conditions. Enzymatical activity was studied by using simple laboratory test methods. Specific ectoenzymes involved in wood decay were determined.
G Babuder,F Pohleven


Efficacies of an insecticide and a fungicide for preventing blue-stain of Japanese red pine logs
2006 - IRG/WP 06-20329
We examined blue-stain fungi on Japanese red pine at 3 forests and 2 saw mills in Iwate Prefecture, Japan. The isolated ophiostomatoid fungi were Leptographium sp and Ophiostoma sp. There were 3 routes of the blue-stain; fungal growth from the spore or hypha stuck on the cross cut surfaces, fungal spread through the inner bark by bark beetles and fungal invasion around whorled knot. The larger extensions of blue-stain in summer and spring seasons were mainly caused from infestations of bark beetles. Efficacies of an insecticide and a fungicide for preventing blue-stain were also evaluated. For preventing blue-stain through the year, it was required to treat logs with the insecticide against bark beetle attacks and with the fungicide to inhibit fungal growth on the cross cut surface.
H Taniuchi, T Koiwa, H Masuya, S Doi


Next Page