Inaug.-diss.--Halle. / "Abgebrochen am schluss des zweiten teiles ... Der schluss befindet sich im Forstwissenschaftlichen-centralblatt ... Jahrgang 1904." Lebenslauf.

A comparatively small amount of work has been 3 one onthe morphology of the genitalia of the members of the familyIpidae. Dr# Otto Busslin, in Germany, has published some ofhis work on the phylogeny of the group according to themorphology, in "Zeitschrift fur wissenschaftliche Insektenbiologie",Yols. 7 and 8, 1910 and 1911. Dr. A. D. Hopkins,in U.SoD.A. # Bull* Ho.17, WA Preliminary Classification of the8mper-family Scolytoidea", £t. II, 1915, gives a very generalreview of the subject from a comparative standpoint, andDr. J. M. Swaine includes a few figures of internal structuresin his Dominion Dept. of Agriculture Bull. Ho.14, 1918. / fr

No description available.

Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1991. / Vita. Abstract. Includes bibliographical references (leaves 148-163). Also available via the Internet.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1962. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

The behaviour of the ambrosia beetle Trypodendron llneatum (Olivier) has been considered in respect to illumination, body moisture and host factors. The investigation was designed to study potential uses of this insect as a test instrument for chemical studies of host wood attractants. A preliminary study of host attractants was also conducted using a newly-proposed bioassay technique. Monochromatic light at the wavelength 543 millimicrons was found to be the sole peak of stimulation to this insect in the visible spectrum. Beetles displayed a positive photic response by walking toward the source of light. A decrease in sensitivity occurred on either side of this peak, and in the longer wavelengths the sensitivity to light diminished at 735 millimicrons. Evidence to date indicated a second peak of sensitivity in the ultraviolet region of the spectrum; the latter appearing to be much greater than the peak in the visible spectrum. The intensity of any wavelength was also found to be a limiting factor in affecting beetle response, although in the longer wavelengths the sensitivity appeared to be a function of wavelength alone. Monochromatic light as a standard has been proposed for future bioassay techniques to act in opposition to odour stimuli. Red illumination was found to be effective in simulating darkness to T. lineatum. ‘Green’ unattractive sapwood shavings of Douglas-fir after placement under oxygen deficient conditions became attractive to T. lineatum. Maximum attractiveness was indicated in wood placed under anaerobiosis for 20 to 26 hours. Beyond 30 hours, little sign of attractants was noted. Control wood series did not undergo any transition, this leading to the conclusion that a significant change occurred in wood as a result of the anaerobic treatment. The implications of this result have been discussed. The successful use of wood shavings has made possible further studies on the nature of origin of attractants. The use of the anemotactic behaviour of beetles of both sexes to an airstream carrying host odour was found to be a highly efficient technique of analysis. The role of greater quantities of light in attracting insects away from a source of olfactory stimulation became increasingly apparent from this study. Moisture loss of the insect apparently did not alter their response to white light. / Science, Faculty of / Zoology, Department of / Graduate

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-07-18T19:02:44Z No. of bitstreams: 1 2003 - Claudio Henrique Pereira.pdf: 2629935 bytes, checksum: cf92eea06cad9ee7de82cfdd184bbe04 (MD5) / Made available in DSpace on 2017-07-18T19:02:44Z (GMT). No. of bitstreams: 1 2003 - Claudio Henrique Pereira.pdf: 2629935 bytes, checksum: cf92eea06cad9ee7de82cfdd184bbe04 (MD5) Previous issue date: 2003-04-09 / Studies to observe insects of the family Scolytidae (Coleoptera) in mangrove essences were carried in the city of Rio de Janeiro, Barra da Tijuca, Parque da Gleba "E" (Area 1) and Barra de Guaratiba (Area 2) during 25 months from August 1999 to August 2001, based on weekly observations of stems of three essences occurring in these areas: Rhysophora mangle L. (Rhysophoraceae), Avicennia schaueriana STAPFT & LEECHM (Acanthaceae) and Hibiscus pernambucensis L. (Malvaceae). It was utilized 120 stems of each essence in each area. After the observation of occurrence of Scolytidae attack in essences samples of 10cm of each stem were take biweekly for laboratory observation. The numbers of perforations, the number of insects captured, number of galleries and larvae were analyzed statistically and graphically compared to weather data collected from the Esta??o Meteorol?gica do Aeroporto de Jacarepagu? (?rea 1) and the Esta??o Experimental do Instituto Nacional de Meteorologia, INMET, RJ, located in Barra de Guaratiba (area 2). Were captured nine species of Scolytidae, distributed in six genera: Xileborus, Hypotenemus, Premnobius, Ambrosiodmus, Cryptocaremus and Cnesinus. The most significant species in the two areas were Xileborus affinis (29.70%), Hypothenemus eruditos (23.17%) and Ambrosiodmus haguedorni (20.78%). There was significant correlation between population density and climatic variations for the three species of Scolytidae with the highest percentage of occurrence. The peak of occurrence was observed in January and February and decreased in June, July and August. There was significant variation in the incidence of beetles preference regarding botanical essences, Rhysophora mangle being the most attacked and Hibiscus pernambucensis unless attacked. Were also used traps baited with alcohol Modelo Carvalho - 47, to catch the Scolytidae. The observations and collections of insects were held weekly. The data underwent the same statistical methods. The results obtained with the traps did not differ from those obtained with the use of stem. It was verified that the area with the highest incidence of insects was the area 2, which presents more degraded vegetation at the expense of area 1 which presents a more preserved mangrove. / Estudos para observa??o de insetos da fam?lia Scolytidae (Coleoptera), em ess?ncias de mangue, foram realizados no Munic?pio do Rio de Janeiro, Barra da Tijuca, Parque da Gleba ?E? ? ?rea 1 e Barra de Guaratiba ? ?rea 2, durante 25 meses, de agosto de 1999 ? agosto de 2001, baseando-se na observa??o semanal de toletes de tr?s ess?ncias ocorrentes nestas ?reas: Rhysophora mangle L. (Rhysophoraceae), Avicennia schaueriana STAPFT & LEECHM (Acanthaceae) e Hibiscus pernambucensis L. (Malvaceae). Foram utilizados 120 toletes de cada ess?ncia em cada ?rea. Posteriormente ? observa??o da ocorr?ncia do ataque dos Scolytidae ?s ess?ncias, foram retirados, quinzenalmente amostras de 10 cm de cada tolete, para observa??o em laborat?rio. Os n?meros de perfura??es, n?mero de insetos capturados, n?mero de galerias e de larvas foram analisados estat?stica e graficamente em rela??o aos dados clim?ticos coletados junto ? Esta??o Meteorol?gica do Aeroporto de Jacarepagu? (?rea 1) e a Esta??o Experimental do Instituto Nacional de Meteorologia, INMET, RJ, localizada na Barra de Guaratiba (?rea 2). Foram capturadas nove esp?cies de Scolytidae, distribu?das em seis g?neros: Xileborus, Hypotenemus, Premnobius, Ambrosiodmus, Cryptocaremus e Cnesinus. As esp?cies mais significativas nas duas ?reas foram Xileborus affinis (29,70%), Hypothenemus eruditos (23,17%) e Ambrosiodmus haguedorni (20,78%). Houve correla??o significativa entre a densidade populacional e as varia??es clim?ticas para as tr?s esp?cies de Scolytidae com maior percentual de ocorr?ncia. Obsevou-se picos de ocorr?ncia nos meses de janeiro e fevereiro e queda nos meses de junho, julho e agosto. Houve varia??o significativa na prefer?ncia de incid?ncia dos cole?pteros em rela??o ?s ess?ncias bot?nicas, sendo Rhysophora mangle a mais atacada e Hibiscus pernambucensis a menos atacada. Ainda foram utilizadas armadilhas com isca de etanol Modelo Carvalho ? 47, para a captura dos Scolytidae. As observa??es e coletas dos insetos foram realizadas semanalmente. Os dados sofreram os mesmos tratamentos estat?sticos. Os resultados obtidos com as armadilhas n?o diferiram dos obtidos com a utiliza??o dos toletes. Constatou-se que a ?rea com maior incid?ncia dos insetos foi a ?rea 2, que apresenta uma vegeta??o mais degradada em detrimento da ?rea 1 a qual apresenta um manguezal mais preservado.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1964. / Vita. Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Tez (Doktora) - Süleyman Demirel Üniversitesi, Fen Bilimleri Enstitüsü, Orman Mühendisliği Anabilim Dalı, 2008. / Kaynakça var.

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, as analyzed by gas-liquid chromatography, showed geographic and temporal variations. Changes in the quantities of α-pinene (aP), frontalin (F), and <i>endo</i>-brevicomin (eB), are believed to result from responses of the host and the beetle to each other's activity at a given time and differences in their respective health. The chiralities of aP, F, and eB at all locations generally remained stable over time, yet variation across the insect's geographic range, particularly for aP and F, is believed to be due to genetic variation of individuals. Geographic and temporal variations in the quantities and chiralities of <i>cis</i>-verbenol (cV), <i>trans</i>-verbenol (tV), and verbenone (V) are presumed to be due to the multiple pathways of origin (SPB, autoxidation, and microorganisms). Analysis of the same semiochemicals isolated from hindguts of individual beetles from Texas, South Carolina, and North Carolina showed quantities of cV and tV to be substantially greater in females than in males; whereas, males contained much greater amounts of V. Geographic differences were found in quantities of tV and V in both sexes and in aP and F in males only. The chiralities of most semiochemicals present in SPB hindguts differed markedly from those released from infested logs. Males produced predominantly (+)-F and (-)-eB, (-)-cV, and (-)-V; however, the chirality of tV varied considerably among areas. In contrast, females produced predominantly (+)-cV and (+)-V and (-)-F, (-)-eB, and (-)-tV. The (+) enantiomer of aP predominated in both sexes, but the proportion of (+ )-aP was generally lower than that released from SPB-infested logs from the same areas. Geographic differences in chirality of tV and V were significant in males and for eB in females. In laboratory trials, aP autoxidized under ambient temperatures to form tV, myrtenol (M), V and to a lesser extent, cv. Both the quantities and chiralities of these compounds were dependent on the chirality of the aP precursor. Significantly greater amounts and proportions of the (+) enantiomer of each compound were produced when (+)-aP was predominant than when the antipode of the precursor was predominant. The extent to which autoxidation products playa role in bark beetle behavior is expected to be dependent on the proportion of aP in pine resin and its chirality present in a pine species. The information gained from this research was used to elaborate on previously proposed behavioral sequences occurring during the mass attack of host trees by SPB and to suggest new avenues to improve the use of semiochemicals in pest management efforts. / Ph. D.