680 research outputs found
Rector on cut-leaf teasel, Dipsacus laciniatus L. (Dipsacaceae)
Get PDFThe present study highlights some conspicuous structural malformations of the native Eurasian plant Dipsacus laciniatus L. (Dipsacaceae) caused by infestation with a newly determined eriophyid mite, Leipothrix dipsacivagus (Petanovic & Rector, 2007). The most striking structural changes, induced by mite feeding were evident in the stunted appearance of infested plants and conspicuous injuries to their leaf tissues. The significant damage it causes to D. laciniatus recommends the narrow host-range mite L. dipsacivagus as a potential agent for biological control of this plant, which is widespread everywhere in the lowlands of Europe and is listed as an invasive and noxious weed in the USA.U radu su opisane i kvantifikovane promene nalistovima Dipsacus laciniatus L. (Dipsacaceae) prouzrokovane infestiranjem eriofidnom grinjom Leipotrix dipsacivagus (Acari: Eriophyoidea). Infestirane biljke su nižeg stabla, manje veličine cvasti, "rđaste", kao i sa značajnim promenama u tkivima listova. Uočeni uticaj eriofidne grinje predstavlja mogućnost njene primene kao potencijalnog agensa biološke borbe protiv zeljaste korovske biljke D. laciniatus
Recommended from our members
Proceedings of the XII international symposium on biological control of weeds
No full textAnatomical injuries caused by Leipotrix dipsacivagus Petanovic & Rector on cut-leaf teasel, Dipsacus laciniatus L. (Dipsacaceae)
No full textThe present study highlights some conspicuous structural malformations of the native Eurasian plant Dipsacus laciniatus L. (Dipsacaceae) caused by infestation with a newly determined eriophyid mite, Leipothrix dipsacivagus (Petanovic & Rector, 2007). The most striking structural changes, induced by mite feeding were evident in the stunted appearance of infested plants and conspicuous injuries to their leaf tissues. The significant damage it causes to D. laciniatus recommends the narrow host-range mite L. dipsacivagus as a potential agent for biological control of this plant, which is widespread everywhere in the lowlands of Europe and is listed as an invasive and noxious weed in the USA
Morphological injury of cut-leaf teasel, Dipsacus laciniatus L. (Dipsacaceae) induced by the eriophyid mite Leipothrix dipsacivagus Petanovic et Rector (Acari: Eriophyoidea)
Get PDFThe eriophyid mite Leipothrix dipsacivagus Petanovic et Rector provokes severe malformations to its host plant, cut-leaf teasel (Dipsacus laciniatus L.), in the field. These injuries were examined at the morpho-anatomical level in infested plants collected in the field and experimentally infested plants kept under controlled laboratory conditions. A number of symptoms were observed including reduced growth, internode shortening, leaf rolling and wrinkling, and shrunken inflorescences. After severe attack, the leaves of bolted plants became chlorotic with necrotic spots and started to wilt. Young rosettes died. Morphometric analysis revealed significant differences between infested and healthy field-collected bolting plants. Infested plants were significantly shorter than healthy plants, with smaller leaves and flower heads. Striking injuries were also observed on young leaves of experimentally infested plants. It is expected that further investigations will elucidate the full extent of the damage to aboveground parts of D. laciniatus due to infestation by L. dipsacivagus
Musika eta Mintzairaren Sorrera
No full textEn el presente artículo el autor se refiere a la relación evolutiva entre música y lenguaje y a la naturaleza de ambas habilidades, exponiendo distintas teorías del pasado y actuales en torno a la cuestión. El articulista defiende con B.G. Levman que tanto el lenguaje como la música nacieron de una misma capacidad primitiva y considera aquel lenguaje fundamentalmente como música. Da cuenta de los pros y los contras de las hipótesis que adelanta. En este sentido, expone las conductas de diversos pueblos y razas y diferentes animales, componiendo un tratamiento particularmente completo del tema con análisis efectuados desde diversas disciplinas: etnomusicología, etología, antropología, psicología, acústica.Artikulu honetan autoreak musika eta mintzairaren harreman ebolutiboaz nahiz bi gaitasunon izaeraz dihardu, horren gainean diren eta izan diren teoria ezberdinak azalduz. B.G. Levman artikulugileak berak bai mintzaira eta bai musika antzin-gaitasun beretik sortu zirela defenditzen du, eta orduko mintzaira hura funtsean musikazkotzat jotzen du. Agertzen dituen hipotesien aldekotasun eta kontrakotasunak ematen ditu. Horretarako mundu zabaleko hainbat herri eta animalia arrazen jokamoldeak ekartzen ditu paperera, eta etnomusikologia, etologia, antropologia, psikologia, akustikaren ikuspegitik aztertzen, gaiaren tratamendu bereziki borobila eta osatua eginez.Dans cet article, l'auteur parle de la relation évolutive entre musique et langage et la nature de ces deux talents, en exposant différentes théories du passé et du présent concernant cette question. L'auteur et B.G. Levman défendent la théorie qui soutient que le langage et la musique naquirent d'une même capacité primitive et considèrent ce langage fondamentalement comme de la musique. Il explique le pour et le contre de l'hypothèse qu'il avance. Dans ce sens, il expose les conduites de divers peuples et races et de différents animaux, en traitant le sujet d'une façon particulièrement complète, avec des analyses sur diverses disciplines: ethno-musicologie, éthologie, anthropologie, psychologie, acoustic.In the present article the author makes reference to the evolutionary relationship between music and language and to the nature of both skills, exposing different theories in the past and present in connection with this issue. The author maintains, together with B.G.Levman, that both language and music were born out of the same primitive capacity and considers that language is, fundamentally, music. He also reports on the pros and cons of the hypothesis he advances. In this sense, he describes the conduct of various peoples and races and of various animals, constructing a particularly complete treatment of the topic with analysis carried out from various disciplines: ethnomusicology, ethology, anthropology and psychology
B.G. Wood
No full textMade available by the Northern Territory Library via the Publications (Legal Deposit) Act 2004 (NT).Date:1985-03Acknowledgements:
The author acknowledges the field and office assistance of Ian Hall and
Jon Burgess during the preparation and completion of this project
Des Herrn Canquoin Chaussier Erdbeschreibung Von Frankreich Nach Der Neuen Eintheilung in 83 Departements : welche die Größe und Lage eines jeden Bezirks, die Entfernung von Paris und der Hauptstadt jedes Distriktes ... : Nebst zwey alphabetischen Verzeichnissen aller Hauptstädte in den Departements und ihren Distrikten
No full textAus dem Französischen ins Deutsche übersezt und aus den besten Reisebeschreibungen und Geographien verbessert und vermehret von Heinrich Wilhelm Rotermund, Rector zu BuxtehudeBogen a-a3 einseitig bedrucktEnthält Widmung an "... Herrn Ferdinand Adolph von Ende ..."Neue Erdbeschreibung von Frankreich nach der Eintheilung in 83 DepartementVorlageform der Veröffentlichungsangabe: "Hamburg, Bey B.G. Hoffmann. 1792.
Beginselen en voorbeelden van regelgeving en beleid ten aanzien van de opsporing en winning van aardolie en aardgas
No full textCivil Engineering and Geoscience
- …
