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On the vulval morphology of some species of Bursaphelenchus (Nematoda: Parasita...
VIEIRA, Paulo; MOTA, Manuel; RYSS, Alexandre; SANTOS, Ana RitaThe vulval pattern of six species of the genus Bursaphelenchus (B. abruptus, B. conicaudatus, B. fraudulentus, B. luxuriosae, B. mucronatus and B. xylophilus) was studied using scanning electron microscopy. A terminology for the vulval region structures observed is proposed herein and illustrated by micrographs and line drawings. It was shown that, of the studied species, only B. mucronatus and B. xylophilus sh...
Bursaphelenchus Fuchs, 1937 (Nematoda: Parasitaphelenchidae) species associated...
AKBULUT, Sulyman; KETEN, A; RYSS, Alexandre; VALADAS, Vera; VIEIRA, Paulo; MOTA, ManuelA survey for Bursaphelenchus nematodes, associated with different conifer trees, was conducted in several forest areas in the northern regions of Turkey. Only pine trees (Pinus nigra, P. pinaster and P. sylvestris) yielded Bursaphelenchus specimens. Nematodes were identified using several morphological diagnostic characters of the genus (male spicule structure, number of lateral incisures, number and distributi...
The History of Expansion of the Genus Bursaphelenchus (Nematoda: Aphelenchida: ...
RYSS, Alexandre; VIEIRA, Paulo; MOTA, ManuelBecause of globalization and removal of geographical barriers, frequent biological invasions of introduced species become an urgent environmental problem. According to the Convention on Biological Diversity (CBD), precise identification of dangerous aggressive species at the early stages of their invasion to new regions is the most important component of the environmental control and monitoring. To resist the p...
Preliminary survey of the pinewood nematode in Turkey
Akbulut, Suleyman; Vieira, Paulo; Ryss, Alexandre; Yuksel, Besir; Keten, Akif; Mota, Manuel; Valadas, VeraA survey was conducted in the northern conifer forests of Turkey in 2003 and 2004 for the pinewood nematode, Bursaphelenchus xylophilus . Wood samples were collected from declining pine trees, located in the following target areas: Düzce, Ankara, Bolu, and Artvin. Nematodes were extracted from over 310 samples and were observed and identified. B. xylophilus was not detected in any samples. Bursaphelenchus speci...
Review of the genus Bursaphelenchus Fuchs, 1937 (Nematoda, Aphelenchida) with s...
RYSS, Alexandre; VIEIRA, Paulo; MOTA, Manuel; KULINICH, OlegINTRODUCTION AND GOALS: Genus Bursaphelenchus includes several pests of the world importance for the rural economy, the most dangerous are the Bursaphelenchus xylophilus (the pinewood nematode caused decline of the pine trees in south Asia and in one spot area in Europe, Portugal, Peninsula de Setubal) and the Bursaphelenchus cocophilus, causing the decline of coco-palm plantations in Carribean and Latin Amer...
Base de dados e chaves electrónicas (ekeys): ferramentas úteis no diagnóstico e...
RYSS, Alexandre; MOTA, Manuel; VIEIRA, PauloCom o desenvolvimento das tecnologias de computação, o acesso à informação digital nos diversos domínios científicos tem revolucionado e facilitado a obtenção e utilização rápida de dados biológicos. Nos últimos anos, várias bases de dados (catálogos electrónicos) têm sido desenvolvidas, servindo de portal à biodiversidade existente em diversas áreas do globo (ex. Fauna Europaea, Tree of Life). Este tipo de inf...
Computerized key to the genus Bursaphelenchus Fuchs, analysis of species cluste...
RYSS, Alexandre; VIEIRA, Paulo; MOTA, Manuel; KULINICH, OlegThe genus Bursaphelenchus includes B. xylophilus (Steiner et Buhrer, 1934) Nickle, 1981, which is of world economic and quarantine importance. Distinction among several species of the pinewood nematodes species complex (PWNSC) is often difficult. Besides standard morphology, morphometrics and molecular biology, new tools are welcome to better understand this group. The computerized (or e-) key of this genus, pr...
Computerized key of the genus genus Laimaphelenchus Fuchs, 1937
RYSS, Alexandre; VIEIRA, Paulo; MOTA, Manuel; KULINICH, OlegThe Order Aphelenchida contains several genera of economic importance, namely Aphelenchoides and Bursaphelenchus. Nematode species belonging to these 2 genera frequently co-habit with other genera such as Laimaphelenchus. It is therefore important to clearly distinguish them, as well as understand the group´s biodiversity. A computerized, or e-key, for the genus Laimaphelenchus Fuchs has been developed in the B...
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