%0 Journal Article
%T Association Scolytus intricatus - Bursaphelenchus eremus on Oak in Italy Associa  o Scolytus intricatus - Bursaplelenchus eremus em Carvalhos em It¨¢lia
%A Leonardo Marianelli
%A Lorenzo Marziali
%A Beatrice Carletti
%A Fabrizio Pennacchio
%J Silva Lusitana
%D 2011
%I Esta??o Florestal Nacional
%X Recent zoological research carried out in several regions of northern and central Italy has revealed a remarkable occurrence of Nematodes inside the tissues of trunks and branches of various oak species, i.e., Quercus cerris, Q. robur and Q. suber. Taxonomic studies of samples collected from the natural Parks of Ticino Valley, Stupinigi, Groane and Sesia (Lombardia and Piemonte regions) and from Montefalcone and Maremma areas (Tuscany) have always led to detection of the presence of Bursaphelenchus eremus R¨¹hm (Goodey) which had so far only been recorded from Germany, the Czech Republic and Georgia. Plenty of individuals of the nematode were always found inside the samples and a high reproduction rate of that species was confirmed in the laboratory. The nematode was seen to be massively transported by the scolytid insect Scolytus intricatus Ratz. so that where high population levels of that bark beetle are present, the nematode/beetle association can become very harmful to the host oaks. Pesquisas recentes efetuadas em v¨¢rias localidades do Norte e Centro de It¨¢lia detetaram popula  es de nem¨¢todes no interior dos troncos e ramos de v¨¢rias esp¨¦cies de carvalhos, tais como Quercus cerris, Q. robur e Q. suber. A an¨¢lise de amostras recolhidas dos Parques naturais do Vale de Ticino, Stupinigi, Groane e Sesia (regi o da Lombardia e Piemonte) e das ¨¢reas de Montefalcone e Maremma (Toscania) permitiram detetar a presen a sistem¨¢tica de Bursaphelenchus eremus R¨¹hm (Goodey). Anteriormente apenas tinha sido detetado na Alemanha, R¨¦p¨²blica Checa e Georgia. V¨¢rios exemplares deste nem¨¢tode foram detetados nas diferentes amostras recolhidas, tendo-se observado uma elevada taxa de reprodu  o desta esp¨¦cie quando mantida em laborat¨®rio. Constatou-se que o nem¨¢tode ¨¦ transportado pelo inseto escolit¨ªdeo Scolytus intricatus Ratz., pelo que a ocorr¨ºncia de n¨ªveis populacionais elevados deste inseto e do nem¨¢tode associado pode contribuir para o decl¨ªnio dos carvalhos hospedeiros.
%K Scolitus intricatus
%K Bursaphelenchus eremus
%K associa  o nem¨¢tode/inseto
%K Scolitus intricatus
%K Bursaphelenchus eremus
%K nematode/beetle association
%U http://www.scielo.oces.mctes.pt/scielo.php?script=sci_arttext&pid=S0870-63522011000200012