broj: 1-2/2012
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| RIJEČ UREDNIŠTVA | ||
| Uredništvo | ||
| DEPARTURE OFA MAN WHOSE EDITORIALSHIP LEFT A PERMANENT AND UNERASABLE TRACE IN OUR JOURNAL pdf HR EN | 1 | |
| IZVORNI ZNANSTVENI ČLANCI | ||
| Škvorc,Ž., K.Sever, J.Franjić, D.Krstonošić, M.Poljak | UDK 630* 114.2 + 561 - 562 (Quercus roburL.) (001) | |
| Photosyntesis Intensity andVegetative Growth of Pedunculate Oak (Quercus roburL.) in Common-Garden Experiment pdf HR EN | 7 | |
| Diminić,D., N.Potočić, I.Seletković | UDK 630* 232 + 443 (Pinus nigra Arnold) (001) | |
| The Role of Site in Predisposition ofAustrian Pine (Pinus nigraArnold) to Pathogenic FungusSphaeropsis sapinea(Fr.) Dyko et Sutton in Istria (Croatia) pdf HR EN | 19 | |
| Andrašev,S., M.Bobinac, S.Rončević, M.Vučković, B.Stajić, G.Janjatović, Z.Obućina | UDK 630* 232.5 + 242 (001) | |
| Effects of Thinning in a Plantation of Poplar Clone I-214 withWide Spacing pdf HR EN | 37 | |
| PRETHODNO PRIOPĆENJE | ||
| Matošević, Dinka | UDK 630* 453 (Aproceros leucopoda) | |
| First record of Elm Sawfly (Aproceros leucopoda), new Invasive Species in Croatia pdf HR EN | 57 | |
| Summary: An invasive sawfly (Aproceros leucopoda; Hymenoptera, Argidae) has been attacking elms (Ulmus sp.) in Europe. It orginates from Japan and has been first recorded in Europe in 2003. In the paper the occurrence of A. leucopoda in Croatia is reported for the first time and prognosis of future dispersal and damages is given. Potential host plants of A. leucopoda are all native and introduced elm species in Europe. The sawfly has up to 4 generations per year and parthenogenetic reproduction, After six larval instars, eonymphs make loosely spun cocoons on the leaves (Figure 3 ). Adults (Figure 4) lay eggs along leaf margins. Young larvae (Figure 5) make distinctive zigzag feeding tracks on leaves (Figure 1 ), older larval instars devour the whole leaf and only midveins are left (Figure 2 ). The larve can completely defoliate elm trees which was the case in Japan, Hungary, Italy, Poland and Romania. A. leucopoda was first recorded in Croatia in 2011 on several locations (Table 1, Figure 6). On the leaves a tipical zigzag feeding tracks were recorded, larvae and cocoons were found and adults were raised from the colected cocoons. The species was identified with the help od the key in Blank et al. (2010). The number of generations per year was not determined. The damage on the elm trees in Croatia was not severe, no defoliation was observed and only single leaves were completely consumed. A. leucopoda can be considered as invasive species in Europe and Croatia, it can be expected that the sawfly will disperse to other parts of Croatia (to forests and urban trees) in the coming years. The sawfly will disperse actively (females are strong flyers) and passively (with traded material and vehicles). Complete defoliation of elm trees in Croatia can not be excluded in the coming years. Key words: damage; elm; invasive species; prognosis of dispersal; sawfly | ||
| STRUČNI ČLANCI | ||
| Matović,B., M.Koprivica, Z.Maunaga | UDK 630* 527 + 521 | |
| Application of Generalized Taper Model of Norway Spruce Tree in Forestry Practice pdf HR EN | 63 | |