Naslov (eng)

Gypsy moth predators, parasites and pathogens in Belgrade forests in the period 2010-2011

Naslov (srp)

Predatori, parasiti i patogeni gubara u šumama Beogradskog područja u periodu 2010-2011. godine

Autor

Tabaković-Tošić, Mara

Publisher

Opis (srp)

Izvod: U jesen 2010. godine u šumama kojima gazduje šumsko gazdinstvo Beograd, Šumske uprave Avala i Lipovica, prisustvo gubara je ustanovljeno na 4066,74 ha, dnosno 1418,95. Kada su u pitanju intenziteti napada, u 2010. Godini na 2066.68 ha (50.8%) je registrovan srednji, na 984.80 ha (24.2%) jak i slab na 922.37 ha (22.7%). Vrlo jak intenzitet, sa više hiljada legala/ha, zabeležen je na relativno maloj površini od 92.89 ha (2.3%), što je i očekivano budući da se radi o progradacionoj fazi gradacije. U jesen 2011 godine evidentirano je značajno umanjenje površina pod napadom, kao i intenziteta napada, što ukazuje na to da je nastupila retrogradaciona faza i da će gubar u narednoj godini u području ove dve šumske uprave ući u fazu latence. Slab intenzitet napada registrovan je na površini od 912.67 ha (64.3%), srednji na 291.66 ha (20.55%), jak na 94.38 (6.65%) i vrlo jak na 120.24 (8.5%) ha. Ukupna napadnuta površina u području navedene dve šumske uprave iznosila je 1418.95 ha. U istraživačkom eriodu, u populacijama gubara, registrovana je aktivnost 24 vrste njegovih prirodnih neprijatelja i to dvanaest predatora, jedanaest parasita i jedan pathogen. Stadijumi jajeta i larve gubara bili su na udaru jednakog broja (po 6 vrsta) predatora. Parasitskih vrsta larvi gubara je bilo 6, jaja 2, a lutki 3. Za sada je identifikovan samo jedan pathogen. Kada je u pitanju brojnost pojedinih vrsta, najvišu abundanciju od predatora su imali Allotrombium fuliginosum (Hermann) i Calosoma sycophanta Linnaeus, a od parazita Anastatus japonicus Ashmead I Oencyrtus kuwanae (Howard). Takođe, na pojedinim lokalitetima dominantnu ulogu u redukciji brojnosti gubara imao je Lymantrya dispar nucleopolyhedrosis virus.

Opis (eng)

Abstract: In the autumn 2010, the gypsy moth occupied an area of 4,066.74 hectares and 1,418.95 hectares, respectively, of the Forest Administrations Avala and Lipovica, managed by the Forest Estate Belgrade. Regarding the intensity of the infestation in 2010, the area of 2,066.68 hectares (50.8%) was subject to the moderate infestation, the area of 984.80 hectares (24.2%) was subject to the severe infestation, and the area of 922.37 hectares (22.7%) was subject to the light infestation. A relatively small area, i.e. 92.89 hectares (2.3%), was subject to the very severe infestation, i.e. there was a few hundred egg masses/hectare, which was expected as it is typical for the progradation phase of the outbreak. In the autumn 2011 the considerable decrease in the area infested by the gypsy moth and the considerable lower intensity of the infestation were reported, which reflected the retrogradation phase and implied that the gypsy moth reported in these two forest administrations would be in the latency phase in the following year. The area of 912.67 hectares (64.3%) was subject to the light infestation, the area of 291.66 hectares (20.55%) was subject to the moderate infestation, the area of 94.38 hectares (6.65%) was subject to the severe infestation, and the area of 120.24 hectares (8.5%) was subject to the very severe infestation. The total area infested by the gypsy moth in these two forest administrations was 1,418.95. During the observed period, in the gypsy moth population, the activity of 24 natural enemies of this insect - twelve predators, eleven parasites and one pathogen were reported. The egg and larval instars of the gypsy moth were infested by the same number (6 species) of predators. There were 6 parasitic species of the gypsy moth larvae, 2 parasitic species of the gypsy moth eggs, and 3 parasitic species of the gypsy moth pupae. Regarding the density of some species, the most abundant predators were Allotrombium uliginosum (Hermann) and Calosoma sycophanta Linnaeus, while the most abundant parasites were Anastatus japonicus Ashmead and Oencyrtus kuwanae (Howard). In addition, at some sites Lymantrya dispar nucleopolyhedrosis virus had the dominant role in the reduction of the gypsy moth density.

Jezik

engleski

srpski

Datum

2011

Licenca

© All rights reserved

Predmet

Key words: the gypsy moth, outbreak, natural enemies

Ključne reči: gubar, gradacija prirodni neprijatelji

Deo kolekcije (2)

	o:6206	Zbornik Radova Instituta za šumarstvo
	o:1347	Radovi Instituta za šumarstvo