Gonca Ece ÖZCAN, Aklan Hazan AKINCI, Mahmut EROĞLU

Ladin ormanlarında Dendroctonus micans (Kugelann) (Coleoptera: Scolytidae)' ın zarar durumu ve Rhizophagus grandis (Gyllenhal) (Coleoptera: RHizophagidae)' in zararlının populasyonuna etkisi

Bu çalışma Türkiye'nin Doğu Karadeniz Bölgesi'nde Dendroctonus micans (Kugelann) (Coleoptera: Scolytidae)'ın ve özgün predatörü Rhizophagus grandis (Gyllenhal) (Coleoptera: Rhizophagidae)'in sırasıyla son 20-30 ve 10-15 yıldır aktif olduğu Doğu ladini ormanlarında yürütülmüştür. 33 deneme alanında toplam 1186 ağaç incelenmiştir. Bu ağaçların 793'ü ladindir. D. micans ladin ağaçlarının % 24,6'sına zarar vermiştir. Yaralı ağaçların % 88'i D. micans zararına uğramıştır. 58 ağaç üzerinde toplam 540 D. micans ergini sayılmıştır. Erginlerin % 52,4'ü aynı deneme alanında 3 ağaçta saptanmıştır. 20 deneme alanında 41 ağaç üzerinde toplam 2905 larva ve 5 deneme alanında 7 ağaç üzerinde 177 pupa sayılmıştır. Larvaların % 60,4'ü 4 deneme alanında 10 ağaç üzerinde ve pupaların % 91,5'i 3 ağaç üzerinde saptanmıştır. Toplam 384 R. grandis larva ve ergini ile değişik biyolojik dönemlerdeki 997 D. micans bireyi bir arada bulunmuştur. R. grandis'in, bulunduğu D. micans galerilerindeki, deneme alanlarındaki ve tüm örnekleme alanındaki etkinliği sırasıyla % 84, % 24 ve % 15' dir.

Pest status of Dendroctonus micans(Kugelann) (Coleoptera: Scolytidae) and the effect of RHizophagus grandis (Gyllenhal) (Coleoptera: RHizophagudae) on the population of dendroctonus micans in the oriental spruce forests of Turkey

Pest status of Dendroctonus micans (Kugelann) (Coleoptera: Scolytidae) and the effect of Rhizophagus grandis (Gyllenhal) (Coleoptera: Rhizophagidae) on the population of Dendroctonus micans in the oriental spruce forests of Turkey This study was conducted in oriental spruce forests in the Eastern Black Sea Region of Turkey where Dendroctonus micans (Kugelann) (Coleoptera: Scolytidae) and its specific predator, Rhizophagus grandis (Gyllenhal) (Coleoptera: Rhizophagidae), have been active for the last 20-30 and 10-15 years, respectively. A total of 1186 trees were examined in 33 different areas. Of these trees, 793 were spruce. D. micans damaged 24,6 % of spruce trees. Eighty eight percent of wounded trees was damaged by D. micans. A total of 540 D. micans adults were counted on 58 trees. 52,4 % of the adults were recorded on 3 trees in the same experimental plot. A total of 2905 larvae were counted on 41 trees in 20 experimental plots and 177 pupae were counted on 7 trees in 5 plots. Sixty point four percent of larvae was recorded on 10 trees in 4 experimental plots and 91,5 % of the pupae were recorded on 3 trees. A total of 384 R. grandis larvae and adults were recorded together with a total of 997 D. micans individuals in different developmental stages. The effectiveness of R. grandis on D. micans in the galleries, in the experimental plots and in whole area was 84 %, 24 % and 15 %, respectively.

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