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    The Determination of Harmful Hymenoptera and Lepidoptera Species in Forest Nurseries in the Western Black Sea Region of Türkiye
    (Kastamonu Univ, 2024) Ozturk, Nuray; Yuksel, Besir; Baysal, Ismail; Akbulut, Suleyman
    Aim of the study: The aim of this study was to determine the harmful Hymenoptera and Lepidoptera species in some forest nurseries between 2021 and 2022. Area of study: The study areas were selected from forest nurseries located in the Western Black Sea Region of Turkiye. Material and methods: Visual inspections were performed on plants, then larvae and gall samples were collected by hand and photographed on host plants. Gall wasps were reared with the galls and examined by scanning electron microscopy. Collected caterpillars and sawfly larvae samples were placed with the host plant in an insect rearing cage for adult emergence under constant conditions. The oak gall wasp was also identified by molecular methods. Main results: In this study, four species of Hymenoptera and six species of Lepidoptera were determined. These are Dryocosmus kuriphilus, Diprion pini, Craesus septentrionalis, Hyphantria cunea, Euproctis chrysorrhoea, Calliteara pudibunda, Dioryctria simplicella, Phalera bucephala and Acronicta rumicis. The oak gall wasp was identified as Cynips quercusfolii with 97.87% identity. Research highlights: Amog these species, C. septentrionalis was new record for the insect fauna of the Western Black Sea Region. In addition, C. pudibunda and P. bucephala were reported for the first time from Kastamonu province.
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    First report of Thanasimus femoralis (Zetterstedt, 1828) (Coleoptera: Cleridae) in forest nursery in the Western Black Sea Region of Turkiye
    (Czech Academy Agricultural Sciences, 2023) Ozturk, Nuray; Yuksel, Besir
    In this study, the first observation of Thanasimus femoralis was conducted in Turkiye. Adults of T. femoralis and Thanasimus formicarius were collected from pheromone traps together with Ips sexdentatus, Ips acuminatus, Ips mannsfeldi, and Scolytus intricatus in forest nurseries located in the Western Black Sea Region, between 2021 and 2022. The clerid and bark beetles were morphologically described. The aedeagus and antennae of T. femoralis were observed by scanning electron microscopy.
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    Preliminary survey of nematodes associated with broadleaved trees in Izmit Forest Management Directorate, Turkey
    (Wiley, 2020) Tasdemir, Sinan; Akbulut, Suleyman; Kanzaki, Natsumi; Ozturk, Nuray
    A survey for Bursaphelenchus species was carried out in broadleaf forest sites of Izmit Forest Management Directorate. Nematodes were extracted from 128 wood samples, and 22 of them were cultured. Nematodes were identified using morphological characteristics and molecular analysis by amplifying D2-D3 LSU with primers. Only one Bursaphelenchus species, Bursaphelenchus mucronatus kolymensis, was isolated from Quercus petraea representing the first report from broadleaved tree species in Turkey. Paraphelenchus acontioides and Aphelenchoides heidelbergi were identified and presented herein as the first reports of these two species from Turkey. In addition, five Aphelenchoides species were also found and reported as Aphelenchoides sp.
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    Some physiological and biochemical changes In oak trees after fire
    (Univ Federal Lavras-Ufla, 2023) Kabaoglu, Ali; Kulac, Semsettin; Baysal, Ismail; Ozbayram, Ali Kemal; Akbulut, Suleyman; Ozturk, Nuray
    Background: Forest fires are considered integral parts of many forest ecosystems despite being a disaster influencing the forest ecosystem dynamics significantly. A fire that occurred within the borders of Duzce-Konuralp State Forest Enterprise affected 16 ha of oak forest. The present study aimed to investigate the physiological and biochemical changes in two oak species (Quercus pubescens and Q. cerris) at post-fire period. For this purpose, seasonal shoot and leaf samples were collected from 15 trees (5 trees from high and low fire intensity and control groups) for each oak species. The samples were subjected to xylem, water potential, and stomatal conductivity analysis in the field and carbohydrate concentration and proline analyses in the laboratory. Results: It was found that leaf surface area decreased, and the root-leaf water connection was broken depending on the intensity of the fire. As the fire severity increased, water potential and stomatal conductivity of trees increased; proline and carbohydrate concentration amounts decreased. Q. pubescens had lower water potential and stomatal conductivity than Q. cerris but higher proline and carbohydrate concentration amounts. Conclusion: Q. pubescens was more resistant to drought stress during the post-fire season than Q. cerris from the aspect of physiological and biochemical characteristics.