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    Can attractant combined yellow sticky traps be used integrated pest management of invasive chestnut gall wasp [Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae)]?
    (Springer Int Publ Ag, 2025) Sarikaya, Oguzhan; Gencal, Tutku; Kadiogullari, Ali Ihsan; Yildiz, Yafes; Sarikaya, Ayse Gul; Gencal, Burhan; Sen, Ismail
    The chestnut gall wasp, Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae), was detected for the first time in Turkiye in 2014. The effectiveness in trapping the chestnut gall wasp by using sticky attractant traps combined with attractants during its active flying period was determined. The combination of yellow sticky traps with a mixture of 90% beer and 10% granulated sugar can have a significant impact on the populations of the pest. This method offers a high success rate in chestnut production regions due to reasons such as their success in attracting chestnut gall wasp adults, the fact that they do not have any negative effects on biological control studies carried out using Torymus sinensis, and offers an effective solution for chestnut gall wasp control without negative effects on nature and the environment.
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    Current and Future Potential Distribution Areas of Carphoborus mininius (Fabricius, 1798) in Turkey
    (Polish Acad Sciences, Inst Systematics Evolution Animals, 2020) Sen, Ismail; Sarıkaya, Oğuzhan; Orucu, Omer Kamil
    Our study aims to model the current and future (2041-2060 and 2081-2100) distribution areas of Carphoborus minimus (Fabricius, 1798) according to SSP2 and SSP5 emission scenarios. Current and future potential distribution areas of the species were predicted using the maximum entropy (MaxEnt) method and the MIROC6 climate change model. Finally, change analysis was performed to reveal the distributional changes between the present and future distribution ranges of the species. Our study has made it clear that the most impactful bioclimatic factors on the distribution of the species are temperature seasonality, isothermality, and precipitation of the driest quarter. Model results showed that the suitable distribution range for C. minimus is western and southern Anatolia. Models presented that the species will expand its distribution area through northern Anatolia in the 2050s and 2090s due to the changing ecological environment. In addition to that, the results of the change analysis showed that suitable distribution areas for the species will increase between 7% and 13.5% with time. Therefore, the species can become a new threat to the forests of Northern Anatolia. As a result, state forestry authorities should take precautions against this bark beetle species in the pine stands of northern Turkey in the future. Moreover, land-use plans should be developed to prevent the degradation of forest areas and to plan suitable trees for afforestation.
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    Larvicidal Effect of Some Essential Oils Against Larvae of the European Pine Sawfly [Neodiprion Sertifer (Geoff.)]
    (Int Journal Lifescience & Pharma Research, 2022) Sarikaya, Oguzhan; Sarikaya, Ayse Gul; Sen, Ismail; Gencal, Tutku
    Many of the species that cause damage to pine trees by feeding on needle leaves, and trees without leaves may be vulnerable to secondary pests as well as increment loss. One of the important leaf pests that damage Turkish red pine (Pinus brutia) and the Anatolian Black pine (Pinus nigra A.Rich) in Turkey is the pine sawfly Neodiprion sertifer (Geoff.). Only mechanical and chemical control methods are carried out with this pest. Due to the negative effects of chemical control methods on the ecosystem and nature, alternative methods have come to the fore front in recent years. One of them is the use of essential oils against harmful insects. The aim of the study is determine to larvicidal effects of some essential oils against larvae of N. sertifer. To achieve of this aim our objective is applied three different dosages (0.1%, 0.5% and 1.0%) of essential oils obtained from Eucalyptus camaldulensis, Melissa officinalis and Origanum onites plants to the 4th and 5th instar larvae of pine sawfly. Trials were carried out in the laboratory under controlled conditions ( 25 +/- 5 degrees C temperature and 65 +/- 5% proportional humidity). Dead larvae in each box were counted 12, 24, 36 and 48 hours after application. According to the application dosages, the highest deaths of N. sertifer larvae occurred at 1% doses of all three essential oils. It was observed that the larval mortality rates increased as the dosages increased. As a result, essential oils of all three plant species were found to be hopeful in the controlling of N. sertifer, of which essential oil of O.onites was found more effective on the 4th and 5th instar larvae than the essential oils of the other two plant species. They have shown that essential oils can be a potential alternative to synthetic insecticides in the control of pine sawfly.
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    MAXIMUM ENTROPY (MAXENT) MODELLING FOR PREDICTING THE POTENTIAL DISTRIBUTION OF PHLOEOSINUS AUBEI (PERRIS, 1855) (COL.: CURCULIONIDAE, SCOLYTINAE) AS RISING THREAT FOR CUPRESSUS SEMPERVIRENS L. TREES IN TURKEY
    (Health & Environment Assoc, 2019) Orucu, Omer Kamil; Sen, Ismail; Sarıkaya, Oğuzhan
    Cupressus sempervirens is one of the main elements of the cultural landscape of the Mediterranean coast. It can be preferred for the purpose of closing the unwanted views as aesthetic and decorative, reinforcing the beauty of the landscape, increasing the value of architectural works and historical works. Phloeosinus aubei (Perris, 1855) is an important bark beetle species (Col.: Curculionidae, Scolytinae) that attacks to the Cupressaceae family. It was determined as an important pest of cypress in some European countries. Also, it is observed that the expantion and epidemy potential of P. aubei has been increasing especially through to the Mediterranean region of Turkey on Cupressus sempervirens, Juniperus communis, J. excelsa and Thuja species in Turkey. This study was conducted to modelling the current and future (2050 and 2070) distributions of Phloeosinus aubei in Turkey according to RCP4.5 and RCP8.5 (Representational Concentration Pathways) climate change scenarios. Results showed that Phloeosinus aubei will expand its range towards Aegean region of Turkey.
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    Modelling the potential distribution of the endemic oak Quercus vulcanica Boiss. & Heldr. ex Kotschy in Turkey from the last interglacial to the future: From near threatened to endangered
    (Bogucki Wydawnictwo Naukowe, 2022) Sarikaya, Ayse Gul; Orucu, Omer Kamil; Sen, Ismail; Sarikaya, Oguzhan
    The aims of this study are to model past (LIG, LGM and Mid-Holocene), present and future (2050 and 2070) distributions of the Quercus vulcanica Boiss. & Heldr. ex Kotschy by using Maximum Entropy, and to predict suitable areas for the conservation of the species for future planning. MaxEnt distribution modeling was used to model distributions. Results for past bioclimatic conditions show that the distribution area of the species expanded and then contracted (LIG to LGM and LGM to HOL). The modelling shows that the distribution range of the species will be narrower in the future. The species will be facing extinction towards 2070. Therefore, the conservation status of the species should be evaluated according to the present findings. Although the largest population of the Q. vulcanica is found in Isparta and Afyonkarahisar Provinces located in Southwestern Turkey, this area will not be suitable for the growth and survival of the species in the future. For this reason, a new nature reserve area should be established in a more suitable climate.
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    Predicting the future distributions of Calomicrus apicalis Demaison, 1891 (Coleoptera: Chrysomelidae) under climate change
    (Springer Heidelberg, 2022) Sen, Ismail; Sarikaya, Oguzhan; Orucu, Omer K.
    Climate change is one of the main drivers of the changes in the distribution of species in the twenty-first century. Thus, the number of studies on the prediction of the effects of climate change on species is increasing day by day. Calomicrus apicalis is a pest leaf beetle (Coleoptera: Chrysomelidae) species which only distributes in Cyprus, Syria, and Turkey. The species causes important damages especially on Taurus cedar (Cedrus libani) stands of Turkish forests and also feeds on Pinus brutia, P. nigra, and P. sylvestris trees. This study aims to model the current and future (2041-2060 and 2081-2100) distribution of this pest species according to SSP2 and SSP5 emission scenarios given by the MIROC6 climate change model. Maximum entropy (MaxEnt) modeling was used to determine the current and future potential distribution of the species. Also, post-modeling analyses were performed to reveal the changes in both spatial distribution and niche suitability of the area (according to presence probability classes) between present and future distribution ranges of the species. The most important bioclimatic variables which shape the range of the species were precipitation of driest quarter, temperature seasonality, and precipitation of driest month. As a result of the study, it is determined that the current distribution of the species could be wider than its known distribution range. Most of all, the whole of the Aegean Region is a highly suitable area for the species. According to our models, the distribution of the species under climate change will expand toward the Sivas Province from the present to 2041-2060 and 2081-2100. However, the distribution of the species will shrink considerably from 2041-2060 to 2081-2100 because of changing climate. According to the change analysis, highly suitable areas for the species will decrease by around 36% and 15% by 2081-2100 according to the SSP2 and SSP5 scenarios, respectively. Although the distribution of the species will shrink in the future, the species should be observed up to 2041-2060 because it will distribute more widely in this period (current to 2041-2060) and cause damages in weakened trees due to drought stress.