PARASITOIDS OF CHLOROPHORUS DAMASCENUS (CHEVROLAT) (COLEOPTERA: CERAMBYCIDAE) IN VINEYARDS OF SOUTHEASTERN ANATOLIA REGION

The survey was conducted during the period 2019-2022 in the vineyard areas of Diyarbakır, Mardin, Elazığ, Batman, and Şanlıurfa provinces. Studies were carried out to identify parasitoids of the wood-tissue pest Chlorophorus damascenus, which has recently become a problem in vineyard areas that are old and exposed to stress factors. Dolichomitus populneus (Ratzeburg, 1848) (Hymenoptera: Ichneumonidae), and Iphiaulax impostor (Scopoli, 1763) (Hymenoptera: Braconidae) were obtained from Chlorophorus damascenus. C. damascenus was a new host for D. populneus

The toxicity assessment of phosmet on development, reproduction, and gene expression in Daphnia magna

The use of pesticides to control pests, weeds, and diseases or to regulate plant growth is indispensable in agricultural production. However, the excessive use of these chemicals has led to significant concern about their potential negative impacts on health and the environment. Phosmet is one such pesticide that is commonly used on plants and animals against cold moth, aphids, mites, suckers, and fruit flies. Here, we investigated the effects of phosmet on a model organism, Daphnia magna using acute and chronic toxicity endpoints such as lethality, mobility, genotoxicity, reproduction, and gene expression. We performed survival experiments in six-well plates at seven different concentrations (0.01, 0.1, 1, 10, 25, 50, 100 μM) as well as the control in three replicates. We observed statistically significant mortality rates at 25 µM and above upon 24 h of exposure, and at 1 µM and above following 48 h of exposure. Genotoxicity analysis, reproduction assay and qPCR analysis were carried out at concentrations of 0.01 and 0.1 μM phosmet as these concentrations did not show any lethality. Comet assay showed that exposure to phosmet resulted in significant DNA damage in the cells. Interestingly, 0.1 μM phosmet produced more offspring per adult compared to the control group indicating a hormetic response. Gene expression profiles demonstrated several genes involved in different physiological pathways, including oxidative stress, detoxification, immune system, hypoxia and iron homeostasis. Taken together, our results indicate that phosmet has negative effects on Daphnia magna in a dose- and time-dependent manner and could also induce lethal and physiological toxicities to other aquatic organisms

The Examination of the Relatıonship Between Nomophobia, Coping With Stress and Perceived Social Support Levels of Adolescent Students

Yüksek Lisans TeziBu araştırmanın amacı ergenlerin nomofobi, algılanan sosyal destek ve stresle başa çıkma düzeyleri arasındaki ilişkiyi incelemektir. Bu amaçla araştırmanın çalışma grubunu 2020-2021 eğitim öğretim yılında Şanlıurfa ili merkez ilçelerinin çeşitli ortaokul ve liselerinde ve farklı sınıf düzeylerinde öğrenimine devam eden 553‟ü (%69,7) kız, 240‟ı (%30,3) erkek olmak üzere toplam 793 öğrenci oluşturmuştur. Katılımcıların kişisel bilgilerini belirlemek amacıyla "Kişisel Bilgi Formu‟, nomofobi düzeylerini belirlemek amacıyla "Nomofobi Yaygınlığı Ölçeği", algılanan sosyal destek düzeylerini belirlemek amacıyla "Çok Boyutlu Algılanan Sosyal Destek Ölçeği‟ ve stresle başa çıkma düzeylerini belirlemek amacıyla da "Ergenler İçin Başa Çıkma Ölçeği" kullanılmıştır. Verilerin analizinde değişkenler arasındaki ilişkiyi ortaya koymak amacıyla Pearson Momentler Çarpım Korelâsyon Katsayısı ve ilgili değişkenlerin sosyo-demografik bilgiler açısından incelenmesi amacıyla T Testi ve Anova Testi kullanılmıştır. Araştırmanın sonuçlarına göre nomofobi ile aktif başa çıkma arasında negatif yönde düşük düzeyde, nomofobi ile kaçınan başa çıkma arasında pozitif yönde düşük düzeyde, nomofobi ile olumsuz başa çıkma arasında pozitif yönde düşük düzeyde anlamlı ilişkiler elde edilmiştir. Ayrıca algılanan sosyal destek ile aktif başa çıkma arasında pozitif yönde orta düzeyde, algılanan sosyal destek ile kaçınan başa çıkma arasında negatif yönde düşük düzeyde, algılanan sosyal destek ile olumsuz başa çıkma arasında negatif yönde düşük düzeyde anlamlı ilişkiler ortaya çıkmıştır. Nomofobi düzeylerinin cinsiyet, sınıf düzeyi, okul türü, günlük ortalama telefon kullanım süresi değişkenlerine göre anlamlı şekilde farklılaştığı ancak kardeş sayısı, anne eğitim durumu ve baba eğitim durumu değişkenlerine göre anlamlı şekilde farklılaşmadığı görülmüştür. Ayrıca algılanan sosyal destek düzeylerinin yalnızca kardeş sayısı değişkenine göre anlamlı şekilde farklılaştığı ancak cinsiyet, sınıf düzeyi, okul türü, anne-baba eğitim durumu ve günlük ortalama telefon kullanım süresi değişkenlerine göre anlamlı şekilde farklılaşmadığı görülmüştür. Son olarak stresle başa çıkmanın alt boyutlarının ise yalnızca cinsiyet, kardeş sayısı ve günlük ortalama telefon kullanım süresi değişkenlerine göre anlamlı şekilde farklılaştığı ancak diğer değişkenlere göre anlamlı şekilde farklılaşmadığı görülmüştür. Araştırmadan elde edilen bulgular ve sonuçlar ilgili literatür ışığında tartışılmıştır.The purpose of this research is to investigate relationship between nomophobia, perceived social support and the levels of coping with stress of adolescents. For this purpose, 793 high school students (553 (69.7%) female and 240 (30.3%) male students) who continue their education from several high schools in central district of ġanlıurfa in 2020-2021 academic year constitute the study group of this research. In this research, Personal Information Form created by researcher, Nomophobia Prevalence Scale for the datas concerning behavior of nomophobia, Multidimensional Perceived Social Support Scale for the datas concerning level of perceived social support and Coping For Adolescents Scale for the datas concerning coping with stress were used for data collection tools. Pearson Moment Correlation Coefficient, T Test, Anova Test and other variables were used to reveal the relationship between variables in the analysis of the data. According to the result of research, it is observed that there are significant relations between the nomophobia, perceived social support and coping with stress. It is found that there are significant relations negatively low level between nomophobia and active coping with stress and positively low level between nomophobia and avoidant coping with stress. Besides, it is found that there are significant relations positively middle level between perceived social support and active coping with stress and negatively low level between perceived social support and avoidant coping with stress and negatively low level between perceived social support and negative coping with stress. It was found that nomophobia of adolescents differed significantly according to gender, grade level, school type and daily time of smart phone usage variables but it didn‟t differ significantly according to the number of siblings and parental education status variables. Besides, it was found that perceived social support of adolescents differed significantly according to only the number of siblings variable but it didn‟t differ according to gender, grade level, school type, daily time of smart phone usage and parental education status variables. Lastly, it was found that lower dimensions of coping with stress differed significantly according to only gender, the number of siblings and daily time of smart phone usage variables but it didn‟t differ significantly according to other variables. Findings from research and results were discussed in the light of the literature

Investigations on biological characteristics of Pseudococcus comstocki (Kuwana) (Hemiptera: Pseudococcidae) on different two mulberry species and different temperatures

Asya kökenli unlubit Pseudococcus comstocki (Kuwana) (Hemiptera: Pseudococcidae) polifag kozmopolit bir türdür. Son yıllarda Avrupa ülkelerinde hızla yayılan bu tür daha geniş bir dağılıma sahip olmaktadır. Bu çalışmada P. comstocki’nin farklı sıcaklık koşullarında (18, 23, 28 ve 20-32°C) ve iki farklı dut türü (Morus alba ve M. nigra) (Moraceae) üzerinde gelişme dönemlerinin süresi, ölüm oranları, üreme kapasitesi, dişi-erkek oranları, termal konstantı ve gelişme eşiğinin belirlenmesi amaçlanmıştır. Çalışma sonucunda M. nigra üzerinde beslenen popülasyonun (rm= 0.123 dişi/dişi/gün; R0= 108.933 dişi/dişi; T0= 38.160 gün; DT= 5.639 gün) M.alba üzerinde beslenen popülasyondan (rm= 0.115 dişi/dişi/gün; R0= 84.281 dişi/dişi; T0= 38.600 gün; DT= 6.032 gün) daha iyi geliştiği tespit edilmiştir. P. comstocki’nin sıcaklığa bağlı olarak gelişimi incelendiğinde türün en hızlı 28°C’de ergin olduğu belirlenmiştir. Zararlının M. nigra’da gelişme eşiğinin (t) 7.87°C, termal konstantının (ThC) K= 513 gün-derece; M. alba’da gelişme eşiğinin (t) 7.76°C, termal konstantının (ThC) K= 518 gün-derece olduğu saptanmıştır.Asiatic originated Pseudococcus comstocki (Kuwana), the Comstock mealybug (Hemiptera: Pseudococcidae) is polyphagous cosmopolite species. Nowadays it is spreading through to Europe and becoming wide distribution. In this study, the developmental time, survival and fecundity of P. comstocki on two mulberry species (Morus alba and M. nigra) (Moraceae) were studied at four different temperatures (18±1, 23±1, 28±1 and 20-32°C) and thermal constant was calculated. According to results, it appears that performance of P. comstocki and, consequently, its population increase were affected by feeding with different mulberry species and at different temperatures, and M. nigra seems to be more likely susceptible to the mealybug than M. alba in each temperatures because it displayed the highest performance on this host plant. The results showed that the population on M. nigra (rm = 0.123 female/female/day; R0 = 108.933 female/female; T0= 38.160 day; DT= 5.639 day) developed better than that on M. alba (rm= 0.115 female/female/day; R0 = 84.281 female/female; T0= 38.600 day; DT= 6.032 day) at 28°C. It was found that there was an inverse relationship between the growth period of the population and the temperature, development of the mealybug becoming fully grown was the fastest on both Morus species at 28 °C. The threshold for development (t) and the thermal constant (ThC) of the mealybug on M. nigra was determined as 7.87 °C, K = 513 degree-days respectively; while on M. alba, these parameters were found to be 7.76 °C and K = 518 degree-days respectively

First Observation of Variimorda (Variimorda) holzschuhi Horák, 1985 (Coleoptera: Mordellidae) as a Woodborer on Vitis vinifera L.; Possible Pest or Co-Occurrent Species?

Variimorda holzschuhi Horák, 1985 (Coleoptera: Mordellidae: Mordellini) is recorded as a wood-boring beetle on grape- vines in the Aricak District (Elâzığ Province, Turkey). The record represents the first observation of a species of Variimorda Méquignon, 1946 developing inside and possibly harming the trunk of a cultivated plant. The condition of discovery and possible association with other beetles are presented and discussed

The Relationship between Mobbing Towards Teachers and Psychological Resilience in Educational Institutions

In this study, the relationship between the mobbing experienced by the teachers in the Dulkadiroğlu district of Kahramanmaraş, Turkey, and their psychological resilience was investigated. The sample of this study was formed by a randomly selected group of 290 teachers. Psychological Mobbing Scale (Ocak, 2008) and Psychological Resilience Scale (Işık, 2016) were used in the study, and the data obtained were analyzed using correlation and regression techniques. Findings of the study revealed that there is a negative and significant relationship between the mobbing that teachers are exposed to and their psychological resilience. In addition, it was also found that the mobbing experienced by the teachers is a significant predictor of their psychological resilience