Yalova Province Research Articles

Changes in fruit quality properties and phytochemical substances of kiwifruit (Actinidia deliciosa) grown in different agro-ecological conditions during cold storage

BackgroundThe changes in the physical structures of the products are the first things that consumers pay attention to. Therefore, it is essential and significant importance to take measures to improve the storage conditions of products and to minimize quality losses. The main objective of the study was to evaluate the effects of agro-ecological conditions on bioactive compounds and fruit quality of kiwifruit during cold storage. The ‘Hayward’ kiwifruit cultivar grown in Ordu, Giresun, Samsun, Rize, and Yalova provinces of Türkiye were kept at 0 ± 0.5 °C and relative humidity of 90 ± 5% for 150 d.ResultsThe kiwifruit obtained from the provinces of Yalova, Ordu, and Giresun experienced the least weight loss during cold storage. Kiwifruit from Samsun and Yalova provinces had the lowest fruit firmness, while those from Giresun had the highest on 150th d. The changes were observed in the skin and flesh colors of the kiwifruit belonging to all cultivation areas. The amount of vitamin C increased throughout the study in all ecological conditions, but the Yalova province’s kiwifruit was found to have the highest levels. Additionally, in all ecologies, kiwifruit showed an increase in antioxidant activity, total phenolics, and total flavonoids, all known to have beneficial effects on human health. The total antioxidant activity and total phenolics were highest in the kiwifruit of Yalova province, but the total flavonoids were found in the kiwifruit of Rize and Ordu provinces.ConclusionThe study’s results revealed that kiwifruit’s bioactive compounds and quality parameters may vary depending on the cultivation area. Additionally, it can be stated that Yalova province kiwifruit experiences the least amount of postharvest quality losses.

Determination of Situational Self-Criticism Levels of Athletes Engaged in Struggle Sports

The aim of this study is to determine the situational self-criticism levels of struggle athletes. The research was designed in cross-sectional survey model, one of the quantitative research methods. The population of the study consists of individuals who do combat sports in Yalova province. The sample consisted of a total of 202 athletes, 97 females and 105 males, who voluntarily accepted to participate in the study among the athletes constituting the universe. Athlete Situational Self-Criticism Scale consisting of 7 items was used as a data collection tool in the study. Statistical analyses in the study were performed using SPSS package programme. A significant difference was found between the participants according to nationality, age, sport age, education and branch variables p<0,05. As a result, it was determined that there was no difference between the situational self-criticism levels of the athletes in terms of gender and parental marital status variables. It was determined that there was a significant difference between the situational self-criticism levels of the athletes in terms of nationality, sports age, age, education and branch variables.

First report of root‐knot nematode Meloidogyne ethiopica Whitehead, 1968 on kiwifruit Actinidia deliciosa (A. Chev.) C. F. Liang and A. R. Ferguson, 1984 in Türkiye

AbstractRoot‐knot nematodes (Meloidogyne spp.) cause serious damage to kiwifruit orchards in Türkiye. In summer 2022, during a survey on root‐knot nematodes of kiwifruit in Bursa, Rize, and Yalova provinces in the country, many galls in the roots were discovered. A single egg mass was extracted from the infected roots and inoculated to Rutgers tomato and kiwi (Hayward) plants for reproduction as a pure culture. Second‐stage infective juveniles (J2), mature females with egg masses, and males were used for identification studies. Species were identified based on biochemical (esterase phenotypes), morphological, morphometric, and molecular methods. The perineal pattern observations and morphometric values were in accordance with previously reported measurements. The isozyme electrophoresis analyses revealed the species‐specific esterase phenotypes (E3) with three bands. As a result of all the methods used for diagnosis, we identified the nematode causing the infection as the root‐knot nematode Meloidogyne ethiopica. To our knowledge, this is not only the first report of M. ethiopica in Türkiye, but also the first report of this species in Europe.

Morphological Characteristics and Molecular Analysis of Newly Recorded Longidorus moesicus Lamberti, Choleva & Agostinelli, 1983 (Dorylaimida: Longidoridae) From Türkiye

Objective: This study was conducted to determine the morphological, morphometric, and molecular characteristics of Longidorus moesicus, which was first recorded in Türkiye.
 Materials and Methods: A nematode survey was conducted in rose cultivation greenhouses in 2017 in Yalova province, Türkiye. Nematodes were extracted from soil samples using Cobb's sieve method and centrifugal flotation technique. Morphological characters and morphometric measurements were used to identify the obtained nematodes. Additionally, identification was confirmed by molecular analyses of the 28S rRNA gene D2/D3 expansion region sequences.
 Results: Needle nematodes in the genus Longidorus (Micoletzky, 1922) include many ectoparasitic nematode species that transmit nepoviruses as well as causing damage by direct feeding on root cells. A Longidorus species was found in the examined soils.
 Conclusion: To our knowledge, this is the first report of Longidorus moesicus Lamberti, Choleva & Agostinelli, 1983 in Türkiye.

Dam failure analysis according to different methods in HEC-RAS, Gökçe Dam, Turkey

As in the rest of the world, the impact of climate change is clearly felt in Turkey, while the effects of global warming, drought and flood-induced disasters continue to increase day by day. At the same time, water consumption is crucial for the survival of people. Efficient water use and conservation, facilitated by water resources management, should be recognized as a pressing contemporary concern. Recently, floods that cause a great deal of damage have started to occur frequently in Turkey. A possible flood that may occur in the demolition of Gökçe Dam has been a matter of curiosity. This dam is the most important water source for Yalova province and has been in service for a long time. Therefore, the aim of this study is to examine the flood risk situations of settlements in case of a possible Gökçe Dam failure or basin flooding. Additionally, the study aims to estimate the damages that may occur in houses of flooded areas. Piping and overtopping methods were used in HEC-RAS program to create flood maps, and the Van Eck and Kok damage curves were used to assess the damages. While water level varies between 0-1 meters in the most affected buildings in the overtopping method, this level is 2-3 meters in the piping method. The damage to buildings with a water level of 4 meters and above is quite high in the piping method, and it has been observed that greater damage may occur for lower water levels in the overtopping method. The total damage and number of affected buildings are higher in the piping method. Accordingly, a possible Gökçe dam failure would cause significant losses in both methods, especially in the piping method.

Investigation of how the quality of service provided in private gyms is perceived by users (example of Yalova province)

The purpose of this study is to examine how the quality of service provided in private sports halls in Yalova is perceived by users. The sample of our study consists of a total of 121 people, 69 women and 52 men, who are voluntarily participated the study, over the age of 18 who is using private GYM’s in Yalova. The study was carried out with the survey model, which is one of the quantitative research methods, and the survey method was used. Data regarding the study were collected with the Service Quality Assessment Scale. The analysis of the data was made with the SPSS 25.0 program, and 5 sub-dimensions were analyzed according to gender data from demographic variables. According to the normality test results, suitable non-parametric tests, Mann Whitney-U test and Kruskal Wallis-H test were used(p<0.05). It was observed that female members had higher perceptions about personnel, programs, locker rooms, training facilities and physical facilities than male members. As a result of this, marketing and target audience orientation, environmental, service quality and personnel as well as individual differences can be considered to cause this perception.

Geo-Environmental Analysis on Specifying Solar Energy Power Plant (SEPP) Fields by GIS and Different Fuzzy AHP Methods

The use of solar energy among renewable energy sources has started to turn out widespread due to its potential, practicality of use and environmental friendliness. In assessing the installation sites of solar energy power plants (SEPPs) economic, social and environmental elements should be taken into consideration, and cultural and paleontological heritage areas should not be damaged. In order for decision-makers to show own predilections in some ways, the subject of this investigate is to specify the convenient fields for SEPP installation in Yalova province with all its districts by using different methods of Fuzzy Analytical Hierarchy Processes (BAHP) together with Geographic Information Systems (GIS). According to the results obtained, it has been seen that Yalova province has convenient filelds for SEPP sites in the center and east, including the Central and Çiftlikköy districts.

Examining The Attitudes Of Amateur Football Players Towards Football

In this study, it is aimed to examine the attitudes of amateur football players towards football. The study group of the research consists of 194 football players who play football actively in Sivas and Yalova provinces in the 2021-2022 season. Data collection in the study consists of two parts. In the first part, the personal information form created by the researchers was used, and in the second part, the Football Attitude Scale (FUTÖ) scale, which Kayapınar and Kaan's validity and reliability were made (2021), was used. In the analysis of the data in this study, the SPSS 25.00 package program was used, and it was evaluated at the 95% confidence interval and at the 0.05 significance level. Descriptive statistics were calculated regarding age, gender, educational status, geographical region, province and the position information of the participants in football. It was decided whether the data showed a normal distribution or not by looking at the kurtosis skewness values. In terms of statistics, Independent Sample t test, Anova test, frequency, percentage and reliability coefficient calculations were made. As a result; When the attitudes of the participants towards football in the gender variable are examined, there is a statistically significant difference in favor of the female participants between the scale total score and the sub-dimensions of the scale, social effects, performance, and psychological effects. It was seen that there was a statistically significant difference in the sub-dimensions, and there was no statistically significant difference between the province and location variables, the total score of the scale and all sub-dimensions.

Short-term wind power prediction based on DWT-PSO-LSTM

With the “carbon peaking and carbon neutrality” target, quite a few people are focusing on the development of renewable energy, especially wind power, which is the largest source of renewable energy generation and is still expanding. In aiming to make the wind power forecasts more accurate by limiting the errors between the predicted and actual values, a model combining Particle Swarm Optimization, Discrete Wavelet Transform, and Long Short-Term Memory (DWT-PSO-LSTM) is developed to predict the wind power for short periods. First, the wind power is decomposed and normalized by DWT. Then, each decomposition result is input into LSTM prediction, and the model with the good result is obtained by finding the number of nodes and learning the efficiency of the best LSTM through PSO. Finally, the full prediction results are output and then all components are summed. Simulations using open wind power data from Yalova province, Turkey, indicate that the model advanced in this article can reduce the prediction errors better than other models.

Postmodernism in Visual Arts Lesson and Its Reflections on Students

Postmodernism emerged as a movement that opposed the dominant views of modernism in the field of art. Postmodernism, which originated in architecture and gradually influenced many areas of art, is discussed in this study with a focus on painting and visual arts education. In high school programs in Turkey, it is important for students to be able to examine the past, embrace the present, the era, and the postmodern way of thinking. When the relevant literature was reviewed, it was determined that there is no research on how postmodernism is used in art education in terms of student learning outcomes. The aim of this research is to determine how high school visual arts teachers incorporate the postmodernism movement into their teaching and to identify any changes in students’ interest levels in the course. In this study, a qualitative research method was used, specifically the case study design. The sample of the study consisted of four visual arts teachers who work in one central and three district schools in Yalova province. Two semi-structured interview forms and document analysis were used as data collection tools. The findings were analyzed using thematic analysis. According to the research findings, it was determined that the participating teachers conveyed the artistic and intellectual structure of postmodernism to students through various teaching methods during the lesson process. However, they were unable to achieve all the learning outcomes related to postmodernism. The study also revealed that students demonstrated changes in the methods they preferred to employ in their artwork after learning about postmodernism and being exposed to examples of postmodern art. Moreover, students provided both positive and negative critiques, reflecting their aesthetic perspectives on postmodern artworks. This research is considered important in terms of serving as an example for teachers and contributing to the literature.

Assessing the susceptibility levels of chestnut cultivars/genotypes to Asian chestnut gall wasp (Dryocosmus kuriphilus Yasumatsu)

The Asian chestnut gall wasp Dryocosmus kuriphilus is a major insect pest affecting chestnut trees worldwide. Due to the galls that it creates on shoots and leaves, this pest prevents shoot development and blooming and decreases the fruit yield. In Türkiye, this pest was first seen in Gacık village of Yalova province in the year 2014. Today, it is seen in orchards and forests in different provinces of Marmara, Aegean, and Black Sea regions. The medium- and long-term control of this pest can be improved by making use of resistant or less-susceptible cultivars and hybrid clones. The susceptibility levels of our cultivars to this pest are not known. For this purpose, by using three infestation indicators, the susceptibility to Asian chestnut gall wasp (ACGW) of 3 hybrids (Castanea sativa x Castanea crenate) and 20 cultivars/genotypes (C. sativa), which came to the forefront via selection studies, were assessed for five years (2017-2021). The susceptibility to ACGW varied between the tested genotypes/cultivars and, since no gall development was observed in ‘YD-1’, ‘Tülü’, and ‘Ertan’ cultivars of C. sativa species, they were determined to be completely resistant to ACGW. Furthermore, the numbers of ACGW eggs on the buds of cultivars were recorded and it was found that ACGW laid eggs on the buds of all the cultivars. In microscopic analyses, it was revealed that the resistance originated from the prevention of larva development within the bud. The finding that resistant cultivars belong to C. sativa species is thought to be important for future genetic breeding programs.

Investigation of the Epidemiology of Small Ruminant Lentivirus Infections southeast part of the Marmara region of Turkey

Small ruminant lentiviruses (SRLVs) are viral pathogens that are common in goats and sheep, affect production, and cause significant economic losses in small ruminant breeding. Caprine arthritis encephalitis virus (CAEV) and Maedi-Visna virus (MVV) are prototypes of SRLVs. Both of them affect animal health and welfare in sheep and goats and cause progressive and persistent infections in the small ruminant industry. The present study aimed to reveal the epidemiological status of lentivirus infection in the sheep region in Yalova province located in the southeast part of the Marmara region and determine the circulating genotypes by conducting the sequence analysis of the samples detected positive by a molecular method and molecular characterization of the detected field strains. To that end, 231 sheep blood samples were used between May 2016 and April 2018. Based on sampling results of the PCR test and ELISA tests, 5.62% (13/231) and 5.19% (12/231) positivity rates were found in sheep, respectively. According to the ELISA test results, a significant difference was found in terms of age groups (6 months -1 age, 1-3 age, >3 age) (χ2: 6.01; p=0.04). Furthermore, the sequence analysis of the gag gene region detected the existence of the A genotype of small ruminant lentiviruses in sheep. The data obtained from the study revealed a low seroprevalence course of SRLV infection in the study area in the absence of a systematic disease control program.

Damage ratio of the Asian chestnut gall wasp, Dryocosmus kuriphilus Yasumatsu, 1951 (Hemiptera: Cynipidae) in Samsun Province of Türkiye: First Report

The Asian chestnut gall wasp Dryocosmus kuriphilus Yasumatsu (Hymenoptera, Cynipidae) is a critical pest that threatens chestnut cultivation. The chestnut gall wasp causes yield losses by deforming the buds of the infected trees. This pest, which was first detected in Italy in 2002 in Europe, was seen in Gacık village of Yalova province in 2014 in Türkiye. In the following years, it spread to Bursa, Istanbul, Sakarya, Kocaeli, Balıkesir, Bilecik, Düzce, Giresun, Bartın, Zonguldak, Sinop and İzmir provinces. In this study, the orchard of chestnut gene resources belonging to the Ali Nihat Gökyiğit research station in Samsun province was examined for the presence of the Asian chestnut gall wasp. As a result of the study, the presence of the Asian chestnut gall wasp was determined in the cultivars Marigoule' and 'Macit 55'. As a result of the counts made in 50 cm parts of the branches, it was determined that the presence of chestnut gall wasp is in a higher population in the 'Marigoule' cultivar than in the other cultivars. However, the invasion in Samsun is at the early stage.

Iraq and Lebanon International Schools and Curriculums of Religious Education: Yalova Province Example

Coğrafi konumu itibariyle Türkiye göç güzergâhı üzerinde bulunan, çevresindeki ülkelerden göç alan bir ülkedir. Göçmenlerin yaşam hakkı gibi eğitimleri de insani bir ihtiyaç ve evrensel bir haktır. Türkiye'de mültecilere sağlanan eğitim hakkı, uluslararası hukukla güvence altına alınmış ve ulusal hukuk kurallarıyla düzenlenmiştir. Bu çalışmada Yalova iliyle sınırlandırılan Irak ve Lübnan milletlerarası okullarındaki din eğitimi müfredatları, amaç, içerik ve yöntem açısından değerlendirilip müfredatın Türk DKAB eğitimi anlayışına uygunluğu karşılaştırmalı olarak ele alınmıştır. Döküman analizi yönteminin kullanıldığı bu çalışmada dini, kültürel ve coğrafi yakınlık nedeniyle Irak ve Lübnan milletlerarası okulları tercih edilmiştir. Bu okullardaki din eğitimi derslerinin tahlili, benzer veya farklı durumda olan diğer ülke okullarının din eğitimi müfredatlarının incelenmesine temel oluşturacak, müfredatlar arasında karşılaştırma yapılmasına yardımcı olacaktır. Ülkemize göç eden ailelerin zorunlu eğitim yaşında olan çocuklarının milletlerarası okullardaki din eğitimi müfredatlarının incelenmesi, din eğitimi alanında ilk olma özelliği taşımaktadır. Bu çalışmanın sayısal verilerinin ilerleyen yıllarda yapılacak olan çalışmalara kaynak teşkil edeceği düşünülmektedir

The Mediation Effect of Job Crafting on the Effect of Learning Orientation on Life Satisfaction: A Research on Bank Managers

Günümüzün yoğun rekabetçi iş ortamında yenilikçilik ve öğrenme odaklılık sürdürülebilirlik açısından önemli olabilmektedir. Ayrıca, yaşam tatmini düzeyleri yüksek olan bireyler hem kendilerini hem de çevrelerini daha olumlu değerlendirebilmektedirler. İş zanaatkârlığı ise işgörenlerin yaptıkları değişiklikler aracılığıyla hem bireye hem de örgüte yönelik olumlu sonuçlar elde etmek amacıyla sergilenebilmektedir. Bu doğrultuda çalışmada, öğrenme odaklılığın yaşam tatmini üzerindeki etkisinin incelenmesi ve bu etki üzerinde iş zanaatkârlığının rolünün incelenmesi amaçlanmıştır. Araştırma amacı çerçevesinde kolayda örnekleme yoluyla, Güney Marmara bölgesindeki Balıkesir, Bilecik, Bursa, Çanakkale ve Yalova illerinde kamu ve özel sektörde çalışan 480 banka yöneticisine anket uygulanarak veriler toplanmıştır. Elde edilen veriler açıklayıcı ve doğrulayıcı faktör analizleri, korelasyon analizi ve yapısal eşitlik modeli aracılığıyla değerlendirilmiştir. Çalışma bulguları kapsamında, öğrenme odaklılığın yaşam tatminini pozitif yönde ve anlamlı olarak etkilediği ve bu etkide iş zanaatkârlığının da kısmi aracılık etkisi tespit edilmiştir.

Disease resistance and fruit quality characteristics of 12 Vitis spp. grown in a humid-like climate region

Viticulture is carried out for different purposes in almost every region of the world. Although V. vinifera L. cultivars are the most commonly grown species in Turkey, their cultivation is very limited in Yalova and similar humid regions. In these regions, fungal diseases are common due to heavy rain, limited sunlight and stagnant air movement, especially in spring and summer months. For this reason, viticulture can only be performed in these humid regions using intense fungicide. In this study, the aim was to determine the most suitable cultivars by comparing 80 years of climate data in Yalova province with eight bioclimatic indices obtained in two growing seasons using a reduced-synthetic-pesticide spray program. Some quality characteristics and susceptibility to fungal diseases (downy and powdery mildew) for a total of eight V. vinifera L., three V. labrusca, and one interspecies grape cultivar were evaluated in 2019 and 2020 in the humid Yalova region. V. labrusca × V. vinifera L. hybrids had higher total sugar (18.2% - 23.1%) and lower acidity (0.23% - 0.42%) than V. vinifera L. cultivars. In addition, these genotypes (Alden, Ülkemiz, Rizpem) had a lower incidence of powdery mildew in both years. ‘Alden’, ‘Autumn Royal’ and ‘Erenköy Beyazı Cl.27’ exhibited resistance to downy mildew.

INVESTIGATION OF LIQUEFACTION POTENTIAL UTILIZING NONLINEAR SEISMIC SITE RESPONSE OF THE PROJECT AREA LOCATED IN YALOVA PROVINCE SÜLEYMANBEY DISTRICT

Meydana gelen depremler sonucunda yapılarda sıvılaşma kaynaklı büyük hasarların oluşması, sıvılaşma analizlerinin önemini zamanla arttırmış ve bilgisayar destekli analizlerin daha sık kullanılmasına olanak sağlamıştır. Bu çalışmada, Yalova İli Süleymanbey Mahallesinde yer alan proje alanı için sismik saha tepkisi dikkate alınarak sıvılaşma potansiyeli değerlendirilmiştir. Sismik saha tepki analizleri gerçek deprem senaryoları kullanılarak Deepsoil programında yürütülmüştür. Sırasıyla Mw=5.3, 5.8, 6.6, 7.1 ve 7.6 büyüklüğündeki Çanakkale Ayvacık, Afyonkarahisar Çobanlar, Ege Denizi İzmir Seferihisar Açıkları, Düzce (Bolu) ve Kocaeli Deprem verileri kullanılarak nonlineer analiz yöntemiyle maksimum yer ivmesi değerlerine ulaşılmıştır. Söz konusu deprem senaryolarının ilgili proje alanına uygulanmasıyla elde edilen verilerin sıvılaşma analizlerinde bir girdi olarak kullanılması, analizlerin gerçek duruma yakın bir biçimde yürütülmesini sağlamıştır. Her bir deprem büyüklüğü için Novoliq programında yer alan 9 farklı metot ve sadeleştirilmiş teorik yöntem kullanılarak sıvılaşma analizleri gerçekleştirilmiş olup elde edilen sonuçlar birbirleriyle karşılaştırılmıştır. Proje alanında Mw=5.3, 5.8 ve 6.6 büyüklüğündeki depremler için sıvılaşma potansiyeli değişkenlik gösterirken Mw=7.1 ile Mw=7.6 büyüklüğündeki depremlerde alanın tamamında sıvılaşma riski gözlemlenmiştir.

THE EFFECTS OF ETHİCS AND CORPORATE SOCİAL RESPONSİBİLİTY PERCEPTİONS ON WORK INVOLVEMENT SELF-ESTEEM AND JOB PERFORMANCE

The importance of ethics and social responsibility is emphasized with studies carried out in different fields with each passing day. In particular, the concepts of ethics and social responsibility, which are discussed with different dimensions within the scope of their impact on employee behavior, have come to the fore in the last twenty years due to their important effects on the creation of a good working environment and employee behavior in organizations. In this study, designed in this framework, the effects of the importance given to ethics and social responsibility on work involvement, self-esteem and job performances are investigated. In this context, the data obtained through questionnaires from 220 managers and employees in the manufacturing sector were used in the study conducted in Istanbul, Kocaeli, Sakarya, Düzce, Bolu and Yalova provinces in Turkey. According to the findings obtained with the help of partial least square structural equation analysis; The increase in employees' perception of ethics and responsibility significantly increases their work involvement and self-esteem. It was observed that the job performance of the participants whose work involvement and self-esteem increased significantly increased. The findings also reveal that self-esteem has a quadratic effect as well as a direct effect on job performance, that is, an increase in self-esteem causes a significant increase in job performance proportional to the square of this increase.

Identification of Races 1, 2, 4 and 8 of Fusarium oxysporum f. sp. dianthi in Turkey by Using Molecular Markers

Fusarium oxysporum f.sp. dianthi (Prill and Delacr.) (Fod) is a causal agent of wilt disease of carnation (Dianthus caryophyflus L.) with its different physiological races. Although eleven physiological races of Fod have been reported in the world, a polymerase chain reaction (PCR)-based diagnostic tool was developed for identification of Fod races 1, 2, 4, and 8, which are the most commonly found in many countries. On the other hand, there is no information about which races are found in Turkey. A total of 91 isolates were collected from plants with Fusarium-like symptoms in the most grown carnation areas in Antalya, İzmir, Isparta and Yalova provinces and all isolates were identified using molecular methods. As a conclusion, the results showed that Fod isolates collected from the most carnation grown provinces of Turkey consist mostly of race 1, 2 and 8. This is the first study reporting Fod races causing wilt disease on carnation plants in Turkey.

Freshwater Amphipod Species of Western Anatolia, Marmara and Turkish Thrace Regions

To determine the Amphipoda (Crustacea) fauna of the inland waters of Western Anatolia, Marmara and the Turkish Thrace Region, field studies were conducted between May 2014 and March 2019. Seven field studies were conducted. Samplings were conducted at 291 localities and amphipod specimens were found at 127 of them. As a result, 11 amphipod species (Echinogammarus stocki G. Karaman, 1970, Gammarus aequicauda (G. Karaman, 1970), Gammarus anatoliensis Schellenberg, 1937, Gammarus arduus G. Karaman, 1975, Gammarus balcanicus Schäferna, 1923, Gammarus dorsosetosus Mateus & Mateus, 1990, Gammarus gonensis Özbek, 2016, Gammarus komareki Schäferna, 1923, Gammarus lacustris G.O. Sars, 1863, Gammarus pulex pulex (Linnaeus, 1758), Gammarus uludagi G.S. Karaman, 1975) were determined. The new records can be listed as: E. stocki for Ekinanbarı, G. anatoliensis for Uşak, G. arduus for Bolu and Düzce, G. balcanicus for Kocaeli and Sakarya, G. dorsosetosus for Bolu, G. gonensis for Istanbul and Manisa, G. komareki for Düzce and Kocaeli, G. lacustris for Istanbul, G. pulex pulex for Bolu, Kırklareli, Kocaeli, Sakarya and Uşak, and G. uludagi for Aydın, Bilecik, Sakarya and Yalova provinces. The observed morphological features and the detailed drawings of the determined taxa are presented. Additionally, a map showing the distribution of the obtained species is also given.