Van Yüzüncü Yıl Üniversitesi

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The Changes of Mucous Cells İn The Skin of Van Fish During Freshwater Adaptation
(ABADER (Adıyaman Bilimsel Arastırmalar Dernegi), 2020) İribuğday, F.; Oğuz, A.R.
Van fish, an anadromous fish, migrate in flocks to fresh water poured into the lake from the extreme conditions of Van Lake for breeding. The fish that complete their breeding return to the lake for feeding. In these two different aquatic environments, skin is exposed to different physicochemical effects of water. In the present study, morphometric and histological changes in mucous cells of the skin during reproductive migration were studied. The thickness of the epidermis was found to be thicker in the freshwater than in the lake environment. It has been determined that both the diameter and the chemical content of the mucus cell vary in different aquatic environments (freshwater and lakes). For this reason, it is thought that mucus cells are present in different types in the skin of Van fish. Also, these changes are different in several parts of the body (dorsal and lateral). These histological and histochemical changes in Van Fish are thought to be necessary for the adaptation of fish to aquatic environments. © 2020, ABADER (Adıyaman Bilimsel Arastırmalar Dernegi). All rights reserved.
Determination of Botanical Origin and Mineral Content of Propolis Samples From Balveren (Şırnak) Beekeepers Accommodation Areas
(ABADER (Adıyaman Bilimsel Arastırmalar Dernegi), 2022) Fidan, M.; Pinar, S.M.; Erez, M.E.; Inal, B.; Eroğlu, H.
Researches on bee products have become popular in recent years. In fact, the content and component of bee products varies depending on many ecological and floristic factors and its nutritional and therapeutic properties are directly related to its content. Balveren (Şırnak province) beekeepers place their hives in locations with different geographical structure, floristic and topographic characteristics. This variability not only affects the quality of honey but also changes the properties of propolis. Studies on propolis, known as bee glue, have gained importance in recent years. As with other bee products, the propolis content also depends on the floristic characteristics of the region. In this study, propolis samples were collected from the regions where Balveren beekeepers stayed and their botanical origins, wax ratios, phenolic content, and mineral substance contents were analyzed. In the microscopic analysis, pollen grains belonging to 14 different families used by bees were determined. It was determined that the total phenolic and mineral contents of propolis vary completely depending on the location. With this study, the propolis properties of the hives in the region were tried to be revealed and it was aimed that this study would help the region's propolis to be used for technological and therapeutic purposes. © 2022, ABADER (Adıyaman Bilimsel Arastırmalar Dernegi). All rights reserved.
Determination of Toxic Effects of Deltamethrin on the Primary Gill Cell Culture of Lake Van Fish
(ABADER (Adıyaman Bilimsel Arastırmalar Dernegi), 2021) Kaval Oğuz, E.
Lake Van fish is one of few vertebrate species living in the lake, therefore it plays a very useful role as an indicator in determining lake pollution. Deltamethrin (DLT) is one of the pesticides used extensively in the Lake Van basin. In this study, it was aimed to determine the effects of DLT on the primary gill cell culture. Different concentrations of DLT (0.01, 0.1, 1, and 10 μM) were added to primary gill cell culture and the total antioxidant and oxidant levels, malondialdehyde (MDA), and 8- hydroxy-2'-deoxyguanosine (8-OHdG) levels were determined at the end of 24 and 48 h of administration. While the highest concentration of applied DLT (10 μM) caused a significant increase in the total oxidant level at 48 h, a decrease in the total antioxidant level was detected at 24 and 48 h (P < 0.05). The increase in MDA level, which is the product of lipid peroxidation of unsaturated fatty acids, with DLT concentrations of 1–10 μM at the end of 24 and 48 h was found to be significant (P < 0.05). As a result, it can be said that DLT caused oxidative stress in the primary gill cell culture of Lake Van fish exposed to concentrations of 1 and 10 μM, but no genotoxic effect was observed. © 2021, ABADER (Adıyaman Bilimsel Arastırmalar Dernegi). All rights reserved.
Examination of Behavioral Traits of Monocultures and Polycultures of Two Different Trout Species (Oncorhynchus Mykiss, Salmo Sp.) at Different Ratios Depending on Various Factors
(ABADER (Adıyaman Bilimsel Arastırmalar Dernegi), 2021) Karataş, B.; Arabaci, M.
The present study aimed to determine both the effects of monocultures of rainbow trout (R) and brown trout (B) and polycultures (R 75%-B 25%; R 66%-B 34% and R 50%-B 50%) on behavior. In the study, the area used vertically by the fish in the tank, the mobility rate of fish in the tank, the rate of tendency of fish in eating as soon as they were fed, whether the fish test the feed, the interspecies feed competition, the time they start to take the first feed, the duration of the feed consumption of the fish and the feed area of the fish have been considered as behavioral evaluation criteria. The trout were monitored with a camera to determine their behavior. Considering all behavioral criteria, the best polyculture rate was determined as R 66%- B 34%. Brown trout were found to be more mobile and exhibit more relaxed behavior compared to other groups in polyculture. In addition, interspecies feed competition was mostly encountered in this group. As a result, in this study, in which two different trout species were monocultured and treated at different polyculture ratios, the main factor causing behavioral change in fish was found to be the different stocking rates of fish to each other in the same tank. Different rates applied in polyculture caused unpredictable changes in behavior in both species. The ratio of fish used in polyculture was found to be a considerable factor affecting the final product and their behavior for aquaculture. © 2021, ABADER (Adıyaman Bilimsel Arastırmalar Dernegi). All rights reserved.
Examination of Helminth Parasites in the Fecal Samples of Magpies (Pica Pica), Jackdaws (Corvus Monedula), and Rooks (Corvus Frugilegus) in the Vicinities of Van Province/Turkey
(ABADER (Adıyaman Bilimsel Arastırmalar Dernegi), 2020) Yilmaz, A.B.; Azizoğlu, E.; Adizel, Ö.
The present study was designed to examine helminths in the gastrointestinal tract of corvid species including Pica pica, Corvus frugilegus, and Corvus monedula. A total of 43 fecal samples were collected from Pica pica, 42 samples from Corvus frugilegus, and 42 samples from Corvus monedula species. Feces were analyzed using sedimentation and flotation methods. Echinostoma spp. (2.32%), Capillaria spp. (6.97%), Syngamus spp. (2.32%), and Raillietina spp. (6.97%) were detected in Pica pica, Raillietina spp. (2.5%) and Capillaria spp. (10.0%) were detected in Corvus monedula, and only Capillaria spp. (9.52%) were detected in Corvus frugilegus. To our knowledge, this is the first study in Turkey identifying these helminth species in the fecal samples of these bird species. © 2020, ABADER (Adıyaman Bilimsel Arastırmalar Dernegi). All rights reserved.
The First Record of Zebra Mussel in Sarımehmet Dam (Van) and Its Possible Effects on Regional Fisheries
(ABADER (Adıyaman Bilimsel Arastırmalar Dernegi), 2019) Akkus, M.; Sari, M.; Arabaci, M.
The present research was conducted between October 2018 and October 2019 at Sarımehmet Dam which is on Karasu Stream. Sarımehmet Dam is a dam that is 60 kilometers away from Van city center and it has approximately 10 km² of surface area. It was first opened in 1991 for agricultural irrigation and electricity production. The zebra mussel (Dreissena polymorpha Pallas, 1771) captured in Sarımehmet Dam is a kind of invasive species and this is its first record in Van Province. In this study, the length-weight relationships of 733 zebra mussels from four stations were determined and the temperature, pH, salinity, and dissolved oxygen values of the stations were measured. The length-weight relationship was calculated according to the stations as W=0.0003XL2.976, W=0.0002XL2.971, W=0.0002XL2.962 and W=0.0002XL2.963. The measured maximum-minimum water quality values were noted for temperature as 1.5-22 °C, pH 8.2-8.9, salinity as ‰0.21-0.39 and dissolved oxygen as 6.44-11.45 mg/L. Based on the data, if zebra mussels in Sarımehmet Dam are moved to other water resources in the region, it was determined that invasion of pearl mullet breeding areas will cause great damage for fishery in the region. In the light of the gathered data, it was found out that if the zebra mussels in Sarımehmet Dam were transported to other water resources in the region, they would invade pearl mullet breeding areas and cause great damages for the fishery of the region. © 2019, ABADER (Adıyaman Bilimsel Arastırmalar Dernegi). All rights reserved.
Investigation of Coxiella Burnetii and Ehrlichia Canis by Molecular Methods in Ticks Removed From Patients Admitted To Hospital With Tick Bite Complaints
(ABADER (Adıyaman Bilimsel Arastırmalar Dernegi), 2021) Ekici, A.; Gürbüz, E.; Halidi, A.G.; Ünlü, A.H.; Aydemir, S.
Ticks have to suck blood from their hosts during their developmental stages, except for the egg period. They also transmit the pathogens to their host while feeding. A total of 100 ticks obtained from 42 female and 58 male patients admitted to a hospital were included in the study. After the morphological examination of the ticks, DNA extraction was performed. Conventional PCR for Coxiella burnetii and Nested-PCR for Ehrlichia canis were performed using species-specific primers. In the morphological examination, it was determined that all of the ticks belonged to the Ixodidae family and 95 (95%) were Rhipicephalus sanguineus and 5 (5%) were Ixodes ricinus species. C. burnetii was detected in 36 ticks and E. canis was found in 26 ticks out of 100 ticks included in the study. It was determined that 33 (91.67%) of the C. burnetii infected ticks were R. sanguineus and 3 (8.33%) were I. ricinus. It was also determined that 25 (96.15%) of the E. canis infected ticks were R. sanguineus and one (3.85%) was the I. ricinus. When the incidence of C. burnetii and E. canis was examined according to the place of residence of the patients, it was found that C. burnetii was seen at a higher rate in people living in rural areas and as a result of the statistical analysis, it was found that the difference was statistically significant. In conclusion, ticks pose a significant risk as vectors of C. burnetii and E. canis. © 2021, ABADER (Adıyaman Bilimsel Arastırmalar Dernegi). All rights reserved.
An Overview of the Flora of Siirt Province
(ABADER (Adıyaman Bilimsel Arastırmalar Dernegi), 2021) Pinar, S.M.; Fidan, M.; Eroğlu, H.
In this study, the plant taxa that spread within the provincial borders of Siirt were determined by scanning the existing literature and as a results of the 2-year (2018-2019) field study. In the literature review, the existence of 786 taxa within the borders of Siirt province was determined. As a result of the field studies, 447 of these taxa were collected and recorded. In addition, with this study, it was determined that 89 new taxa are distributed in Siirt province. According to the results, it was determined that a total of 875 taxa are distributed within the provincial borders of Siirt and 71 of these 875 taxa are endemic (endemism rate 8.11%). Out of 95 taxa that are not endemic or endemic and are considered endangered are evaluated in categories as follows: 6 taxa "CR" Critical, 10 taxa are "EN" Endangered, 33 taxa are "VU" Vulnerable, 18 taxa are in "NT" Near Threatened, 23 taxa are in "LC" Least Concern, and 5 taxa are in "DD" Data Deficient. Of the detected taxa, 329 are Iran-Turan elements, 90 are Mediterranean elements, 35 are European-Siberian elements, and 4 are Euxine elements while 417 belong to a phytogeographical region or multi-regions. As a result of the study, the first five families with the most taxa are, respectively, Poaceae (115 taxa), Fabaceae (109 taxa), Asteraceae (95 taxa), Apiaceae (56 taxa), and Lamiaceae (53 taxa). © 2021, ABADER (Adıyaman Bilimsel Arastırmalar Dernegi). All rights reserved.
Pearl Mullet (Alburnus Tarichi (Guldenstaedtii, 1814)) Fishing With Trammel Nets in Lake Van
(ABADER (Adıyaman Bilimsel Arastırmalar Dernegi), 2019) Bozaoğlu, A.S.; Akkuş, M.; Yeşil, A.
This study was conducted with the contributions of 77 interview participants to determine the characteristics of the trammel net and fishing boats, problems of fishermen, and the landing amount of pearl mullet (Alburnus tarichi, Güldenstädt, 1814) captured in Lake Van between 2016 and 2017. According to the results, it was found out that trammel nets were the only fishing gear that are used by fishermen on pearl mullet fishing in Lake Van. In terms of the FAO standards, it was found out that the technical plans of trammel nets were drawn accordingly, and a fishing boat uses an average of 4393 m of trammel net. In addition, it was determined that the fishing boats used in pearl mullet fishery in Lake Van had an average engine power of 92±36.75 BG and the average length of the boats was 12±2.25 m. Furthermore, the most important problems of fishermen were named as illegal, uncontrolled, and unregulated (IUU) fishing, low fish prices, and lack of harbor facilities. © 2019, ABADER (Adıyaman Bilimsel Arastırmalar Dernegi). All rights reserved.

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