Browsing by Author "Girişgin, Ahmet Onur"

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A survey of the ectoparasites found on wild birds in northwest Turkey
(Agricultural Research Communication Centre, 2023-08-01) Girişgin, O.; GİRİŞGİN, OYA; Girişgin, Ahmet Onur; GİRİŞGİN, AHMET ONUR; Çimenlikaya, N; Saygın, Berna; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Parazitoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Karacabey Meslek Yüksekokulu.; Bursa Uludağ Üniversitesi/Sağlık Bilimleri Fakültesi.; 0000-0002-0020-2708; B-5286-2017; JRY-1676-2023
Background: Turkey is home to various resident and migratory wild bird species. The aim of the present study was to investigate the ectoparasites found on 188 injured or rescued resident and migratory wild birds from Bursa and surroundings between 2015 and 2019.Methods: Sampled birds were examined for different ectoparasites and all of the collected parasites were placed into tubes containing 70% ethyl alcohol. After mounting onto slides or fixing onto a plate, each parasite was identified to species using a light or stereo microscope.Result: Results revealed that 88 (46.8%) of the examined wild birds were infested with one or two of 3 different species of ectoparasites. The species identified were 38 lice, three ticks and two flies. The lice were highly prevalent (40.4%) species than the flies (2.1%) and ticks (2.1%). The results also first geographically documented the lice and ked fly species as follows, with additional new host records: Fulicoffula gallinula and Pseudomenapon pilosum in the common moorhens (Gallinula chloropus); Ciconiphilus decimfasciatus in the grey heron (Ardea cinerea); Saemundssonia clayae in the Eurasian woodcock (Scolopax rusticola); Ardeicola ixobrychae in the common little bittern (Ixobrychus minutus) and the ked fly as Ornithophila metallica in the Eurasian magpies (Pica pica) in Turkey. The study results provided valuable data on the ectoparasites living on migratory and resident bird species during their migration throughout northwest Turkey. Further research on the related pathogens that these ectoparasites harbor is in need.
Acaricidal efficacy of Origanum onites L. essential oil against Rhipicephalus turanicus (Ixodidae)
(Springer, 2008-07) Kürkçüoğlu, Mine; Kırımer, Neşe; Başer, Kemal Hüsnü Can; Coşkun, Şevki Ziya; Girişgin, Oya; Malyer, Hulusi; Girişgin, Ahmet Onur; Uludağ Üniversitesi/Veteriner Fakültesi/Parazitoloji Anabilim Dalı.; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Biyoloji Bölümü.; 0000-0002-0020-2708; 0000-0001-9896-1093; B-5286-2017; 25627486300; 57221061095; 6602736554; 16030783600
Essential oils that were extracted by steam distillation from Origanum onites L. from northwest Turkey were analyzed using an Agilent GC-MSD system. Carvacrol was the major component (64.3%) of the oil. Both pure commercial carvacrol and essential oil at concentrations of 1.5%, 3.2%, 6.25%, 12.5%, 25%, 50%, and 100% (v/v) were tested for their effects against engorging Rhipicephalus turanicus, which were collected from cattle breeding in the region. Pure carvacrol killed all the ticks following 6 h of exposure, while 25% and higher concentrations of the oil were completely effective in killing the ticks by the 24th-hour post-treatment (p < 0.05). The concentrations of 6.25% and 12.5% killed all the ticks by day 2. Lethal concentrations for 50% (LC(50)) and 90% (LC(90)) of 2.34% and 7.12%, respectively, were detected 24 h post-treatment. These findings indicate that the essential oil of O. onites L. has potential to be utilized at reasonable concentrations to control tick infestations.
Balarılarında varroa destructor enfestasyonuna karşı pudra şekeri etkinliğinin araştırılması
(Uludağ Üniversitesi, 2014-10-30) Muz, Mustafa Necati; Arslan, Servet; Girişgin, Ahmet Onur; Uludağ Üniversitesi/Veteriner Fakültesi.
Bu araştırma Varroa destructor ile organik mücadele amacıyla kullanılan pudra şekeri uygulamasının Nisan ve Haziran aylarının sabah ve öğleden sonra saatlerindeki etkinliğinin belirlenmesi amacıyla yapılmıştır. Çalışma Hatay’a bağlı Arsuz yöresinde yedi farklı arılıkta yürütülmüştür. Her arılıkta Varroa destructor ile yüksek düzeyde enfeste olduğu belirlenen onar adet koloni deneme amacıyla, beşer adet koloni kontrol amacıyla toplam 105 adet koloni kullanılmıştır.. Deneme grubuna farklı aylar ve saatlerde aynı miktarda pudra şekeri uygulanmıştır. Denemelerin öncesi ve sonrasında V. destructor sayımları gerçekleştirilmiştir. Pudra şekeri uygulamasının etkinliği, tedaviden önce ve sonra arıların üzerindeki akar yükü farklılığını değerlendiren Henderson-Tilton formülü uygulanarak sabah ortalama % 39,72 öğleden sonra ortalama % 44,26 olarak belirlenmiştir. Karşılaştırılan bu iki etkinlik düzeyi arasında anlamlı bir fark bulunmamıştır (p<0,05). Varroa destructor enfestasyonu ile nektar akımı dönemlerinde mücadele edilmesi gereken durumlarda kalıntı ve direnç riski taşımayan pudra şekeri uygulaması organik mücadeleye katkı sağlamaktadır
Bazı bitkisel ligandların ve türevlerinin antihelmintik etkilerinin in silico moleküler modelleme yöntemiyle tahmin edilmesi
(Bursa Uludağ Üniversitesi, 2022-02-14) Karaman, Dilara; Girişgin, Ahmet Onur; Bursa Uludağ Üniversitesi/Fen Bilimleri Enstitüsü/Biyoloji Anabilim Dalı.; 0000-0003-4386-8531
Helmintik enfeksiyonlar dünya üzerinde oldukça yaygındır ve 2 milyardan fazla insan en az bir helmint türü ile enfektedir. Bu çalışmada bitkisel ligand iskeletleri kullanılarak piyasadaki en sık kullanılan antihelmintik ilaçlardan daha düşük dozda etki edebilen, daha az yan etkili, ulaşılması kolay ve güvenilir yeni bir antihelmintik ilaç adayının in silico modelleme yöntemleriyle modellenmesi ve bazı bitki özütlerinin kılkurtları üzerindeki antihelmintik etkisinin gösterilmesi hedeflenmiştir. Direnç gelişimi, yeni antihelmintiklerin keşfini gerektirdiği için, antihelmintik direnç gelişimi durumunda ortaya çıkabilecek mutant proteinlerin inhibe edilmesi amacıyla en potent bitkisel ligandlar kenetleme simülasyonları vasıtasıyla araştırılmıştır. Eriositrin molekülü türevlerinin çizilmesi amacıyla iskelet olarak kullanılmıştır. Bazı hedef proteinlerin 3 boyutlu yapısı bilinmediğinden, sekonder yapısı homoloji modelleme ile tahmin edilmiştir. Sonuç olarak kukurbitasin-B’nin fevkalade iyi bir skor değeri ile (Ki= 57,11 pikomolar ve ΔG= -13,97 kcal/mol) rat karnitin palmitoil transferaz 2 enzimini inhibe edebildiği, direnç gelişiminde arteannuin-B’nin Mebendazolden daha potent bir ilaç adayı olduğu, tasarlanan 24 eriositrin türevinden E05’in eriositrinden daha düşük Ki değerine sahip olduğu, oreganolün seçici bir inhibitör adayı olduğu ve fumarat redüktaz için selektivite indeksinin 20 310,53 bulunduğu ve in vivo deneylerde Artemisia annua L. n-hekzan özütünün 1200 mg/kg dozunun kılkurtlarına karşı %36,91’lik bir antinematodal etki gösterdiği ilk kez bu çalışmada ortaya çıkarılmıştır
A case of contracaecum sp (ascaridida: Anisakidae) infection in dalmatian pelican (pelecanus crispus)
(Kafkas Üniversitesi, 2012) Girişgin, Ahmet Onur; Demirer, Aylin Alasonyalılar; Girişgin, Oya; Uludağ Üniversitesi/Veteriner Fakültesi/Parazitoloji Anabilim Dalı.; Uludağ Üniversitesi/Veteriner Fakültesi/Patoloji Anabilim Dalı.; Uludağ Üniversitesi/Karacabey Meslek Yüksekokulu.; 0000-0002-0020-2708; B-5286-2017; 16030783600; 35338868800; 57221061095
Contracaecum genus (Ascaridida: Anisakidae) is a nematode parasite of the fish-eating birds throughout the world. A heavy infection of Contracaecum sp. was detected at the necropsy of a Dalmatian pelican (Pelecanus crispus) that had been referred to an animal hospital due to trauma and died before the initiation of any treatment. Intense parasitic infection was seen in the proventriculus and within the lumen of oesophagus to duodenum. This is the first case of intense adult Contracaecum sp. infection in a piscivorous bird in Turkey.
Clove oil
(Crc Press-Taylor & Francis Group, 2017) Nollet, L. M. L.; Rathore, H. S.; Girişgin, Ahmet Onur; Uludağ Üniversitesi/Veteriner Fakültesi/Hayvan Hastanesi/Parazitoloji Anabilim Dalı.; 0000-0002-0020-2708; B-5286-2017
Crimean-Congo Hemorrhagic Fever infection in domestic animals in Marmara region, Western Turkey
(Ankara Üniversitesi, 2014) Dinçer, Ender; Uyar, Yavuz; Özkul, Aykut Ayaz; Tuncer, Pelin Göktuna; Yeşilbağ, Kadir; Alpay, Gizem; Girişgin, Ahmet Onur; Aydın, Levent; Uludağ Üniversitesi/Veterinerlik Fakültesi/Klinik Öncesi Bilimler Bölümü.; 0000-0002-0020-2708; 0000-0002-7468-0155; 0000-0002-3411-081X; ABE-7662-2020; B-5286-2017; AAC-6294-2020; AAH-3917-2021; 54787022200; 6602912127; 54079452300; 16030783600; 55808198600
Crimean-Congo hemorrhagic fever (CCHF) has been an important health issue in Turkey since the last decade. Although there is a well-described endemic area, the infection tends to disseminate into non-endemic areas. In the South Marmara region, a non-endemic area, serological and virological investigations were performed to evaluate the infection status in livestock animals. Among 508 blood samples collected from 5 different locations, 33.1% were positive for CCHF-neutralizing antibodies. The highest seroprevalence rate was detected in goats (66.0%), followed by sheep (31.8%) and cattle (13.0%) (p<0.0001). There were extensive differences in seroprevalence rates in neighboring locations, i.e., 7.8% in Keles and 47.6% in the Orhaneli district of Bursa province. Using antigen-capture ELISA (Ag-ELISA) and real-time reverse transcription PCR (rt RT-PCR), 6.6% of the tested animals were found to be viremic at the time of sampling. Two samples that were negative by Ag-ELISA produced a positive signal in rt RT-PCR, indicating the higher sensitivity of the latter method for detecting viremic animals. The results of this study demonstrate the wide distribution of CCHF virus in some locations in a non-endemic area, which may lead to the generation of focal infectious areas.
Determining the efficacy of flumethrin (Varostop® ) against to Varroa destructor in honey bee colonies in fall season
(Uludağ Üniversitesi, 2010) Girişgin, Ahmet Onur; Aydın, Levent; Uludağ Üniversitesi/Veterinerlik Fakültesi/Parazitoloji Anabilim Dalı.
This study was conducted to determine the efficacy of flumethrin (Varostop® ) preparation against the honey bee parasite Varroa destructor, in an apiary located in Bursa province of Turkey, during September and November 2009. Study was covered totally 14 colonies living in Langstroth type hives which 7 of which were treatment and 7 untreated control. Varroacidal effectiveness of flumethrin (Varostop® ) was determined with Henderson-Tilton’s Formula based on the difference of mite burden on bees before and after treatments at the end of four weeks. The treatment resulted a 94.9 % efficacy in infested colonies when compared with control ones and efficacy indicates that Varostop® is effective to Varroosis in naturally infested honey bee colonies in fall season.
Determining the stability of clove oil (eugenol) for use as an acaricide in beeswax
(Israel Veterinary Medical Assoc, 2014-12) Barel, Shimon; Zilberman, Deniz Barzilai; Girişgin, Ahmet Onur; Girişgin, Oya; Uludağ Üniversitesi/Veteriner Fakültesi/Parazitoloji Anabilim Dalı.; Uludağ Üniversitesi/Uygulama ve Araştırma Merkezi/Arıcılığı Geliştirme.; Uludağ Üniversitesi/Karacabey Meslek Yüksekokulu.; 0000-0002-0020-2708; 0000-0001-9896-1093; B-5286-2017; 16030783600; 57221061095
Clove (Syzygium aromaticum) oil is primarily a mixture of monoterpenes, allylphenols and its major component is eugenol. A study was conducted to determine the stability and sustainability of clove oil components in beeswax samples under semi-field conditions. Five wooden hives with ten comb foundations of frames were used; none of the hives contained bees. For the assays in the four hives, 50 ml of 1% clove oil was tested using different emulsifiers and modes of application. Tween 80 and paraffin oil emulsifiers were used via both evaporation from cups and the spraying method on each of the separate hives. One hive containing blank beeswax was kept as control. Characterization of clove oil and contamination levels of its components in beeswax on days 1, 2, 5, 7, 14 and 28 were determined via gas chromatography/mass spectrophotometry analysis. Eugenol was detected and identified as the major component; its level in beeswax was determined to be stable for up to three weeks with three of the dispensers, but it was not stable when used with paraffin oil using the cup method application. As a result of these studies, we found that if clove oil is used for honeybee Varroosis with different dispensers, eugenol can be stable for a minimum of two weeks in beeswax. As a result, this period should be considered during treatment of Varroosis and before honey harvesting. Absorption and accumulation of eugenol and other effective volatile essential oils and monoterpenes into beeswax may make honeycombs as a secondary, sustain release source.
Ectoparasites of hedgehogs (Erinaceus concolor) from Turkey
(Schluetersche Verlagsgesellschaft Mbh & Co Kg, 2015-07-01) Girişgin, Ahmet Onur; Şenlik, Bayram; Aydın, Levent; Çırak, Veil Yılgör; GİRİŞGİN, AHMET ONUR; ŞENLİK, BAYRAM; AYDIN, LEVENT; ÇIRAK, VELİ YILGÖR; Uludağ Üniversitesi/Veteriner Fakültesi/Parasitoloji Bölümü; 0000-0002-0020-2708; 0000-0003-2964-2245; B-5286-2017; GBN-0139-2022; HLG-4450-2023; CKL-2130-2022
Hedgehogs are small, nocturnal, spiny-coated animals that have been growing in popularity as exotic pets. However, these animals are host to a wide variety of viruses, bacteria, fungi and parasites, some of which are of zoonotic character. Thus, because hedgehogs have a potential role to transmit zoonoses including arthropod-borne diseases, we examined them for their ectoparasites. The study was carried out on hedgehogs found dead mainly due to road casualties in the Bursa province of Turkey. The ectoparasites were collected by both insecticide spraying of the body and inspection on a white paper carefully. Totally three species of ticks (Rhipicephalus sanguineus, Hyalomma aegyptium, Haemaphysalis parva) and one flea species (Archeopsylla erinacei) were detected. The prevalence of mixed infestation with both ticks and fleas was 45.5%. Haemaphysalis parva was reported for the first time from hedgehogs (Erinaceus concolor) in Turkey. The occurrence of ectoparasites and their potential role as vectors of certain zoonotic diseases are briefly discussed.
Efficacies of formic, oxalic and lactic acids against Varroa destructor in naturally infested honeybee (Apis mellifera L.) colonies in Turkey
(Kafkas Üniversitesi, 2010) Girişgin, Ahmet Onur; Aydın, Levent; Uludağ Üniversitesi/Veterinerlik Fakültesi/Klinik Öncesi Bilimler Bölümü.; 0000-0002-0020-2708; B-5286-2017; 16030783600; 55808198600
This study was performed to determine the efficacies of formic, oxalic and lactic acids in the control of the common ectoparasite Varroa destructor on naturally infested honeybee (Apis mellifera L.) colonies in the Marmara region of Turkey. Experimental colonies were divided in to five homogeneous groups of eight hives each. Formic, oxalic and lactic acids and coumaphos (Perizin (R), a chemical with known efficacy, for comparison) were each applied to one group, with the fifth group serving as the untreated control. Each colony was treated during three seasons, two autumn seasons and one spring. The efficacy of the acids was measured by the Henderson-Tilton formula, and the significance between the acids was determined via Tukey's multiple comparison test. In the first autumn, the highest percentage of the efficacy were detected in oxalic acid (93.7%) followed by coumaphos (92.5%), formic acid (84.7%) and lactic acid (54.3%). In spring, the efficacy rate was 65.6% in coumaphos while these rates were 21.4% in formic acid and 8.3% in oxalic and lactic acid each one. On the other hand, in the second autumn, the efficacy rate was 96.9% in coumaphos, 95.6% in formic acid, 93.3% in oxalic acid and 87.7% in lactic acid, respectively. During the trials, we observed no reduction in the queen bees' egg laying or in adult bee deaths due to the treatments.
Eimeria leuckarti infections in sport horses in Northwest Turkey
(Schluetersche Verlagsgesellschaft, 2016) Gülegen, Ender; Girişgin, Oya; Girişgin, Ahmet Onur; Çırak, Veli Yılgör; Uludağ Üniversitesi/Veteriner Fakültesi/Hayvan Araştırma ve Uygulama Merkezi.; Uludağ Üniversitesi/Karacabey Meslek Yüksekokulu.; Uludağ Üniversitesi/Veteriner Fakültesi/Parazitoloji Anabilim Dalı.; 0000-0002-0020-2708; 0000-0001-9896-1093; B-5286-2017; 6505895809; 57221061095; 16030783600; 6602404057
The aim of the present study was to examine sport horses in Northwest Turkey for Eimeria (E.) leuckarti infections. Between 2004 and 2008 fecal samples from 549 horses of different age, breed and sex of 21 farms were examined for E. leuckarti oocysts using a qualitative method which involved centrifugation/flotation and saturated sugar solution as medium. The prevalence of infection was evaluated relative to host age, sex, breed and pasture availability. 16 (2.9%) horses were found to be infected with E leuckarti, whilst infected horses were located in nine (42.8%) farms. Younger horses (< 1 year old) were more frequently infected than older ones. However, breed, sex and availability of pasture were not identified as factors influencing the prevalence. As a main conclusion, compared with the low infection rate found in individual horses, E. leuckarti was highly prevalent at the farm level which possess a permanent risk of infection of especially younger horses at these premises. This study reports for the first time on the prevalence of E. leuckarti in sport horses from farms in Northwest Turkey.
Evaluation of some synthetic acaricides against varroa destructor (acari: varroidae) in Turkey: an ındication of resistance or misuse of fumigant amitraz?
(Bursa Uludağ Üniversitesi, 2018-10-15) Girişgin, Ahmet Onur; Özüiçli, Mehmet; Bah, Saidal Ali; Girişgin, Oya; Aydın, Levent; Bursa Uludağ Üniversitesi/Veteriner Fakültesi.; Bursa Uludağ Üniversitesi/Karacabey Meslek Yüksekokulu.; 0000-0002-0020-2708; 0000-0001-9896-1093
The parasitic mite, Varroa destructor is one of the most important agents for substantial losses in honeybee colonies throughout the world. Several acaricides consisting of synthetic and organic compounds are being used to combat mite. This study was conducted to determine the efficacies of three synthetic acaricides in naturally infested honeybee colonies at consecutive two autumn seasons. Acaricides were commercial preparations of coumaphos (liquid and plastic strips), amitraz (fumigation and plastic strip) and flumethrin (plastic and wooden strips) as a treatment group consisting of eight hives per drug. A control group was kept in both seasons. All drugs were applied as prescribed to the homogenised Varroa-infested honeybee colonies at consecutive two years. The evaluation of efficacies was based on the collected mite percentage obtained with powdered sugar method and it was calculated through Henderson-Tilton’s formula. Dropped mites onto the pollen drawers were also evaluated statistically and drugs were compared to each other. Results showed us the effective drugs (up to 90%) were amitraz plastic strip, flumethrin wooden strip and coumaphos plastic strip with 98.5%, 96.5%, and 93.2% averages, respectively according to formula if evaluated within two autumn seasons. Fumigation of amitraz is not sufficient if compared to others and the control group. This data is discussed for suspicion of the possible resistance of mites or misuse of the product with this kind of application.
First molecular detection of Nosema ceranae in Azerbaijan
(Taylor & Francis, 2019-05-30) Utuk, Arnnağan Erdem; Aliyeva, Rafiga; Girişgin, Ahmet Onur; Gökmen, Tülin Güven; Özüiçli, Mehmet; Aydın, Levent; GİRİŞGİN, AHMET ONUR; ÖZÜİÇLİ, MEHMET; AYDIN, LEVENT; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Parazitoloji Anabilim Dalı.; 0000-0002-0020-2708; B-5286-2017; HLG-4450-2023
Nosemosis is an important adult honey bee disease and causes economic losses worldwide. The aim of this study was to determine the Nosema species in honey bees (Apis mellifera) of Azerbaijan. For this aim, honey bee samples were collected from the Central (Ganja), Northern (Qakh) and Southern (Astara) parts of the country. Samples were examined microscopically, and 10 out of 24 samples (41.6%) were found to be positive for Nosema sp. spores. Positive samples were tested with a multiplex-PCR for the detection of Nosema species. As a result of our study, we could not detect N. apis but we determined the N. ceranae for the first time in Azerbaijan.
The first record of pseudoscorpions in honeybee hives in Turkey
(Scientific Technical Research Council, 2013) Harvey, Mark; Girişgin, Ahmet Onur; Girişgin, Oya; Uludağ Üniversitesi/Veterinerlik Fakültesi/Parazitoloji Bölümü.; Uludağ Üniversitesi/Karacabey Meslek Yüksekokulu.; 0000-0002-0020-2708; 0000-0001-9896-1093; B-5286-2017; JRY-1676-2023; 16030783600; 57221061095
Three pseudoscorpions identified as Neobisium validum were found in a honeybee hive in Bursa Province of Turkey. They were collected from the bottom of the hive but no relationship between the pseudoscorpions and bees was observed. This case is a first report of pseudoscorpions in a honeybee hive from Turkey.
Helminth infections of wild boars (Sus scrofa) in the Bursa province of Turkey
(Cambridge Univ Press, 2011-12) Şenlik, Bayram; Çırak, Veli Yılgör; Girişgin, Ahmet Onur; Akyol, Çetin Volkan; Uludağ Üniversitesi/Veterinerlik Fakültesi/Parazitoloji Anabilim Dalı.; 0000-0002-0020-2708; 0000-0003-2964-2245; B-5286-2017; 9332720500; 6602404057; 16030783600; 6507993308
The present study aimed to investigate the status of helminth infections in wild boars in the Bursa province of Turkey. For this purpose, during 2007-2008, 27 wild boars were necropsied and examined for helminths. Individual samples of tongue and diaphragm from 27 necropsied wild boars and an additional 22 tongue and diaphragm samples provided by hunters were examined by trichinoscopy and artificial digestion for Trichinella spp. larvae. Twenty animals (74%) were identified as being infected with at least one helminth species. Twelve species of helminths were detected, with the following prevalence rates: Metastrongylus apri (59%), Metastrongylus salmi (52%), Metastrongylus pudendotectus (52%), Dicrocoelium dendriticum (33%), Globocephalus urosubulatus (22%), Macracanthorhynchus hirudinaceus (19%), Gongylonema pulchrum (11%), Physocephalus sexalatus (7%), Trichuris suis (7%), Ascarops strongylina (4%), Hyostrongylus rubidus (4%) and Taenia hydatigena larvae (4%). Generally, lungworms were the predominant helminths. The highest mean abundance was observed for M. pudendotectus, and the lowest was determined for T. hydatigena larvae. Significant differences in the prevalence and intensity were found for D. dendriticum with respect to host age and sex, respectively. The mean intensity of M. pudendotectus was significantly influenced by the sex and age of the wild boars. This study is the first report describing the presence of M. salmi, M. pudendotectus, D. dendriticum, G. urosubulatus, M. hirudinaceus, P. sexalatus, A. strongylina and H. rubidus in wild boars in Turkey. All analysed muscle samples were negative for Trichinella spp. larvae.
Helminth parasites of yellow-legged gull Larus michahellis (charadriiformes) from Bursa, Turkey
(Helminthological Soc Washington, 2022-12-01) Poyraz, Emine; BİRLİK, SEZEN; Yıldırımhan, Hikmet Sami; YILDIRIMHAN, HİKMET SAMİ; SÜMER, NURHAN; Sümer, Nurhan; Girişgin, Ahmet Onur; GİRİŞGİN, AHMET ONUR; Bursa Uludağ Üniversitesi/Veteriner Fakültesi.; Bursa Uludağ Üniversitesi/Büyükorhan Meslek Yüksekokulu.; Bursa Uludağ Üniversitesi/Fen Edebiyat Fakültesi/ Biyoloji Bölümü.; 0000-0002-0020-2708; B-5286-2017
The yellow-legged gull, Larus michahellis, is a common gull that exists in Europe, the Middle East, and North Africa. Their broad diet makes them especially susceptible to a variety of helminths. We conducted a survey of intestinal helminths of L. michahellis to determine the diversity of intestinal parasites. Thirty-five yellow-legged gulls were necropsied, and helminths were examined via light microscopy. Twenty-three of 35 (65%) of hosts examined were infected with the following helminths: 6 Digenea species (Acanthotrema armata, Brachylaima aspersae, Cryptocotyle lingua, Diplostomum spathaceum, Knipowitschiatrema sp., and Stephanoprora denticulata); 5 Cestode species (Alcotaenia microcantha, Diphyllobothrium dentriticum, Microsomacanthus ductilis, Monopylidium galbulae, and Tetrabothrius erostris); and 2 Nematode species (Contracaecum rudolphii and Synhimanthus sp.). Herein, the intestinal parasite diversity of yellow-legged gulls from Turkey is reported, and new geographical records are documented.
Helminths of the digestive tract in buteo buteo (Falconiformes: Falconidae) in Bursa province of northwest Turkey
(Tübitak Bilimsel ve Teknolojik Araştırma Kurumu, 2015-01-01) Tezel, Mehmet; Girişgin, Ahmet Onur; Birlik, Sezen; Yıldırımhan, Hikmet Sami; Şenlik, Bayram; Tezel, Mehmet; GİRİŞGİN, AHMET ONUR; BİRLİK, SEZEN; YILDIRIMHAN, HİKMET SAMİ; ŞENLİK, BAYRAM; Uludağ Üniversitesi/Veteriner Fakültesi/Parasitoloji Bölümü; 0000-0002-0020-2708; 0000-0003-2964-2245; AAB-9963-2020; B-5286-2017; AAC-1581-2020; CDI-4443-2022; GBN-0139-2022
Raptors can be parasitized by numerous helminth species due to their feeding behavior. When the parasite load is high, the bird's life can be affected. A total of 21 common buzzards, Buteo buteo, from different districts of Bursa, in Northwest Turkey, were examined for helminth infections. The results of the postmortem examination revealed that 15 of 21 buzzards (71.43%) harbored 1 or more helminth species. Seven species/genera of helminths were detected at the following prevalence rates: ascarid larvae (47.62%), Strigea falconis (38.09%), Neodiplostomum attenuatum (33.33%), Cladotaenia globifera (14.29%), Centrorhynchus amphibius (14.29%), Physaloptera alata (9.52%), and Synhimantus laticeps (4.76%). The most common helminth species was S. falconis, which was found in the small intestine of its hosts. This study is the first report to describe the presence of N. attenuatum, S. falconis, C. globifera, P. alata, and C. amphibius in the common buzzards of Turkey. This study is also the first to report the presence of S. laticeps in common buzzards, although this helminth had been previously reported in a sparrow hawk in Turkey.
High levels of tolerance between nestmates and non-nestmates in the primitively eusocial sweat bee Halictus scabiosae (Rossi) in Turkey (Hymenoptera: Halictidae)
(Springer, 2018-01-19) González, Víctor Hugo; Patton, R.; Plascencia, M.; Barthell, John F.; Girişgin, Ahmet Onur; Çakmak, İbrahim; Uludağ Üniversitesi/Veteriner Fakültesi/Parazitoloji Anabilim Dalı.; Uludağ Üniversitesi/Arıcılık Geliştirme-Uygulama ve Araştırma Merkezi.; 0000-0002-0020-2708; B-5286-2017; AAH-2558-2021; 16030783600; 57207796431
Eusocial sweat bees with variable intra-colony relatedness due to multiple foundresses and/or worker drifting may express high levels of tolerance among non-nestmates. We used circle-tube arenas to test hypotheses related to this phenomenon in Halictus scabiosae (Rossi), an obligately eusocial species with frequent inter-nest worker drifting. We conducted experiments in mid-July with bees from a nest aggregation found on the Uludag University campus, near the city of Bursa, in the Republic of Turkey. We recorded high frequencies of tolerant behaviors in both nestmate and non-nestmate trials. Among tolerant behaviors, mutual passing was more common in pairs of nestmates while non-aggressive contacts were more common in non-nestmate pairs. Moderate levels of aggression were frequent, particularly in nestmate trials, and avoidance was more common in non-nestmate pairs. Except for the moderate levels of aggression, our results are similar to those on Lasioglossum malachurum Kirby, another obligately eusocial species with strong tolerance for conspecifics and with nests that often include a mixture of related and unrelated workers. Thus, our observations support the hypothesis that reduced intra-colony relatedness, resulting from multiple foundresses and/or drifting among conspecific colonies of eusocial sweat bees, is correlated with high levels of tolerance among nestmates.
Hypothetical study of small hive beetle aethina tumida infestation in honeybees, risk commodities and probabilities for its introduction in Turkiye
(Kafkas Üniversitesi Veteriner Fakültesi Dergisi, 2022-10-10) Girişgin, Ahmet Onur; Aydın, Levent; Yörük, Yunus Emre; GİRİŞGİN, AHMET ONUR; AYDIN, LEVENT; Yörük, Yunus Emre; Bursa Uludağ Üniversitesi/Veteriner Fakültesi/Parazitoloji Anabilim Dalı; 0000-0002-0020-2708; 0000-0002-2875-8003; 0000-0002-6412-0744; B-5286-2017; HLG-4450-2023; JIU-3315-2023
Turkiye is the second-largest honey producer globally; however, the export of honey and bee products does not adequately support the beekeeping industry. Pests account for the largest share of expenditure for agents found in honeybees in the country. Although the Small Hive Beetle (SHB) has not been detected in Turkiye, a risk assessment was performed to determine what happens if it enters the country. The risk assessment included: a) hazard identification; b) risk pathway determination; c) risk assessment for entry via the identified pathways; and d) outcome assessment for becoming endemic in Turkiye. The Risk AMP add-in program was used to assess the probability of distribution for each method of entry, pathway, and simulation. According to the simulations, the probability of SHB introduction in Turkiye varies from 0.17 per 1000 events/days (1.7 per 10000 days or 27 years) to 0.6 per 1000 events/imports (6 per 10000 days or 27 years). The highest likelihood of introduction comes from fruit import (11/15) and soil/compost import (4/15). The mean probability of introducing SHB infestation after 1000 iterations of the constructed model is 0.37 per 1000 events/days (3.7 within 10000 days or 27 years). Finally, the simulated average cost of SHB after the possible introduction is 523 million US $ for Turkiye. With these simulated data, risk assessment of a non-detected pest, SHB, was determined for Turkiye.