Levent Aydin

Uludag University · Department of Parasitology

Objective: Scabies infestation is a major parasitic disease affecting both human and animal health worldwide. This study aimed to determine the distribution of scabies infestation in stray dogs in Bursa province. Methods: The study material was obtained from stray dogs suspected of mange kept in a municipal shelter in Bursa between June 2020 and...

Nosemosis is an intracellular fungus that seriously affects honeybees" health globally. This study aimed to evaluate and compare the efficacy of thyme, peppermint, eucalyptus essential oils, and nanoparticle ozone applied by spray on the frames against Nosemosis in adult honey bees under field conditions. Five treatment groups and two (negative and...

The therapeutic efficacy of various concentrations and combinations of thymol, Artemisia absinthium oil and nanoparticle ozone against Nosemosis caused by Nosema ceranae in honey bees was studied. Two-hundred colonies were examined for N. ceranae positivity and negativity under light microscopy; 119 colonies were positive and 81 colonies were negat...

Objective: Larvae of wax moths cause great harm to honeybee hives and especially stored honeycombs. In the battle for wax moth in storage rooms; biological methods of struggle that does not harm the bee, product and the environment have become important. This study was conducted to determine the effect of essential oils of cloves, thyme and bay pl...

Nosemosis is one of the most dangerous infectious diseases of honeybees in Azerbaijan and the World. Nosema ceranae is the dominant species detected in Azerbaijan, and this study aimed to detect the prevalence of the infection in the country. For this purpose, an average of 100 honeybee samples were collected from 64 hives, 24 from three regions in...

Türkiye 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 Türkiye, a risk assessment was perfor...

Ticks (Acari: Ixodidae) transmit pathogens causing some diseases like Crimean–Congo Hemorrhagic Fever, Lyme disease and Q fever. The most common method for tick control is the use of chemical acaricides, which harmful to animals, humans and the environment. The intense use of these products has also led to acaricide resistance in many tick species....

Küresel pestisit kullanımı, hayvanların ve insanların hastalık vektörlerini kontrol etmek ayrıca hayvansal ve bitkisel üretimini artırmak için son yıllarda çarpıcı bir şekilde artmıştır. Bu artış toprakta, suda, hayvansal veya bitkisel ürünlerde pestisit kalıntılarına, hedef dışı canlılar üzerinde olumsuz etkilere, çevre kirliliğine ve zararlılarda...

Küresel pestisit kullanımı, hayvanların ve insanların hastalık vektörlerini kontrol etmek ve ayrıca hayvansal ve bitkisel üretimini artırmak için son yıllarda çarpıcı bir şekilde artmıştır. Bu artış toprakta, suda, hayvansal veya bitkisel ürünlerde pestisit kalıntılarına, hedef dışı organizmalar üzerinde olumsuz etkilere, çevre kirliliğine ve zarar...

Ticks feed on a wide variety of mammals, birds, reptiles, and even amphibians. The majority of ticks choose specific animal species that are of no medical or veterinary importance for feeding, while others grasp a wide range of hosts, such as pet-breeding animals or humans. They can also transmit many human and animal pathogens include viruses, bac...

Bu çalışmada, Arion İlaç Ar-Ge Merkezi ve Bavet İlaç San. ve Tic. A.Ş. tarafından geliştirilen esansiyel yağ karışımı ile vitamin bileşiklerinin (Noseba®), Nosema ceranae ile doğal enfekte balarısı kolonilerinde etkinliğinin araştırılması amaçlanmıştır. Çalışma süresince kullanılan kolonilerde sadece N. ceranae bulunduğu, PCR ile daha önceki bir ça...

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...

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 mic...

Spinosad (SPN) and abamectin (ABM) are used in poultry premises to control external parasites including red mites (Dermanyssus gallinae). This study aimed to determine SPN (spinosyn A + spinosyn D) and ABM residues in egg and edible tissues of laying hens following spray application. A total of 36 laying hens were divided into four groups of nine a...

Nosema apis ve Nosema cerenae ergin bal arılarında (Apis mellifera) Nosemosis’e neden olur ve bu etkenler ergin arıların bağırsak sistemine yerleşir. Nosemosis en yaygın arı hastalıklarından birisidir ve dünya çapında önemli arı kayıplarına neden olur. Bu hastalık direkt olarak; sindirim sistemi bozukluklarına, arıların ortalama ömrünün azalmasına,...

In this study, to produce single-use bee-repellent fabrics, a variety of essential oils were encapsulated with gum arabic wall material at a 1:5 ratio of wall to the core substance. The following core substances were used: lavender oil, laurel oil, fennel oil, N, N-diethyl-3-methylbenzamide (DEET), lavender + laurel oil, lavender + fennel oil, laur...

Natural medicines such as formic acid, oxalic acid, thymol and menthol have recently been used as alternative treatments against the honey bee parasitic mite varroa. The aim of this study was to observe and examine their impact on Heat Shock Proteins (HSP 70) in the brain tissues of bees. For this purpose, seven different treatment groups were crea...

Propolis has antibacterial, antiviral, antifungal, anti-inflammatory, antitumoral, antioxidant, immunomodulatory, tissue regeneration, anti-ulcer, analgesic, local anaesthetic, and antiseptic effects related to its chemical components. The aim of the present study was to determine certain biological active phenolic compounds and their levels in pro...

The aim of this study was to determine changes in some biochemical parameters in the healthy and infected sheeps and goats with Theileriosis. Sixty-five sheep and 67 goats were used in the study. Blood samples were tested for the presence of Theileriosis using PCR and RLB. 3.07% of sheep and 3.06% of goats blood samples were found positive with The...

In this study, we aimed to determine the prevalence of Nosema spp. in honeybees of Turkey. For this aim, adult honeybee (Apis mellifera) samples were collected from 1621 colonies within 95 apiaries located in 22 provinces of Turkey. Samples were examined microscopically. In case of positivity, spore identification was done by multiplex PCR. At the...

The aim of this study was to determine diagnostic value of cELISA in anaplasmosis in clinically suspected animals and to compare the cELISA results with the clinical examination results. For this purpose a total of 720 ruminants (457 cattle, 146 sheep, 117 goat) were examined in terms of clinical signs. Eighty-eight ruminants consisting of 61 cattl...

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 exam...

Ticks (Acari: Ixodida) are an important group of ectoparasites of vertebrates. Most species are known vectors of diseases including Lyme disease, Q fever, and Crimean-Congo hemorrhagic fever. A 3-year research was conducted in Antalya, Turkey, to determine tick species composition, seasonal abundance, and spatial distribution. The study was carried...

The aim of this study was to determine the seroprevalence of Anaplasma phagocytophilum infections in rural areas of Bursa Province, where vector ticks and blood-sucking flies are commonly found. In total, 150 blood samples were collected from people living in four different locations where vector ticks are common, and 45 blood samples were collecte...

American Foulbrood and European Foulbrood diseases of honeybees were examined in 725 beehives from 23 apiaries located in the South Marmara Region of Turkey. We determined that 19 apiaries were infected and the suspected clinical signs of foulbrood diseases were investigated in 102 beehives by PCR and cultural method. Broods and combs from colonies...

In this study, a total of 19866 samples which were collected from humans who applied to the hospitals with tick bites in the western part of Turkey (Bursa) between the years 2007 and 2011 (from February to November) were examined. Approximately 10% (1985) of samples were found as non-ticks like bee stings, lice, fleas and other arthropods. The tick...

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 st...

The aim of the study was to determine the prevalence of chalkbrood disease co-occurring with and without nosema disease, in order to develop a potential model for decisions about initiating treatment for Nosema apis infection. In addition, the prevalence of Malpighamoeba mellificae (amoeba disease) in nosema-infected colonies was examined. Forty ou...

In Turkey, arthropod-borne diseases such as human babesiosis, dirofilariasis, leishmaniasis, malaria, lymphatic filariasis, onchocerciasis, anthrax, bartonellosis, louse-borne relapsing fever, lyme disease, plague, trench fever, tularemia, epidemic typhus, tick-borne typhus, Crimean-Congo hemorrhagic fever, phlebovirus infections, tick-borne enceph...

Crimean-Congo hemorrhagic fever (CCHF) is an increasing health concern in Turkey since 2002. There were also some recent human cases from the South Marmara region of Turkey; thus, a tick survey was performed, and possible vector tick species for the CCHF virus were determined in the region. A total of 740 adult ticks were collected from infested li...

Flumethrin is one of many pesticides used for the control and treatment of varroatosis in honey bees and for the control of mosquitoes and ticks in the environment. For the control of varroatosis, flumethrin is applied to hives formulated as a plastic strip for several weeks. During this time, honey bees are treated topically with flumethrin, and h...

The acaricidal activity of an essential oil obtained from aerial parts of Origanum bilgeri P.H. Davis (Lamiaceae), an endemic species in Turkey, and its major constituents, carvacrol was evaluated against unfed adults Rhipicephalus turanicus Pomerantzev (Acari: Ixodidae) collected from Kepez, Antalya. The composition of the essential oil was analyz...

Acaricidal effects of three Labiatae essential oils extracted from ariel parts of Thymus sipyleus Boiss. subsp. sipyleus, Mentha longifolia L., and Dorystoechas hastata Boiss. & Heldr. ex Bentham on 10-day-old Rhipicephalus turanicus Pom. (Acari: Ixodidae) larvae were evaluated by using the larval packet test bioassay. Serial dilutions of the three...

Colony defence differences between two honey bee subspecies Apis mellifera cypria and A. m. caucasica are reported. A. m. cypria formed significantly (P < 0.001) more defensive balls of bees covering intruders than A. m. caucasica in response to a predatory wasp attack. Although there were differences in ball formation, the number of bees attacking...

This study was performed to determine the efficacies of Lavandula officinalis, Foeniculum vulgare, and Laurus nobilis essential oils on the control of Varroa destructor (Acari: Varroidae), the most common parasite of honeybees (Apis mellifera L.). Experimental colonies from the province of Bursa, Turkey, were divided into 5 homogeneous groups of 8...

The aim of the present study was to determine the identity, seasonal activity and distribution of tick species of cattle in the West Aegean region of Turkey between June 2006 and May 2008. Nine villages within three provinces, viz. Manisa, Izmir and Aydin, were included in the study and a total of 75 animal barns were visited monthly for a period o...

The aim of the present study is to design the stacking sequence of the laminated composites that have low coefficient of thermal expansion and high elastic moduli. In design process, multi-objective genetic algorithm optimization of the carbon fiber laminated composite plates is verified by single objective optimization approach using three differe...

A total of 19,679 adult ticks were collected from 443 cattle in 9 villages in the West Aegean region of Turkey over 2 years (June 2006-May 2008). Th irteen out of the 19,679 adult ticks were identifi ed as Hyalomma rufi pes (12 adult males and 1 female). Th e ticks were identifi ed according to their characteristic dark coloured conscutum and scutu...

The ixodid ticks observed during whole year can transport numerous bacterial, viral and parasitic diseases especially on spring and summer season to the cows in Turkey. Synthetic pyrethroid group drugs were preferred because of their effect, ease of use and no residue on milk / meat against tick infestations of cows. The aim of this study is to det...

Objective: Crimean-Congo hemorrhagic fever (CCHF) virus causes a severe disease in humans, with a mortality of up to 30%. The geographical environment of our country is suitable for ticks. The aim of this study was to evaluate the clinical, and laboratory characteristics of children admitted for tick bites and determine the species of tick removed...

This paper presents a closed form solution to the dynamic stability problem of a beam-column system with hinged ends loaded by an axial periodically time-varying compressive force of an elliptic type, i.e., a 1cn2(τ, k 2) + a 2sn2(τ, k 2) + a 3dn2(τ, k 2). The solution to the governing equation is obtained in the form of Fourier sine series. The re...

The acaricidal activity of a volatile essential oil hydrodistillate of Satureja thymbra L. (Lamiaceae) and its major constituents, carvacrol and gamma-terpinene, were evaluated against field-collected unfed adult Hyalomma marginatum. The distillate was tested against this tick species at 5, 10, 20, and 40 microL/L while the two major components wer...

ZET: Bu çalışmada, Bursa yöresinde Varroa destructor ile doğal bulaşık olan balarısı kolonilerinde (polen tuzaklı kovanlarda) Apivar'ın (Amitraz) etkinliği araştırılmıştır. V.destructor ile doğal olarak bulaşık 40 koloni yirmişer koloniden oluşan 2 gruba ayrılmıştır. Birinci grup Apivar strip ile 6 hafta süre ile sonbaharda tedavi edilmiş, ikinci g...

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 lact...

This study considers multi-objective optimal design of the fiber reinforced symmetric-balanced laminated composites using genetic algorithms. MATLAB Genetic Algorithm and Direct Search Toolbox is used to obtain Pareto-optimal design for three different model problems. The objectives of the problems are to maximize the Young's moduli and minimize th...

The acaricidal efficacy of ceramic tiles treated at field application rates with either spinosad (Mozkill 120 SC, 0.01 g ai/m(2)), deltamethrin (Impotek Deltamethrin EW, 0.01 g ai/m(2)), permethrin+esbiothrin (Chrysamed, 0.1 g ai/m(2)), chlorpyrifos-methyl (Chlortoks EC 50, 0.2 g ai/m(2)) or a mixture of alpha-cypermethrin/tetramethrin/piperonyl bu...

Honey samples, collected from the Southern Marmara region of Turkey, were analysed for erythromycin residues by liquid chromatography-mass spectrometry using electrospray ionization in the positive ion mode (LC-ESI-MS). Fifty samples, comprising chestnut, pine, linden and multi-flower honeys, were collected directly from hives and analyzed. The lim...

The acaricidal effects of the volatile essential oil Origanum minutiflorum O. Schwarz & P.H. Davis (Lamiaceae) against adult Rhipicephalus turanicus was evaluated at a variety of concentrations and exposure times. Generally tick mortality increased with concentration and exposure. Ticks exposed to vapors from cotton wicks containing at least 10mul/...

This study is concerned with the fracture of an infinite thick-walled cylinder. The inner surface of the cylinder is stress free and the outer is rigidly fixed. The cylinder having a ring-shaped crack located at the symmetry plane is subjected to distributed compressive load on its surfaces. The Hankel and Fourier transform techniques are used for...

Turkey's tick fauna is composed of about 32 species in two families and ten genera in mammals, reptiles, and birds. The ticks of veterinary significance in the family Ixodidae comprise seven genera with 28 different species. Ixodes spp. are mostly seen in northern Turkey. It is likely that the high rainfall and the intensive forest in this area may...

The mite formerly known as Varroa jacobsoni is one of the major problems in beekeeping worldwide. Recently, it was shown that this pest is not V. jacobsoni, which chiefly infests the nests of Apis cerana in the Malaysia-Indonesia region, and the widespread pest was recognized with the new name, V. destructor. Morphometric analysis was performed on...

Hayat Group in Izmit, Turkey, has installed a cogeneration system to reduce the cost of thermal energy used in drying tissue paper using high temperature and high drying rates. The basic elements of the cogeneration system include two natural gas fired gas turbines, Brunneschweiler Yankee hood, two steam boilers, four dust burners, absorption chill...

Nosema bombycis (Naegeli, 1857) is the causative agent of the "Pebrine disease" in silkworms. N. bombycis spores were found in silkworm samples originating from the Hatay, Bursa and Bilecik provinces. Clinical signs were observed in the infected silkworm larvae. Because of the transovarial transmission risk, all the infected silkworm colonies were...

Special tools and skilled labor are required to reduce house-dust mite allergens in carpets. The main house-dust mite allergen is Der p 1, a soluble protein found in high abundance in woolen carpets. Current chemical treatment options are either unsafe or ineffective in eradicating Der p 1. Here, we present an effective, safe, and easy application...

A female arthropod was found on a bumble bee and was found to be an acaria belonging to the genus Macrocheles sp (Acarina: Macrochelidae). This is the first time that the parasitic acaria, which is found in many parts of the world, has been reported on bumble bees in Turkey.

The aim of the study was to determine the prevalence of chalkbrood disease co-occurring with and without nosema disease, in order to develop a potential model for decisions about initiating treatment for Nosema apis infection. In addition, the prevalence of Malpighamoeba mellificae (amoeba disease) in nosema-infected colonies was examined. Forty ou...

Pollen traps, in conjunction with walnut leaf smoke or mint leaves, were tested as a control for Varroa destructor. Experimental colonies were left untreated for one year prior to use in this study. Four treatment groups were tested: I - walnut smoke+pollen trap, II - paper smoke+pollen trap, III - walnut smoke only, and IV - mint leaves+pollen tra...

A nine-week-old female Doberman Pinscher pup was presented with paraplegia and progressive pelvic limb hyper-extension. The pup had a 1:800 serum antibody titre to Neospora caninum by indirect fluorescent antibody test. Diagnosis was based on clinical signs and serologic examination. The dog died after 18 days therapy with sulphadiazine-trimethopri...

This is the first extensive study of the incidence of varroa (Varroa destructor) and tracheal mites (Acarapis woodi) in Turkish honey bees (Apis mellifera). Samples were taken from 204 colonies in 39 apiaries spread over five regions of Turkey. Fifty bees from each colony were dissected in the laboratory and examined under stereo and compound micro...

This study reports the results of studies designed to search O. megnini nymphs in cattle. For this purpose, 20 cattle in Kelhalil village in Malatya Doǧanşehir county were examined in November 1988. Seven mites were collected during this study and two of these mites were first stage O. megnini nymphs. The rest were second stage well fed O. megnini...

Marketed honey samples (the products of 15 different firms obtained from superstores), and raw honey (obtained directly from 11 different apiaries from the Black Sea and Marmara regions of Turkey) were analyzed for bacteria species presence. Out of the 26 honey samples, bacteria were isolated in 23. Twice the number of species was isolated from mar...

In this review article, the new control and prophy laxi strategies of the honey bee mite is discussed. Varroa destructor strain Korean type previously has been known as Varroa jacobsoni in Turkey. It is discussed soil-inhabiting two fungal species of imp ortance for Varroa control is.

The goal of this study was to isolate bacteria and fungi sp. from 24 combs taken from different apiar ies, and 11 commercial foundations and their effects on honeybee and human health in Bursa-Yalova provinces. Washing solutions, taken from suspected comb cells and commercial foundations for AFB, EFB causative agents Paenibacillus alvei and Melisso...

This survey was carried out to determine honeybee pest and diseases in Bursa-Yalova provinces, Southe rn Marmara region of Turkey, in March 2002. According to survey resul ts, 70% of beekeepers were members to Beekeeping Association, average colony no. 67, 72% of colonies had polen traps, fal l and winter colony losses 24.3% and varroa was the most...

ZET Bursa'daki bir sığırcılık işletmesindeki buzağılarda kaşıntı şikayeti neticesinde yapılan incelemede buzağıların Bovicola bovis ve Linognathus vituli bit türleriyle miks enfeste oldukları belirlenmiştir. Bitlerle enfeste buzağılarda %1'lik flumethrinin dökme çözeltisinin etkinliğini belirlemek amacıyla, her iki tür bitle miks enfeste 10 buzağıy...