Şinasi Umur - Academia.edu (original) (raw)

Papers by Şinasi Umur

DergiPark (Istanbul University), Dec 1, 2011

This study was carried out to determine the gastrointestinal helminths and their prevalence in th... more This study was carried out to determine the gastrointestinal helminths and their prevalence in the wild rats. For this purpose 34 wild rats were necropsied, and, 27 out of 34 were found infected. Prevalence of helminths were as fallow Strongyloides ratti (79.41%), Heterakis spumosa (79.41%), Hymenolepis diminuta (35.49%) and Nippostrongylus brasiliensis (20.59%).

Travaux du Muséum National d'Histoire Naturelle "Grigore Antipa", 2011

We present the results of the studies on the chewing lice collected during the period 2009-2010 f... more We present the results of the studies on the chewing lice collected during the period 2009-2010 from 32 wild birds belonging to 11 species, in the Kızılırmak Delta of Turkey. From the 13 chewing louse species identified in the studied material, six of them are new records for the parasitological fauna of Turkey, namely:

Parasitology International, Feb 1, 2014

Larval forms of the genus Hysterothylacium have been previously reported in teleost fish from the... more Larval forms of the genus Hysterothylacium have been previously reported in teleost fish from the North African coasts of central Mediterranean Sea by morphological analysis. In the present study, samples identified morphologically as Hysterothylacium aduncum (n = 62), from Merluccius merluccius, Trachurus mediterraneus and Pagellus erythrinus from different geographical locations of the Tunisian coasts, were genetically characterised by sequences of the first (ITS-1), the 5.8S and second (ITS-2) Internal Transcribed Spacers (ITS) of nuclear ribosomal DNA (rDNA). Comparison of the sequences obtained with those available in public gene databases confirmed that all the samples from the Tunisian coasts belong to a single species, namely H. aduncum. All specimens from the Tunisian coasts showed one indel in position 787 in ITS-2 sequences not reported by any of the previously published sequences from the Atlantic and Pacific Oceans, Adriatic Sea (Mediterranean Sea) and the East Greenland Sea, suggesting the existence of a population-specific pattern exhibiting a low differentiation of this parasite in this area. This is the first molecular characterization of H. aduncum from the Tunisian coasts using ITS rDNA sequences which allows the definition of genetic markers for their unequivocal identification, and provides further biological data on these nematodes in marine fish off the Tunisian coasts, improving the picture of the occurrence of these taxa in the North African coasts of central Mediterranean Sea.

Iranian Journal of Fisheries Sciences, Jan 10, 2015

The presence of the anisakid nematode Hysterothylacium gadi aduncum (Rudolphi, 1802) is reported ... more The presence of the anisakid nematode Hysterothylacium gadi aduncum (Rudolphi, 1802) is reported for the first time in cultured rainbow trout (Oncorhynchus mykiss Walbaum, 1792) as a new host in freshwater farms from Turkey. This marine parasitic nematode is thought to complete the life cycle in fresh water and rainbow trout could act as the definitive host for this parasite under fresh water culture conditions. Mortalities in the rainbow trout infected with H. gadi aduncum (Rudolphi, 1802), were seen after three to four months period of feeding program with marine fish offal (Sprattus sprattus, Engraulis encrasicolus) and pellet fish food. In the present study, the main cause of mortalities was detected as stomach obstruction formed by aggregation of the adult nematodes which developed from infective third stage larvae. Original measurements and figures are presented.

Turkish Journal of Veterinary & Animal Sciences, 2023

The genus Philophthalmus, Looss 1899 (Echinostoma: Philophthalmidae) is a cosmopolitan group of p... more The genus Philophthalmus, Looss 1899 (Echinostoma: Philophthalmidae) is a cosmopolitan group of parasites that infects the eyes of birds and mammals, including humans. A great egret (Ardea alba) was found dead in Kızılırmak Delta, Samsun, Turkey. The bird was transported to the Faculty of Veterinary Medicine, Ondokuz Mayıs University, Samsun Turkey, for a necropsy. In the parasitological examination, a trematode was detected in the eye, and then it was identified as Philophthalmus lucipetus. This is the first report of the zoonotic parasite P. lucipetus in Turkey.

Veterinary Parasitology: Regional Studies and Reports, Aug 1, 2018

Animal fasciolosis occurs every year as an occasional problem in Samsun Province, especially of g... more Animal fasciolosis occurs every year as an occasional problem in Samsun Province, especially of grazing animals in the Kizilirmak and Yesilirmak Deltas and surrounding areas. On occasions, dead animals or internal organs, including livers, lungs and hearts, are submitted to the Parasitology Department of the Faculty of Veterinary Medicine at Ondokuz Mayis University for diagnostic purposes. Upon diagnosis of fasciolosis, the owners and veterinarians are informed about prevention measures and treatment of the disease. In that context, the livers and gallbladders of one sheep, one cow and two water buffalo, suspected of having died as a result of fasciolosis, were submitted to the parasitology laboratory of the faculty in 2015 and 2016. All organs were examined thoroughly and 38, 1076, 456 and 714 F. gigantica were collected from the sheep, cow and buffaloes' livers and gallbladders, respectively. In addition to these cases, according to information received from animal breeders and some veterinarians, at least 5 sheep and 3 cattle had also died due to fasciolosis in the previous two years. Because of the re-occurrence of F. gigantica cases in recent years, it is pertinent to discuss the past and current situation surrounding this parasite in Turkey.

Research in Veterinary Science

Veterinary Medicine and Science

BackgroundProsthogonimus species is considered one of the most important pathogen parasites of po... more BackgroundProsthogonimus species is considered one of the most important pathogen parasites of poultry and wild birds because it causes defective egg formation, and deaths can be seen as a result of peritonitis. The genus Prosthogonimus is all‐around and has been reported in many areas worldwide. This study is research on the presence of Prosthogonimus species, one of the most pathogen trematodes of birds, in Türkiye and wild birds.ObjectiveWe conducted the present study to investigate the presence and prevalence of Prosthogonimus spp. in Türkiye.MethodsWe studied 183 individuals of 62 wild bird species in the Kızılırmak Delta. Wild birds that died naturally were necropsied and searched for oviducal flukes.ResultsAfter performing our parasitological study, we found that 4/180 birds were infected with Prosthogonimus spp. Aythya ferina, Ciconia ciconia, Erithacus rubecula and Turdus philomelos were infected with Prosthogonimus pellucidus, Prosthogonimus macrorchis, Prosthogonimus cune...

Turkish Journal of Veterinary & Animal Sciences

Th e aim of this study was to identify ectoparasites of wild roe deer (Capreolus capreolus) livin... more Th e aim of this study was to identify ectoparasites of wild roe deer (Capreolus capreolus) living in natural areas of Samsun Province that were wounded by car accidents or hunters between 2007 and 2010. A total of 90 ticks, 60 lice, and 5 deer keds were collected from 17 animals. Five tick species (Ixodes ricinus, Rhipicephalus bursa, Rhipicephalus turanicus, Haemaphysalis punctata, and Haemaphysalis concinna), 1 louse species (Cervicola meyeri), and 1 deer ked species (Lipoptena cervi) were identifi ed. Cervicola meyeri and L. cervi were identifi ed for the fi rst time in Turkey.

Acta Parasitologica, 2020

Purpose This study was carried out to determine the paramphistome species parasitizing water buff... more Purpose This study was carried out to determine the paramphistome species parasitizing water buffaloes (WBs) grazing in the Kızılırmak Delta in Samsun Province, Turkey, and the intermediate hosts of the parasites. Methods Between August 2016 and July 2018, abattoirs in Samsun Province were visited weekly and 139 slaughtered WBs were examined for paramphistome species. In the same period, 550 snails (300 Galba truncatula , 200 Physella (Physa) acuta and 50 Planorbis planorbis ) were collected from pastures grazed by WBs during monthly sampling in the spring and autumn. Adult parasites were identified through the use of histological and molecular methods and larval stages were identified with a molecular method. Results Forty-five of the 139 WBs (32.4%) were infected with species of the family Paramphistomidae and a total of 4761 (mean 105.8) parasites were collected from them. The genera Paramphistomum and Calicophoron were distinguished from each other by examining the development status of the pars musculosa and the degree of lobulation of the testes in histological sections. Calicophoron daubneyi was present in all the infected animals and Paramphistomum cervi in only 3 of the same animals. There were larval forms in only 19 of the specimens identified as G. truncatula. Calicophoron daubneyi was molecularly diagnosed in 12 of the 19 infected G. truncatula and this result was confirmed by PCR and PCR–RFLP. Calicophoron daubneyi was also identified molecularly as being present in all 45 infected adult WBs and as developmental stages in 12 of 300 (4%) intermediate hosts, G . truncatula . The DNA sequences from the adult parasites in the definitive hosts and larval forms in intermediate hosts were allocated the codes MH939278 and MH939279, respectively, in GenBank. Conclusion For the first time in Turkey, C. daubneyi was identified molecularly and its intermediate host was identified as G. truncatula . Calicophoron daubneyi was identified as the overwhelmingly dominant paramphistome species in WBs in the Kızılırmak Delta, with P. cervi found in mixed infections in only three animals.

DergiPark (Istanbul University), Jun 1, 2016

The World Health Organization considers leishmaniasis to be one of the most important zoonotic di... more The World Health Organization considers leishmaniasis to be one of the most important zoonotic diseases with approximately 350 million people in 98 countries at risk of contracting the disease. The leishmaniasis also remains a severe public health problem in Turkey. It is important to evaluate the prevalence of Canine leishmaniasis (CanL) for designing control policies. In the present study, we report for the first time the occurrence of Leishmania infection in dogs living in the Middle Black Sea Region of Turkey. For the diagnosis of the infection parasitological (direct microscopic examination of lymph nodes), serological (ELISA) and molecular (kDNA-PCR) methods were performed using blood samples obtained from 240 dogs. Sand flies were also collected using CDC miniature light traps from the same locations for testing Leishmania presence by kDNA-PCR. Only one (0.41%) dog out of 240 was found to be positive by both tests. Amastigotes of Leishmania spp. were detected in the same animal lymph node aspirate sample. A total of 18 sand flies were collected and no Leishmania was detected Phlebotomus spp. sample pool. Our results showed that CanL could have public health implications and future screening studies are needed in this region of Turkey.

Purpose Bumblebees are an important group of insects in the pollination of various vegetables, fr... more Purpose Bumblebees are an important group of insects in the pollination of various vegetables, fruits, oilseeds, legumes, and the fodder crops. Compared to honeybees, they have a wider choice of hosts and a longer flight period. These bees are used especially for the pollination of plants in greenhouses and are commercially produced for this purpose. Recently, serious decreases have been occurring in bumblebee populations due to various reasons such as pathogens and parasites, and some of species are even threatened with extinction. In this study, the presence of various pathogens and parasites was investigated by PCR in Turkish populations. Methods A total of 172 Bombus terrestris (Linnaeus,1758) samples (21 samples from commercial enterprises, 79 samples from greenhouses and 72 samples from nature) collected from three provinces (Antalya, Mersin and İzmir) where greenhouse cultivation is intensively carried out in Turkey. 89 of these samples were collected in the spring and 83 in ...

Turk Veterinerlik Ve Hayvancılık Dergisi, 1997

Türkiye parazitolojii dergisi / Türkiye Parazitoloji Derneği = Acta parasitologica Turcica / Turkish Society for Parasitology, 2010

Helminths of equines are one of the most important agents of parasitic diseases. Therefore, many ... more Helminths of equines are one of the most important agents of parasitic diseases. Therefore, many studies have been conducted on helminths of equines in Turkey. In this article, a check list and prevalence rates of helminths of equines in Turkey have been given.

Helminthologia, 2010

The nematode Schulmanela petruschewskii (Shulman, 1948) was identified during the parasitological... more The nematode Schulmanela petruschewskii (Shulman, 1948) was identified during the parasitological examination on the liver parenchyma in one specimens of a cultured rainbow trout (Oncorhynchus mykiss) which reared in Derbent Dam Lake in Samsun, Turkey (41°25′6′’ North latitude, 35°49′52′’ East longitude) in August 2008. This parasite species was not previously reported from Turkey. With the present study we report S. petruschewskii for the first time in Turkey. This specimen which is a parasite of cultured rainbow trout (Oncorhynchus mykiss) is a new record for the Turkish parasite fauna. Original measurements and figures are presented.

Journal of Microbiology, Immunology and Infection, 2017

Background/Purpose: The aim of the present study was to estimate the prevalence of Fasciola hepat... more Background/Purpose: The aim of the present study was to estimate the prevalence of Fasciola hepatica infection in sheep in the Black Sea region of Turkey. Methods: Samples from 213 sheep were collected randomly in Samsun, Tokat, and Sinop from September 2005 to January 2007 and tested by indirect enzyme-linked immunosorbent assay (ELISA) and Western blot analysis using F. hepatica excretory-secretory (E/S) antigens. Results: The distribution of ELISA-positive samples for F. hepatica infections out of a total of 213 sheep serum samples was 23/71 (32.4%), 15/59 (25.4%), and 29/83 (34.9%) in Samsun, Sinop, and Tokat, respectively. The immunodominant proteins were determined by Western blot analysis using molecular weight markers of 14 kDa, 20 kDa, 24 kDa, 27 kDa, 33 kDa, 45 kDa, and 66 kDa and extracted from sera of sheep that were positive for Fasciola spp. eggs and also hyperimmune sera from rabbits immunized with E/S antigens. Conclusion: The ELISA-positive results were confirmed by Western blot analysis. As a result, seroprevalence of F. hepatica infection was found in 31.4% of sheep from the Karayaka breed in the Middle Black sea region of Turkey.

Journal of the Japan Veterinary Medical Association, 1995