Animal Sciences Commons^™

Antimicrobial Sensitivity Of Bacterial Isolates And Molecular Detection Of Staphylococcus Aureus And Staphylococcus Pseudintermedius Isolated From Urinary Tract Infections Of Canines, Mankaran Kaur, Gursimran Filia, Ashok Kumar

Turkish Journal of Veterinary & Animal Sciences

Urinary tract infections (UTIs) are commonly encountered in canine clinical cases and can result in significant health complications if not properly treated. This study isolated and identified bacterial pathogens from dogs with clinical signs of UTI. Antimicrobial susceptibility profiling was performed on the bacterial isolates and further molecular detection of Staphylococcus aureus and Staphylococcus pseudintermedius was also performed. A total of 104 urine samples were collected via cystocentesis and catheterization. Bacterial identification was conducted using standard bacteriological procedures, and antimicrobial susceptibility was assessed using the disc diffusion method with 21 different antimicrobial discs. Polymerase chain reaction (PCR) was used for …

Parameter Optimization For Runs Of Homozygosity (Roh) Detection In The Pig Genome, Timofey Romanets, Anna Korobeynikova, Lyubov Getmantseva, Maria Kolosova, Elena Romanets, Ilona Bakoeva, Varvara Shevtsova, Anatoly Kolosov, Alexander Maksimov, Siroj Bakoev

Turkish Journal of Veterinary & Animal Sciences

The present study analyses the influence of various parameters on the accuracy and reliability of ROH identification procedures, as well as their relationship with inbreeding and genetic diversity in Duroc pig populations. The genotyping data of 70 Duroc pigs obtained using PorcineSNP80v1 chips were used, and the effects of LD pruning and ROH calling parameters were evaluated. It was found that the use of strict basic filters during the execution of the --homozyg command reduces the likelihood of false positives and contributes to the more accurate identification of ROH. The results show that LD pruning reduces the detection of random …

Determination Of Serum Cortisol Levels As A Stress Marker In Hospitalized Dogs, Emre Tüfekçi̇, Gencay Eki̇nci̇, İlknur Karaca Bekdi̇k, Ali̇ Cesur Onmaz, Öznur Aslan, Vehbi̇ Güneş, İhsan Keleş, Mehmet Çi̇ti̇l

Turkish Journal of Veterinary & Animal Sciences

In veterinary medicine, various diseases and surgical procedures may require the isolation and hospitalization of dogs, allowing for more effective individual patient monitoring and increasing the chance of successful treatment by preventing unnecessary drug use. However, this process can be stressful. Our study aimed to determine the changes in cortisol levels, one of the primary stress hormones responsible for stress responses, in individually hospitalized dogs. In addition, epinephrine (EPN) levels, another stress marker, as well as hematological and some biochemical values were measured and vital signs were recorded. The dogs included in the study were divided into 3 groups: healthy, …

Rapid Epigenetic Response To Salinity Stress In An Invasive Mussel, Mytilus Galloprovincialis, Andrzej Furman, Açelya Eren, İbrahi̇m Raşi̇t Bi̇lgi̇n, Hati̇ce Aygün Karaçay

Turkish Journal of Zoology

The Mediterranean blue mussel (Mytilus galloprovincialis) is a well-known invasive species recognized for its remarkable ability to tolerate a wide range of environmental conditions. Here, we investigated DNA methylation changes in M. galloprovincialis exposed to a rapid water salinity decrease. Methylation profiles in M. galloprovincialis were recorded before salinity stress was applied (at 35‰), and then at 3, 9 and 24 h following the stress (at 25‰). We monitored these changes using the methylation-sensitive amplification polymorphism (MSAP) method. Methylation levels continued to vary over the 24 h period following stress exposure, indicating that the underlying physiological processes may have changed …

Phylogenetics Of Cyrtodactylus In West Nusa Tenggara: A New Distribution Record Of Cyrtodactylus Jatnai From Lombok Island And A Cryptic Species From Sumbawa Island, Sandra Rafika Devi, Rury Eprilurahman, Tuty Arisuryanti, Yuliadi Zamroni, Imran Sadewo, Windi Edriyanti, Maulana Faiz Ilham Kholiq, Evelyn Elvira

Turkish Journal of Zoology

Cyrtodactylus is one of the most diverse vertebrates of the Gekkonidae family, first described by Gray in 1827 and widely distributed in Asia, Northern Australia, and the Pacific Islands including Wallacea. The biodiversity in West Nusa Tenggara—a region in Wallacea—has been underestimated despite high fauna endemicity. Conservation strategies are needed to maintain the stability of Cyrtodactylus populations in their habitat. Therefore, this study aims to enhance the understanding of cryptic species and potential new distribution records of the genus Cyrtodactylus in West Nusa Tenggara. Molecular character identification was carried out by isolating the ND2 gene in liver tissue using polymerase …

Bathyal Gastropod (Mollusca) Species From The Turkish Levantine And Aegean Seas, Bi̇lal Öztürk

Turkish Journal of Zoology

This study assigns 35 gastropod specimens and 23 shells collected from two sites on the Turkish Levantine and Aegean coasts at depths of 432 and 702 m, respectively, to 13 species. Among the species identified, Alvania subsoluta (Aradas, 1847), Protatlanta souleyeti (Smith, 1888), Pagodula echinata (Kiener, 1839), Pleurotomella gibbera Bouchet & Warén, 1980, Ringicula gianninii Nordsieck, 1974 and Diaphana marshalli (Sykes, 1904) are new records for the Turkish molluscan fauna; Anatoma aspera (Philippi, 1844) and Acteon monterosatoi Dautzenberg, 1889 are new records for the Levantine coast of Türkiye; and Crenilabium exile (Jeffreys, 1870) is a new record for the Turkish …

The Effects Of Montelukast Sodium On Some Biological And Biochemical Aspects, Dna Damage In Drosophila Melanogaster Adults, Ci̇hat Çeli̇k

Turkish Journal of Zoology

Montelukast sodium (MS) is a leukotriene receptor antagonist and used clinically as an antiasthma agent. MS has been hypothesized to have adverse effects in insects. To test this hypothesis, MS was added to the artificial diet of the fruit fly Drosophila melanogaster Meigen (Diptera: Drosophilidae) at different concentrations (1200, 1600, 2000, and 2400 mg/L) under laboratory conditions. The effects of MS on the survival rate and development time of D. melanogaster, as well as its effects on malondialdehyde (MDA) levels and cytochrome P450 monooxygenase (CYP450) enzyme activity in adults were investigated. The genotoxic effect of MS in whole adults was …

Ecotoxicological Assessment Of A Sunscreen-Derived Pollutant, Benzophenone-2, On Freshwater Fish (Labeo Rohita), Mina Jamil, Sajid Abdullah, Maham Riaz, Sana Aziz

Turkish Journal of Zoology

Ultraviolet filters (UVFs) are constituents of skincare products that protect skin against UV ray damage, such as suntan, sunburn, and skin tumors. Due to their ability to biotransform, UVFs are considered emerging pollutants. Benzophenone-2 (BP-2), with a yellowish crystalline appearance, is one of the widely used UVFs in skincare products. It enters the aquatic environment by washing off the skin during swimming and recreational activities and becomes hazardous to aquatic life due to its lipophilicity and bioaccumulative potential. This study was designed to evaluate the acute and chronic toxicity of BP-2 for the freshwater fish Labeo rohita. For acute toxicity, …

Morphological Variability And Systematics Of Ponto-Caspian Cladocerans Of The Genus Cercopagis Sars, 1897 (Branchiopoda: Onychopoda: Cercopagidae), Larisa F. Litvinchuk, Spartak N. Litvinchuk

Turkish Journal of Zoology

In recent decades, significant changes have occurred in the composition of zooplankton, especially in the Ponto-Caspian Basin. An important component of zooplankton in this region is cladocerans of the genus Cercopagis. However, the introduction of invasive species means that many species of this genus have probably become extinct. Because their disappearance molecular study of these organisms is no longer possible. Therefore, a comparative analysis of morphological variability has become more important. We studied the morphological variability of all 12 currently known species of the genus. Samples from the Caspian, Azov, Black, and Baltic Seas were analyzed. The number of species …

Design Of A Snp Panel For Highly Accurate Paternity Identification In Eşme Sheep, Onur Yilmaz, İbrahi̇m Cemal, Orhan Karaca, Cengi̇z Elmaci, Nezi̇h Ata

Turkish Journal of Veterinary & Animal Sciences

SNP paternity testing panels offer high-resolution capabilities for determining livestock paternity, thereby enhancing the reliability of genetic verification and ensuring pedigree record accuracy. In this study, we aimed to develop a SNP-based paternity test panel utilizing a 50K SNP chip for paternity testing and pedigree verification in the Eşme sheep breed. Additionally, the study sought to validate the paternity test panel. Based on data from 26 rams and 524 lambs of the Eşme sheep breed, the results indicated that the 50K SNP chip used demonstrated a very high genotyping rate, with the majority of its 53,738 SNPs exhibiting significant polymorphism. …

Development And Validation Of A High-Performance Liquid Chromatography Method For The Simultaneous Determination Of Selected Varroacidal Active Substances In Bee Health Products, Onur Demi̇r

Turkish Journal of Veterinary & Animal Sciences

The presence of substandard and counterfeit veterinary medicinal products represents a significant concern from a One Health perspective, given the potential consequences for human and animal health, as well as the environment. In this study, an isocratic flow liquid chromatography method was developed for the simultaneous determination of thymol, coumaphos, amitraz, tau-fluvalinate, and flumethrin in bee health products used for varroosis control. The chromatographic separation was conducted at a wavelength of 276 nm, utilizing an RP18e column and an acetonitrile:water mobile phase ratio of 75:25 (v/v), with a flow rate of 0.75 mL/min. The validation of the method was conducted …

Evaluating The Impact Of Starch Intake On Fecal Consistency Scores In Equines, Gülşah Kaya Karasu, Hidir Gümüş

Turkish Journal of Veterinary & Animal Sciences

Horses, as monogastric hindgut fermenters, primarily engage in microbial activity in the large intestine. Although starch is not inherently harmful, excessive intake can lead to digestive disturbances and health issues due to insufficient digestion in the small intestine, resulting in overflow into the large intestine. The purpose of the study was to evaluate the use of rapid fecal analysis, including fecal score, pH, and dry matter (DM) analysis, to understand the effects of high starch intake. The study was conducted in May 2023 at a private sport horse farm in İzmir, Türkiye and involved 24 sport horses aged 4 to …

Effect Of Water At Different Ph Levels Adjusted With Organic And Inorganic Acidifiers On The Growth Performance, Blood Biochemistry, Carcass Yield, And Meat Physicochemical Properties Of Broilers, Asad Ali Shah, Shahid Mehmood, Fazal Raziq, Muhammad Tahir Khan, Assad Ullah, Yasir Abbas, Syed Kaleem Ul Hassan, Sohail Ahmad, Smile Manzoor, Kashif Khan

Turkish Journal of Veterinary & Animal Sciences

This study evaluated the effects of varying water pH levels, adjusted with organic (formic acid) and inorganic (sodium hydrogen sulfate) acidifiers, on the growth performance, blood biochemistry, carcass yield, and meat quality of broiler chickens. The objective was to determine how these factors affect broiler health and production efficiency. In a 35-day feeding trial, 420 day-old chicks were randomly assigned to a 2 × 3 factorial design that tested two types of acidifiers (organic versus inorganic) at three pH levels (5.8, 6.8, and 7.8), with six replicates of 10 birds per treatment. Birds were provided with acidified water ad libitum …

Investigation Of The Usability Of The Difference In Body Structure As A Breeding Method In Unselected Sheep Flocks (I-Fattening Performance- Slaughter And Carcass Characteristics), Mehmet Naci̇ Oktay, Bora Özarslan

Turkish Journal of Veterinary & Animal Sciences

This study investigated the development of a meat-type sheep strain by using the differences in body structure in Kangal Akkaraman an indigenous sheep breed of Türkiye. The control group consisted of 15 male lambs born to ewes with dairy-type (DT) body structure and the experimental group consisted of 15 male lambs born to ewes with meat-type (MT) body structure. The sheep in the DT group were selected for their elegant, clear bony lines; long, thin neck; triangular body structure that widens from front to rear; and the leg length longer than the depth of the chest. In selecting sheep for …

An Updated Checklist Of The Mammals Of Türkiye, Mustafa Sözen, Faruk Çolak

Turkish Journal of Zoology

Between 1982 and 2025, the number of extant wild mammal species worldwide rose from 4170 to 6706. The Turkish mammal fauna also showed a similar trend, with the number of mammal species listed for Türkiye rising from 89 to 173 in just 33 years, from 1989 to 2021. A shift in species numbers like this calls for regular updates to Türkiye’s mammal species lists as well as the preparation of new checklists. Apart from changes in the number of species, numerous taxonomic changes and rearrangements also lead to changes in mammal lists. We arranged an updated mammal checklist by reviewing …

Nontarget Effects Of Abamectin On Cysts And Three Larval Stages Of Marine Microcrustacean Artemia Franciscana, Hashem Khandan Barani, Sahel Pakzad Toochaei, Narjes Sanchooli

Turkish Journal of Zoology

Abamectin (ABM) is a widely used pesticide in agriculture and aquaculture worldwide. However, limited information is available on the toxic impacts of ABM on nontarget marine organisms, necessitating further research to investigate the toxic impacts of ABM on marine life. Hence, this study examined the acute (0.5–2.5 μg/L for 24 and 48 h) and chronic (0.125–0.5 μg/L for 7 days) toxicity of ABM on the marine microcrustacean Artemia franciscana under different incubation conditions and at different stages of development. To simulate a more realistic environmental scenario, some of the exposure tests were conducted in the presence of food or with …

Environmental Controls On Planktonic Community Variability And Ecosystem Responses In The Romanian Black Sea, Cristina Tabarcea, Elena Bișinicu, George-Emanuel Harcotă, Aurelia Țoțoiu, Oana Vlas, Elena Pantea, Luminita Lazar

Turkish Journal of Zoology

This study examines the structure, distribution, and environmental influences on planktonic communities in the Romanian Black Sea, based on data collected from Black Sea national monitoring stations in June 2023. We assessed the qualitative and quantitative composition of phytoplankton, microzooplankton, mesozooplankton, macrozooplankton, and ichthyoplankton, alongside key environmental factors such as temperature, salinity, dissolved oxygen, and nutrient concentrations (nitrite, nitrate, ammonium, phosphate, and silicate). The results highlight the dominance of dinoflagellates within the phytoplankton community, while copepods constitute the most abundant mesozooplankton group. Species from the Codonellidae family mainly represent microzooplankton diversity, while macrozooplankton is largely dominated by the scyphozoan Aurelia …

A Comparison Between Phalangeal Skeletochronology And Cephalic Parietal Rings In Lizards, Marco A.L. Zuffi, Roberto Sacchi, Marcello Mezzasalma, Maria José Amaral, Miguel Angel Carretero, Fabio Maria Guarino

Turkish Journal of Zoology

The well-defined, layered organization of the cephalic scales in many lacertilians could offer a noninvasive alternative for estimating the individual age of these vertebrates. This study aimed to validate the method of age determination based upon the cephalic scale rings in the genus Podarcis, comparing it to phalangeal skeletochronology, a widely used and highly reliable indirect method for estimating the age of ectotherm vertebrates. We analyzed individuals of P. bocagei (n = 48), P. muralis (n = 16) and P. siculus (n = 8). For each individual, we compared the number of cephalic layers with the number of lines of …

Cytotoxic And Genotoxic Effects Of Minor Temperature Changes And Zinc Oxide Nanoparticles Synthesized Using Plantago Major On Oncorhynchus Mykiss Gonadal Cells, Semra Çi̇çek, Sevda Işik

Turkish Journal of Zoology

Temperature changes and nanoparticle exposure have emerged as critical environmental stressors with potential cytotoxic and genotoxic effects on aquatic species. This study investigates the impact of zinc oxide nanoparticles (ZnO NPs), synthesized using Plantago major leaves, on Oncorhynchus mykiss gonadal (RTG-2) cells under different temperature conditions (23 °C, 24 °C, and 25 °C). RTG-2 cells were exposed to hexagonal ZnO NPs (≤100 nm) at concentrations of 6.25, 12.5, 25, 50, 75, and 100 μg/mL for 24 and 48 h. Cytotoxicity was assessed using the sulforhodamine B assay, and genotoxicity was evaluated via the comet assay. Results demonstrated that both temperature …

The Morphologic Structure Of Some Wing Muscles In The Common Pheasant (Phasianus Colchicus), Beste Demi̇rci̇, Murat Erdem Gülti̇ken

Turkish Journal of Veterinary & Animal Sciences

Avians use significant amounts of energy during flight that is supplied by muscles. The Common Pheasant, a member of the Phasianidae family, can fly swiftly over short distances and flies to evade predators. Pheasant species are terrestrial and have a global distribution. This investigation aimed to analyze the anatomical structure of skeletal muscles in pheasants. A cohort of 20 adult pheasants consisting of an equal number of females and males (10 each) was used. Dissections were performed on 5 females and 5 male pheasants for macroscopic evaluation. The remaining samples underwent immunohistochemical staining using an antimyoglobin antibody to measure the …

Erratum To “Nitrate And Nitrite Le Ate And Nitrite Levels In Cattle F Els In Cattle Feed, Drinking Water Eed, Drinking Water, Rumen , Rumen Content, And Blood Methemoglobin Le Content, And Blood Methemoglobin Levels In Bur Els In Burdur Province Of Vince Of Türkiye”[Turkish Journal Of Veterinary And Animal Sciences 49 (3) 2025 94-101], Reyda Kiyici, Hasan Altan Akkan, Mehmet Karaca, Esra Zeybek, Bayram Kudret Karaayvaz, Fi̇rdevs Mor Savaş, Yahya Öztürk, Asim Kart, Ramazan Yildiz, Murat Bayezi̇t

Turkish Journal of Veterinary & Animal Sciences

We hereby issue this erratum to address a concern regarding Tables 6, 7, and 8 in the manuscript titled “Nitrate and nitrite levels in cattle feed, drinking water, rumen content, and blood methemoglobin levels in Burdur Province of Türkiye”. Some of the numbers in Tables 6, 7, and 8 were misprinted by mistake during the typesetting process. To ensure the accuracy of the published work, the correct tables are included for your reference.

The original article can be accessed at: https://doi.org/10.55730/1300-0128.4376

An Investigation Of The Association Of Gdf9-C.260g>A Polymorphism With Lamb Live Weight In The Akkaraman Breed, Şeyma Kökkaya, Fadi̇me Daldaban, Davut Bayram, Mehmet Ulaş Çinar, Korhan Arslan, Bi̇lal Akyüz

Turkish Journal of Veterinary & Animal Sciences

In this study, the relationship between the Growth Differentiation Factor-9 (GDF9) gene polymorphism and birth weight, as well as weights on days 30, 60, 90, was investigated in Akkaraman lambs, one of the indigenous sheep breeds of Türkiye. For this purpose, a total of 314 lambs were genotyped by PCR-RFLP method for the single nucleotide polymorphism (SNP) c.260G>A in the GDF9 gene. While GG and GA genotypes were observed in the studied breed, the AA genotype was not observed. The results showed that Akkaraman lambs were in Hardy–Weinberg (H–W) equilibrium for the GDF9-c.260G>A polymorphism (p < 0.05). In this study, a significant association was observed between GDF9-HhaI polymorphism and 30th day weight and 60th day weight in Akkaraman lambs. When the animals were analyzed according to birth type, it was observed that this factor was associated with birth weight, as well as weights on days 30, 60, and 90. It is suggested that the c.260G>A coded SNP …

Bacteria Recovered From Ear Swab Samples Of Cats With Otitis Externa And Their Antimicrobial Resistance Profiles In Kayseri, Türkiye, Emre Karakaya, Doğancan Yarim, Özgür Güran, Cansu Güran, Umut Alpman, İzzet Burçi̇n Saticioğlu, Gülteki̇n Atalan, Seçi̇l Abay, Fuat Aydin

Turkish Journal of Veterinary & Animal Sciences

This study aimed to isolate and identify bacteria from ear swab samples from cats with otitis externa and to detect the antimicrobial resistance profiles of the recovered isolates. For this purpose, ear swab samples from 100 domestic cats that were detected to have otitis externa were used. The samples collected from the animals were inoculated onto 7% defibrinated sheep blood agar and MacConkey agar, and the media were incubated at 37°C for 24-72h under aerobic/microaerobic conditions. The definition of the isolates was carried out by phenotypic tests, MALDI-TOF MS analysis, and 16S rRNA gene sequencing. Antimicrobial susceptibilities of the obtained …

Growth Curve And Serum Calcium And Magnesium Concentrations In Duck Breeders (Anas Boschas) From Hatching To The Prelaying Period Reared Under Subtropical Conditions, Vanessa Peripolli, Fabiano Dahlke, Ellen Karen Dos Santos, Maila Palmeira, Stelamaris Dezen, Robert Lenock, Elizabeth Schwegler, Juahil Martins De Oliveira Júnior, Ivan Bianchi, Paula Gabriela Da Silva Pires, Betina Raquel Cunha Dos Santos, Andressa Fernanda Campos, Fabiana Moreira

Turkish Journal of Veterinary & Animal Sciences

Optimizing duck production requires understanding growth variability and monitoring serum calcium and magnesium levelsas health indicators. This study aimed to analyze the growth curve, mortality, and serum calcium (Ca) and magnesium (Mg) levels in White Mallard ducks from hatching to the prelaying period in subtropical conditions. A total of 1100 females and 270 males were raised for 146 days. At hatch, day 6 (D6), D13, D23, D34, D50, D64, D80, D94, D111, and D146, ducks were weighed separately to assess body weight (BW). Blood samples were collected at hatch, D50, D94, and D146 to determine serum calcium and magnesium levels. …

A Morphological Study On Acanthocephalan Species From Wild Birds In Northern Türkiye, Mehmet Öztürk, Şi̇nasi̇ Umur

Turkish Journal of Veterinary & Animal Sciences

The phylum Acanthocephala contains approximately 1300 acanthocephalan species. So far, only nine acanthocephalan species of wild birds have been reported in Türkiye. To study the context of acanthocephalan diversity in wild birds in Türkiye, we examined 193 birds from 69 species belonging to 16 orders. Acanthocephalans were found in seven bird species: Centrorhynchus aluconis in Buteo buteo and Buteo rufinus, Centrorhynchus spinosus in Buteo buteo and Strix aluco, Mediorhynchus papillosus in Iduna icterina, Mediorhynchus tenuis in Luscinia svecica, Plagiorhynchus cylindraceus in Erithacus rubecula and Turdus merula, Polymorphus contortus in Anas platyrhynchos, and Sphaerirostris turdi in Turdus merula. Except for Plagiorhynchus …

Comparative Mitogenomics Of Clitellata Reveals Mitogenome Organization Can Affect The Mode Of Phylogeny, Deni̇z Mercan, Austin Horenkamp, Merve Nur Aydemi̇r, Habeş Bi̇lal Aydemi̇r, Kurt Neubig, Nai̇me Arslan, Frank E. Anderson

Turkish Journal of Zoology

Clitellata is a major clade of Annelida that includes almost all freshwater and terrestrial annelids as well as many marine species. Aquatic oligochaetes include the union of the two multispecies families: Naididae and Tubificidae. There has been much debate regarding the phylogeny and classification of the cosmopolitan and diverse Naididae. In this study, the total mitogenome sequences of Potamothrix hammoniensis (Naididae: Tubificinae), Stylaria fossularis, Stylaria lacustris, Chaetogaster diaphanus, Chaetogaster diaphanus sp. B, and Slavina appendiculata (Naididae: Naidinae) were sequenced and characterized and can be accessed from NCBI under accession numbers OQ654101, PP909790, PP909791, PP909792, PP909793, and PP893275, respectively. For comparative …

Nitrate And Nitrite Levels In Cattle Feed, Drinking Water, Rumen Content, And Blood Methemoglobin Levels In Burdur Province Of Türkiye, Reyda Kiyici, Hasan Altan Akkan, Mehmet Karaca, Esra Zeybek, Bayram Kudret Karaayvaz, Fi̇rdevs Mor Savaş, Yahya Öztürk, Asim Kart, Ramazan Yildiz, Murat Bayezi̇t

Turkish Journal of Veterinary & Animal Sciences

This study was conducted to determine the risk factors associated with nitrate/nitrite poisoning in cattle in the Burdur region. Feed and water samples were collected from 10 different farms randomly selected from 9 districts. A total of 33 feed samples, 13 water samples, 21 rumen contents, and 20 blood samples were collected for analysis. Nitrate and nitrite levels in feed, drinking water, and rumen fluid, as well as methemoglobin levels in blood samples, were determined using a spectrophotometric method. The average nitrate and nitrite levels in feed samples were 3.06 mg/kg and 3.54 mg/kg, respectively. The mean nitrate and nitrite …

Discrimination Of Sprat Species (Clupeonella Spp.) In The Caspian Sea And The Sea Of Marmara Using Otolith Shape Analysis, Mohammad Reza Shariati, Mohammad Sadegh Alavi-Yeganeh, Mehdi Ghanbarifardi, Gülşah Saç, Müfi̇t Özuluğ, Erdoğan Çi̇çek

Turkish Journal of Zoology

This study evaluates the discriminating power of sagittal otolith shape among three species of the genus Clupeonella endemic to the Caspian Sea (Clupeonella grimmi, Clupeonella caspia, and Clupeonella engrauliformis) and one species from the Sea of Marmara (Clupeonella Cultriventris). Identification of these species is challenging due to their morphological similarities, and the taxonomic validity of C. caspia and C. cultriventris remains ambiguous because of their resemblance. Scanning electron microscope (SEM) images were utilized to examine the morphological characteristics of otoliths. Stereomicroscope images were used to calculate six shape indices: rectangularity, roundness, ellipticity, circularity, aspect ratio, and form factor. The outline …

Assessment Of Pyriproxyfen 0.5% (Juvenile Hormone Analog) Against Mosquito (Diptera: Culicidae) Larvae: A Multiscale Study From Laboratory To Field, Neetu Kachhwaha, Vinod Kumari, Rajbala Verma, Nirmala Sharma, Asif Khan, Mohit Singh, Sanyam Nimoria, Priyadarshini Sharma

Turkish Journal of Zoology

Vector control strategies increasingly focus on nonconventional chemicals with high insecticidal efficacy, persistence, and low toxicity to nontarget organisms. The present multiphase study, conducted in laboratory, semifield, and field conditions in Jaipur, Rajasthan, India, evaluated the efficacy of pyriproxyfen (0.5%) (juvenile hormone analog) in controlling mosquito emergence. Laboratory bioassays demonstrated significant susceptibility of Culex tritaeniorhynchus Giles, 1901 (Diptera: Culicidae) larvae, with the first and second instars exhibiting 100% mortality at 1 ppm and third and fourth instars showing emergence inhibition (IE) of 86.11% and 65.28%, respectively. Probit analysis determined lower LC₅₀, LC₉₀, and LC₉₉.₉ values for the first instar larvae …

Distribution Pattern And Abundance Dynamics Of Asian Openbill (Anastomus Oscitans) In Rice Field Throughout Peninsular Malaysia, Badrulhadza Amzah, Rosli Ramli, Noorhidayah Mamat

Turkish Journal of Zoology

The Asian Openbill (Anastomus oscitans) plays a crucial role in rice field ecosystems by preying on invasive apple snails (Pomacea spp.), potentially reducing the reliance on chemical molluscicides. This study investigated the distribution and abundance dynamics of the stork across major rice granaries in Peninsular Malaysia. Surveys were conducted at 111 sampling points within 30 localities across 11 states during five consecutive rice seasons (2022–2024), with bird counts obtained through binoculars and digital photography. Results indicate that storks are highly concentrated on the northern and central west coasts, where rice fields provide abundant foraging opportunities. In the northern regions (Perlis, …