Yazar "Turan, C." seçeneğine göre listele

Listeleniyor 1 - 16 / 16
  • Küçük Resim
    Öğe
    Age and growth of the Randall's threadfin bream Nemipterus randalli (Russell, 1986), a recent Lessepsian migrant in Iskenderun Bay, northeastern Mediterranean
    (Wiley, 2010) Erguden, D.; Turan, C.; Gurlek, M.; Yaglioglu, D.; Gungor, M.
    P>Randall's threadfin bream, Nemipterus randalli, first recorded in Iskenderun Bay in Turkey in 2008, seems to have increased in the region. The species, widespread in the western Indian Ocean and with a rapid expansion, appears to have migrated to the bay via the Red Sea. Although its presence in the region has been published, there has been little or no information as to age and growth parameters of this Lessepsian migrant in its new habitat. The present study aims to determine the basic age and growth parameters of the species colonized in the region. A total of 379 collected individuals were studied from November 2007 to October 2008. Total specimen lengths ranged from 4.80 to 21.50 cm, and weights from 1.10 to 138.36 g. Maximum age was 3 years for both sexes. The length-weight relationship was described as W = 0.0011 x L3.061 (r2 = 0.982). The von Bertalanffy growth parameters were: L-infinity = 34.96 cm; K = 0.214 year-1; t(0) = -1.244 year for the entire population. These data were compared with results from studies made in other geographic areas.
  • Küçük Resim
    Öğe
    Bioactive Compounds and Antimicrobial Activity of Glasswort Salicornia europaea
    (Indian Pharmaceutical Assoc, 2021) Karan, S.; Turan, C.; Sangun, M. K.; Eliuz, E. A. E.
    This study aims to determine the chemical and physical composition and antibacterial activity of glasswort. Soxhlet extraction of Salicornia europaea was performed using Hexane and analyzed by Gas chromatography-mass spectrometry. Alpha-tocopherol content was analysed by using Liquid chromatography with tandem mass spectrometry. The elemental analysis was investigated by inductively coupled plasma mass spectrometry. The crystallographic texture and composition of powder samples were determined by X-ray diffraction. The Minimum Inhibition Concentrations and inhibition zones extracts of Salicornia europaea were performed by spectrophotometric broth microdilution and disc diffusion methods, respectively, against 4 bacteria (Escherichia coli, Klebsiella pneumonia, Bacillus subtilis, Staphylococcus aureus) and 2 fungi (Candida albicans, Candida parapsilosis). Alpha-tocopherol quantity and oil content of Salicornia europaea were found to be 2.1 +/- 0.3mg/100 g and 15.15 %, respectively. The detected minerals were also found as Sodium 447, Magnesium 51.98, K 45.86, Ca 14.27 ppm. The highest minimum inhibition concentration was 0.9 mg/ml against Escherichia coli in methanol extract (p.0.05). The highest mean inhibition zones diameter was 3.8 mm for methanol extracts against Bacillus subtilis (p.0.05). As a result, the extract and oil of Salicornia europaea can be used as potential bioactive and antimicrobial agents for pharmaceutical and cosmetics applications.
  • Küçük Resim
    Öğe
    First record of the blue-barred parrotfish, Scarus ghobban Forsskal, 1775 from Turkish coastal waters
    (Hindawi Ltd, 2014) Turan, C.; Erguden, D.; Gurlek, M.; Yaglioglu, D.; Uygur, N.
    [Abstract Not Available]
  • Küçük Resim
    Öğe
    First record of the broad-banded cardinal fish Apogon fasciatus (White, 1790) from Turkey
    (Natl Centre Marine Research, 2010) Turan, C.; Yaglioglu, D.; Erguden, D.; Gurlek, M.; Sonmez, B.
    Two specimens of the alien cardinal fish Apogon fasciatus (White, 1790) are recorded for the first time in Turkey and second time in the Mediterranean Sea. This is the fourth Indo-Pacific apogonid species documented in the Mediterranean Sea, and the introduction of this species to the eastern Mediterranean is due to migration from the Red Sea via the Suez Canal.
  • Küçük Resim
    Öğe
    First record of the Indian Ocean anchovy Stolephorus insularis Hardenberg, 1933 from the northeastern Mediterranean coast of Turkey
    (Wiley, 2014) Dalyan, C.; Yemisken, E.; Erguden, D.; Turan, C.; Eryilmaz, L.
    [Abstract Not Available]
  • Küçük Resim
    Öğe
    First record of the Spiny blaasop Tylerius spinosissimus (Regan, 1908) (Tetraodontidae) from the Turkish coasts
    (Natl Centre Marine Research, 2011) Turan, C.; Yaglioglu, D.
    The non-indigenous tetraodontid of Indo-Pacific origin Tylerius spinosissimus is recorded for the first time in Turkish waters and for the third time in the Mediterranean Sea. This record increases to 53 the number of Indo-Pacific alien fish species present along the coasts of Turkey.
  • Küçük Resim
    Öğe
    Genetic differentiation of Mediterranean horse mackerel (Trachurus mediterraneus) populations as revealed by mtDNA PCR-RFLP analysis
    (Wiley, 2009) Turan, C.; Gurlek, M.; Yaglioglu, D.; Ozturk, B.
    The genetic population structure of Mediterranean horse mackerel, Trachurus mediterraneus, from seven locations throughout the Black, Marmara, Aegean and eastern Mediterranean seas was investigated using restriction fragment length polymorphism (RFLP) analysis of the mtDNA 16S rDNA region. An approximately 2000-bp segment was screened in 280 individuals using six restriction enzymes, resulting in 10 composite haplotypes. The most common haplotype was present in 56.42% individuals; the next most frequent haplotype was present in 22.85% individuals. Average haplotype diversity within samples was moderate (0.38), and nucleotide diversity was low (0.00435). Mean nucleotide divergence for the seven sampling sites was 0.0028. Nucleotide divergence among samples was moderate, with the highest value detected between the Aegean Sea (Izmir) and the eastern Black Sea (Trabzon) populations (0.007055), and the lowest (-0.000043) between the Marmara Sea (Adalar) and the western Black Sea (Sile) populations. In Monte Carlo pairwise comparisons of haplotype frequencies, the Sinop from the middle Black Sea, Trabzon from the eastern Black Sea, and Iskenderun Bay from the north-eastern Mediterranean Sea exhibited highly significant (P < 0.001) geographical differentiation from each other and from all other populations. Mantel's test indicated that the nucleotide divergence among populations of T. mediterraneus was not significantly associated with their geographical isolation (r = -0.2963; P > 0.05). Consequently, the mtDNA 16S rDNA region provided evidence for the existence of three distinct T. mediterraneus populations (Sinop, Trabzon and Iskenderun Bay) in the Black and north-eastern Mediterranean seas.
  • Küçük Resim
    Öğe
    Length-weight and length-length relationships for four shad species along the western Black Sea coast of Turkey
    (Wiley-Blackwell, 2011) Erguden, D.; Turan, F.; Turan, C.
    P>This study investigates length-weight and length-length relationships of four shad species (Alosa caspia caspia, Alosa immaculata, Alosa maeotica, Alosa tanaica) captured in the western Black Sea coast of Turkey. A total of 686 specimens, 355 females and 331 males, were caught by gill net, trammel net and longline from 2006 through 2007 along the western Black Sea coast of Turkey. The relationships of total length (TL), fork length (FL) and standard length (SL) are presented for inhabiting in the Black Sea four shad species and the relationships between total length (TL) and body weight (BW) from the two localities, Sile and Karasu in the western Black Sea coast of Turkey. The Length-weight relationships generally indicated positive allometric growth in Alosa species for both males and females and an isometric growth for A. immaculata females. The coefficient b ranged from a minimum 2.97 for females of A. immaculata to a maximum 3.75 for both sexes A. c. caspia. Results indicated that the length-length relationship between the three length measurements were highly correlated (r2 > 0.99, P < 0.001).
  • Küçük Resim
    Öğe
    Microsatellite DNA analysis of population structure in Atlantic herring (Clupea harengus), with direct comparison to allozyme and mtDNA RFLP analyses
    (Blackwell Publishing Ltd., 1999) Shaw, P.W.; Turan, C.; Wright, J.M.; O'Connell, M.; Carvalho, G.R.
    Previous attempts to test for small-scale stock structuring within Atlantic herring (Clupea harengus L.) with molecular markers have been hampered by uninformative levels of genetic variation. Here we report the first application of microsatellite DNA markers to investigate population subdivision in Atlantic herring from Norwegian waters and the Barents Sea, and also examine microsatellite differentiation between C. harengus and Pacific herring (C. pallasi). Results from four microsatellite loci indicate high, and informative, variation compared to molecular markers used previously: number of alleles per locus = 18-41; mean expected heterozygosity within samples = 0.90-0.93. Significant genetic differences were detected between almost all samples representing postulated Icelandic summer-spawner, Norwegian spring-spawner and Norwegian fjord stocks, using Fisher's exact test, F(ST) and R(ST) values. Levels of allele frequency differentiation between Atlantic and Pacific herring overlapped the range seen among Atlantic herring samples, indicating that microsatellites are poor indicators of the degree of species differentiation. Comparison with allozyme and mitochondrial DNA restriction fragment length polymorphism (RFLP) datasets from the same samples suggests that microsatellites may detect structuring at a finer scale, but are less informative at larger scales of divergence.
  • Küçük Resim
    Öğe
    Occurrence of Schedophilus ovalis (Cuvier, 1833) (Osteichthyes: Centrolophidae) in the North-Eastern Mediterranean, Turkey
    (Wiley, 2013) Erguden, D.; Yaglioglu, D.; Turan, C.
    [Abstract Not Available]
  • Küçük Resim
    Öğe
  • Küçük Resim
    Öğe
    Occurrence of the oilfish, Ruvettus pretiosus Cocco, 1833 (Gempylidae) in Iskenderun Bay, northeastern Mediterranean, Turkey
    (Wiley-Blackwell, 2013) Gurlek, M.; Erguden, D.; Turan, C.
    [Abstract Not Available]
  • Küçük Resim
    Öğe
    On the occurrence of the giant devil ray Mobula mobular (Bonnaterre, 1788) from the Mediterranean coast of Turkey - a by-catch documentation
    (Wiley-Blackwell, 2013) Yaglioglu, D.; Turan, C.; Gurlek, M.
    [Abstract Not Available]
  • Küçük Resim
    Öğe
    Spatial localization of germin-like oxalate oxidase genes in developing wheat shoots
    (2004) Çalişkan, M.; Ozcan, B.; Turan, C.; Cuming, A.C.
    When quiescent embryos in dry grains of ripened wheat are isolated and provided with ample water and oxygen at an appropriate temperature, they begin to grow very rapidly. The onset of the growth is signaled by nascent synthesis of germin genes which encodes a relatively rare, water-soluble homop entameric glycoprotein. Germin is resistant to pepsin digestion under conditions that lead to hydrolysis of virtually all other proteins in wheat embryos. Germin proteins have oxalate oxidase activity, an activity that degrades oxalic acid to generate hydrogen peroxide which involves in many aspects of plant development. Following 48-hour imbibition on water, wheat embryos give rise to distinguishable shoot and roots. Shoots comprise coleoptile, leaf primordium and shoot apex. In the current study, non-radioactively labeled germin riboprobes were prepared by in vitro transcription. The riboprobes were used to search and localize germin mRNAs in sections taken from throughout of shoots. The results revealed that although leaf primordium and shoot apex did not show any signals of the presence of germin mRNAs, coleoptiles as a whole tissue displayed germin gene expression on epidermal cells and vascular bundle sheath cells. Among the sections taken from different parts of shoots, the sections from middle part gave the strongest signals on coleoptile cells. © 2004 Taylor and Francis Group, LLC.
  • Küçük Resim
    Öğe
    The use of otolith shape and chemistry to determine stock structure of Mediterranean horse mackerel Trachurus mediterraneus (Steindachner)
    (Wiley, 2006) Turan, C.
    Otolith shape and chemistry of Mediterranean horse mackerel Trachurus mediterraneus were simultaneously used to assess the feasibility of Using these natural tags to discriminate populations throughout the Black, Marmara, Aegean and eastern Mediterranean Seas. Otolith shape and chemistry analyses showed a similar pattern of differentiation between T mediterraneus stocks, revealing a clear discreteness of the middle Black Sea (Sinop) and Aegean Sea (Izmir) samples. Otolith upper side length and width, and Na, K, Mg and Ba, were the morphological traits and trace elements, respectively, differing most among groups. Overall assignment of individuals into their original sample was high for both otolith shape and chemistry. Highest reclassification rate was observed for the south-middle Black Sea and Aegean Sea samples for both analyses. Hierarchical Cluster analyses also supported high differentiation of the south-middle Black Sea and Aegean Sea samples for both analyses. Mantel's test revealed that the Euclidean distance both for otolith shape (r = -0(.)0917 P > 0(.)05) and chemistry (r = -0-1248, P > 0(.)05) between these Populations were not significantly associated with their geographical distances. (c) 2006 The Author (c) 2006 The Fisheries Society of thc British Isles.
  • Küçük Resim
    Öğe
    Weight-length relationships for 20 Lessepsian fish species caught by bottom trawl on the coast of Iskenderun Bay (NE Mediterranean Sea, Turkey)
    (Wiley, 2009) Erguden, D.; Turan, C.; Gurlek, M.
    Weight-length relationships were estimated for 20 Lessepsian fish species of the Iskenderun Bay, namely, Apogon nigripinnis, Apogon queketti, Callionymus flamentosus, Cynoglossus sinusarabici, Dussumieria elopsoides, Etrumeus teres, Fistularia commersonii, Lagocephalus spadiceus, Lagocephalus suezensis, Leiognathus kluzingeri, Nemipterus japonicus, Oxyurichthys petersenii, Saurida undosquamis, Sillago sihama, Siganus luridus, Siganus rivulatus, Sphyraena chroysotaeina, Stephanolepis diaspros, Upeneus moluccensis and Upeneus pori. All regressions were found to be significant for all species. This study presents the first estimation of weight-length relationships for six species (A. queketti, E. teres,F. commersonii, L. suezensis, Nemipterus randalli, and S. luridus) inhabiting coastal areas of the northeastern Mediterranean Sea.