Yazar "Turan, Cemal" seçeneğine göre listele

Listeleniyor 1 - 6 / 6
  • [ X ]
    Öğe
    Comparison of the physical properties of two Green Turtle (Chelonia mydas) nesting beaches (Akyatan and Samandag) in the eastern Mediterranean (Reptilia: Cheloniidae)
    (Taylor & Francis Ltd, 2013) Sonmez, Bektas; Turan, Cemal; Yalçın Özdilek, Şükran
    The physical properities of sea turtle nesting beaches may strongly influence embryo development and hence conservation planning. In this study, we compared the characteristics of two nesting beaches of Green Turtles, Chelonia mydas, at Akyatan and Samandag in southern Turkey. A total of 48 sand samples from 48 nests was examined and compared in respect to moisture content (M), temperature (TT), electrical conductivity (EC), salinity (S), total dissolved solution (TDS), pH, air ratio (AR), sand grain size together with distance from sea (DFS), depth (ND), incubation period (ID) and hatching success. Significant differences between the two areas were found in nest chamber moisture, conductivity, salinity, total dissolved solution and sand grain size. In a principal component analysis (PCA), the first component explained 45.1% of the variability and was dominated by the effects of the TDS, EC, S, pH and M. The second component explained 24.2 % of the variation and was dominated by the contributions of the TT, ID and ND. This is evidence that moisture plays a more important role than thermal properties in differentiating between the two beaches.
  • Küçük Resim
    Öğe
    Genetic Confirmation of the Striped Eel Catfish Plotosus lineatus (Thunberg, 1787) from Iskenderun Bay (Eastern Mediterranean, Türkiye)
    (Çanakkale Onsekiz Mart Üniversitesi, 2024) Turan, Cemal; Ergenler, Ayşegül; Turan, Funda; Doğdu, Servet Ahmet
    The records of the striper eel catfish Plotosus lineatus have been assigned based on morphological characters in the Mediterranean Sea. However, molecular and genetic analyses are needed to confirm the morphological taxonomic determination and avoid misidentification. In this study, the mitochondrial cytochrome c oxidase subunit I (COI) gene region was used for genetic confirmation of Plotosus lineatus in the Mediterranean Sea. The obtained P. lineatus sequences were found to have a 100% identity match with the Red Sea and Mediterranean records. The present molecular genetic study confirms the presence of P. lineatus in Turkish marine waters. Also, this study is the first genetic confirmation of P. lineatus on the coast of Türkiye and in the Mediterranean Sea.
  • Küçük Resim
    Öğe
    Length-Weight Relationships of Fistularia commersonii Rüppell 1835 from the Northeastern Mediterranean Sea, Türkiye
    (Çanakkale Onsekiz Mart Üniversitesi, 2022) Ergüden, Deniz; Gürlek, Mevlüt; Turan, Cemal
    In this study, the length-weight data for bluespotted cornetfish, Fistularia commersonii in the Iskenderun Bay (NE Mediterranean Sea, Türkiye) was reported. F. commersonii specimens were caught from Iskenderun Bay between September 2018 and March 2019. The total length and total weight of both sexes varied from 23.0-108.1 cm and 4.0-599.58 g. The length-weight relationship was determined as W= 0.0005xL2.963 (R2= 0.969) with negative allometric growth for both sexes. The values of the exponent b of the length-weight relationships (LWRs) were 2.993 for females and 2.925 for males. This present study provides the first comprehensive gender-based description of the length-weight relationships of F. commersonii from the northeastern Mediterranean Sea, Türkiye
  • Küçük Resim
    Öğe
    Range Extension of Priacanthus sagittarius Starnes, 1988 Southeastern Mediterranean Coast of Turkey
    (Çanakkale Onsekiz Mart Üniversitesi, 2021) Gürlek, Mevlüt; Ergüden, Deniz; Turan, Cemal
    A single specimen of Priacanthus sagittarius Starnes, 1988 has been captured in the Iskenderun Bay (Konacık, Turkey), at a depth of 80 m in February 2021. This species represents the second record from Turkish waters and the first record from southeastern Mediterranean coast of Turkey. Besides, this species is the fifth successive record from the. The presence of P. sagittarius in the Mediterranean coast of Turkey is evidently due to migration from the Red Sea through the Suez Canal. On the other hand, available records show that this species is gradually expanding its distribution in the Mediterranean.
  • [ X ]
    Öğe
    The effect of relocation on the morphology of Green Turtle, Chelonia mydas (Linnaeus, 1758), hatchlings on Samandag beach, Turkey (Reptilia: Cheloniidae)
    (Taylor & Francis Ltd, 2011) Sonmez, Bektas; Turan, Cemal; Yalçın Özdilek, Şükran
    We studied the impact of nest relocation in Green Turtles, Chelonia mydas (Linnaeus, 1758), on hatchling morphology at Samandag, Turkey, and examined 350 hatchlings taken equally from both natural nests and relocated nests. The nuchal, vertebral and costal series were the most variable and the supracaudal scutes were almost stable for the hatchlings in both groups. There were significant differences in all sets of nuchal, costal and marginal except vertebral seines between hatchlings from natural and relocated nests. Hatchlings from relocated nests also had a smaller straight carapace width and lower weight than hatchlings from natural nests. Furthermore, hatchlings from relocated nests had smaller left and right fore limb lengths than hatchlings from natural nests. There were significant differences between both nests in incubation duration and moisture content. Relocation thus has a negative effect on hatchling morphology and consequently on the fitness of hatchlings. The smaller size of hatchlings (with scute variations) results in reduced fitness. In spite of the relocation of nests being an important protection technique, it has a negative effect on the morphology and probably on the viability of hatchlings.
  • [ X ]
    Öğe
    The effect of relocation on the morphology of green turtle, chelonia mydas (linnaeus, 1758), hatchlings on samandağ beach, turkey: (Reptilia: Cheloniidae)
    (2011) Sönmez, Bektaç; Turan, Cemal; Yalçın Özdilek, Şükran
    We studied the impact of nest relocation in Green Turtles, Chelonia mydas (Linnaeus, 1758), on hatchling morphology at Samandağ, Turkey, and examined 350 hatchlings taken equally from both natural nests and relocated nests. The nuchal, vertebral and costal series were the most variable and the supracaudal scutes were almost stable for the hatchlings in both groups. There were significant differences in all sets of nuchal, costal and marginal except vertebral scutes between hatchlings from natural and relocated nests. Hatchlings from relocated nests also had a smaller straight carapace width and lower weight than hatchlings from natural nests. Furthermore, hatchlings from relocated nests had smaller left and right fore limb lengths than hatchlings from natural nests. There were significant differences between both nests in incubation duration and moisture content. Relocation thus has a negative effect on hatchling morphology and consequently on the fitness of hatchlings. The smaller size of hatchlings (with scute variations) results in reduced fitness. In spite of the relocation of nests being an important protection technique, it has a negative effect on the morphology and probably on the viability of hatchlings. © Kasparek Verlag, Heidelberg.