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    Age and growth of the nakedband gaper, Champsodon nudivittis (Ogilby, 1895), from the Iskenderun Bay, Northeastern Mediterranean
    (Cahiers De Biologie Marine, 2014) Yaglioglu, Deniz; Deniz, Tomris; Erguden, Deniz; Gurlek, Mevlut; Turan, Cemal
    The nakedband gaper Champsodon nudivittis (Ogilby, 1895) was first recorded in 2009 on Turkish coastal waters, and has rapidly increased around this region. C. nudivittis is the first lessepsian immigrant of Champsodontid species in the Turkish coastal waters. The present study aims to determine the age and growth parameters of C. nudivittis colonized in the Iskenderun Bay, North-eastern Mediterranean Sea. A total of 296 collected individuals (seasonally average 74 specimens) were studied from November 2011 to October 2012. Total specimen lengths and weights ranged from 6.00 to 14.40 cm and from 1.4 to 29.3 g respectively. Maximum age was 2 years for both sexes. The length-weight relationship was described as W= 0.0040 x L-3.207 (R-2 = 0.957)5 W= 0.0005 x L-3.158 (R-2 = 0.959) and W= 0.0040 x L-3.196 (R-2 = 0.955). The parameters of von Bertalanffy growth fitted to mean observed total lengths-at-age for each sex separately and estimated as L-infinity= 20.41 cm, K= 0.224 year(-1), t(0)= -2.491 year for females,L-infinity= 21.53 cm, K= 0.199 year(-1), t(0)= -2.154 year for males, and as L-infinity= 21.10 cm, K= 0.210 year(-1), t(0)= -2.639 year for combined sexes.
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    Confirmation of the presence of the Sea Lamprey, Petromyzon marinus Linnaeus, 1758 in the Levantine Sea (Petromyzoniformes: Petromyzonidae)
    (Taylor & Francis Ltd, 2010) Cevik, Cem; Erguden, Deniz; Tekelioglu, Nazmi
    [Abstract Not Available]
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    Elasmobranch bycatch in a bottom trawl fishery in the Iskenderun Bay, northeastern Mediterranean
    (Cahiers De Biologie Marine, 2015) Yaglioglu, Deniz; Deniz, Tomris; Gurlek, Mevlut; Erguden, Deniz; Turan, Cemal
    Total biomass, species composition, depth distribution, seasonal distribution and abundance of elasmobranchs were examined by commercial bottom trawls between 2009 and 2010 from Iskenderun Bay, Turkish coast of the northeastern Mediterranean. From 52 bottom trawl surveys, it was estimated that elasmobranchs represented 23% (190.1 kg.km(-2)) of total fish biomass (840.8 kg.km(-2)) in Iskenderun Bay. Dasyatis pastinaca, Gymnura altavela, Raja clavata and Rhinobatos spp. (Rhinobatos rhinobatos and Glaucostegus cemiculus) showed high occurrence and represented each between 11.10 and 38.46% of the whole elasmobranch biomass. The other species, Dipturus oxyrinchus, Raja miraletus, Torpedo marmorata and Torpedo torpedo, represented each between 0.12 and 2.82% of the total elasmobranchs biomass. Shark species, Mustelus mustelus, Scyliorhinus stellaris, Scyliorhinus canicula, Galeus melastomus and Squatina squatina, represented each between 0.45 and 1.7% of the whole elasmobranchs biomass. When seasonal distribution was examined, total catch of fish were 32.38, 23.24, 10.71 and 33.65%, of which elasmobranchs species constitute 24.11, 34.12, 20.42 and 21.34% in autumn, winter, spring and summer respectively. Single or sporadic captures were also recorded for Isurus oxyrinchus, Carcharhinus plumbeus, Carcharhinus altimus, Oxynotus centrina, Raja radula, Rhinoptera marginata and Pteromylaeus bovinus.
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    FIRST RECORD OF MARBLED STINGRAY, DASYATIS MARMORATA (ELASMOBRANCHII: MYLIOBATIFORMES: DASYATIDAE), ON THE COAST OF TURKEY, NORTH-EASTERN MEDITERRANEAN
    (Wydawnictwo Akad Rolniczej W Szczecinie, 2014) Erguden, Deniz; Turan, Cemal; Gurlek, Mevlut; Uyan, Ali; Reyhaniye, Asil Nadir
    Two specimens of marbled stingray, Dasyatis marmorata (Steindachner, 1892), were captured for the first time on 24-25 October 2013 in the Iskenderun Bay, located in the north-eastern Mediterranean coast of Turkey. This is the first record of D. marmorata in Turkish coastal waters and the seventh dasyatid species reported to date from the area.
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    FIRST RECORD OF SPOTBASE BURRFISH, CYCLICHTHYS SPILOSTYLUS (ACTINOPTERYGII: TETRAODONTIFORMES: DIODONTIDAE), FROM THE MARINE WATERS OF TURKEY
    (Wydawnictwo Akad Rolniczej W Szczecinie, 2012) Erguden, Deniz; Bayhan, Yusuf Kenan; Turan, Cemal
    A single adult specimen of spotbase burrfish, Cyclichthys spilostylus (Leis et Randall, 1982), was recorded for the first time on 26 December 2011 from the Mersin Bay, north-eastern Mediterranean, Turkey. This is the first record of the spotbase burrfish C. spilostylus from the marine waters of Turkey and third record on the continental shelf in the Mediterranean basin. This is the 61th record of an Indo-Pacific alien fish species present along the marine waters of Turkey.
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    FIRST RECORD OF THE INDIAN OCEAN TWOSPOT CARDINALFISH, CHEILODIPTERUS NOVEMSTRIATUS (ACTINOPTERYGII: PERCIFORMES: APOGONIDAE), FROM TURKISH MARINE WATERS
    (Pensoft Publishers, 2015) Turan, Cemal; Erguden, Deniz; Uygur, Necdet; Gurlek, Mevlut; Erdogan, Zeliha A.; Sonmez, Bektas; Uyan, Ali
    Indian Ocean twospot cardinalfish, Cheilodipterus novemstriatus (Ruppell, 1838), is recorded for the first time from the Turkish marine waters. Two specimens of C. novemstriatus were sampled with a purse seiner on 1 December 2014, and also a school of C. novemstriatus was photographed during scuba diving at a depth of 13 m on a rocky surface on 8 December 2014 in the Cevlik coast, Iskenderun Bay, north-eastern Mediterranean of Turkey. With the present report, the number of alien cardinal fish species reported in the Turkish coasts has reached five.
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    Genetic identification and taxonomic relationship of mediterranean mugilid species based on mitochondrial 16s rDNA sequence data
    (2010) Erguden, Deniz; Gurlek, Mevlut; Yaglioglu, Deniz; Turan, Cemal
    This study examines eight mugilid species: Mugil cephalus, Chelon labrosus, Oedalachelis labeo, Liza abu, Liza aurata, Liza saliens and Liza ramada from the Mediterranean Sea and Mugil soiuy Black Sea on the basis 16S rDNA gene of mitochondrial DNA. The 16S rDNA dataset contained 121 variable and parsimony informative sites and the mean nucleotide diversity (Pi) was found to be 0.05. Haplotype diversity was found to be 0.88 and 7 different haplotypes were observed. Species specific haplotypes were detected and only C. labrosus and L. ramada shared the same Haplotype (H3). Sequencing analysis revealed that M. cephalus was clearly separated from the other species. For inter-generic comparisons, there was no genetic difference between C. labrosus andL. ramada and C. labrosus and O. labeo should be considered within the genus Liza. Moreover M. soiuy and L. abu should be considered under the genus Liza, or new genus name should be given for these two species. © Medwell Journals, 2010.
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    Genetic Identification and Taxonomic Relationship of Mediterranean Mugilid Species Based on Mitochondrial 16S rDNA Sequence Data
    (Medwell Online, 2010) Erguden, Deniz; Gurlek, Mevlut; Yaglioglu, Deniz; Turan, Cemal
    This study examines eight mugilid species: Mugil cephalus, Chelon labrosus, Oedalachelis labeo, Liza abu, Liza aurata, Liza saliens and Liza ramada from the Mediterranean Sea and Mugil soiuy Black Sea on the basis 16S rDNA gene of mitochondrial DNA. The 16S rDNA dataset contained 121 variable and parsimony informative sites and the mean nucleotide diversity (Pi) was found to be 0.05. Haplotype diversity was found to be 0.88 and 7 different haplotypes were observed. Species specific haplotypes were detected and only C. labrosus and L. ramada shared the same Haplotype (H-3). Sequencing analysis revealed that M. cephalus was clearly separated from the other species. For inter-generic comparisons, there was no genetic difference between C. labrosus and L. ramada and C. labrosus and O. labeo should be considered within the genus Liza. Moreover M. soiuy and L. abu should be considered under the genus Liza, or new genus name should be given for these two species.
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    Length-weight and length-length relationships of the Mediterranean shad Alosa agone (Scopoli, 1786) from the Northeastern Mediterranean coast of Turkey
    (Academic Journals, 2011) Erguden, Deniz; Turan, Cemal; Gurlek, Mevlut; Turan, Funda; Erguden, Sibel Alagoz
    The relationships between total length (TL), fork length (FL) and standard length (SL), and between TL and weight were investigated for Mediterranenan shad, Alosa agone, from two estuary localities (Karaduvar and Samandag), North-eastern Mediterranean coast of Turkey. A total of 297 specimens, 150 males and 147 females, were captured by gill net and trammel net between September 2006 and May 2007 from the NE Mediterranean Sea coast of Turkey. The values of the exponent b of the length-weight relationships (LWRs) were 3.50 for female and 3.49 for male. The length-length relationship (LLRs) between the three length measurements (TL-FL-SL) were highly correlated (r(2)>0.99, P<0.001). This study presented the first reference on LWRs and LLRs for Mediterranean shad species from NE Mediterranean coast of Turkey.
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    Morphologic divergence and systematic relationship of copepod in Turkish freshwater
    (Universitatea din Oradea, 2015) Bozkurt, Ahmet; Turan, Cemal; Erguden, Deniz
    The pattern of taxonomic relationship and morphological divergence of three copepod species Thermocyclops crassus, T. dybowskii and T. vermifer collected from three different localities in Mediterranean region of Turkey were investigated. A multivariate ANOVA using morphometric characters revealed highly significant intersample variation for most of the characters between species. In discriminant function analyses, the first discriminant function accounted for 65% and the second accounted for 35% of the between-group variability, showing clear between-species differentiation. Component loadings of discriminating variables showed that thorax segments of cephalothorax played an important role to discriminate Thermocyclops species. The Neighbour-joining analysis produced two main clustering, T. vermifer was closest taxa to T. dybowskii being the sister group to the T. crassus which was the most divergent in this group. In the correct assignment of individuals into their original sample, the proportion of correctly classified T. crassus to their original group was highest (100%), showing a clear separation from the other species. © Biharean Biologist, Oradea, Romania, 2015.
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    Morphologic structuring between populations of chub mackerel Scomber japonicus in the Black, Marmara, Aegean, and northeastern Mediterranean Seas
    (Springer Japan Kk, 2009) Erguden, Deniz; Ozturk, Bayram; Erdogan, Zeliha Aka; Turan, Cemal
    Morphometric and meristic analyses of chub mackerel Scomber japonicus were used to discriminate stocks throughout the Black, Marmara, Aegean, and northeastern Mediterranean Seas. Morphometric and meristic analyses showed a similar pattern of differentiation between S. japonicus stocks and revealed a clear discreteness of two groups, northeastern Mediterranean (Antalya Bay-Iskenderun Bay) and the northern group, including the Aegean, Marmara, and Black Seas. Univariate analysis of variance showed significant differences between means of the samples for most morphometric and meristic descriptors. The contribution of each variable in distinguishing between the stocks for the first discriminant function revealed high contribution from head size measurements for morphometrics, and first and second dorsal fin rays for meristics. Plotting all specimens on the first two discriminant functions accounted for 76% of total variance for morphometric and 69% of total variance for meristic analyses, and both plots resulted in two main groupings. The overall random assignment of individuals to their original group was higher in morphometric than in meristic analysis.
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    Occurrence of fangtooth moray Enchelycore anatina (Lowe, 1839) (Muraenidae) in Iskenderun Bay, Eastern Mediterranean, Turkey
    (2013) Erguden, Deniz; Gurlek, Mevlüt; Uygur, Necdet; Turan, Cemal
    Abstract. During scuba diving, one specimen of the fangtooth moray Enchelycore anatina (Lowe, 1839) was seen and photographed in the area of the eastern Mediterranean Sea coast of Turkey on 21 July 2011. This record is the new locality for the fangtooth moray E. anatina from the Iskenderun Bay (Eastern Mediterranean). ©Biharean Biologist, Oradea, Romania, 2013.
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    A second observation of Dendrodoris fumata (Ruppell & Leuckart, 1830) from the Mediterranean Sea (Nudibranchia: Dendrodorididae)
    (Max Kasparek Verlag, 2012) Cevik, Cem; Cavas, Levent; Erguden, Deniz; Turan, Cemal
    [Abstract Not Available]
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    Systematics of Scorpaeniformes Species in the Mediterranean Sea Inferred from Mitochondrial 16S rDNA Sequence and Morphological Data
    (Polish Acad Sciences, Inst Systematics Evolution Animals, 2009) Turan, Cemal; Gunduz, Islam; Gurlek, Mevluet; Yaglioglu, Deniz; Erguden, Deniz
    Genetic and morphological divergence and phylogenetic relationships of Scorpaeniformes fish including two genera and six species, Helicolenus dactylopterus, Scorpaena maderensis, Scorpaena porcus, Scorpaena elongata, Scorpaena scrofa, Scorpaena notata, living in the Mediterranean Sea, were investigated with morphological and mitochondrial 16S rDNA sequence data. The mean nucleotide diversity was found to be 0.0792. Average Sequence divergence between species of Sebastidae and Scorpaenidae was 8.4%, and 6.4%. between species of the genus Scorpaena, For congeneric comparisions, the lowest genetic divergence (0.7%) was observed between S. porcus and S. notata, and the highest divergence (10.8%) was detected between S. maderensis and S. notata. High levels of nucleotide divergence were detected between species of two families, and the maximum value was found to be 14.5% between H. dactylopterus and S. elongata. The two phylogenetic methods (NJ and MP) identified two major lineages. In the NJ tree S. elongata was the sister group to S. scrofa. S. maderensis was more divergent from these groups. Another lineage contained S. porcus and S. notata. The topology of the MP tree is similar to that of the NJ tree. The pattern and degree of morphological differentiation was not congruent with the genetic differentiation. The Euclidiean distances of morphological data revealed very high morphological divergence between the two families. The highest morphological divergence was observed between H. dactylopterus and S. porcus, and the lowest was detected between S. elongata and S. notata. The present genetic and morphological data support the present monophyletic status of the Scorpaena genus.