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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.
Dietary red clover (Trifolium pratense) on growth performance of common carp (Cyprinus carpio)
(Medwell Online, 2007) Turan, Funda; Gurlek, Mevlut; Yaglioglu, Deniz
The effects of dietary red clover on growth and body composition were investigated in common carp Cyprinus carpio. The fish (mean body weight 2.01 +/- 0.03 g) were fed with diets supplemented with three concentrations (50, 100 and 200 mg kg(-1)) of red clover and a control diet without red clover, for 12 weeks. The fish fed with diet supplemented with 100 mg kg(-1) red clover exhibited significantly higher growth rates than fish fed with diets supplemented with 50 and 200 mg kg(-1) red clover (p<0.001). The highest values of specific growth rate and food conversion ratio were 2.35 +/- 0.07 and 1.23 +/- 0.01, respectively at 100 mg kg(-1) red clover diet group. Protein efficiency ratio and apparent net protein utilization were significantly higher in 100 mg kg(-1) red clover group than that with other groups (p<0.001). However, significant differences were not observed in carcass moisture and proximate protein, lipid and ash contents among the all diet groups (p>0.05). Survival rate was higher (88%) in all dietary groups. The findings of the present study suggest that 100 mg kg(-1) red clover inclusion improves growth rate, feed utilization and survival of common carp.
Effects of dietary androstenedione concentration on growth of Tilapia fry (Oreochromis aureus linnaeus)
(Soc Israeli Aquaculture & Marine Biotechnology, 2007) Turan, Funda; Gurlek, Mevlut; Turan, Cemal
The effects of androstenedione on the growth, body composition, and survival of tilapia (Oreochromis aureus) fry were examined. Diets were supplemented by one of three androstenedione concentrations (50, 100, or 200 mg/kg) for twelve weeks. The growth rate significantly increased in fish fed 50 mg androstenedione per kg compared to the control (p<0.01) but decreased dramatically at concentrations beyond 50 mg/kg. The specific growth rate, protein efficiency ratio, and food conversion ratio were significantly better in the 50 mg/kg group than in the other groups. Crude protein and survival at all androstenedione levels did not significantly differ from those of the control but lipid content dropped with 100 mg/kg supplementation.
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.
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.
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.
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.
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.
Genetic variation of Atlantic horse mackerel (Trachurus trachurus) in the Turkish waters
(Cahiers De Biologie Marine, 2009) Turan, Cemal; Ozturk, Bayram; Caliskan, Mahmut; Duzgunes, Ertug; Gurlek, Mevlut; Yaglioglu, Deniz; Hazar, Durul
Geographic variations of Truchurus trachurus based on mitochondrial 16S rDNA gene from 8 locations, including the Black, Marmara, Aegean and north-eastern Mediterranean Seas, were investigated. Restriction fragment length polymorphism (RFLP) analyses revealed 14 different composite haplotypes for 307 individuals and diagnostic restriction sites for discriminating among populations. The distribution of haplotypic groups mostly followed the geographic origin of populations. Average haplotype diversity within populations was high (0.7311), and nucleotide diversity was low (0.0071). Mean nucleotide divergence among samples of T. trachurus was 0.00271. The highest value of pairwise inter-group nucleotide divergence was detected between the West and East Black Sea samples (0.01119), and the lowest (-0.00018) between the two North-eastern Mediterranean samples. In Monte Carlo pairwise comparisons of haplotype frequencies genetically different populations were detected. The distribution of haplotypes and the pairwise estimate of nucleotide divergence exposed high differentiation of the Black Sea (BS2) population with respect to the others. Mantel's test showed that the genetic distances between these Populations were not associated with their geographical distances (r = 0.326; P > 0.05).
Larval rearing of african catfish (Clarias gariepinus) using european pine sawfly (Neodiprion sertifer) larvae as direct food
(Ege Univ, 2006) Genc, M. Ayce; Turan, Funda; Akyurt, Ihsan; Gokcek, Kaya; Demirci, Aydin; Gurlek, Mevlut
The objective of this study was to compare the effects of different alternative (locally available) diets and their combination on growth of African catfish, Clarias gariepinus larvae. Fish larvae (mean weigth 2.70 +/- 0.08 mg, mean lenght 0.75 +/- 0.05 mm and 2 days old) were fed one of five diets containing commercial trout starter diet (TY as control diet), tubifex, European pine sawfly (Neodiprion sertifer: CAT) larvae, tubifex plus TY and CAT plus TY for 18 days. Growth was nearly similar in TY, Tubifex and CAT + TY groups and typically, retardation was detected especially in CAT group. On day 6, 10, 14 and 18 mean weight of the larvae varied significantly (p > 0.05) between the treatments. The results of this feeding trial showed that, the tubifex supplementation was (improve the efficiency of dry diet, TY) significantly improve the growth and survival rates (p < 0.05) and it is advisable than the other diets of this experiment.
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.
Morphologic identification of tilapia (Chiclidae) species found in Cukurova And Hatay Regions
(Ege Univ, 2006) Gurlek, Mevlut; Turan, Cemal
In this study, four species of Tilapia Oreochromis aureus, O. niloticus, Tilapla zillii and T. rendalli were collected from distributional range comprising lakes, rivers and Aquaculture research centers in Cukurova and Hatay regions. Morphometric and meristic characters were used for morphologic identification. Discriminant fuction anaiysis of morphometric characters revealed clear morphometric discreteness of Cukurova University (CU) O. aureus sample, and other specieas were overlapped together. In meristic characters, species and populations were clearly separated from each other. However T. rendalli, O. niloticus and O. auratus from CU samples were overlapped together and showed no meristic differences. Principal component anaiysis revealed that giil rakers and anal fin rays were important key characters to discriminate species.
Population structure analysis of Red Barracuda, Sphyraena Pinguis (Perciformes, Sphyraenidae) in the North-Eastern Mediterranean sea using morphometric and meristic characters
(Parlar Scientific Publications, 2015) Yaglioglu, Deniz; Turan, Cemal; Gurlek, Mevlut
Population structure of red barracuda, Sphyraena pin-guis, in north-eastern Mediterranean waters was investigated using morphometric and meristic characters. In discriminant function analysis, first, second and third discriminant functions explained 48.6%, 30.2% and 21.2% of the between-group variation respectively. Plotting first and second discriminant functions explained 81.1% of the between-group variation, and revealed the existence of four morphologically distinct populations of S. pinguis in the north-eastern Mediterranean coastal waters. A correct classification of individuals into their original population was ranged from 93.3% to 96.7%, and the overall random assignment was high (96.7%). The proportion of correctly classified individuals into their original group was the same and greatest (96.7%) for the Iskenderun Bay and Syrian samples. In hierarchical cluster analysis, the Mersin Bay sample was clustered as the first clade, while the Iskenderun Bay and Syrian samples were in the neighbouring clades, and the Antalya Bay sample was clustered as the most divergent. Examination of the contribution of each morphometric and meristic character to the first and second principal components revealed that the observed differences were mainly from the characters associated on head length and eye diameter, indicating that these characters are important in the detected differentiation of the populations.
POPULATION STRUCTURE ANALYSIS OF RED BARRACUDA, SPHYRAENA PINGUIS (PERCIFORMES, SPHYRAENIDAE) IN THE NORTH-EASTERN MEDITERRANEAN SEA USING MORPHOMETRIC AND MERISTIC CHARACTERS
(Parlar Scientific Publications (P S P), 2015) Yaglioglu, Deniz; Turan, Cemal; Gurlek, Mevlut
Population structure of red barracuda, Sphyraena pinguis, in north-eastern Mediterranean waters was investigated using morphometric and meristic characters. In discriminant function analysis, first, second and third discriminant functions explained 48.6%, 30.2% and 21.2% of the between-group variation respectively. Plotting first and second discriminant functions explained 81.1% of the between-group variation, and revealed the existence of four morphologically distinct populations of S. pinguis in the north-eastern Mediterranean coastal waters. A correct classification of individuals into their original population was ranged from 93.3% to 96.7%, and the overall random assignment was high (96.7%). The proportion of correctly classified individuals into their original group was the same and greatest (96.7%) for the Iskenderun Bay and Syrian samples. In hierarchical cluster analysis, the Mersin Bay sample was clustered as the first clade, while the Iskenderun Bay and Syrian samples were in the neighbouring clades, and the Antalya Bay sample was clustered as the most divergent. Examination of the contribution of each morphometric and meristic character to the first and second principal components revealed that the observed differences were mainly from the characters associated on head length and eye diameter, indicating that these characters are important in the detected differentiation of the populations.

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