Sürdürülebilir Kalkınma Amaçları
Yayınlar
- MakaleAçık Erişim2026Scopus SJRQ3Changes in common carp (Cyprinus carpio) sperm quality and membrane lipid composition related to cryopreservation by Tribulus terrestris; [Alterações na qualidade do esperma e na composição lipídica da membrana da carpa comum (Cyprinus carpio) relacionadas à criopreservação por Tribulus terrestris]
Ölçülü, Abdullatif; Özçiçek, Esin; Kocabaş, Filiz Kutluyer; Kocabaş, Mehmet; Kızak, Volkan; Yilmaz, Ökkeş
Docosahexaenoic acid (DHA) was the major polyunsaturated fatty acid (PUFA) in the sperm plasma membrane, and the levels of PUFAs decreased in treated groups during the cryopreservation process. The supplementation of TT (Tribulus terrestris) to Cyprinus carpio sperm at 200 µg∙L-1 positively affected the maintenance of motility parameters and FAs levels after the freeze-thaw cycle, and TT can be used as an herbal medicine instead of synthetic pharmaceuticals to improve the productive performance in aquaculture.
- MakaleAçık Erişim2026Scopus SJRQ2Relative Efficiencies of Live, Dry and Mixed Food Diets for Larval Rearing of Tigris Scraper (Capoeta umbla) and the Influence of Stocking Density on Fry Growth Characteristics
Gün, Abdulselam; Kızak, Volkan; Gündüz, Fatih
In this research, larval growth features by applying different diets and growth characteristics of fry at different stocking densities were studied under controlled conditions for the Tigris scraper (Capoeta umbla). In the first experiment, the growth and survival rates of Tigris scraper postlarvae were evaluated under three different diet regimes over 21 days. The highest mean total length was 24.04±0.27 mm in the group L1 fed solely Artemia nauplii, and the lowest mean total length was 17.89±0.16 mm in the group L2 fed only dry feed. The highest mean specific growth rate was in the L1, and the lowest mean specific growth rate was in the L2. In the second experiment in which the growth characteristics of fry were investigated at different stocking densities for 98 days, the highest mean live weight was found in S1 with 2.819±0.157 g and the lowest mean live weight was determined as 0.859±0.073 g in S5. The highest mean specific growth rate was in S1, while the lowest rate was in S5. High stocking densities were found to be disadvantageous for growth of C. umbla fry. The findings suggest that successful rearing of Tigris scraper postlarvae and fry is feasible under controlled conditions.
- MakaleAçık Erişim2025Scopus SJRQ1Effect of Ferula sp. on sperm cryotolerance, quality, and fatty acid composition in common carp (Cyprinus carpio)
Ölçülü, Abdullatif; Özçiçek, Esin; Kutluyer Kocabaş, Filiz; Kızak, Volkan; Kocabaş, Mehmet; Yılmaz, Ökkeş
Ferula sp. is a perennial herbaceous plant and is used in traditional medicine owing to their antimicrobial, antiviral, aphrodisiac and spermatogenic activities in the world. Hence, Ferula sp. was used in the present study for cryopreservation protocol as a herbal supplement. The impact of different concentrations [0 mM (Control), 30 µg L−1, 60 µg L−1, 90 µg L−1] of Ferula sp. extract on the quality and fatty acid (FAs) composition was assessed in fresh and cryopreserved sperm of Cyprinus carpio. Optimal supplementation of Ferula sp. at a concentration of 60 µg L−1 in the freezing extender significantly improved post-thawed sperm quality of C. carpio. Sperm motility parameters were assessed using the sperm class analyzer system. The fatty acid (FAs) content in sperm was analyzed using gas chromatography. The results revealed that the increases in motility rate (80.0 ± 3.54%) at 60 µg L−1 were increased significantly (p < 0.05). Significant differences in sperm parameters [(VCL: curvilinear velocity, VSL: straight line velocity, VAP: average path velocity, and BCF: beat cross frequency)] were observed between the different treatments (p < 0.05). The Monounsaturated fatty acids (MUFAs) showed a slight increase in comparison to fresh spermatozoa during cryopreservation. DHA (Docosahexaenoic acid), LA (Linoleic acid) and ARA (Arachidonic acid) were identified as the major PUFAs (polyunsaturated fatty acid) in the sperm plasma membrane, and however the total PUFAs reduced all treated compared to fresh sperm samples after post-thawing. Overall, the supplementation with Ferula sp. to extender at a concentration of 60 µg L−1 positively influenced the motility parameters and FAs levels during cryopreservation and, Ferula sp. may act as a promising protective substance for the conservation of valuable fish genetic resources.
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İncele - MakaleAçık Erişim2025Scopus SJRQ3Bioactive Compounds and Antioxidant Properties of Mucus from Freshwater Snails Viviparus contectus and Planorbis rubrum
Kocabaş, Filiz Kutluyer; Kocabaş, Mehmet; Kızak, Volkan; Korkmaz, Büşra; Benzer, Fulya; Erişir, Mine
Abstract: As a viscous-elastic substance, snail mucus has a great attention in the medical and cosmetic industries in recent years due to contain many bioactive compounds. Freshwater snails are cosmopolite aquatic invertebrates and distribute nearly all types of inland aquatic bodies due to their adaptive abilities, rapid growth and short life cycles and, the compounds of mucus derived from freshwater snails has not been well documented. Hence, this study focused on identification bio-active ingredients and determination of protein content and antioxidant enzyme activities in freshwater snails Viviparus contectus and Planorbis rubrum mucus. Bioactive constituents of mucus in freshwater snails were characterized by Gas Chromatography-Mass Spectrometry (GC-FID-MS) analysis. Antioxidants (GSH, SOD, CAT and GSH-Px) and protein content were assessed in freshwater snails. Our data revealed that thirteen compounds are characterized with nonadecanoic acid methyl ester (11.57%), nonadecane (5.01%) and heptadecanoic acid methyl ester (4.19%) as the main components of P. rubrum mucus while eleven compounds are characterized with farnesol (11.23%), 5-hydroxymethyl-1,1,4α-Trimethyl-6-methylene-decahydronphthalen-2-ol (9.73%), kaur-16-en-18-oic acid methyl ester (9.64%), tricosane (9.62%), and kaurene (8.44%) as the main components of V. contectus mucus. Nonadecanoic acid methyl ester and nonadecane, known as effective bioactive constituents having antimutagenic and antitumor capability, were determined with 11.57 and 5.01% of the total bio-active composition of P. rubrum mucus, respectively. As a major constituent, farnesol was detected with 11.23% of the total bio-active composition of V. contectus mucus. Moreover, the presence of kaurene, known as a potent bioactive compound for cancer treatment, in notably quantity in V. contectus mucus. In addition, GSH levels and SOD, CAT, and GPx activities was highest level in P. rubrum compared to V. contectus. Protein content was highest level in V. contectus than P. rubrum. Overall, individual compounds of V. contectus and P. rubrum mucus could be isolated and purified and used for the treatment of a variety of human ailments.
- MakaleYalnız künye2025Scopus SJRQ4First Record of Black Sea Trout (Salmo labrax) and Its Potential Hybrids with Endemic Munzur Trout (Salmo munzuricus) in Uzunçayır Dam Lake, Tunceli
Ölçülü, Abdullatif; Düzgüneş, Zehra Duygu; Kocabaş, Filiz Kutluyer; Kızak, Volkan; Kocabaş, Mehmet
The depletion of unique genetic resources and increased risk of extinction may result from hybridization between native and introduced species. In the present study, morphological and molecular analysis were performed on two putative natural interspecific hybrids of the genus Salmo and their parent species, Salmo labrax and Salmo munzuricus, collected from Uzunçayır Dam Lake, which is fed by Munzur and Pülümür streams. Molecular analyses revealed the presence of S. labrax in Uzunçayır Dam Lake for the first time. Phylogenetic analysis using the cytochrome b (Cytb) gene of mitochondrial DNA to determine the maternal origin revealed that hybrid individuals belonged to the same clades as S. labrax or S. munzuricus. Recombination activating gene 1 (Rag1) sequence of nuclear DNA was analyzed for paternal analysis and it was determined that hybrid individuals carried similar single nucleotide polymorphisms (SNPs) to S. labrax or S. munzuricus. These findings support that individuals derive from different parental species. Therefore, evidence from trout samples assumed to be natural hybrids in this study suggests interspecific hybridization between S. labrax and S. munzuricus, but further studies are required. Rag1 Phenotype
- MakaleYalnız künye2019Scopus SJRQ3Anesthetic Efficiency of Three Medicinal Plant Oils for Aquatic Species: Coriander Coriandrum sativum, Linaloe Tree Bursera delpechiana, and Lavender Lavandula hybrida
Can, Erkan; Kızak, Volkan; Can, Şafak Seyhaneyıldız; Özçiçek, Esin
This study evaluated the potential of three essential oils (EOs) that were obtained from coriander Coriandrum sativum (CEO), linaloe tree Bursera delpechiana (BEO), and lavender Lavandula hybrida (LEO) as anesthetic agents. Convict Cichlids Amatitlania nigrofasciata (Günther 1867) were exposed to eight concentrations of anesthetic (50, 75, 100, 125, 150, 200, 250, and 300 μL/L). After exposure to the anesthetic, the fish were transferred to clean water to recover. All of the EOs produced an anesthetic effect after exposure to the compounds for 30 min at the minimal effective concentration (MEC), which was identified according to deep anesthesia (A5 < 3 min) and full recovery (R3 < 5 min) times. At 50 and 75 μL/L, the total loss of equilibrium was not observed for all tested EOs. The total loss of reflex was induced at a faster rate with higher concentrations of anesthetic in all groups. The recovery time generally increased as the concentration of the anesthetic increased. These findings suggest that CEO, BEO, and LEO are all novel potential anesthetics for aquaculture, and the optimal concentrations were identified as 150 μL/L (A5; 156 ± 1.7 s and R3; 165 ± 2.9 s), 125 μL/L (A5; 176 ± 3.5 s; R3; 125 ± 2.0 s), and 200 μL/L (A5; 20.1 ± 2.4 s and R3; 162 ± 3.4 s), respectively. When considering the active ingredients of EOs, this study also demonstrated that future studies should be focused on the major components such as linalyl acetate, 1.8-cineole, α-pinene, geraniol, and linalool. Their synergistic effects should be examined in herbal anesthetic treatments, since new commercial anesthetics will likely contain them.
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