Sustainable land-based IMTA: Holistic management of finfish, mussel, and macroalgae interactions, emphasizing water quality and nutrient dynamics.

This research aims to minimize the environmental impact and promote the sustainability of aquaculture by optimizing nutrient dynamics, improving water quality and enhancing species growth performance through a land-based Integrated Multi-Trophic Aquaculture (IMTA) system. The study focused on Black Sea trout (Salmo labrax), Mediterranean mussel (Mytilus galloprovincialis), and sea lettuce (Ulva lactuca), reared in interconnected tanks using Black Sea water over 90 days. The Black Sea trout more than doubled in size to 333.

Multiplex PCR assay for the accurate and rapid detection and differentiation of Lactococcus garvieae and L. petauri.

Lactococcosis is a common bacterial fish disease caused by Lactococcus garvieae, L. petauri and L. formosensis.

Evaluation of the health of Mediterranean mussels (Mytilus galloprovincialis Lamarck, 1819) distributed in the Çanakkale strait, Turkey.

The observation of mortality in Mediterranean mussels (Mytilus galloprovincialis) distributed in the Çanakkale Strait in recent years was influential in developing the research question for this study. In this study, the presence of bacteria (Vibrio spp.) and parasites (Marteilia spp.

Living on the edge: Crayfish as drivers to anoxification of their own shelter microenvironment.

Burrowing is a common trait among crayfish thought to help species deal with adverse environmental challenges. However, little is known about the microhabitat ecology of crayfish taxa in relation to their burrows. To fill this knowledge gap, we assessed the availability of oxygen inside the crayfish shelter by series of in-vivo and in-silico modelling experiments.

16S-23S rRNA Internal Transcribed Spacer Region () Sequencing: A Potential Molecular Diagnostic Tool for Differentiating and .

is the etiological agent of lactococcosis, a clinically and economically significant infectious disease affecting farmed rainbow trout. had been considered the only cause of lactococcosis for a long time; however, , another species of the genus , has lately been linked to the same disease. The genomes and biochemical profiles of and have a high degree of similarity.

Whole Genome Sequence of a Novel Bacteriophage APT65 Infecting .

Background: is a prevalent pathogenic bacterium in aquaculture that causes economic loss around the world. Antimicrobials are used to control and prevent the incidence of bacterial pathogens in aquaculture. However, they lead to the emergence of antimicrobial resistance strains and the accumulation of antibiotic residues in fish tissue.

Enzymatic, skeletal, and histological ontogeny of shi drum (Umbrina cirrosa) larvae under intensive culture conditions.

This study was conducted to investigate the structural and ontogenetic development of the skeletal system and digestive tract histologically and enzymatically in larvae of shi drum (U. cirrosa) under intensive rearing conditions until 40 days after hatching (DAH). Among digestive enzymes, amylase was detected at 0.

Plastic occurrence in fish caught in the highly industrialized Gulf of İzmit (Eastern Sea of Marmara, Türkiye).

Occurrence of micro- (<5 mm) and mesoplastics (5-25 mm) in twelve fish species caught off Gulf of İzmit in the Sea of Marmara was investigated. Plastics were found in the gastrointestinal tracks of all the analysed species: Trachurus mediterraneus, Chelon auratus, Merlangius merlangus, Mullus barbatus, Symphodus cinereus, Gobius niger, Chelidonichthys lastoviza, Chelidonichthys lucerna, Trachinus draco, Scorpaena porcus, Scorpaena porcus, Pegusa lascaris, Platichthys flesus. From a total of 374 individuals examined plastics were found in 147 individuals (39%).

Evaluating sea cucumbers as extractive species for benthic bioremediation in mussel farms.

Filter-feeding mussels blend suspended particles into faeces and pseudo-faeces enhancing organic matter flows between the water column and the bottom, and strengthening benthic-pelagic coupling. Inside operating farms, high bivalve densities in relatively confined areas result in an elevated rate of organic sinking to the seabed, which may cause a localized impact in the immediate surrounding. Deposit-feeding sea cucumbers are potentially optimal candidates to bioremediate mussel organic waste, due to their ability to process organic-enriched sediments impacted by aquaculture waste.

Potential application of cryogenic freezer on turbot sperm cryopreservation.

Background: Cryopreservation is a common practice to preserve fish sperm for prolonged periods.

Objective: To examine the effect of different freezing protocols on sperm characteristics, fertilization, and hatching rate of turbot.

Materials And Methods: Milt was obtained from ten 8-year-old turbot (54.

Influence of laurel (Laurus nobilis) essential oil on gut function of Black Sea salmon (Salmo labrax) juveniles.

The present work investigated the effects of dietary incorporation of laurel (Laurus nobilis) essential oil on the zootechnical performance and digestive physiology of juvenile Black Sea salmon (Salmo labrax). In this trial, 15 fiberglass tanks (39 × 39 cm square and 33 cm high) were used. Forty-five fish (3.

NGS analysis revealed that Lactococcus garvieae Lg-Per was Lactococcus petauri in Türkiye.

Lactococcus garvieae Lg-per was originally isolated from rainbow trout cultured in cages located on the Turkish coast of the Black Sea in 2011. A whole genome sequence of Lg-per was performed in the present study. The complete genome of Lg-per mapped to the reference genomes of L.

The first outbreak of citrobacteriosis caused by in reared Russian sturgeon () in Turkiye.

Russian sturgeon () is an endangered fish species and also an important resource for the sturgeon aquaculture industry in Turkiye. Recently, a fatal and persistent bacterial disease occurred in the reared sturgeon kept in a trout farm in Turkiye. The disease outbreak has been with notable external signs including petechial hemorrhages and systemic anemia.

Global dataset of species-specific inland recreational fisheries harvest for consumption.

Inland recreational fisheries, found in lakes, rivers, and other landlocked waters, are important to livelihoods, nutrition, leisure, and other societal ecosystem services worldwide. Although recreationally-caught fish are frequently harvested and consumed by fishers, their contribution to food and nutrition has not been adequately quantified due to lack of data, poor monitoring, and under-reporting, especially in developing countries. Beyond limited global harvest estimates, few have explored species-specific harvest patterns, although this variability has implications for fisheries management and food security.

Morphological variation and phylogeny of Karenia selliformis (Gymnodiniales, Dinophyceae) in an intensive cold-water algal bloom in eastern Hokkaido, Japan.

Harmful algal blooms responsible for mass mortalities of marine organisms have been rare in Hokkaido, northern Japan, although fish-killing blooms have been frequently reported from western Japanese coasts. In September-November 2021, a huge and prolonged cold-water bloom occurred along the Pacific coast of eastern Hokkaido, and was associated with intensive mortalities of sea urchin, fish, octopus, shellfish, etc. In this study, morphology and phylogeny of the dominant and co-occurring unarmored dinoflagellates of the Kareniaceae in the bloom were examined by using light microscopy, scanning electron microscopy and molecular phylogeny inferred from ITS and LSU rDNA (D1-D3) sequences.

Spatial, temporal, and vertical variability of nutrients in the Southeastern Black Sea.

In this study, the nutrient concentrations along the coastal region of the Southeastern Black Sea were evaluated based on temporal, spatial, and vertical distributions. The water samples were collected seasonally in 2013 from 432 depths covering 55 stations. The nutrient concentrations showed significant spatial and temporal variations that declined abruptly from shore to offshore.

Anatomical features of ossa cordis in the Steller sea lion.

Irregular triangular cartilage or bone fragments are sometimes found in the fibrous triangle of the heart. Ossa cordis and/or cartilago cordis has been demonstrated in various terrestrial animal species. Regarding marine mammals, sperm whales lack heart bones, and there have been no studies on bones or cartilage in pinniped hearts.

Genetic structure and demographic history of endangered (Güldenstädt, 1814) populations from Lake Van basin in Turkey inferred from mtDNA analyses.

Genetic diversity, genetic structure, and demographic history of the endemic and endangered cyprinid species based on samples from 17 populations consisting of resident and potamodromous specimens from the Lake Van basin in eastern Turkey were analyzed using two mitochondrial DNA markers. populations in the Lake Van basin are genetically heterogeneous, as indicated by the high haplotype and low nucleotide diversity of 1233 bp of the 16S rRNA marker (44 haplotypes; 70 polymorphic sites, haploid diversity () = 0.9130, π = 0.

In vivo and in vitro evolution of the effects of cypermethrin on turbot (Scophthalmus maximus, Linnaeus, 1758) spermatozoa.

Synthetic pyrethroid pesticide is commonly used in agricultural activities in the Black Sea region during reproduction period of turbot. In this sense, in vivo and in vitro studies have shown that cypermethrin (CYP) could be one of the environmental factors affecting decreasing turbot stocks. In this study, effects of in vivo and in vitro administration of CYP, a synthetic pyrethroid, on sperm kinematics motility (MOT), progressive motility (PM), curvilinear velocity (VCL), straight line velocity (VSL), average path velocity (VAP), linearity (LIN), straight line velocity (STR), amplitude of lateral head (ALH), beat cross frequency (BCF), oxidative stress biomarkers malondialdehyde (MDA), reduced glutathione (GSH), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx) and lipid peroxidation (LPO) and also histopathological alterations in gonads were investigated in spermatazoa of turbot (Schopthalmus maximus).

Molecular identification of Uronema marinum (Protozoa, Ciliophora, Scuticociliatia) in cultured turbot (Psetta maxima) larvae.

Scuticociliates are dangerous parasitic pathogens causing systemic tissue destruction and high mortality in marine fish worldwide. In this study, the first identification of (Ciliophora, Scuticociliatida) from cultured turbot () larvae using mitochondrial cytochrome c oxidase 1 (1) gene sequence as well as species-specific primers was reported. The mean prevalence values of infected fish were calculated, and partial sequencing obtained from the mitochondrial 1 gene region was also compared with isolates registered in the Genbank database.

Population genetic structure of turbot (Scophthalmus maximus L., 1758) in the Black Sea.

Turbot, Scophthalmus maximus, is a commercially important demersal flatfish species distributed throughout the Black Sea. Several studies performed locally with a limited number of specimens using both mitochondrial DNA (mtDNA) and microsatellite markers evidenced notable genetic variation among populations. However, comprehensive population genetic studies are required to help management of the species in the Black Sea.

Relationship Between Heavy Metal Accumulation in Fish Muscle and Heavy Metal Resistance Genes in Bacteria Isolated from Fish.

Cadmium, cobalt, copper, nickel, and zinc are the most common pollutant heavy metals that can be discharged into the marine environment with different sources. Whiting (Merlangius merlangus) and mullet (Mullus barbatus) were sampled in four seasons in a year to determine Cd, Co, Cu, Ni, and Zn levels in the muscle and to determine heavy metal resistance genes (MRGs) such as copA, czc, and ncc genes in coliform bacteria isolated from the fish. In both species, zinc was the most abundant metal, while Cd and the Co levels were scarce.

Effect of proteases and alcohols used for debittering on characteristics and antioxidative activity of protein hydrolysate from salmon frames.

Protein hydrolysates were obtained from salmon frame using Alcalase or Flavourzyme at 3% (w/w protein) for 180 min. Protein hydrolysates prepared using Alcalase (HA) and Flavourzyme (HF) had DH and yield of 25.1-26.