Evaluation of Methylene Blue as An Effective Antiseptic for Medicinal Leeches ().

Objective: Medicinal leeches ( spp.) have been used for therapeutic purposes in humans since ancient times. Because of their growth conditions, leeches carry certain bacteria and endosymbionts (e.

Review of microplastics and chemical risk posed by plastic packaging on the marine environment to inform the Global Plastics Treaty.

Plastic overproduction and the resulting increase in consumption has made plastic pollution ubiquitous in all ecosystems. Recognizing this, the United Nations (UN) has started negotiations to establish a global treaty to end plastic pollution, especially in the marine environment. The basis of the treaty has been formulated in terms of turning off the tap, signaling the will to prevent plastic pollution at its source.

Determination of oxidative stress responses caused by aluminum oxide (γ-AlO and α-AlO) nanoparticles in Gammarus pulex.

The rapid growth in the use of aluminum oxide nanoparticles (AlO NPs) in various fields such as medicine, pharmacy, cosmetics industries and engineering, and the fact that these NPs and their wastes mix with the aquatic environment and damage the aquatic ecosystem, affect the organisms in the water, enter the food chain and reach humans is a major problem is cause for concern. The aim of this study is to investigate the oxidative stress caused by two separate forms of aluminum oxide, γ-AlO and α-AlO, in Gammarus pulex, which is a good indicator species, with biochemical parameters. For this purpose, G.

Effect of Diet on Growth Performance of First Crab Stage Rathbun, 1896 (Brachyura: Portunidae): A Comparison of Three Different Regimens.

This study aimed to supply three foods to the crab in its juvenile stage and compare their effects on its growth. For that, crab larvae were cultured from oviparous adult female crabs. The larvae (z-z) were fed with rotifers, previously cultured with microalgae and megalopae (Meg.

First Report of (Digenea: Hemiuridae) from on the Turkish Coast of the Black Sea, with Light and Scanning Electron Microscopic Observations.

Objective: The aim of this study is to investigate in detail the morphological features of the digenean parasite isolated from the European anchovy using light and scanning electron microscopy (SEM).

Methods: The specimens of were obtained from the pharynx and stomach of the European caught by commercial fishing vessels in the Black Sea. Parasites were killed in a hot normal saline solution, preserved in to 70% ethanol for light microscopic (LM) studies, and in 2.

Hirudinea (Annelida) Fauna of Some Wetlands in Bingöl Province.

Objective: Leeches are important and reliable indicators of water quality and biodiversity in the ecosystem, so the presence of specific leech species is often closely related to basic water conditions and the presence of certain animals. This study was carried out in 2017 and 2018 in order to determine the Hirudinea fauna of some wetlands in Bingöl province. The investigation was conducted on a total of 13 stations.

The impact of nano/micro-plastics toxicity on seafood quality and human health: facts and gaps.

Contamination of the food and especially marine environment with nano/micro-plastic particles has raised serious concern in recent years. Environmental pollution and the resulting seafood contamination with microplastic (MP) pose a potential threat to consumers. The absorption rate of the MP by fish is generally considered low, although the bioavailability depends on the physical and chemical properties of the consumed MP.

Chaotic genetic structure and past demographic expansion of the invasive gastropod Tritia neritea in its native range, the Mediterranean Sea.

To better predict population evolution of invasive species in introduced areas it is critical to identify and understand the mechanisms driving genetic diversity and structure in their native range. Here, we combined analyses of the mitochondrial COI gene and 11 microsatellite markers to investigate both past demographic history and contemporaneous genetic structure in the native area of the gastropod Tritia neritea, using Bayesian skyline plots (BSP), multivariate analyses and Bayesian clustering. The BSP framework revealed population expansions, dated after the last glacial maximum.

Mediterranean dirty edge: High level of meso and macroplastics pollution on the Turkish coast.

It has become apparent that the coastal zones of aquatic environments are significantly affected by plastics pollution. The accumulation of marine plastic litter on beaches is an important problem due to their significant environmental impacts. In this study, 13 coastal areas in Iskenderun Bay (NE Levantine coast of Turkey) were sampled in May 2018 to investigate meso and macroplastic (0.

The effects on brown trout (Salmo trutta fario) of different concentrations of deltamethrin.

Deltamethrin (DMN) exposure causes severe damage to the gill and liver tissues of aquatic organisms, as well as neurotoxic effects and metabolic disorders. The goal of the present study was to assess the impacts of DMN toxicity on blood biochemistry, malondialdehyde (MDA) levels, catalase (CAT) levels, behavior disorder, acetylcholinesterase (AChE) activity, histopathology and 8-hydroxy-2-deoxyguanosine (8 OHdG) of brown trout (Salmo trutta fario). Acute concentrations (1.

Metazoan Parasite Faunas of Three Gobiid Species (Actinopterygii: Gobiidae) Inhabiting the Lower Kızılırmak Delta in Samsun: A Comparative Study.

Objective: The aim of the present study was to investigate and compare metazoan parasite faunas of three gobiid fishes, Neogobius fluviatilis, Proterorhinus marmoratus, and Pomatoschistus marmoratus, inhabiting the Lower Kızılırmak Delta.

Methods: Fish specimens were caught using fishing nets and electroshock device. The fishes were transferred to the laboratory and examined under a dissecting microscope for metazoan parasites using conventional methods.

Some Antioxidants and Malondialdehyde Levels in the Flesh of Rainbow Trout, (Oncorhynchus mykiss W., 1792) from Various Feeding Habitats.

The present study was aimed to find the effect of feeding habitats on the amounts of some antioxidants (vitamin A, E, C, ß-carotene and selenium) and malondialdehyde (MDA) levels in the flesh of rainbow trout (Oncorhynchus mykiss). For this purpose, vitamins (A, C and E), β-carotene amounts and malondialdehyde (MDA) levels were determined by HPLC and selenium amount was determined by fluorometric method in the flesh of rainbow trout obtained from various feeding habitats. The highest amounts of vitamins (A, C and E), β-carotene and selenium were found in the flesh of wild rainbow trout (WRT), followed by cage reared rainbow trout (CRRT) and pond reared rainbow trout (PRRT).

Preliminary Study on Nematocyst Types and Venom Isolation of Cassiopea andromeda Forskål, 1775 (Scyphozoa, Cnidaria) from Turkey.

Nematocyst types of Cassiopea andromeda were investigated. Medusae samples were taken from Güllük Bay, Muğla, Turkey. Nematocyst samples from oral arms of C.

A new species of Halaphanolaimus (Nematoda: Leptolaimidae) from the southern Black Sea (Turkey) with a modified key for species identification.

Halaphanolaimus sergeevae n. sp. is described and illustrated from the Sinop coasts (southern Black Sea, Turkey).

Comparison of biochemical composition of three aqua cultured fishes (Dicentrarchus labrax, Sparus aurata, Dentex dentex).

The moisture, ash, protein and fat content and amino acid, fatty acid and mineral compositions in the flesh of three commercially important fish species (Dicentrarchus labrax, Sparus aurata, Dentex dentex) from the aqua culture of Turkey were evaluated. Ranges of moisture, ash, protein and fat contents were 69.68-76.

Chemical composition and biometrical measurements of the Turkish sea urchin (Paracentrotus Lividus, Lamarck, 1816).

We determined the monthly percentage values of biochemical components in paracentrotus lividus, for a 6-month period, and evaluated the findings in relation to seasonal fluctuations in water temperature and weather. Our study is the first to present a long-term biochemical profile of p. lividus in Turkey.