Oceanological and Hydrobiological Studies最新文献_第6页

Spat efficiency of the smooth scallop Flexopecten glaber in the Aegean Sea, Türkiye 爱琴海柔顺扇贝的贝效研究

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2022-09-01 DOI: 10.26881/oahs-2022.3.05

S. Yi̇ği̇tkurt, A. Kırtık, Evrim Kurtay, Sinem Uğur, Y. Durmaz

引用次数: 0

Biodiversity of the benthic diatom flora in the coastal zone of the Gulf of Gdańsk: a case study of the Gdynia–Sopot transect Gdańsk湾海岸带底栖硅藻区系的生物多样性:以Gdynia-Sopot样带为例

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2022-06-01 DOI: 10.26881/oandhs-2022.2.10

Dominika Hetko, M. Witak, Sandra Oliwa

引用次数: 1

Heavy metal content in coral reef-associated fish collected from the central Red Sea, Saudi Arabia 从沙特阿拉伯红海中部采集的与珊瑚礁有关的鱼类的重金属含量

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2022-06-01 DOI: 10.26881/oandhs-2022.2.03

Lafi S. Al Solami

引用次数: 0

First record of the common sun star Crossaster papposus (L., 1767) in the Baltic Sea in over 100 years 100多年来在波罗的海首次记录到共同的太阳星帕波索斯十字星（L.，1767）

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2022-06-01 DOI: 10.26881/oandhs-2022.2.02

Katharina Romoth, M. Gogina, Kolja Beisiegel, A. Darr, M. Zettler

引用次数: 0

Intercellular and extracellular amino acids of different bloom species in the Mediterranean Sea 地中海不同水华物种的细胞间和细胞外氨基酸

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2022-06-01 DOI: 10.26881/oandhs-2022.2.06

Shimaa Hosny, M. El-sheekh, W. Labib

{"title":"Intercellular and extracellular amino acids of different bloom species in the Mediterranean Sea","authors":"Shimaa Hosny, M. El-sheekh, W. Labib","doi":"10.26881/oandhs-2022.2.06","DOIUrl":"https://doi.org/10.26881/oandhs-2022.2.06","url":null,"abstract":"Abstract The presented laboratory experiment was designed to characterize the quantity and compositional variation of algal extracellular amino acids (AAs) that may represent an alternative nutrient source in a natural environment. To resemble algal bloom scenarios, analyses were conducted in mono- and/or co-cultures of the bloom-forming species Skeletonema costatum, Scrippsiella trochoidea, Ulva fasciata, and Corallina officinalis during their active growth phase. The study revealed that S. costatum exhibited higher production of the dominant AAs than S. trochoidea. Alanine, lysine, and threonine acids are the dominant amino acids in S. costatum and S. trochoidea filtrates, which may play a role in mucus formation during mucosal phytoplankton blooms with negative ecological effects. On the other hand, aspartic, glutamine, alanine, and leucine acids are the dominant amino acids in macroalgae. In co-culture experiments, U. fasciata shows strong and rapid allelopathic activity against these two potentially harmful species. The AA production offers an advantage to species with the capacity to absorb them to form blooms. Thus, anthropogenic inorganic nutrient inputs may be less important for the development of algal blooms in coastal waters. A major difference that distinguishes this work from others is the use of specific multi-taxa cultures of phytoplankton and macroalgae. The study represents a new research effort in Alexandria waters.","PeriodicalId":19407,"journal":{"name":"Oceanological and Hydrobiological Studies","volume":"51 1","pages":"178 - 188"},"PeriodicalIF":0.9,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49264464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Skeletal deformities in Barbus xanthos (Teleostei: Cyprinidae) collected from the Dalaman River in southwestern Turkey 土耳其西南部达拉曼河中采集的黄刺鱼(钩骨鱼科)的骨骼畸形

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2022-06-01 DOI: 10.26881/oandhs-2022.2.08

L. Jawad, S. S. Güçlü

引用次数: 0

Assessment of 8-hydroxy-2-deoxyguanosine activity, apoptosis, acetylcholinesterase and antioxidant enzyme activity in Capoeta umbla brain exposed to chlorpyrifos 毒死蜱对8-羟基-2-脱氧鸟苷活性、细胞凋亡、乙酰胆碱酯酶和抗氧化酶活性的影响

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2022-06-01 DOI: 10.26881/oandhs-2022.2.05

M. Kırıcı

{"title":"Assessment of 8-hydroxy-2-deoxyguanosine activity, apoptosis, acetylcholinesterase and antioxidant enzyme activity in Capoeta umbla brain exposed to chlorpyrifos","authors":"M. Kırıcı","doi":"10.26881/oandhs-2022.2.05","DOIUrl":"https://doi.org/10.26881/oandhs-2022.2.05","url":null,"abstract":"Abstract In this study, neurotoxic responses to exposure to chlorpyrifos (CPF) at different doses (55 and 110 μg l-1) and at different time intervals (24 and 96 h) were investigated in Siraz fish (Capoeta umbla) using 8-hydroxy 2-deoxyguanosine (8-OHdG) activity, caspase-3, acetylcholinesterase (AChE) and oxidative stress parameters [malondialdehyde (MDA), catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx) and glutathione reductase (GR)]. In this study, the LC50 value of CPF was determined for the first time for C. umbla and calculated as 440 μg l-1. In this study, 12.5% (55 μg l-1) and 25% (110 μg l-1) of the LC50 value were used. The obtained data indicate a significant increase in the MDA level and inhibition of antioxidant enzymes in the brain (p < 0.05). Considering DNA damage and the apoptotic process, no significant changes were found in 8-OHdG and caspase-3 activity at both doses exposed for 24 h, but a significant increase was detected in both markers at 96 hours compared to the control group (p < 0.05). In the case of AChE activity, which is one of the neurotoxic markers in the brain, while inhibition was determined only at the high concentration (110 μg l-1) at the end of 24 hours, a decrease in enzyme activity was observed at the end of 96 hours in both concentration groups. In the light of all these results, we can say that CPF showed inhibitory effects on enzyme activity and inducing effects on MDA, caspase-3 and 8-OHdG levels. Based on these results, it can be concluded that CPF contributes to oxidative stress in fish and may have neurotoxic effects.","PeriodicalId":19407,"journal":{"name":"Oceanological and Hydrobiological Studies","volume":"51 1","pages":"167 - 177"},"PeriodicalIF":0.9,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47405017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of diet quantity on growth performance of juvenile sea cucumbers Holothuria scabra 日粮量对小海参生长性能的影响

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2022-06-01 DOI: 10.26881/oandhs-2022.2.04

Mamdouh A. Al-Harbi

引用次数: 0

Evaluation of ecological risk analysis for benthic macroinvertebrates in paddy fields in the Meriç–Ergene River Basin (Turkish Thrace) Meriç–Ergene河流域（土耳其色雷斯）稻田中底栖大型无脊椎动物的生态风险分析评估

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2022-06-01 DOI: 10.26881/oandhs-2022.2.09

G. Aydin, B. Çamur-Elipek

{"title":"Evaluation of ecological risk analysis for benthic macroinvertebrates in paddy fields in the Meriç–Ergene River Basin (Turkish Thrace)","authors":"G. Aydin, B. Çamur-Elipek","doi":"10.26881/oandhs-2022.2.09","DOIUrl":"https://doi.org/10.26881/oandhs-2022.2.09","url":null,"abstract":"Abstract Benthic macroinvertebrates are very important components of aquatic environments, and monitoring their population dynamics helps us understand the effects of environmental factors on ecosystems. This study aimed to determine the dynamics of benthic macroinvertebrate fauna in paddy fields in the Meriç–Ergene River Basin (Turkish Thrace region) by investigating some physicochemical environmental parameters that may affect its distribution. For this purpose, water and sediment samples were collected from paddy fields in the study area during the cultivation season, including spring, summer and autumn of 2016, taking into account the water resources that supply the rice fields (artesian water, the Meriç River, the Ergene River and Meriç–Ergene mixed water). A total of 47 taxa (on average 8953 individuals per m2) were identified at the study sites. Water samples were analyzed to determine water temperature, pH, conductivity, salinity, total dissolved solids, calcium, magnesium, total hardness, nitrite nitrogen, nitrate nitrogen, phosphate, sulfate, dissolved oxygen and pesticides, and sediment samples were analyzed to determine the content of some heavy metals, including Cd, Ni, Cu, and Mn. The biological risk index (mERM-Q) and the potential ecological risk index (RI) were applied to the data and a hypothetical ecological risk analysis was conducted using our data and data available in the literature to assess the ecological risk profile of the ecosystem based on benthic macroinvertebrates. To this end, environmental factors were grouped based on the literature as heavy metals (S1), nutrients (S2), other physicochemical parameters (S3) and pesticides (S4), while organisms were grouped as Oligochaeta, Chironomidae, Insecta and others based on the dynamics of benthic macroinvertebrates to assess pressure factors. As a result, pesticides (S4) were found to exert the strongest ecological pressure on benthic macroinvertebrate fauna in paddy fields in the Meriç–Ergene River Basin.","PeriodicalId":19407,"journal":{"name":"Oceanological and Hydrobiological Studies","volume":"51 1","pages":"212 - 223"},"PeriodicalIF":0.9,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43651862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Pre-probiotic effects of different bacterial species in aquaculture: behavioral, hematological and oxidative stress responses 水产养殖中不同细菌种类的益生菌前效应：行为、血液学和氧化应激反应

IF 0.9 4区环境科学与生态学

Oceanological and Hydrobiological Studies Pub Date : 2022-06-01 DOI: 10.26881/oandhs-2022.2.01

G. Alak, R. Kotan, A. Uçar, Veysel Parlak, M. Atamanalp

{"title":"Pre-probiotic effects of different bacterial species in aquaculture: behavioral, hematological and oxidative stress responses","authors":"G. Alak, R. Kotan, A. Uçar, Veysel Parlak, M. Atamanalp","doi":"10.26881/oandhs-2022.2.01","DOIUrl":"https://doi.org/10.26881/oandhs-2022.2.01","url":null,"abstract":"Abstract There is very limited aquaculture research on candidate probiotics and their effects on fish physiology. In this study, acute applications of four different molecularly identified bacterial species – Brevibacillus brevis FD-1 (A), Pseudomonas fluorescens FDG-37 (B), Bacillus sphaericus FD-48 (C), and B. amyloliquefaciens TV-17C (D), with potential in aquaculture, were tested in rainbow trout (Oncorhynchus mykiss) under static conditions. Physiological changes in blood tissue [hematological indices: erythrocyte count (RBC), leukocyte count (WBC), hemoglobin (Hb), hematocrit (Hct), platelet count (PLT), mean cell hemoglobin concentration (MCHC), mean cell hemoglobin (MCH), and mean cell volume (MCV)], oxidative stress responses in liver and gill tissues [malondialdehyde (MDA) level, antioxidant enzyme activities: superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPX), glutathione reductase (GR), glutathione-S-transferase (GST), glucose-6-phosphate dehydrogenase (G6PD)] and acetylcholinesterase (AChE) activity in brain tissue (as neurotoxic biomarker) were investigated. Additionally, behavioral differences were recorded by measuring swimming performance to support neurotoxic findings in all treatment groups. The LC5024 value of FDG-37 strain was determined through analysis as 1.0 × 108 CFU ml-1. Inhibition of enzyme activity, increase in the MDA level, as well as significant differences in hematological indices and swimming performance were determined in rainbow trout treated with B compared to control and other bacterial groups in gills. The potential for using group FD-48 and TV-17C bacterial strains as probiotics in aquaculture is more pertinent when considering the research findings and water quality parameters.","PeriodicalId":19407,"journal":{"name":"Oceanological and Hydrobiological Studies","volume":"51 1","pages":"133 - 142"},"PeriodicalIF":0.9,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41500071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2