Aquatic Sciences and Engineering最新文献_第10页

Length-Weight Relationships for Three Deep Sea Fish Species in North Eastern Mediterranean, Turkey 土耳其地中海东北部三种深海鱼类的长重关系

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Aquatic Sciences and Engineering Pub Date : 2020-03-20 DOI: 10.26650/ase2020683520

Yusuf Kenan, S. Ergüden, D. Ergüden

引用次数: 3

Some Growth Parameters of Five Fish Species in the Lower Sakarya River, Turkey 土耳其萨卡里亚河下游五种鱼类的某些生长参数

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Aquatic Sciences and Engineering Pub Date : 2020-03-20 DOI: 10.26650/ase2020650992

İsmail Reis, Hasan Cerim, C. Ateş

引用次数: 0

Bacterial Community Composition of Sapanca Lake During a Cyanobacterial Bloom 一次蓝藻爆发期间沙潘卡湖的细菌群落组成

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Aquatic Sciences and Engineering Pub Date : 2020-03-13 DOI: 10.26650/ase2020652073

E. Özbayram, Latife Köker, R. Akçaalan, O. Ince, Meriç Albay

{"title":"Bacterial Community Composition of Sapanca Lake During a Cyanobacterial Bloom","authors":"E. Özbayram, Latife Köker, R. Akçaalan, O. Ince, Meriç Albay","doi":"10.26650/ase2020652073","DOIUrl":"https://doi.org/10.26650/ase2020652073","url":null,"abstract":"Microbial community compositions and functions of freshwater ecosystems vary due to the environmental parameters and water chemistry. Transient bloom events play a crucial role on the community profiles. In this study, a specific focus was set to provide a snapshot of the bacterial community composition in Lake Sapanca, associated with cyanobacterial bloom by high throughput sequencing method. For this purpose, a sample was collected in the shore of Lake Sapanca during a cyanobacterial bloom, and the bacterial community profile was examined by 16S rRNA amplicon sequencing using the Illumina MiSeq platform. Cyanobacteria represented 94% of the all reads. The bacterial community was re-calculated to evaluate the bacterial diversity in detail by filtering cyanobacterial sequences. The community was dominated by Proteobacteria (44%) and Bacteroidetes (33%) species which are abundant in freshwater ecosystems having an ability to degrade complex organics. Among the classified genera, Flavobacterium and Rheinheimera dominated the bacterial community suggesting a strong link between those species and the cyanobacterial bloom. The experimental work presented here provides one of the first investigations of total bacterial communities in Lake Sapanca by the high throughput sequencing method. Further work is needed with more sampling points and time series to fully understand the bacterial diversity and dynamics.","PeriodicalId":52866,"journal":{"name":"Aquatic Sciences and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2020-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69058335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

The Levels of Plastic-associated Heterotrophic Bacteria on Three Different Types of Plastics 三种不同类型塑料上塑料相关异养细菌的水平

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Aquatic Sciences and Engineering Pub Date : 2020-01-24 DOI: 10.26650/ase2020580505

P. S. Çiftçi Türetken, G. Altuğ, Turgay Öksüzoğlu

{"title":"The Levels of Plastic-associated Heterotrophic Bacteria on Three Different Types of Plastics","authors":"P. S. Çiftçi Türetken, G. Altuğ, Turgay Öksüzoğlu","doi":"10.26650/ase2020580505","DOIUrl":"https://doi.org/10.26650/ase2020580505","url":null,"abstract":"Plastic pollution in marine ecosystems is one of the most important study topics in recent years. The toxicity, mobility and long-term persistence characteristics of plastics create risk in ecosystems, biota and human health. In this study, the levels of heterotrophic bacteria attached to the surfaces of commonly used plastic types; polyvinylchloride (PVC), polyethylene (PE), and polypropylene (PP) were tested in a mechanical experimental system prepared with seawater under controlled conditions in laboratory. The seawater, which was used in the experimental system, was taken under aseptic conditions from the Golden Horn Estuary, located in the Istanbul region of Turkey. Three different types of plastic (PVC, PE and PP), in two different (glass slide (76x26 cm) and virgin micro pellets (5mm diameter) size, were placed in the experiment setup filled with seawater and incubated for 28 days at ambient temperature. At the end of 28 days, the counts of heterotrophic bacteria were tested using the spread plate technique on Marine Agar (Difco), in both plastic surfaces and surrounding seawater. The levels of heterotrophic bacteria were recorded to be lower in the seawater surrounding the micropellets and lam-size plastic samples. The seawater sample bacterial levels were recorded as 12x109 CFU/ml, at the start of the experiment. At the end of the 28th days, it was recorded to be 83x109 CFU/ml. The highest levels of heterotrophic bacteria were recorded as 41x1010 CFU /cm-2 and 61x1010 CFU /cm-2 on the lam-size surfaces and the micropellet surface of the polypropylene samples, respectively. In the experiments, the PP plastic type has been recorded as a more preferred plastic derivative by heterotrophic bacteria according to the PVC and PE plastic types, but there has been no significant difference in the bacterial adhesion rates on the surfaces. The study contributed increasing knowledge on the bacterial approach to microplastics types. However, there is a need for long term studies related to the mechanism of bacteria attached to microplastics.","PeriodicalId":52866,"journal":{"name":"Aquatic Sciences and Engineering","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2020-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43421225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Relationships between Body Size, Weight and Fecundity of the Endangered Fish Alburnus carinatus Battalgil, 1941 in the Manyas Lake (Turkey) 土耳其Manyas湖濒危鱼类Alburnus carinatus battgil 1941年体型、体重与繁殖力的关系

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Aquatic Sciences and Engineering Pub Date : 2019-10-30 DOI: 10.26650/ase2019600582

G. Saç, Ö. Gaygusuz

引用次数: 1

Nutritional Composition and Fatty Acid Profile of Commercially Important Mullet Species in the Köyceğiz Lagoon Köyceğiz泻湖商业重要Mullet物种的营养成分和脂肪酸特征

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Aquatic Sciences and Engineering Pub Date : 2019-09-16 DOI: 10.26650/ase2019598683

Y. Alparslan, Cansu Metin, H. H. Yapıcı, Zerrin Ekşi, Ümran Ateş, T. Baygar

{"title":"Nutritional Composition and Fatty Acid Profile of Commercially Important Mullet Species in the Köyceğiz Lagoon","authors":"Y. Alparslan, Cansu Metin, H. H. Yapıcı, Zerrin Ekşi, Ümran Ateş, T. Baygar","doi":"10.26650/ase2019598683","DOIUrl":"https://doi.org/10.26650/ase2019598683","url":null,"abstract":"The present study is aimed to detect the nutritional composition and fatty acids profile of two different Mullet species caught from the/a fish barrier in Koycegiz Lagoon (Mugla, Turkey) over a period of 12 months. A nutritional composition (protein, lipid, moisture and ash) and fatty acids profile were carried out for each commercially important mullet species; Mugil cephalus and Chelon saliens using standard measurement methods and gas chromatography (GC), respectively. The nutritional composition of the species showed differences depending on the harvesting and spawning seasons. Two mullet species had the highest fat content (P<0.05) in spawning time, while moisture content was low (P<0.05) during the same period. Predominant fatty acids for two different mullet species were myristic acid, palmitic acid and stearic acid as saturated (SFA); palmitoleic acid, oleic acid and cis-11-eicosenoic acid as monounsaturated fatty acids (MUFAs); linoleic, cis-8, 11, 14- eicosatrienoic, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) as polyunsaturated fatty acids (PUFAs). The nutritional and fatty acid composition content of species varied due to the harvesting season, reproduction period and age of the fish. The results exhibited that mullet species during the reproductive period have higher lipid content and fatty acid composition, especially in terms of EPA and DHA.","PeriodicalId":52866,"journal":{"name":"Aquatic Sciences and Engineering","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44945414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Characterization and Activity of Protease Enzyme on Different Days of Tadpoles [Pelophylax ridibundus (Pallas, 1771)] 蝌蚪不同天数蛋白酶的特性和活性[Polophylax ridibundus（Pallas，1771）]

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Aquatic Sciences and Engineering Pub Date : 2019-09-16 DOI: 10.26650/ase2019567360

H. Şereflişan, Ahmet Alkaya, Kaya Gökçek

引用次数: 0

Benthic Diatom Composition of Iztuzu Coastal Lake, Dalyan (Aegean Sea, Turkey) 土耳其爱琴海达尔扬伊兹图祖湖岸底栖硅藻组成

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Aquatic Sciences and Engineering Pub Date : 2019-09-16 DOI: 10.26650/ase2019575987

Aydın Kaleli

引用次数: 6

The Effect of Seasons on Gill Net Selectivity 季节对刺网选择性的影响

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Aquatic Sciences and Engineering Pub Date : 2019-09-16 DOI: 10.26650/ase2019575395

A. Ayaz, Uğur Altinağaç, Alkan Öztekin, Uğur Özekinci

{"title":"The Effect of Seasons on Gill Net Selectivity","authors":"A. Ayaz, Uğur Altinağaç, Alkan Öztekin, Uğur Özekinci","doi":"10.26650/ase2019575395","DOIUrl":"https://doi.org/10.26650/ase2019575395","url":null,"abstract":"In this study, the aim was to investigate the seasonal variations in the selectivity of striped red mullet (Mullus surmuletus L., 1758) captured by gill nets during the year in the north Aegean Sea. Fisheries’ operations were carried out between August 2008 and August 2009. Gill nets with 18, 20, and 22 mm mesh sizes were used in the trials. These nets are widely used in the region. Gill nets were deployed three hours before sunset and were removed from the sea at sunset. Similarly, the nets were set up two hours before sunrise and hauled from the sea an hour after sunrise. The SELECT method was used to determine the selectivity of gill nets. The deviances from the SELECT method revealed that lognormal models gave the best fits for all seasons. As a result of the calculations made according to the lognormal model, the modal lengths of the gill nets were calculated as the shortest in the spring season and the longest in the summer. The spread values of the selectivity curves of the experimental gill nets were determined the lowest in the winter season and the highest in the summer season. As a result of selectivity analysis, the differences between the spring and summer season modal lengths of the nets were calculated as 1.5 cm, 1.65 cm, and 1.82 cm for the nets with 18 mm, 20 mm, and 22 mm mesh sizes, respectively. The study results showed that the fishing season was important in gill nets selectivity.","PeriodicalId":52866,"journal":{"name":"Aquatic Sciences and Engineering","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43548597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A Preliminary Study on Using Rotifera Fauna to Determine The Trophic Level of The Büyükçekmece Reservoir (İstanbul, Turkey) 利用Rotifera动物群测定土耳其伊斯坦布尔Büyükçekmece水库营养水平的初步研究

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Aquatic Sciences and Engineering Pub Date : 2019-09-16 DOI: 10.26650/ase2019586048

Z. Dorak

{"title":"A Preliminary Study on Using Rotifera Fauna to Determine The Trophic Level of The Büyükçekmece Reservoir (İstanbul, Turkey)","authors":"Z. Dorak","doi":"10.26650/ase2019586048","DOIUrl":"https://doi.org/10.26650/ase2019586048","url":null,"abstract":"In this study, the abundance of rotifera fauna, in the Buyukcekmece Reservoir (Istanbul) and some physicochemical features of the reservoir, were investigated between May 2009 and February 2010. In terms of physicochemical conditions, the trophic state of the reservoir was determined as eutrophic (CTSI= 57.8). A total of 33 rotifera species were identified. Keratella cochlearis represented 40.62% of the total annual rotifera present, and was predominant. It was followed by Polyarthra vulgaris (10.14%), Synchaeta oblonga (9.06%), Brachionus urceolaris (5.58%), Pompholyx sulcata (5.21%) and Epiphanes macroura (%4.86), respectively. The contribution of the other rotifer species to the annual presence of rotifera was determined as being 24.52%. The dominance of these species was attributed to the eutrophic state of the reservoir, because K. cochlearis, P. vulgaris, B. urceolaris and P. sulcata are known as eutrophication indicator species, due to their saprobic valences. Also, the trophic state of the reservoir was found to be eutrophic according to the QB/T index (= 3). According to the present data about rotifera species, and the abundance of them, the Buyukcekmece Reservoir was specified as eutrophic. However it is necessary to follow the conditions with periodic monitoring to observe the alterations in the Buyukcekmece Reservoir, in this respect the results of the present study would constitute an important baseline for subsequent studies.","PeriodicalId":52866,"journal":{"name":"Aquatic Sciences and Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.7,"publicationDate":"2019-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41631129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4