Pub Date : 2021-05-04DOI: 10.29329/actanatsci.2021.314.3
N. Gültepe
Perceived as an indicator of the balance in wildlife and clean nature, the Eurasian otter (Lutra lutra L.) is near-threatened due to the fact that its fur is valuable, the increase in environmental pollution, the decrease in wetlands, the rivers in their habitats are turned into channels. There are 86 rainbow trout (Oncorhynchus mykiss) farms legally licensed by the Provincial Ministry of Agriculture and Forestry Mugla - Turkey. Since otter meets 70% of its nutrient need from fish, it is seen as a predatory species by aquaculture producers. For this reason, it is necessary to work on establishing otter habitats and breeding farms jointly with rainbow trout farmers in order to eliminate the negative effects of both rainbow trout farms and Eurasian otters. In this way, Eurasian otters that are near-threatened, will be saved and also a different contribution will be made to our economy.
{"title":"A Different Approach to the Interaction of Rainbow Trout (Oncorhynchus mykiss) Culture and the Eurasian Otter (Lutra lutra L.)","authors":"N. Gültepe","doi":"10.29329/actanatsci.2021.314.3","DOIUrl":"https://doi.org/10.29329/actanatsci.2021.314.3","url":null,"abstract":"Perceived as an indicator of the balance in wildlife and clean nature, the Eurasian otter (Lutra lutra L.) is near-threatened due to the fact that its fur is valuable, the increase in environmental pollution, the decrease in wetlands, the rivers in their habitats are turned into channels. There are 86 rainbow trout (Oncorhynchus mykiss) farms legally licensed by the Provincial Ministry of Agriculture and Forestry Mugla - Turkey. Since otter meets 70% of its nutrient need from fish, it is seen as a predatory species by aquaculture producers. For this reason, it is necessary to work on establishing otter habitats and breeding farms jointly with rainbow trout farmers in order to eliminate the negative effects of both rainbow trout farms and Eurasian otters. In this way, Eurasian otters that are near-threatened, will be saved and also a different contribution will be made to our economy.","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130592737","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}
Pub Date : 2021-01-24DOI: 10.29329/actanatsci.2021.314.1
S. Kale, S. Berber, D. Acarlı, Tekin Demirkiran, P. Vural, S. Acarlı, B. Kızılkaya, E. Tan
Two individuals of Pontastacus leptodactylus (Eschscholtz, 1823) were collected from Atikhisar Reservoir in Canakkale, Turkey. The individuals were caught by using a fyke-net. The fyke-nets were collected after 3-days soaking time from the reservoir on 18 July 2020. The sampling was carried out during the daytime. The sediment of the sampling location had a muddy substrate. Both blue colored individuals of crayfish (Pontastacus leptodactylus) were female. Blue color anomaly was observed in all parts of the bodies of both individuals. Morphometric characteristics were measured and the total lengths were 104.83 mm and 76.92 mm, and weights were 36.09 g and 11.76 g, respectively. The genetics of the mutant species should be examined in future studies to better understanding of the main factors causing color anomalies.
{"title":"Blue Color Anomaly in Turkish Crayfish Pontastacus leptodactylus (Eschscholtz, 1823) (Crustacea, Decapoda, Astacidae) From Atikhisar Reservoir in Çanakkale, Turkey","authors":"S. Kale, S. Berber, D. Acarlı, Tekin Demirkiran, P. Vural, S. Acarlı, B. Kızılkaya, E. Tan","doi":"10.29329/actanatsci.2021.314.1","DOIUrl":"https://doi.org/10.29329/actanatsci.2021.314.1","url":null,"abstract":"Two individuals of Pontastacus leptodactylus (Eschscholtz, 1823) were collected from Atikhisar Reservoir in Canakkale, Turkey. The individuals were caught by using a fyke-net. The fyke-nets were collected after 3-days soaking time from the reservoir on 18 July 2020. The sampling was carried out during the daytime. The sediment of the sampling location had a muddy substrate. Both blue colored individuals of crayfish (Pontastacus leptodactylus) were female. Blue color anomaly was observed in all parts of the bodies of both individuals. Morphometric characteristics were measured and the total lengths were 104.83 mm and 76.92 mm, and weights were 36.09 g and 11.76 g, respectively. The genetics of the mutant species should be examined in future studies to better understanding of the main factors causing color anomalies.","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133272872","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}
Pub Date : 2020-12-31DOI: 10.29329/ACTANATSCI.2020.313.4
P. Çelik
In this study, two experimental studies were conducted with Tubifex tubifex, which was adapted to laboratory conditions after being collected from nature. In the first experiment, the effect of some ground materials that can be used in controlled breeding conditions on the survival rates of T. tubifex was investigated. For this purpose, 7 different ground materials (trout mud, grain, vegetables, fish offal, cow liver, cow dung, and sand) were used. Initially, 20 T. tubifex were stocked for each repetition of the experimental groups consisting of these materials. At the end of the 45-day experiment, the number of alive individuals in the groups was compared. At the end of the experiment, alive individuals were observed in 3 groups including trout mud, cow dung, and sand. In the second experiment, the mineral substance compositions of living T. tubifex samples collected from nature were compared with the mineral substance compositions of alive individuals kept at different water temperatures (14, 16, 18, 20, 22, 24, 26, 28oC) for 90 days. In terms of magnesium, potassium, iron, copper, and zinc, statistically differences were found between the values measured at the beginning and at the end of the experiment. At the beginning of the experiment, while magnesium values tended to decrease in some groups, it increased in other groups. At the end of the experiment, it was determined that the potassium level was lower in all groups. At the end of the experiment, it was observed that the iron, copper, and zinc values were much higher than the values at the beginning of the experiment. Çelik (2020) Acta Natura et Scientia 1(1): 24-35 25 Aydınlık/Karanlık Fotoperiyot Şartlarında Farklı Zemin Materyallerinin Tubifex tubifex (Müller, 1774)’in Hayatta Kalma Oranına Etkisi ve Mineral
{"title":"The Effect of Different Ground Materials on the Survival Rate of Tubifex tubifex (Müller, 1774) under Light/Dark Photoperiod Conditions and Mineral Matter Composition","authors":"P. Çelik","doi":"10.29329/ACTANATSCI.2020.313.4","DOIUrl":"https://doi.org/10.29329/ACTANATSCI.2020.313.4","url":null,"abstract":"In this study, two experimental studies were conducted with Tubifex tubifex, which was adapted to laboratory conditions after being collected from nature. In the first experiment, the effect of some ground materials that can be used in controlled breeding conditions on the survival rates of T. tubifex was investigated. For this purpose, 7 different ground materials (trout mud, grain, vegetables, fish offal, cow liver, cow dung, and sand) were used. Initially, 20 T. tubifex were stocked for each repetition of the experimental groups consisting of these materials. At the end of the 45-day experiment, the number of alive individuals in the groups was compared. At the end of the experiment, alive individuals were observed in 3 groups including trout mud, cow dung, and sand. In the second experiment, the mineral substance compositions of living T. tubifex samples collected from nature were compared with the mineral substance compositions of alive individuals kept at different water temperatures (14, 16, 18, 20, 22, 24, 26, 28oC) for 90 days. In terms of magnesium, potassium, iron, copper, and zinc, statistically differences were found between the values measured at the beginning and at the end of the experiment. At the beginning of the experiment, while magnesium values tended to decrease in some groups, it increased in other groups. At the end of the experiment, it was determined that the potassium level was lower in all groups. At the end of the experiment, it was observed that the iron, copper, and zinc values were much higher than the values at the beginning of the experiment. Çelik (2020) Acta Natura et Scientia 1(1): 24-35 25 Aydınlık/Karanlık Fotoperiyot Şartlarında Farklı Zemin Materyallerinin Tubifex tubifex (Müller, 1774)’in Hayatta Kalma Oranına Etkisi ve Mineral","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124935917","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}
Pub Date : 2020-12-31DOI: 10.29329/ACTANATSCI.2020.313.1
N. Çiftçi, M. Shaiek, D. Ayas
A total of two cuttlefish species belonging to the families of Sepiidae were identified. The others were represented by the families of Sepiolidae, Octopodidae, Bathypolypodidae, and Ommastrephidae.
共鉴定出墨鱼2种，属乌贼科。其余分别为海蛸科、章鱼科、深足科和巨足科。
{"title":"Some Deep-Sea Cephalopods from the Northeastern Mediterranean Sea (Mersin Bay, Turkey)","authors":"N. Çiftçi, M. Shaiek, D. Ayas","doi":"10.29329/ACTANATSCI.2020.313.1","DOIUrl":"https://doi.org/10.29329/ACTANATSCI.2020.313.1","url":null,"abstract":"A total of two cuttlefish species belonging to the families of Sepiidae were identified. The others were represented by the families of Sepiolidae, Octopodidae, Bathypolypodidae, and Ommastrephidae.","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121909163","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}
Pub Date : 2020-12-31DOI: 10.29329/ACTANATSCI.2020.313.8
Ö. Cengiz, Ş. Paruğ
{"title":"The Northernmost Confirmation of the Occurrence of Parrotfish (Sparisoma cretense Linnaeus, 1758) in the Eastern Mediterranean With Its First Record From Saros Bay (Northern Aegean Sea, Turkey)","authors":"Ö. Cengiz, Ş. Paruğ","doi":"10.29329/ACTANATSCI.2020.313.8","DOIUrl":"https://doi.org/10.29329/ACTANATSCI.2020.313.8","url":null,"abstract":"","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115481291","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}
Pub Date : 2020-12-31DOI: 10.29329/ACTANATSCI.2020.313.6
Musavver Alageyik, N. Çiftçi, D. Ayas
{"title":"Seafood Consumption Preferences of University Student and Factors Affecting Preferences: The Case of Mersin University","authors":"Musavver Alageyik, N. Çiftçi, D. Ayas","doi":"10.29329/ACTANATSCI.2020.313.6","DOIUrl":"https://doi.org/10.29329/ACTANATSCI.2020.313.6","url":null,"abstract":"","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132702920","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}
Pub Date : 2020-12-31DOI: 10.29329/ACTANATSCI.2020.313.2
O. Erken, B. Kızılkaya, Aytaç Altın, H. Ayyıldız
Nowadays, it is known that many vegetables and fruits can be obtained longer-lasting products with drying methods. Therefore, dried fruits are offered for consumption in Turkey. In the present study, it was investigated fat and protein contents on dried apple and pear chips. According to the results, the amount of fat and apple chips was determined as 0.3% and 0.2%, respectively. On the other hand, the protein amount of apple and pear chips was found to be 3.84% and 3.58%, respectively. Consequently, it can be said that dried fruits can be consumed as a dietary food in terms of a low amount of fat and consumable protein.
{"title":"Determination of Protein and Fat Amounts in Dried Apple and Pear Chips","authors":"O. Erken, B. Kızılkaya, Aytaç Altın, H. Ayyıldız","doi":"10.29329/ACTANATSCI.2020.313.2","DOIUrl":"https://doi.org/10.29329/ACTANATSCI.2020.313.2","url":null,"abstract":"Nowadays, it is known that many vegetables and fruits can be obtained longer-lasting products with drying methods. Therefore, dried fruits are offered for consumption in Turkey. In the present study, it was investigated fat and protein contents on dried apple and pear chips. According to the results, the amount of fat and apple chips was determined as 0.3% and 0.2%, respectively. On the other hand, the protein amount of apple and pear chips was found to be 3.84% and 3.58%, respectively. Consequently, it can be said that dried fruits can be consumed as a dietary food in terms of a low amount of fat and consumable protein.","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"58 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129682261","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}
Pub Date : 2020-12-31DOI: 10.29329/ACTANATSCI.2020.313.3
Mısra Bakan, N. Çiftçi, D. Ayas
The seasonal changes in the total lipid and fatty acid profile of Pomadasys stridens, which were caught from Mersin Bay, were examined. Total lipid changes were found as 4.09%, 7.54%, 2.56%, and 1.81% in spring, summer, autumn, and winter seasons, respectively. A total of 30 fatty acids were defined in the muscle tissue by GC analysis. Among these, the major fatty acids are saturated fatty acids such as (SFA) palmitic acid (C16:0) and stearic acid (C18:0), monounsaturated fatty acids as oleic acid (C18:1n9c) and 11docosenoic acid (C22:1n11), and polyunsaturated fatty acids as eicosapentaenoic acid (C20:5n3), and docosahexaenoic acid (C22:6n3). Palmitic acid and stearic acid varied in the range of 16.92-22.74%, and 8.0613.86%; and they were found at the level of 297.82-1567.14 mg/100g and 182.49555.46 mg/100g, respectively. Oleic acid and 11-docosenoic acid varied in the range11.54-21.32% and 2.99-4.98%, and they were determined to range 251.201436.89 mg/100g and 72.56-206.06 mg/100g, respectively. Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) varied in the range of 3.58-5.45% and 5.57-13.42%; the levels of EPA and DHA were found 55.27-324.59 mg/100g and 153.12-492.90 mg/100g, respectively. TheΣn3, Σn6, Σn9 fatty acid levels of P. stridens changed between 10.65-19.41%, 3.45-4.50%, 12.59-22.72%; and they were found 233.75-733.95 mg/100g, 68.40-237.76 mg/100g, 271.12-1531.99 mg/100g respectively. The change intervals of the atherogenicity index (Ai) and thrombogenicity index (Ti) levels during the year were determined as 0.32-0.42% and 0.39-0.51%, respectively. Bakan et al. (2020) Acta Natura et Scientia 1(1): 12-23
{"title":"Seasonal Changes in the Lipid and Fatty Acid Profile of Pomadasys stridens (Forsskål, 1775) Caught from Mersin Bay","authors":"Mısra Bakan, N. Çiftçi, D. Ayas","doi":"10.29329/ACTANATSCI.2020.313.3","DOIUrl":"https://doi.org/10.29329/ACTANATSCI.2020.313.3","url":null,"abstract":"The seasonal changes in the total lipid and fatty acid profile of Pomadasys stridens, which were caught from Mersin Bay, were examined. Total lipid changes were found as 4.09%, 7.54%, 2.56%, and 1.81% in spring, summer, autumn, and winter seasons, respectively. A total of 30 fatty acids were defined in the muscle tissue by GC analysis. Among these, the major fatty acids are saturated fatty acids such as (SFA) palmitic acid (C16:0) and stearic acid (C18:0), monounsaturated fatty acids as oleic acid (C18:1n9c) and 11docosenoic acid (C22:1n11), and polyunsaturated fatty acids as eicosapentaenoic acid (C20:5n3), and docosahexaenoic acid (C22:6n3). Palmitic acid and stearic acid varied in the range of 16.92-22.74%, and 8.0613.86%; and they were found at the level of 297.82-1567.14 mg/100g and 182.49555.46 mg/100g, respectively. Oleic acid and 11-docosenoic acid varied in the range11.54-21.32% and 2.99-4.98%, and they were determined to range 251.201436.89 mg/100g and 72.56-206.06 mg/100g, respectively. Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) varied in the range of 3.58-5.45% and 5.57-13.42%; the levels of EPA and DHA were found 55.27-324.59 mg/100g and 153.12-492.90 mg/100g, respectively. TheΣn3, Σn6, Σn9 fatty acid levels of P. stridens changed between 10.65-19.41%, 3.45-4.50%, 12.59-22.72%; and they were found 233.75-733.95 mg/100g, 68.40-237.76 mg/100g, 271.12-1531.99 mg/100g respectively. The change intervals of the atherogenicity index (Ai) and thrombogenicity index (Ti) levels during the year were determined as 0.32-0.42% and 0.39-0.51%, respectively. Bakan et al. (2020) Acta Natura et Scientia 1(1): 12-23","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115286369","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}
Pub Date : 2020-12-19DOI: 10.29329/ACTANATSCI.2020.313.10
S. Berber, S. Akhan, Yusuf Bektaş, Gokhan Kalayci
{"title":"Meat yield and length-weight relationship of freshwater crayfish (Pontastacus leptodactylus (Eschscholtz, 1823)) population in nine different inland water resources in Turkey","authors":"S. Berber, S. Akhan, Yusuf Bektaş, Gokhan Kalayci","doi":"10.29329/ACTANATSCI.2020.313.10","DOIUrl":"https://doi.org/10.29329/ACTANATSCI.2020.313.10","url":null,"abstract":"","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122969646","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}
Pub Date : 2020-12-19DOI: 10.29329/ACTANATSCI.2020.313.11
Ş. Paruğ, Ö. Cengiz
{"title":"The Maximum Length Record of the White Seabream (Diplodus sargus Linnaeus, 1758) for the Aegean Sea","authors":"Ş. Paruğ, Ö. Cengiz","doi":"10.29329/ACTANATSCI.2020.313.11","DOIUrl":"https://doi.org/10.29329/ACTANATSCI.2020.313.11","url":null,"abstract":"","PeriodicalId":142687,"journal":{"name":"Acta Natura et Scientia","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122955245","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}
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