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Sri Lanka Journal of Aquatic Sciences最新文献

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Present status of smoked fish processing at Mahakanadarawa reservoir in Mihintale, Sri Lanka. 斯里兰卡米欣塔莱Mahakanadarawa水库熏鱼加工现状。
Sri Lanka Journal of Aquatic Sciences Pub Date : 2022-03-21 DOI: 10.4038/sljas.v27i1.7594
R. G. D. R. Jayawickrama, A. Wanasinghe, U. Jayawardena
{"title":"Present status of smoked fish processing at Mahakanadarawa reservoir in Mihintale, Sri Lanka.","authors":"R. G. D. R. Jayawickrama, A. Wanasinghe, U. Jayawardena","doi":"10.4038/sljas.v27i1.7594","DOIUrl":"https://doi.org/10.4038/sljas.v27i1.7594","url":null,"abstract":"","PeriodicalId":21784,"journal":{"name":"Sri Lanka Journal of Aquatic Sciences","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80224659","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
Length weight relationships of fish species collected after impoundment of the Three Gorges Reservoir (TGR) in China; a study carried out in the upper Yangtze River 三峡水库蓄水后鱼类的长权关系在长江上游进行的一项研究
Sri Lanka Journal of Aquatic Sciences Pub Date : 2022-03-21 DOI: 10.4038/sljas.v27i1.7597
H. Perera, Tanglin Zhang, Jing Yuan, Shawoen Ye, Chuanbo Guo, Jiashou Liu
{"title":"Length weight relationships of fish species collected after impoundment of the Three Gorges Reservoir (TGR) in China; a study carried out in the upper Yangtze River","authors":"H. Perera, Tanglin Zhang, Jing Yuan, Shawoen Ye, Chuanbo Guo, Jiashou Liu","doi":"10.4038/sljas.v27i1.7597","DOIUrl":"https://doi.org/10.4038/sljas.v27i1.7597","url":null,"abstract":"","PeriodicalId":21784,"journal":{"name":"Sri Lanka Journal of Aquatic Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83103884","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 preservative roles of barley extract on physico-chemical treats of common carp (Cyprinus carpio L.) fillets under refrigerated condition 大麦提取物对冷藏条件下鲤鱼鱼片理化处理的保鲜作用
Sri Lanka Journal of Aquatic Sciences Pub Date : 2022-01-01 DOI: 10.4038/sljas.v27i1.7593
K. Namiq, V. Ahmed, S. Mahmood, N. M. Abdulrahman, A. A. Sadraddin, Sarhang Noori Ezzat
{"title":"The preservative roles of barley extract on physico-chemical treats of common carp (Cyprinus carpio L.) fillets under refrigerated condition","authors":"K. Namiq, V. Ahmed, S. Mahmood, N. M. Abdulrahman, A. A. Sadraddin, Sarhang Noori Ezzat","doi":"10.4038/sljas.v27i1.7593","DOIUrl":"https://doi.org/10.4038/sljas.v27i1.7593","url":null,"abstract":"","PeriodicalId":21784,"journal":{"name":"Sri Lanka Journal of Aquatic Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83195297","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
Constraints in culture-based fisheries of Sri Lanka and strategies for future development 斯里兰卡以养殖为基础的渔业的制约因素和未来发展战略
Sri Lanka Journal of Aquatic Sciences Pub Date : 2021-09-15 DOI: 10.4038/sljas.v26i2.7589
W. Wijenayake, M. Najim, Upali Sarath Amarasinghe
{"title":"Constraints in culture-based fisheries of Sri Lanka and strategies for future development","authors":"W. Wijenayake, M. Najim, Upali Sarath Amarasinghe","doi":"10.4038/sljas.v26i2.7589","DOIUrl":"https://doi.org/10.4038/sljas.v26i2.7589","url":null,"abstract":"","PeriodicalId":21784,"journal":{"name":"Sri Lanka Journal of Aquatic Sciences","volume":"186 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80625376","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
Assessing genotoxic potential of petroleum refinery wastewater using biomarkers of laboratory exposed and field captured fishes 利用实验室暴露和野外捕获鱼类的生物标志物评估炼油废水的遗传毒性潜力
Sri Lanka Journal of Aquatic Sciences Pub Date : 2021-09-15 DOI: 10.4038/sljas.v26i2.7590
Nadeeka R. Weerakkodige, C. K. Hemachandra, A. Pathiratne
{"title":"Assessing genotoxic potential of petroleum refinery wastewater using biomarkers of laboratory exposed and field captured fishes","authors":"Nadeeka R. Weerakkodige, C. K. Hemachandra, A. Pathiratne","doi":"10.4038/sljas.v26i2.7590","DOIUrl":"https://doi.org/10.4038/sljas.v26i2.7590","url":null,"abstract":"Petroleum refinery wastes contain mixtures of toxic compounds including Polycyclic Aromatic Hydrocarbons (PAH) which may pose genotoxic threats to the biota.  The objective of the present study was to assess the genotoxic potential of wastewaters of the petroleum refinery at Sapugaskanda, Sri Lanka using erythrocytic micronuclei and nuclear abnormalities as genotoxic biomarkers in the fish Oreochromis niloticus exposed to the refinery wastewater under controlled laboratory conditions and in the field captured fishes from the canals close to the refinery. Erythrocytic micronuclei and nuclear abnormalities in the peripheral blood were evaluated using cytogenetic tests. Patterns of fluorescent aromatic compounds in the fish bile were also examined using fixed fluorescence spectrometry to assess potential PAH exposure. Erythrocytic micronuclei, nuclear buds and notched nuclei in the peripheral blood were highly induced (P","PeriodicalId":21784,"journal":{"name":"Sri Lanka Journal of Aquatic Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81404790","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
Diversity and distribution of freshwater molluscan fauna in reservoirs and headwater streams of the Kala Oya river basin in Sri Lanka 斯里兰卡Kala Oya河流域水库和源头溪流中淡水软体动物的多样性和分布
Sri Lanka Journal of Aquatic Sciences Pub Date : 2021-09-15 DOI: 10.4038/sljas.v26i2.7588
S. N. Weerakoon, W. Chandrasekara, Upali Sarath Amarasinghe
{"title":"Diversity and distribution of freshwater molluscan fauna in reservoirs and headwater streams of the Kala Oya river basin in Sri Lanka","authors":"S. N. Weerakoon, W. Chandrasekara, Upali Sarath Amarasinghe","doi":"10.4038/sljas.v26i2.7588","DOIUrl":"https://doi.org/10.4038/sljas.v26i2.7588","url":null,"abstract":"In this study, the variation of aquatic molluscan diversity concerning seasonal water level fluctuations (WLF) and sediment texture was investigated in some perennial irrigation reservoirs and the associated head headwater streams in the Kala Oya river basin in Sri Lanka. Altogether 11,752 molluscan specimens belonging to 10 gastropod taxa (96.6%) and 2 bivalve taxa (3.4%) were identified. Of these, 11,282 specimens (96.0%) were from reservoir sampling sites and the remainder 470 (4.0%) was from the associated headwater streams. Of the gastropods, the individuals of the genus Melanoides showed the highest distribution index (DI) of 0.75 followed by Bellamya (DI = 0.63) and Thiara (DI = 0.60). The DI of the gastropod molluscs showed a significant positive relationship with their shell size (p","PeriodicalId":21784,"journal":{"name":"Sri Lanka Journal of Aquatic Sciences","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78367447","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
Muscle pigmentation of Nile tilapia (Oreochromis niloticus) fed on crude palm oil incorporated fish feed 尼罗罗非鱼(Oreochromis niloticus)饲喂含粗棕榈油的鱼饲料后肌肉色素沉着
Sri Lanka Journal of Aquatic Sciences Pub Date : 2021-09-15 DOI: 10.4038/sljas.v26i2.7591
D. Wickramanayake, N. Kalutharage, P. Cumaranatunga
{"title":"Muscle pigmentation of Nile tilapia (Oreochromis niloticus) fed on crude palm oil incorporated fish feed","authors":"D. Wickramanayake, N. Kalutharage, P. Cumaranatunga","doi":"10.4038/sljas.v26i2.7591","DOIUrl":"https://doi.org/10.4038/sljas.v26i2.7591","url":null,"abstract":"The effects of diets containing crude palm oil on muscle pigmentation and deposition of carotenoids in tilapia (Oreochromis niloticus) was studied. A total of 135 advanced fingerlings with an average body weight and standard length of 9.11±4.78 g and 8.1±0.8 cm, respectively were stocked in tanks for 8 weeks and fed with formulated diets containing crude palm oil (CPO) as the oil component. Weight, standard length, and carotenoid levels in fish were measured biweekly. Muscles of fish fed with the control diet and CPO incorporated diets had carotenoid levels of 0.14±0.03 µg/g and 0.28±0.01 µg/g, respectively. Skin of the fish had carotenoid levels of 3.24±0.02 µg/g in the control and 6.06±0.03 µg/g in the treatment. According to the results 3% CPO incorporated diet had a significant effect on enhancing flesh colour in tilapia. The sensory evaluation indicated that the flesh of CPO fed tilapia fillets were more attractive than the fillets of fish fed control diet. CPO oil is recommended as a natural food colourant for improving flesh quality of Nile tilapia fillets.","PeriodicalId":21784,"journal":{"name":"Sri Lanka Journal of Aquatic Sciences","volume":"73 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78126966","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
Retirement of a distinguished researcher - Prof. Upali S. Amarasinghe 杰出研究员Upali S. Amarasinghe教授退休
Sri Lanka Journal of Aquatic Sciences Pub Date : 2021-03-15 DOI: 10.4038/SLJAS.V26I1.7580
M. Pathmalal
{"title":"Retirement of a distinguished researcher - Prof. Upali S. Amarasinghe","authors":"M. Pathmalal","doi":"10.4038/SLJAS.V26I1.7580","DOIUrl":"https://doi.org/10.4038/SLJAS.V26I1.7580","url":null,"abstract":"","PeriodicalId":21784,"journal":{"name":"Sri Lanka Journal of Aquatic Sciences","volume":"26 1","pages":"1"},"PeriodicalIF":0.0,"publicationDate":"2021-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87364738","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
Embryonic and larval development in the freshwater angelfish (Pterophyllum scalare) 淡水天使鱼(Pterophyllum scalare)的胚胎和幼虫发育
Sri Lanka Journal of Aquatic Sciences Pub Date : 2021-03-15 DOI: 10.4038/SLJAS.V26I1.7586
K. G. D. D. Thilakarathne, G. Hirimuthugoda, P. H. T. Lakkana, Shalika Kumburegama
{"title":"Embryonic and larval development in the freshwater angelfish (Pterophyllum scalare)","authors":"K. G. D. D. Thilakarathne, G. Hirimuthugoda, P. H. T. Lakkana, Shalika Kumburegama","doi":"10.4038/SLJAS.V26I1.7586","DOIUrl":"https://doi.org/10.4038/SLJAS.V26I1.7586","url":null,"abstract":"The freshwater angelfish, Pterophyllum scalare like many other cichlids show parental care of embryos and larvae. This study was carried out to investigate the embryonic development of P. scalare, which shows biparental care and substrate brooding. During the study adult reproductive behavior and parental care was observed. Once the eggs were fertilized upon spawning, the early and later embryonic stages were observed, documented and various embryo length measurements were analyzed to characterize the developmental pattern in this species. Whole mounts and bone and cartilage measurements of acid free double stained larvae were analyzed to further understand the developmental rates in the hatched larvae. The developmental events were compared with those of other documented cichlid species as well as with the zebrafish, Danio rerio (Family Cyprinidae), which does not show parental care. After fertilization, cleavage division of the P. scalare embryo starts 1.30 hours post fertilization (hpf). On average, cleavage, blastula, gastrula, segmentation and pharyngula periods of embryogenesis are observed for approximately 3 ½, 11 ½, 9 ½, 36 and 12 hours respectively. Ultimately, P. scalare embryos hatched around 72 (hpf). Head Length, dorsal, caudal and anal fins show positive allometric growth while body depth and digestive tract show almost isometric growth. The study highlights that similar to a few other studied cichlids, P. scalare embryogenesis and larval development occur at a slower rate of development compared to D. rerio. In cichlids including P. scalare, parental care may allow these embryos the luxury of developing at a slower rate whereas the lack thereof for D. rerio embryos may necessitate faster development.","PeriodicalId":21784,"journal":{"name":"Sri Lanka Journal of Aquatic Sciences","volume":"41 1","pages":"25"},"PeriodicalIF":0.0,"publicationDate":"2021-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73885281","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
What drives the dominance and distribution of Cyanobacteria and Dinoflagellata in reservoirs of Sri Lanka? 是什么驱动蓝藻和鞭毛藻在斯里兰卡水库的优势和分布?
Sri Lanka Journal of Aquatic Sciences Pub Date : 2021-03-15 DOI: 10.4038/SLJAS.V26I1.7585
P. Senanayake, S. Kumburegama, C. Wijesundara, S. Yatigammana
{"title":"What drives the dominance and distribution of Cyanobacteria and Dinoflagellata in reservoirs of Sri Lanka?","authors":"P. Senanayake, S. Kumburegama, C. Wijesundara, S. Yatigammana","doi":"10.4038/SLJAS.V26I1.7585","DOIUrl":"https://doi.org/10.4038/SLJAS.V26I1.7585","url":null,"abstract":"Frequent records and health concerns in recent times have directed more attention on freshwater cyanobacterial and dinoflagellate blooms in Sri Lanka. Physico-chemical factors influencing phytoplankton growth are still under debate. This necessitates understanding environmental trends governing the dominance and distribution of algal blooms. Hence this study aimed to assess the dominance of Cyanobacteria and Dinoflagellata in reservoirs of Sri Lanka covering the three major climatic regions of the country, the Wet, Intermediate and Dry Zones. Plankton samples were collected using open type 20 µm plankton net and identified using standard phytoplankton keys. Ninety-one species belonging to three phyla of phytoplankton were identified. Phylum Chlorophyta represented the highest species number followed by Bacillariophyta and Cyanophyta. Fourteen genera of Cyanobacteria were recorded and eleven of them were potentially toxigenic. The widest distribution was shown by Chroococcus and Merismopedia. Cylindrospermopsis raciborskii with the highest mean relative abundance was recorded in Intermediate and Dry Zone reservoirs. Peridinium aciculiferum was the only dinoflagellate species recorded during the study with the highest abundance in the Isinbessagala rocky pond. Except sixteen reservoirs which were mesoeutrophic, all the other studied reservoirs were found to be either eutrophic or hypereutrophic. Iranamadu tank recorded the highest TP concentration (236 µg L-1) value. NO3-:TP ratio revealed the phosphate limited conditions in Wet and Dry Zone reservoirs whereas N was a limited factor in Intermediate Zone. Canonical Correspondence Analysis (CCA) results revealed that Secchi depth and area of water spread are important in determining both site and species variations in reservoirs of Sri Lanka.","PeriodicalId":21784,"journal":{"name":"Sri Lanka Journal of Aquatic Sciences","volume":"190 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74179847","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
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