Pub Date : 2017-12-29DOI: 10.5376/IJMS.2017.07.0049
Khaled Al-Khafaji, I. Abdul-sahib, S. G. Ajeel
Specimens of the epialtid crab. Hyastenus hilgendorfi De Man, 1887 were collected from intertidal and shallow subtidal of the Rass Al-Beshaa area of the Shatt Al-Arab in Al-Faw City, NW-Arabian Gulf. Specimens were collected by trawl net during November 2016. This represents the first record of the genus Hyastenus White, 1847 for Iraqi coast. The specimens are diagnosed and the taxonomy of the genus discussed.
鳞蟹标本。Hyastenus hilgendorfi De Man, 1887年在西北阿拉伯湾faw市阿拉伯河Rass Al-Beshaa地区的潮间带和浅层潮下采集。2016年11月采用拖网采集标本。这是1847年伊拉克海岸首次记录到的Hyastenus White属。对标本进行了诊断，并讨论了属的分类。
{"title":"The Epialtid Crab: Hyastenus hilgendorfi (De Man, 1887) A New Spider Crab Record from Iraqi Coast, NW-Arabian Gulf","authors":"Khaled Al-Khafaji, I. Abdul-sahib, S. G. Ajeel","doi":"10.5376/IJMS.2017.07.0049","DOIUrl":"https://doi.org/10.5376/IJMS.2017.07.0049","url":null,"abstract":"Specimens of the epialtid crab. Hyastenus hilgendorfi De Man, 1887 were collected from intertidal and shallow subtidal of the Rass Al-Beshaa area of the Shatt Al-Arab in Al-Faw City, NW-Arabian Gulf. Specimens were collected by trawl net during November 2016. This represents the first record of the genus Hyastenus White, 1847 for Iraqi coast. The specimens are diagnosed and the taxonomy of the genus discussed.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"70 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77995219","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 : 2017-12-15DOI: 10.5376/IJMS.2017.07.0047
A. Abdullah, F. Al-Zaidy, F. Habbeb
A total of 114 (76 female and 38 male) specimens of Shelig Leuciscus vorax were monthly collected from Al-Huwaiza marsh southern Iraq from November 2016 to October 2017. The samples were caught utilizing gill net and electrofishing. The highest values of gonadosomatic index (GSI) were found in February (18.35 and 5.33 for female and male respectively). Only mature individuals of L. vorax female were used to estimate absolute-relative fecundity and measure eggs diameters of very ripe gonads. Absolute fecundity ranged from 77612 eggs at 56 cm in total length (1672 g) body weight to 378391 eggs 79.5 cm in total length and (5001 g) boy weight. Highly significant differences relationships were observed among to total length, body weight and reproductive parameters. The relative condition factor differs from 0.85±0.11 in October to 1.37±0.09 in June. The results showed one spawning peak on reproductive strategy of represented species, which is preceding other species of fish to enables the small fish of L. vorax feeding on larvae and other small fish species in assemblage.
2016年11月至2017年10月，在伊拉克南部Al-Huwaiza沼泽每月采集雪利格白斑蝶114只(雌性76只，雄性38只)。采用刺网和电钓法捕获。雄性和雌性的性腺指数(GSI)在2月份最高，分别为18.35和5.33。本研究仅利用成熟雌虫进行绝对相对繁殖力估算和极成熟性腺卵径测量。绝对繁殖力从全长56 cm (1672 g)体重的77612个卵到全长79.5 cm (5001 g)体重的378391个卵不等。体长、体重和繁殖参数之间存在极显著的差异关系。相对条件因子10月为0.85±0.11,6月为1.37±0.09。结果表明，代表性鱼类在繁殖策略上有一个产卵高峰，先于其他鱼类出现，使得vorax的小鱼能够以幼虫和其他鱼群的小鱼为食。
{"title":"Reproductive Characteristics of Leuciscus vorax (Heckel, 1843) from Al-Huwaiza Marshes Southern Iraq","authors":"A. Abdullah, F. Al-Zaidy, F. Habbeb","doi":"10.5376/IJMS.2017.07.0047","DOIUrl":"https://doi.org/10.5376/IJMS.2017.07.0047","url":null,"abstract":"A total of 114 (76 female and 38 male) specimens of Shelig Leuciscus vorax were monthly collected from Al-Huwaiza marsh southern Iraq from November 2016 to October 2017. The samples were caught utilizing gill net and electrofishing. The highest values of gonadosomatic index (GSI) were found in February (18.35 and 5.33 for female and male respectively). Only mature individuals of L. vorax female were used to estimate absolute-relative fecundity and measure eggs diameters of very ripe gonads. Absolute fecundity ranged from 77612 eggs at 56 cm in total length (1672 g) body weight to 378391 eggs 79.5 cm in total length and (5001 g) boy weight. Highly significant differences relationships were observed among to total length, body weight and reproductive parameters. The relative condition factor differs from 0.85±0.11 in October to 1.37±0.09 in June. The results showed one spawning peak on reproductive strategy of represented species, which is preceding other species of fish to enables the small fish of L. vorax feeding on larvae and other small fish species in assemblage.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86308978","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 : 2017-12-15DOI: 10.5376/ijms.2017.07.0046
Menusha umayangani, K. Perera
Mangrove ecosystems perform number of important ecological functions and provide a wide range of services at the local or national level and provide a unique combination of both organic matter production and sequestration, which is different from other coastal ecosystems. Mangroves are extensively used to extract twigs and branches for the construction of “Brush piles”, the predominant fishing devices in the Negombo estuary, Sri Lanka, believed to have one major impact on the vegetation structure followed by the changes in primary productivity and carbon assimilation capacity of the ecosystem. Present study was conducted with an objective of quantify and relationships between the vegetation structure and Gross Primary Productivity (GPP) of disturbed and natural mangrove stands in the Negombo estuary. Vegetation structural parameters were gathered according to the standard procedures and the measurement of Photosynthetically Active Radiation (PAR) used to calculate the Leaf Area Index (LAI) followed by the GPP. Highest values of vegetation structural parameters, LAI and GPP were recorded from estuarine waterfront and decreased with landwards, which indicated more active vegetation is near by the estuarine waterfront. Comparatively, vegetation structural/structural complexity (CI) and GPP/carbon assimilation capacity were superior in undisturbed/ natural mangrove stands (31.86-36.65 Mg ha -1 y -1 ) than that was recorded in disturbed/ replanted mangrove areas (26.42-35.25 Mg ha -1 y -1 ) at Negombo estuary. Statistically significant liner relationships (P<0.01) were revealed between vegetation structural complexity and GPP (CI=.0.498 GPP +28.208); structural complexity and Leaf Area Index (CI=0.0956 LAI +5.3551).
红树林生态系统发挥了许多重要的生态功能，在地方或国家一级提供了广泛的服务，并提供了与其他沿海生态系统不同的有机物质生产和封存的独特组合。红树林被广泛用于提取树枝和树枝，用于建造“刷桩”，这是斯里兰卡尼甘布河口的主要捕鱼设备，据信对植被结构产生重大影响，其次是生态系统初级生产力和碳同化能力的变化。本文研究了尼甘布河口受干扰和自然红树林分植被结构与总初级生产力(GPP)的关系。根据标准程序收集植被结构参数，并测量光合有效辐射(PAR)，计算叶面积指数(LAI)，然后计算GPP。植被结构参数、LAI和GPP在河口滨水处最高，且随向陆方向减小，表明靠近河口滨水处植被较为活跃。相比之下，尼甘布河口未受干扰/自然红树林林分植被结构/结构复杂性(CI)和GPP/碳同化能力(31.86 ~ 36.65 Mg ha -1 y -1)优于受干扰/人工造林红树林林分植被结构/结构复杂性(CI)和GPP/碳同化能力(26.42 ~ 35.25 Mg ha -1 y -1)。植被结构复杂性与GPP呈显著线性关系(CI= 0.0.498 GPP +28.208)， P<0.01;叶面积指数(CI=0.0956 LAI +5.3551)。
{"title":"Contribution of Vegetation Structure on Carbon Assimilation Capacity of Mangrove Ecosystem: A Case Study from Negombo Estuary, Sri Lanka","authors":"Menusha umayangani, K. Perera","doi":"10.5376/ijms.2017.07.0046","DOIUrl":"https://doi.org/10.5376/ijms.2017.07.0046","url":null,"abstract":"Mangrove ecosystems perform number of important ecological functions and provide a wide range of services at the local or national level and provide a unique combination of both organic matter production and sequestration, which is different from other coastal ecosystems. Mangroves are extensively used to extract twigs and branches for the construction of “Brush piles”, the predominant fishing devices in the Negombo estuary, Sri Lanka, believed to have one major impact on the vegetation structure followed by the changes in primary productivity and carbon assimilation capacity of the ecosystem. Present study was conducted with an objective of quantify and relationships between the vegetation structure and Gross Primary Productivity (GPP) of disturbed and natural mangrove stands in the Negombo estuary. Vegetation structural parameters were gathered according to the standard procedures and the measurement of Photosynthetically Active Radiation (PAR) used to calculate the Leaf Area Index (LAI) followed by the GPP. Highest values of vegetation structural parameters, LAI and GPP were recorded from estuarine waterfront and decreased with landwards, which indicated more active vegetation is near by the estuarine waterfront. Comparatively, vegetation structural/structural complexity (CI) and GPP/carbon assimilation capacity were superior in undisturbed/ natural mangrove stands (31.86-36.65 Mg ha -1 y -1 ) than that was recorded in disturbed/ replanted mangrove areas (26.42-35.25 Mg ha -1 y -1 ) at Negombo estuary. Statistically significant liner relationships (P<0.01) were revealed between vegetation structural complexity and GPP (CI=.0.498 GPP +28.208); structural complexity and Leaf Area Index (CI=0.0956 LAI +5.3551).","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74105917","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 : 2017-12-08DOI: 10.5376/IJMS.2017.07.0045
S. Rasheed, J. Mustaquim
Two species of Portunid crabs namely Portunus pelagicus and P. sanguinolentus were examined for the presence of octolasmids which belong to four species; namely Octolasmis angulata (Aurivillius, 1894), O. cor (Aurivillius, 1894), O. lowei (Darwin, 1851), and O. tridens (Aurivillius, 1894). Number of infested P. sanguinolentus was 114 (10.8% of the total P. sanguinolentus ) while total number of octolasmids hosted by these crab was 5165. The average number of octolasmids found in the right and left gill chambers was 17.74 ± 37.22 S.D and 16.26 ± 38.85 S.D respectively, which is not different significantly (t = 0.265, α = 0.05). In P. pelagicus , 188 octolasmids were found in the gill chambers of 48 infested crabs. The average number of octolasmids found in the right and left branchial chambers was 2.38 ± 3.1 S.D and 1.54 ± 2.0 S.D, respectively, which is not significantly different (t = 1.48; α = 0.05).
{"title":"Pedunculate Barnacle Octolasmis (Cirripedia, Thoracica) on the Gills of Two Species of Portunid Crabs","authors":"S. Rasheed, J. Mustaquim","doi":"10.5376/IJMS.2017.07.0045","DOIUrl":"https://doi.org/10.5376/IJMS.2017.07.0045","url":null,"abstract":"Two species of Portunid crabs namely Portunus pelagicus and P. sanguinolentus were examined for the presence of octolasmids which belong to four species; namely Octolasmis angulata (Aurivillius, 1894), O. cor (Aurivillius, 1894), O. lowei (Darwin, 1851), and O. tridens (Aurivillius, 1894). Number of infested P. sanguinolentus was 114 (10.8% of the total P. sanguinolentus ) while total number of octolasmids hosted by these crab was 5165. The average number of octolasmids found in the right and left gill chambers was 17.74 ± 37.22 S.D and 16.26 ± 38.85 S.D respectively, which is not different significantly (t = 0.265, α = 0.05). In P. pelagicus , 188 octolasmids were found in the gill chambers of 48 infested crabs. The average number of octolasmids found in the right and left branchial chambers was 2.38 ± 3.1 S.D and 1.54 ± 2.0 S.D, respectively, which is not significantly different (t = 1.48; α = 0.05).","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82919897","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 : 2017-12-08DOI: 10.5376/IJMS.2017.07.0044
Felipe Muñoz-Felix, E. Barjau-González, Abril K. Romo-Piñera, J. López-Vivas
The San Ignacio lagoon is located inside the "Biosphere reserve El Vizcaino". The study of fish within coastal lagoon systems allows a better understanding of how these organisms are responsible for performing various activities that are necessary for the stability of the ecosystem. There is very general and outdated research of the ichthyofauna in the San Ignacio lagoon. In the present study, the structure of the fish community associated with soft bottoms and the ecological role of the most dominant species was analyzed. Six bimonthly samplings were carried out in 11 localities from April 2013 to April 2014 resulting in 66 replicates, each time an experimental trawl net was used to capture the organisms and physicochemical parameters were recorded. 2,887 organisms belonging to 26 families, 38 genera and 46 species were captured. There were significant differences in seasonal richness but not spatial richness, and there were no significant differences in diversity or evenness. According to the BVI, 12 species were the most biologically important.
{"title":"Variation of the Fish Community Associated with Soft Bottoms in a Coastal Lagoon on the Pacific Side of B.C.S, México","authors":"Felipe Muñoz-Felix, E. Barjau-González, Abril K. Romo-Piñera, J. López-Vivas","doi":"10.5376/IJMS.2017.07.0044","DOIUrl":"https://doi.org/10.5376/IJMS.2017.07.0044","url":null,"abstract":"The San Ignacio lagoon is located inside the \"Biosphere reserve El Vizcaino\". The study of fish within coastal lagoon systems allows a better understanding of how these organisms are responsible for performing various activities that are necessary for the stability of the ecosystem. There is very general and outdated research of the ichthyofauna in the San Ignacio lagoon. In the present study, the structure of the fish community associated with soft bottoms and the ecological role of the most dominant species was analyzed. Six bimonthly samplings were carried out in 11 localities from April 2013 to April 2014 resulting in 66 replicates, each time an experimental trawl net was used to capture the organisms and physicochemical parameters were recorded. 2,887 organisms belonging to 26 families, 38 genera and 46 species were captured. There were significant differences in seasonal richness but not spatial richness, and there were no significant differences in diversity or evenness. According to the BVI, 12 species were the most biologically important.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86796924","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 : 2017-11-10DOI: 10.5376/IJMS.2017.07.0043
M. Hendri, Rozirwan Rozirwan, R. Apri
The production of Gracilaria sp is still not optimal and there are some opportunities left for production improvement by developing methods that use depth level as a planting media. A vertikultur method using bag nets is more effective and has higher production levels. This research aims to solve problems in cultivating Gracilaria sp seaweed by doing field optimization. Seaweeds were planted as many as 40 points for each 10 levels depth (BRL); 0, 70, 140, 210, 280, 350, 420, 560, and 630 cm from the surface. Environment and seaweed parameters were measured weekly. This research measures daily and weekly growth rate, absolute growth, and the total production. The data were analyzed using Anota test and BNJ further test . The research result shows that physic-chemistry water parameter is suitable for cultivating Gracilaria sp . The lowest weekly growth rate occurred in level BRL 10 in the first week while gaining weight as much as 9.351 gram/week. The highest growth rate occurred in level BRL 4 on the sixth week while gaining weight as much as 32.25 gram/week. The biggest absolute growth occurred in level BRL 4 with 214.87 gram and the lowest occurred in level BRL 10 with 161.45 gram. The biggest absolute growth rate occurred in level BR1 4 while gaining weight as much as 139.87 gram from the original weight and the lowest occurred in level BRL10 with 86.45 gram from the original weight. The best daily growth rate occurred in level BRL 4 with a growth rate of 2.53%/day and the lowest occurred in BRL 10 with 1.84%/day. Total production of Gracilaria sp from level BR1 1 – BR1 10 is 74,840 gram. The biggest production was obtained from level BRL 4 with the production of 8595 gram and the lowest in BRL 10 with 6458 gram. According to the anova test result and beda nyata jujur (BNJ), it shows that depth level (BR1 1 – BR1 10) gave no influence towards the growth rate of Gracilaria sp in the water of Kelagian Island. The vertikultur method by making use of depth level is both feasible and profitable for seaweed cultivators with production level ten times bigger.
{"title":"Optimization of Cultivated Seaweed Land Gracilaria sp Using Vertikultur System","authors":"M. Hendri, Rozirwan Rozirwan, R. Apri","doi":"10.5376/IJMS.2017.07.0043","DOIUrl":"https://doi.org/10.5376/IJMS.2017.07.0043","url":null,"abstract":"The production of Gracilaria sp is still not optimal and there are some opportunities left for production improvement by developing methods that use depth level as a planting media. A vertikultur method using bag nets is more effective and has higher production levels. This research aims to solve problems in cultivating Gracilaria sp seaweed by doing field optimization. Seaweeds were planted as many as 40 points for each 10 levels depth (BRL); 0, 70, 140, 210, 280, 350, 420, 560, and 630 cm from the surface. Environment and seaweed parameters were measured weekly. This research measures daily and weekly growth rate, absolute growth, and the total production. The data were analyzed using Anota test and BNJ further test . The research result shows that physic-chemistry water parameter is suitable for cultivating Gracilaria sp . The lowest weekly growth rate occurred in level BRL 10 in the first week while gaining weight as much as 9.351 gram/week. The highest growth rate occurred in level BRL 4 on the sixth week while gaining weight as much as 32.25 gram/week. The biggest absolute growth occurred in level BRL 4 with 214.87 gram and the lowest occurred in level BRL 10 with 161.45 gram. The biggest absolute growth rate occurred in level BR1 4 while gaining weight as much as 139.87 gram from the original weight and the lowest occurred in level BRL10 with 86.45 gram from the original weight. The best daily growth rate occurred in level BRL 4 with a growth rate of 2.53%/day and the lowest occurred in BRL 10 with 1.84%/day. Total production of Gracilaria sp from level BR1 1 – BR1 10 is 74,840 gram. The biggest production was obtained from level BRL 4 with the production of 8595 gram and the lowest in BRL 10 with 6458 gram. According to the anova test result and beda nyata jujur (BNJ), it shows that depth level (BR1 1 – BR1 10) gave no influence towards the growth rate of Gracilaria sp in the water of Kelagian Island. The vertikultur method by making use of depth level is both feasible and profitable for seaweed cultivators with production level ten times bigger.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75277077","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 : 2017-10-20DOI: 10.5376/IJMS.2017.07.0041
Tariq H Y Al-Maliky
Breeding of shrimp Metapenaeus affinis in submersible cages (SC) and floating cages (FC). Grown were with an average initial weight of 2.350 ± 0.636 and 2.383 ± 0.400, which were fed on the industrial diet prepared for 45 days. Some growth measures as follows (FC and SC): weight increase (g) 1.880 ± 0.170 and 0.884 ± 0.011. Daily growth rate (% g/day) 0.042 ± 0.004 and 0.020 ± 0.001. Feed conversion rate 2.476 ± 0.487 and 1.462 ± 0.350, relative growth rate (%) 82.031 ± 14.993 and 38.008 ± 6.858. While its survival rate (%) was 90 ± 7.071 and 75 ± 7.071, all this respectively. Some environmental conditions measures were temperature (°C)= 27.667 ± 3.055, salinity (mg/l)=1.603 ± 0.329, pH=7.783 ± 0.226, dissolved oxygen (mg/l)= 6.863 ± 0.228. The results of the statistical analysis showed significant (P < 0.05) differences in FCR and in RGR between the shrimp cultured in the SC and FC, while there were no significant differences in the rates of daily growth and increase in weight and survival rates and weekly weight.
{"title":"Breeding of Shrimps Metapenaeus affinis (H. Milne Edwards, 1837) in Cages","authors":"Tariq H Y Al-Maliky","doi":"10.5376/IJMS.2017.07.0041","DOIUrl":"https://doi.org/10.5376/IJMS.2017.07.0041","url":null,"abstract":"Breeding of shrimp Metapenaeus affinis in submersible cages (SC) and floating cages (FC). Grown were with an average initial weight of 2.350 ± 0.636 and 2.383 ± 0.400, which were fed on the industrial diet prepared for 45 days. Some growth measures as follows (FC and SC): weight increase (g) 1.880 ± 0.170 and 0.884 ± 0.011. Daily growth rate (% g/day) 0.042 ± 0.004 and 0.020 ± 0.001. Feed conversion rate 2.476 ± 0.487 and 1.462 ± 0.350, relative growth rate (%) 82.031 ± 14.993 and 38.008 ± 6.858. While its survival rate (%) was 90 ± 7.071 and 75 ± 7.071, all this respectively. Some environmental conditions measures were temperature (°C)= 27.667 ± 3.055, salinity (mg/l)=1.603 ± 0.329, pH=7.783 ± 0.226, dissolved oxygen (mg/l)= 6.863 ± 0.228. The results of the statistical analysis showed significant (P < 0.05) differences in FCR and in RGR between the shrimp cultured in the SC and FC, while there were no significant differences in the rates of daily growth and increase in weight and survival rates and weekly weight.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84119243","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 : 2017-10-20DOI: 10.5376/ijms.2017.07.0042
F. N. Al-Kanany, Satar A. Gmais, A. Maki, Asaad M. R. Al-Taee
Four bacterial strains were isolated from Khor Al-Zubair channel, southern Iraq based on a high growth rate on crude oil and on hydrocarbon degradation ability. The strains were preliminarily identified based on morphological observation, and by the Vitek II system. The isolates were identified as Brevundimonas diminuta /vesicularis , Vibrio vulnificus , Sphingomonas paucimobilis and Ochrobactrum anthropic . However, the ability of these strains to utilize crude oil (0.25%; 0.5%; 1% and 2% v/v) varied both in rates of utilization and in growth profiles. The components of crude oil degraded by the isolates were determined by capillary gas chromatography. Sphingomonas paucimobilis and Vibrio vulnificus were the most effective bacteria degrade PAH on seventh day incubation, especially in concentration 2.0 mg/l (97.39% and 84.23%) respectively, meanwhile, Brevundimonas diminuta/ vesicularis was highly effective degrade PAH (73.41% and 62.08%) in concentration 1.0 and 0.5 mg/l, respectively. On the other hand, Ochrobactrum anthropi was the lowest in all concentrations.
{"title":"Estimation of Bacterial Biodegradability of PAH in Khor Al-Zubair Channel, Southern Iraq","authors":"F. N. Al-Kanany, Satar A. Gmais, A. Maki, Asaad M. R. Al-Taee","doi":"10.5376/ijms.2017.07.0042","DOIUrl":"https://doi.org/10.5376/ijms.2017.07.0042","url":null,"abstract":"Four bacterial strains were isolated from Khor Al-Zubair channel, southern Iraq based on a high growth rate on crude oil and on hydrocarbon degradation ability. The strains were preliminarily identified based on morphological observation, and by the Vitek II system. The isolates were identified as Brevundimonas diminuta /vesicularis , Vibrio vulnificus , Sphingomonas paucimobilis and Ochrobactrum anthropic . However, the ability of these strains to utilize crude oil (0.25%; 0.5%; 1% and 2% v/v) varied both in rates of utilization and in growth profiles. The components of crude oil degraded by the isolates were determined by capillary gas chromatography. Sphingomonas paucimobilis and Vibrio vulnificus were the most effective bacteria degrade PAH on seventh day incubation, especially in concentration 2.0 mg/l (97.39% and 84.23%) respectively, meanwhile, Brevundimonas diminuta/ vesicularis was highly effective degrade PAH (73.41% and 62.08%) in concentration 1.0 and 0.5 mg/l, respectively. On the other hand, Ochrobactrum anthropi was the lowest in all concentrations.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88377244","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 : 2017-10-13DOI: 10.5376/IJMS.2017.07.0040
H. Al-Busaidi, L. Jawad, Abdullah H. AL-BALUSHI
In studies of prey-predator relationships, population dynamics and ichthyo-archaeology, the fish otoliths are commonly used to decide taxon, age and size of the teleost fishes. They can also be used to calculate the size of the prey. The relationships between otolith measurements (length and width) and fish body proportions (head, total and standard lengths) were estimated for blackspot snapper Lutjanus ehrenbergii collected from the Oman’s Sea, at Muscat City. Otolith length and width was shown to be good indicators for the length of fish. Linear function offered the best fit for relations between otolith and fish body proportions. Sizes of the left and right otoliths were found not be significantly different.
{"title":"Relationships between Fish and Otolith Size of the Blackspot Snapper Lutjanus ehrenbergii (Peters, 1869) Collected from the Coast of Muscat City, Sea of Oman","authors":"H. Al-Busaidi, L. Jawad, Abdullah H. AL-BALUSHI","doi":"10.5376/IJMS.2017.07.0040","DOIUrl":"https://doi.org/10.5376/IJMS.2017.07.0040","url":null,"abstract":"In studies of prey-predator relationships, population dynamics and ichthyo-archaeology, the fish otoliths are commonly used to decide taxon, age and size of the teleost fishes. They can also be used to calculate the size of the prey. The relationships between otolith measurements (length and width) and fish body proportions (head, total and standard lengths) were estimated for blackspot snapper Lutjanus ehrenbergii collected from the Oman’s Sea, at Muscat City. Otolith length and width was shown to be good indicators for the length of fish. Linear function offered the best fit for relations between otolith and fish body proportions. Sizes of the left and right otoliths were found not be significantly different.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77745082","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 : 2017-09-25DOI: 10.5376/IJMS.2017.07.0039
Rashida Qari, Z. Munir, F. Aslam
This study reports the biochemical composition of three important edible commercial fish species (1. Liza vaigiensis 2. Rastrelliger kanagurta 3. Scomberoides tol ) collected during surveys of fish harbor Dam Sonmiani Balochistan coast in February, 2017. The results demonstrate that protein value ranging from 40-52%, lipid 4-6%, carbohydrate 13.3-22%, ash 20-37.5%, moisture 2-6% and water 70.7-73.7%. This study records length, width and weight of each species too. There was positive significant relationship found in between biochemical constituents of all studied fishes.
{"title":"Biochemical Composition of Three Commercial Fishes ( Liza Vaigensis , Rastrelliger Kanagurta and Scomberioders tol ) Collected from Sonmiani, Balochistan Coast of Pakistan","authors":"Rashida Qari, Z. Munir, F. Aslam","doi":"10.5376/IJMS.2017.07.0039","DOIUrl":"https://doi.org/10.5376/IJMS.2017.07.0039","url":null,"abstract":"This study reports the biochemical composition of three important edible commercial fish species (1. Liza vaigiensis 2. Rastrelliger kanagurta 3. Scomberoides tol ) collected during surveys of fish harbor Dam Sonmiani Balochistan coast in February, 2017. The results demonstrate that protein value ranging from 40-52%, lipid 4-6%, carbohydrate 13.3-22%, ash 20-37.5%, moisture 2-6% and water 70.7-73.7%. This study records length, width and weight of each species too. There was positive significant relationship found in between biochemical constituents of all studied fishes.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80953411","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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