Pub Date : 2017-09-22DOI: 10.5376/IJMS.2017.07.0038
A. Zamroni, M. Amano, M. Yamao
Differences in socio economic status of coastal community in developed country and developing country have an impact on behavior of people in dealing with development of livelihoods strategy. The objective of this paper is to compare the strategy of fishermen to develop fisheries livelihood activities. The comparison of fishermen’s strategy in different countries includes socio-economy characteristics of fishermen at study sites, challenges and opportunities in developing coastal livelihoods, fishers’ perception and stakeholder participation in developing fisheries livelihoods. This study was conducted in Akitsu Cho (town), Higashi Hiroshima Shi (city), Hiroshima Prefecture (province) and Hinase Cho (town), Bizen Shi (city), Okayama Prefecture (province), in Japan and two coastal villages in Indonesia namely Laikang Village in South Sulawesi province and Serewe Village in West Nusa Tenggara Province by administering semi-structured and structured questionnaires. Secondary data were included from statistics, published books, scientific journals and other resources. Descriptive analysis used to interpret the data. The findings show that developing fisheries livelihood in two countries in Asia have different circumstances and different strategies. Based on the above circumstances, women of fishermen’s village can get their idea of consumer’s needs and also create their opinions. Indonesian coastal villages have more to conduct double strategy. It means, fishermen conducted two different livelihood activities by family anticipating for low fisheries season and/or off fisheries season. In Japan side, fishermen spend more time for marketing through both direct and indirect channel by women which improve their household income.
{"title":"A Brief Comparison of Fisheries Livelihoods Strategy: Countries’ Experiences of Japan and Indonesia","authors":"A. Zamroni, M. Amano, M. Yamao","doi":"10.5376/IJMS.2017.07.0038","DOIUrl":"https://doi.org/10.5376/IJMS.2017.07.0038","url":null,"abstract":"Differences in socio economic status of coastal community in developed country and developing country have an impact on behavior of people in dealing with development of livelihoods strategy. The objective of this paper is to compare the strategy of fishermen to develop fisheries livelihood activities. The comparison of fishermen’s strategy in different countries includes socio-economy characteristics of fishermen at study sites, challenges and opportunities in developing coastal livelihoods, fishers’ perception and stakeholder participation in developing fisheries livelihoods. This study was conducted in Akitsu Cho (town), Higashi Hiroshima Shi (city), Hiroshima Prefecture (province) and Hinase Cho (town), Bizen Shi (city), Okayama Prefecture (province), in Japan and two coastal villages in Indonesia namely Laikang Village in South Sulawesi province and Serewe Village in West Nusa Tenggara Province by administering semi-structured and structured questionnaires. Secondary data were included from statistics, published books, scientific journals and other resources. Descriptive analysis used to interpret the data. The findings show that developing fisheries livelihood in two countries in Asia have different circumstances and different strategies. Based on the above circumstances, women of fishermen’s village can get their idea of consumer’s needs and also create their opinions. Indonesian coastal villages have more to conduct double strategy. It means, fishermen conducted two different livelihood activities by family anticipating for low fisheries season and/or off fisheries season. In Japan side, fishermen spend more time for marketing through both direct and indirect channel by women which improve their household income.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90274613","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 : 2017-09-15DOI: 10.5376/IJMS.2017.07.0037
A. Balushi, L. Jawad, Haitham K. Al Busaidi
Otolith weight difference on both sides of the fish head, x , was estimated. Sagittae otolith mass asymmetry was investigated in the littoral lutjanid species Lutjanus ehrenbergii . The absolute value of |x| in Lutjanus ehrenbergii does correlate with the fish length and otolith development. Such case is similar to that in the symmetrical fish species, the absolute. An increase in the absolute value of otolith asymmetry in relation to the fish size was observed. The range of x magnitude was between -0.2 and +0.2.
{"title":"Otolith Mass Asymmetry in Lutjanus ehrenbergii (Peters, 1869) Collected from the Sea of Oman","authors":"A. Balushi, L. Jawad, Haitham K. Al Busaidi","doi":"10.5376/IJMS.2017.07.0037","DOIUrl":"https://doi.org/10.5376/IJMS.2017.07.0037","url":null,"abstract":"Otolith weight difference on both sides of the fish head, x , was estimated. Sagittae otolith mass asymmetry was investigated in the littoral lutjanid species Lutjanus ehrenbergii . The absolute value of |x| in Lutjanus ehrenbergii does correlate with the fish length and otolith development. Such case is similar to that in the symmetrical fish species, the absolute. An increase in the absolute value of otolith asymmetry in relation to the fish size was observed. The range of x magnitude was between -0.2 and +0.2.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74066940","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 : 2017-09-09DOI: 10.5376/IJMS.2017.07.0035
M. M. Al-Hejuje, N. Hussain, H. Al-Saad
Five stations were selected at the middle part of Shatt Al-Arab river to determine the monthly variation of seven eco-toxic elements (Cd +2 , Cu +2 , Fe +2 , Mn +2 , Ni +2 , Pb +2 and Zn +2 ) concentrations and their distribution as dissolved and particulate (exchangeable and residual) phases during the low tide period from December, 2012 to November, 2013. Heavy Metals Pollution Index (HPI) was applied to determine the pollution of Shatt Al-Arab water. Results showed that the concentrations of the previous metals as dissolved phase were (3.01; 2.35; 89.45; 4.48; 9.51; 43.67 and 7.58) µg/l, respectively, whereas in the exchangeable phase of particulate were (48.56; 53.22; 8968.76; 1748.58; 120.14; 271.52; 243.16) µg/g dry weight respectively and in the residual phase of particulate were (57.59; 88.68; 21571.74; 365.90; 163.39; 388.44 and 219.42) µg/g dry weight respectively. The results indicated that mean HPI values were found to be above the critical pollution index value of 100. HPI values for the presence study were ranged from 130.41 to 196.97 referred to polluted water caused by the world impermissible values of dissolved Pb, Fe and Cd.
{"title":"Applied Heavy Metals Pollution Index (HPI) as a Water Pollution Indicator of Shatt Al-Arab River, Basrah-Iraq","authors":"M. M. Al-Hejuje, N. Hussain, H. Al-Saad","doi":"10.5376/IJMS.2017.07.0035","DOIUrl":"https://doi.org/10.5376/IJMS.2017.07.0035","url":null,"abstract":"Five stations were selected at the middle part of Shatt Al-Arab river to determine the monthly variation of seven eco-toxic elements (Cd +2 , Cu +2 , Fe +2 , Mn +2 , Ni +2 , Pb +2 and Zn +2 ) concentrations and their distribution as dissolved and particulate (exchangeable and residual) phases during the low tide period from December, 2012 to November, 2013. Heavy Metals Pollution Index (HPI) was applied to determine the pollution of Shatt Al-Arab water. Results showed that the concentrations of the previous metals as dissolved phase were (3.01; 2.35; 89.45; 4.48; 9.51; 43.67 and 7.58) µg/l, respectively, whereas in the exchangeable phase of particulate were (48.56; 53.22; 8968.76; 1748.58; 120.14; 271.52; 243.16) µg/g dry weight respectively and in the residual phase of particulate were (57.59; 88.68; 21571.74; 365.90; 163.39; 388.44 and 219.42) µg/g dry weight respectively. The results indicated that mean HPI values were found to be above the critical pollution index value of 100. HPI values for the presence study were ranged from 130.41 to 196.97 referred to polluted water caused by the world impermissible values of dissolved Pb, Fe and Cd.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82462700","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 : 2017-09-08DOI: 10.5376/IJMS.2017.07.0034
J. Trivedi, K. Vachhrajani
Seasonal variation in burrow distribution pattern of Ocypode ceratophthalmus (Pallas, 1772) was studied at four different sandy shores along the Saurashtra coast, Gujarat state, India. Burrow numbers were quantified in terms of three different ecological attributes like density, abundance and frequency of occurrence monthly for one year. Three different abiotic factors like sediment temperature, salinity and pH were measured for three seasons at each site. Burrow density, abundance and frequency of occurrence were varied significantly between different seasons and study sites. The sediment pH showed more impact on the burrow abundance as compared to other abiotic parameters. A strong positive correlation was observed between burrow opening diameter and crab carapace width, and burrow diameter and abundance also increased and decreased respectively from the lower to upper shore indicating that these attributes were highly dependent on crab body size. The highest burrow abundance was recorded in the monsoon season as compared to other seasons which is peak juvenile recruitment season of the species. The species is large in size and occurs in high abundance on sandy shores and the burrow distribution of the species is highly dependent on the seasons.
{"title":"Seasonal Burrow Distribution of the Ghost Crab, Ocypode ceratophthalmus (Pallas, 1772), on Sandy Shores of Gujarat, India","authors":"J. Trivedi, K. Vachhrajani","doi":"10.5376/IJMS.2017.07.0034","DOIUrl":"https://doi.org/10.5376/IJMS.2017.07.0034","url":null,"abstract":"Seasonal variation in burrow distribution pattern of Ocypode ceratophthalmus (Pallas, 1772) was studied at four different sandy shores along the Saurashtra coast, Gujarat state, India. Burrow numbers were quantified in terms of three different ecological attributes like density, abundance and frequency of occurrence monthly for one year. Three different abiotic factors like sediment temperature, salinity and pH were measured for three seasons at each site. Burrow density, abundance and frequency of occurrence were varied significantly between different seasons and study sites. The sediment pH showed more impact on the burrow abundance as compared to other abiotic parameters. A strong positive correlation was observed between burrow opening diameter and crab carapace width, and burrow diameter and abundance also increased and decreased respectively from the lower to upper shore indicating that these attributes were highly dependent on crab body size. The highest burrow abundance was recorded in the monsoon season as compared to other seasons which is peak juvenile recruitment season of the species. The species is large in size and occurs in high abundance on sandy shores and the burrow distribution of the species is highly dependent on the seasons.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83490036","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 : 2017-08-26DOI: 10.5376/IJMS.2017.07.0033
Emir Pérez-Bermúdez, A. Ruíz-Urquiola, Laureana Rebordinos-González, G. Espinosa-López, Idania Lee-González, B. Petric
Researchers have used mixed stock analysis (MSA) to infer the relevance of rookeries in sea turtle aggregations for conservation/management purposes. However, their approaches and assumptions are not always homogeneous or realistic. We assayed new MSAs using the annual haplotype frequencies of aggregations and rookeries of Eretmochelys imbricata in the Wider Caribbean (WC), and the population size was selected according to the sampler year most relevant on the maturity of the aggregation. The MSA results obtained using this approach were compared with MSAs executed with grouped haplotype frequency data as has been the most common practice in the literature. The relationship of Jardines del Rey (JR) legal fishing aggregation (Cuba) to other aggregations and rookeries in the region was analyzed with data collected in 2004 to 2006 and during the 1990s. The JR non-adult fishing ground presented high genetic diversity and Mexican rookery was identified as the primary contributor using haplotypes at the 384 bp length and each MSA approach that was used, congruent with the demographic growth reported for this rookery. Using haplotypes at the 740 bp length, the primary contributor to non-adult turtles at JR differed according to the MSA approach used, alternating between Mona Island and the Mexican rookery. Jardines del Rey is a route usually taken by non-adult hawksbills of diverse origin, reflecting the need to strengthen the sampling and conservation efforts on the WC rookeries with rare or orphan haplotypes, and to warn about the impact of the fishery occurring in similar areas. Likewise, adult turtles from JR were highly diverse and from multiple origins, with this area serving as a migratory corridor for first breeders (females) to many WC breeding grounds. Caution should be employed in any MSA approach due to the influence effect of sequence length, selection of the rookery size and haplotype frequencies, as well as other assumptions that may affect the estimated contributions.
研究人员使用混合种群分析(MSA)来推断海龟聚集地与保护/管理目的的相关性。然而，他们的方法和假设并不总是同质的或现实的。本研究利用大加勒比海(WC)地区灰杉叶蝉(Eretmochelys brbricata)群落和栖息地的年单倍型频率分析了新的msa，并根据与群落成熟度最相关的采样年选择种群大小。将使用这种方法获得的MSA结果与文献中最常见的单倍型频率分组数据执行的MSA进行比较。利用2004 - 2006年和20世纪90年代收集的数据，分析了Jardines del Rey(古巴)合法捕鱼群与该地区其他捕鱼群和栖息地的关系。JR非成虫渔场具有较高的遗传多样性，利用384 bp长度的单倍型和MSA方法确定墨西哥栖息地为主要贡献者，与该栖息地的人口增长一致。利用740 bp长度的单倍型，根据MSA方法的不同，JR非成年海龟的主要贡献者在莫纳岛和墨西哥栖息地之间交替。这条路线通常是由不同来源的非成年玳鸟走过的，这反映出需要加强对稀有或孤儿单倍型的WC栖息地的采样和保护工作，并警告在类似地区发生的渔业影响。同样，JR的成年海龟种类繁多，来源多样，该地区是首批繁殖者(雌性)到许多WC繁殖地的迁徙走廊。由于序列长度、群落大小的选择和单倍型频率的影响，以及其他可能影响估计贡献的假设，在任何MSA方法中都应谨慎使用。
{"title":"A New Approach to Mixed Stock Analysis that Informs on the Management and Conservation of Hawksbill in the Wider Caribbean: the Case of the Legal Fishery in Jardines del Rey, Cuba","authors":"Emir Pérez-Bermúdez, A. Ruíz-Urquiola, Laureana Rebordinos-González, G. Espinosa-López, Idania Lee-González, B. Petric","doi":"10.5376/IJMS.2017.07.0033","DOIUrl":"https://doi.org/10.5376/IJMS.2017.07.0033","url":null,"abstract":"Researchers have used mixed stock analysis (MSA) to infer the relevance of rookeries in sea turtle aggregations for conservation/management purposes. However, their approaches and assumptions are not always homogeneous or realistic. We assayed new MSAs using the annual haplotype frequencies of aggregations and rookeries of Eretmochelys imbricata in the Wider Caribbean (WC), and the population size was selected according to the sampler year most relevant on the maturity of the aggregation. The MSA results obtained using this approach were compared with MSAs executed with grouped haplotype frequency data as has been the most common practice in the literature. The relationship of Jardines del Rey (JR) legal fishing aggregation (Cuba) to other aggregations and rookeries in the region was analyzed with data collected in 2004 to 2006 and during the 1990s. The JR non-adult fishing ground presented high genetic diversity and Mexican rookery was identified as the primary contributor using haplotypes at the 384 bp length and each MSA approach that was used, congruent with the demographic growth reported for this rookery. Using haplotypes at the 740 bp length, the primary contributor to non-adult turtles at JR differed according to the MSA approach used, alternating between Mona Island and the Mexican rookery. Jardines del Rey is a route usually taken by non-adult hawksbills of diverse origin, reflecting the need to strengthen the sampling and conservation efforts on the WC rookeries with rare or orphan haplotypes, and to warn about the impact of the fishery occurring in similar areas. Likewise, adult turtles from JR were highly diverse and from multiple origins, with this area serving as a migratory corridor for first breeders (females) to many WC breeding grounds. Caution should be employed in any MSA approach due to the influence effect of sequence length, selection of the rookery size and haplotype frequencies, as well as other assumptions that may affect the estimated contributions.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"79 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88992646","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 : 2017-08-25DOI: 10.5376/IJMS.2017.07.0032
L. Jawad, M. Ibrahim
Three specimens of the family Epinephelidae and two specimens of the family Haemulidae with abnormal coloration, were obtained from Jubail City, Saudi Arabia, Arabian Gulf coast. The epaulet grouper Epinephelus stoliczkae specimens were obtained from the fish market at Jubail City originated from Sultanate of Oman, while the two haemulid species, Plectorhinchus stoliczkae and P. sordidus were collected from the Saudi Arabian waters of the Arabian Gulf at Jubail City. These are the first documented cases of color aberration in those species. A description of the color anomalies is provided.
{"title":"First Record of Abnormal Body Coloration in Fishes Obtained from Jubail Area, Arabian Gulf, Saudi Arabia","authors":"L. Jawad, M. Ibrahim","doi":"10.5376/IJMS.2017.07.0032","DOIUrl":"https://doi.org/10.5376/IJMS.2017.07.0032","url":null,"abstract":"Three specimens of the family Epinephelidae and two specimens of the family Haemulidae with abnormal coloration, were obtained from Jubail City, Saudi Arabia, Arabian Gulf coast. The epaulet grouper Epinephelus stoliczkae specimens were obtained from the fish market at Jubail City originated from Sultanate of Oman, while the two haemulid species, Plectorhinchus stoliczkae and P. sordidus were collected from the Saudi Arabian waters of the Arabian Gulf at Jubail City. These are the first documented cases of color aberration in those species. A description of the color anomalies is provided.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"333 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84068323","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 : 2017-08-11DOI: 10.5376/IJMS.2017.07.0031
M. Hendri, J. Darmanto, B. Prayitno, O. Radjasa, Elvita Elvita
The isolation of secondary metabolites of seaweed Halimeda gracilis was conducted. Isolation begins with 2 kg macerated dried powder Halimeda gracillis in 8 L of n-hexane solvent followed by ethyl acetate and methanol for 3 days. The solvent was filtered and followed by evaporation. Separation and purification of the isolated compounds were done by using chromatography technique. Antibacterial activity was tested by the disc diffusion method with the bacteria E. coli , S. disentriae , and B. subtilis . Isolated compounds are in the form of white crystals. Based on the spectroscopy analysis data of UV, IR, 1H-NMR, 13C-NMR, HMQC, HMBC, and COSY, the pure compounds isolated are β-sitosterol from n-hexane extract and oleic acid from ethyl acetate extract. Isolated compounds and n-hexane extracts showed non antibacterial active, while the ethyl acetate extract showed weak antibacterial active on three test bacteria at a concentration of 200,000 ppm with clear zones of 9.47; 11.09; and 8.84 mm.
{"title":"The Isolation of Metabolite Compounds from Seaweed ( Halimeda gracillis ) in the Waters of Teluk Lampung as a Source of Antibacterial Compounds","authors":"M. Hendri, J. Darmanto, B. Prayitno, O. Radjasa, Elvita Elvita","doi":"10.5376/IJMS.2017.07.0031","DOIUrl":"https://doi.org/10.5376/IJMS.2017.07.0031","url":null,"abstract":"The isolation of secondary metabolites of seaweed Halimeda gracilis was conducted. Isolation begins with 2 kg macerated dried powder Halimeda gracillis in 8 L of n-hexane solvent followed by ethyl acetate and methanol for 3 days. The solvent was filtered and followed by evaporation. Separation and purification of the isolated compounds were done by using chromatography technique. Antibacterial activity was tested by the disc diffusion method with the bacteria E. coli , S. disentriae , and B. subtilis . Isolated compounds are in the form of white crystals. Based on the spectroscopy analysis data of UV, IR, 1H-NMR, 13C-NMR, HMQC, HMBC, and COSY, the pure compounds isolated are β-sitosterol from n-hexane extract and oleic acid from ethyl acetate extract. Isolated compounds and n-hexane extracts showed non antibacterial active, while the ethyl acetate extract showed weak antibacterial active on three test bacteria at a concentration of 200,000 ppm with clear zones of 9.47; 11.09; and 8.84 mm.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81784272","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 : 2017-08-10DOI: 10.5376/ijms.2017.07.0030
L. Jawad, H. Al-Busaidi, Dawood Al-Mamary, Assam Al-Rassadi, J. Al-Mamry
Cases of partial hyper pigmentation and malpigmentation were reported from Diagramma pictum and Pardachirus marmoratus collected from the Arabian Sea coasts of Oman. These cases are the first report on color anomalies in these two fish species. Hyper pigmentation spots were observed mainly on the side of D. pictus , while the malpigmentation patch was observed across the body of P. marmoratus . Both cases are not pathological, but they have an economic effects that the melanic or the ambicolored specimens may cause to the fishermen due to being unfavourable by the customers.
{"title":"Malpigmentation in Diagramma pictum and Pardachirus marmoratus Collected from the Arabian Sea Coasts of Oman","authors":"L. Jawad, H. Al-Busaidi, Dawood Al-Mamary, Assam Al-Rassadi, J. Al-Mamry","doi":"10.5376/ijms.2017.07.0030","DOIUrl":"https://doi.org/10.5376/ijms.2017.07.0030","url":null,"abstract":"Cases of partial hyper pigmentation and malpigmentation were reported from Diagramma pictum and Pardachirus marmoratus collected from the Arabian Sea coasts of Oman. These cases are the first report on color anomalies in these two fish species. Hyper pigmentation spots were observed mainly on the side of D. pictus , while the malpigmentation patch was observed across the body of P. marmoratus . Both cases are not pathological, but they have an economic effects that the melanic or the ambicolored specimens may cause to the fishermen due to being unfavourable by the customers.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86923613","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 : 2017-08-03DOI: 10.5376/ijms.2017.07.0029
K. E. Odo, D. Odedeyi
Various toxicants have been deposited into aquatic environment due to human activities, in light with this, 180 healthy Clarias gariepinus juveniles with mean weight of 7.4±0.64 g and length of 11.2±0.88 cm were exposed to different concentrations of selenium (a typical toxicant) to evaluate its behaviour and histopathological response. The fish were exposed to different concentrations (2, 3, 4, 5 and 6 mg/L) of selenium under a static bioassay for 96 hours after a range finding test and 96 hours LC 50 was determined using probit method. 10 fish per concentration was used for the bioassay in triplicates. The 96 hours lethal concentration (LC 50 ) was estimated to be 3.39 mg/L. The histological examination of the gill revealed hyperplasia and haemorrhage of the gill lamellar. The kidney showed vacuolation and blood stains while the skin demonstrated mucosal eruption. These alterations increase with increase in selenium concentration. Selenium at high concentration has shown to induce behavioural changes on fish and also alterations to organs of C gariepinus juvenile. It is therefore recommended that industries ensure the incorporation of effluents treatment plants to treat wastes before discharging into the environment.
{"title":"Responses and Histopathological Studies of Clarias gariepinus Exposed to Selenium Toxicity","authors":"K. E. Odo, D. Odedeyi","doi":"10.5376/ijms.2017.07.0029","DOIUrl":"https://doi.org/10.5376/ijms.2017.07.0029","url":null,"abstract":"Various toxicants have been deposited into aquatic environment due to human activities, in light with this, 180 healthy Clarias gariepinus juveniles with mean weight of 7.4±0.64 g and length of 11.2±0.88 cm were exposed to different concentrations of selenium (a typical toxicant) to evaluate its behaviour and histopathological response. The fish were exposed to different concentrations (2, 3, 4, 5 and 6 mg/L) of selenium under a static bioassay for 96 hours after a range finding test and 96 hours LC 50 was determined using probit method. 10 fish per concentration was used for the bioassay in triplicates. The 96 hours lethal concentration (LC 50 ) was estimated to be 3.39 mg/L. The histological examination of the gill revealed hyperplasia and haemorrhage of the gill lamellar. The kidney showed vacuolation and blood stains while the skin demonstrated mucosal eruption. These alterations increase with increase in selenium concentration. Selenium at high concentration has shown to induce behavioural changes on fish and also alterations to organs of C gariepinus juvenile. It is therefore recommended that industries ensure the incorporation of effluents treatment plants to treat wastes before discharging into the environment.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75690739","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 : 2017-06-27DOI: 10.5376/IJMS.2017.07.0027
Khaled Al-Khafaji, F. Mutlak, Anfas N. Ukash
The species of crabs, Halimede tyche (Herbst, 1801) are reported from Khor Abudallah south Al-Faw city, NW-Arabian Gulf, Iraq, during 2016. brachyuran crabs now consist of some species are reported from Iraqi coast. The specimens were collected from Iraqi coast by trawl net. Morphological measurements of this species are highlighted and a figure is provided. The results found that it is the first record of this species.
{"title":"New Records of Crabs: Halimede tyche (Herbst, 1801)(Crustacea: Decapoda) from Iraqi Coast, Iraq","authors":"Khaled Al-Khafaji, F. Mutlak, Anfas N. Ukash","doi":"10.5376/IJMS.2017.07.0027","DOIUrl":"https://doi.org/10.5376/IJMS.2017.07.0027","url":null,"abstract":"The species of crabs, Halimede tyche (Herbst, 1801) are reported from Khor Abudallah south Al-Faw city, NW-Arabian Gulf, Iraq, during 2016. brachyuran crabs now consist of some species are reported from Iraqi coast. The specimens were collected from Iraqi coast by trawl net. Morphological measurements of this species are highlighted and a figure is provided. The results found that it is the first record of this species.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89897835","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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