Pub Date : 2018-05-11DOI: 10.5376/IJMS.2018.08.0018
M. Mohsin, Y. Mu, M. Shafqat, A. Memon
In this study maximum sustainable yield of cephalopod fishery resource, 1999-2009, was estimated by employing surplus production models through CEDA and ASPIC computer packages. Obtained results show that this fishery resource is overexploited. CEDA software computed MSY in a range between 4,600-4,900 t (tons). On the other hand, ASPIC range for MSY estimation remained between 4,800-5,200 t for this fishery resource. It is vivid that MSY range computed by both the computer packages overlap each other. CEDA showed conservation in MSY estimation as compared to ASPIC. Moreover, ASPIC results showed higher R 2 values. Considering the MSY estimates, it is recommended that target reference point of MSY for cephalopod fishery resource in Pakistani marine waters should be around 4,900-5,000 t. Harvest of this fishery resource beyond 5,200 t should be considered as limiting reference point. Thus, concrete steps are directly needed to conserve this fishery resource for future.
{"title":"MSY Estimates of Cephalopod Fishery and Its Bioeconomic Implications in Pakistani Marine Waters","authors":"M. Mohsin, Y. Mu, M. Shafqat, A. Memon","doi":"10.5376/IJMS.2018.08.0018","DOIUrl":"https://doi.org/10.5376/IJMS.2018.08.0018","url":null,"abstract":"In this study maximum sustainable yield of cephalopod fishery resource, 1999-2009, was estimated by employing surplus production models through CEDA and ASPIC computer packages. Obtained results show that this fishery resource is overexploited. CEDA software computed MSY in a range between 4,600-4,900 t (tons). On the other hand, ASPIC range for MSY estimation remained between 4,800-5,200 t for this fishery resource. It is vivid that MSY range computed by both the computer packages overlap each other. CEDA showed conservation in MSY estimation as compared to ASPIC. Moreover, ASPIC results showed higher R 2 values. Considering the MSY estimates, it is recommended that target reference point of MSY for cephalopod fishery resource in Pakistani marine waters should be around 4,900-5,000 t. Harvest of this fishery resource beyond 5,200 t should be considered as limiting reference point. Thus, concrete steps are directly needed to conserve this fishery resource for future.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88614224","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 : 2018-05-04DOI: 10.5376/IJMS.2018.08.0017
K. Khafaji, G. M. Al-Malki, R. M. Kareem
The current study aimed determine biochemical composition (protein, fats carbohydrates) and accumulation of heavy metals (Cd, Pb, Zn, Cu and Fe) in the muscle tissues of blue crab Portunus pelgicus (Linnaeus, 1766). Samples of species were collected in summer and winter from NW of the Arabian Gulf, during 2017. Biochemical analysis of male and female found high rates of protein in male and carbohydrate ratios were highest in female, whereas fat was highest female. Protein was apparently high level, was reported (81.47%) in dry weight in male. High level of fat (lipid) content was reported (8.80%) in the females. Likewise higher level of carbohydrate content was noticed (6.72%) in females. The analysis showed that occurrence of metals in muscle tissue of male and female were in the order Fe>Cu>Zn>Pb>Cd. the mean of Cd, Pb, Zn, Cu and Fe concentrations in muscle for male crabs were slightly higher than the average levels of female crabs. Iron was the highest accumulated metal (68.62, 45.24 μg/g) followed by copper (45.24, 23.16 μg/g), zinc 18.98, 9.67 μg/g), lead (1.74, 0.87 μg/g) while cadmium was lowest (0.43, 0.74 μg/g) in tissues of male and female respectively. In general, the objective of this study for determines the proximate Chemical Composition of crab a good source of proteins and metabolically energy and average mineral supply.
{"title":"Biochemical Composition and Heavy Metal Accumulation in Tissues of the Blue Crab Portunus pelagicus (Linnaeus, 1766) from NW of Arabian Gulf, south Iraq","authors":"K. Khafaji, G. M. Al-Malki, R. M. Kareem","doi":"10.5376/IJMS.2018.08.0017","DOIUrl":"https://doi.org/10.5376/IJMS.2018.08.0017","url":null,"abstract":"The current study aimed determine biochemical composition (protein, fats carbohydrates) and accumulation of heavy metals (Cd, Pb, Zn, Cu and Fe) in the muscle tissues of blue crab Portunus pelgicus (Linnaeus, 1766). Samples of species were collected in summer and winter from NW of the Arabian Gulf, during 2017. Biochemical analysis of male and female found high rates of protein in male and carbohydrate ratios were highest in female, whereas fat was highest female. Protein was apparently high level, was reported (81.47%) in dry weight in male. High level of fat (lipid) content was reported (8.80%) in the females. Likewise higher level of carbohydrate content was noticed (6.72%) in females. The analysis showed that occurrence of metals in muscle tissue of male and female were in the order Fe>Cu>Zn>Pb>Cd. the mean of Cd, Pb, Zn, Cu and Fe concentrations in muscle for male crabs were slightly higher than the average levels of female crabs. Iron was the highest accumulated metal (68.62, 45.24 μg/g) followed by copper (45.24, 23.16 μg/g), zinc 18.98, 9.67 μg/g), lead (1.74, 0.87 μg/g) while cadmium was lowest (0.43, 0.74 μg/g) in tissues of male and female respectively. In general, the objective of this study for determines the proximate Chemical Composition of crab a good source of proteins and metabolically energy and average mineral supply.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81194486","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 : 2018-05-02DOI: 10.5376/IJMS.2018.08.0016
M. Al-Battat, A. Bashar, F. Al-imarah
Hajjam Island lies in the lower reaches of Khor Al-Zubair southern of Iraq, it is the unity island in the Iraqi marine water. 15 sediment samples were collected from sites around the island and transferred to the lab in Marine Science Centre for radiological investigation. Two methods were adopted, Active and Passive, for determination of Radon in which an environmental radon monitoring system comprising a radon-cup, an etching system, and a track counting system, was constructed. The radon cup is a cylindrical chamber with a radius of 3.5 cm and a height of 15 cm in combination with a CR-39 detector. The effected radium concentrations from sediment samples were found to range from 0.0013 to 0.0049 with an average value of 0.0028 Bq/Kg. Concentrations of radon measured by passive method were 132±34 to 414±108 with average value 287±45 Bq/m 3 and by active method were 401±26 to 145±9 with average value 263±20 Bq/m 3 . The area and mass exhalation rates were found to be 0.1 to 0.31 with average value of 0.220 Bq/m 2 /h and 0.002 to 0.006 with average value 0.004 Bq/kg/h respectively. The values are found to be safe for sediment use.
{"title":"Concentration of Radon Released from Marine Sediment Around Hajjam Island, Southern Iraq, North West Arabian gulf, using CR-39 detector","authors":"M. Al-Battat, A. Bashar, F. Al-imarah","doi":"10.5376/IJMS.2018.08.0016","DOIUrl":"https://doi.org/10.5376/IJMS.2018.08.0016","url":null,"abstract":"Hajjam Island lies in the lower reaches of Khor Al-Zubair southern of Iraq, it is the unity island in the Iraqi marine water. 15 sediment samples were collected from sites around the island and transferred to the lab in Marine Science Centre for radiological investigation. Two methods were adopted, Active and Passive, for determination of Radon in which an environmental radon monitoring system comprising a radon-cup, an etching system, and a track counting system, was constructed. The radon cup is a cylindrical chamber with a radius of 3.5 cm and a height of 15 cm in combination with a CR-39 detector. The effected radium concentrations from sediment samples were found to range from 0.0013 to 0.0049 with an average value of 0.0028 Bq/Kg. Concentrations of radon measured by passive method were 132±34 to 414±108 with average value 287±45 Bq/m 3 and by active method were 401±26 to 145±9 with average value 263±20 Bq/m 3 . The area and mass exhalation rates were found to be 0.1 to 0.31 with average value of 0.220 Bq/m 2 /h and 0.002 to 0.006 with average value 0.004 Bq/kg/h respectively. The values are found to be safe for sediment use.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72657322","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 : 2018-04-20DOI: 10.5376/IJMS.2018.08.0015
I. P. Bondarev, N. Milchakova
Algal fouling of a gastropod predatory species Rapana venosa (Valenciennes, 1846) was investigated. R. venosa shells act as substrate for a great number of different fouling organisms, among which macroalgae are the most important. We studied the fouling communities on two ecomorphs (sandy and rocky) of R. venosa from the northern part of the Black Sea from 2008 to 2017. The fouling algae taxa were listed and the frequency of their occurrence on two ecomorphs of R. venosa was determined. 65 algae species were found, namely Chlorophyta – 20, Ochrophyta – 16 and Rhodophyta – 29 species. Typical alga species of sandy and rocky R. venosa ecomorphs and their assemblages’ composition was featured. It was found that the expansion of algae species distribution on the soft substrate is associated with R. venosa . During the period of R. venosa populations’ development this invasive species has become an important element of the Black Sea ecosystem which contributes to saving biological diversity of the benthic community due to formation and spreading of its consortium complexes.
{"title":"Macroalgal Fouling of Shells of Rapana venosa (Valenciennes, 1846) (Gastropoda, Muricidae) in the Northern Black Sea","authors":"I. P. Bondarev, N. Milchakova","doi":"10.5376/IJMS.2018.08.0015","DOIUrl":"https://doi.org/10.5376/IJMS.2018.08.0015","url":null,"abstract":"Algal fouling of a gastropod predatory species Rapana venosa (Valenciennes, 1846) was investigated. R. venosa shells act as substrate for a great number of different fouling organisms, among which macroalgae are the most important. We studied the fouling communities on two ecomorphs (sandy and rocky) of R. venosa from the northern part of the Black Sea from 2008 to 2017. The fouling algae taxa were listed and the frequency of their occurrence on two ecomorphs of R. venosa was determined. 65 algae species were found, namely Chlorophyta – 20, Ochrophyta – 16 and Rhodophyta – 29 species. Typical alga species of sandy and rocky R. venosa ecomorphs and their assemblages’ composition was featured. It was found that the expansion of algae species distribution on the soft substrate is associated with R. venosa . During the period of R. venosa populations’ development this invasive species has become an important element of the Black Sea ecosystem which contributes to saving biological diversity of the benthic community due to formation and spreading of its consortium complexes.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"125 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73260404","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 : 2018-03-30DOI: 10.5376/IJMS.2018.08.0014
M. Hendri, Rozirwan Rozirwan, R. Apri, Yulifa Handayani
E.cottonii production is not still optimal and there are opportunities to increase production by developing methods that to utilize the depth level as a growing medium. Method of verticulture cultivation with pocket nets, more innovative and have high production level. This study aimed to solve the problems in seaweed cultivation by optimizing the land. Design of vertical cultivation model E.cottonii in Kelagian Island using bamboo raft and made up by 15 points on each of the 10 depth levels (BRL); 0, 70, 140, 210, 280, 350, 420, 490, 560 and 630 cm from the surface. Environmental parameters and seaweed are measured weekly. This study measures daily, weekly, absolute growth and total production. Data were analyzed by cruciate-wallis test. The results showed that the physico-chemical parameters of the waters were suitable for the cultivation of E.cottonii , except for the nitrate contents and current which were below the optimum value. The largest average weekly growth showed on the BRL 1 with 118.08 g and the smallest on BRL 10 with 107.41 g. The absolute greatest growth rate showed on the BRL 1 weighs 145.33 g and the lowest on BRL 10 with 130.67 g. The highest daily growth on BRL 1 with 1.59% / day and the lowest at BRL 10 with 1.33% / day. The total of E.cottonii production cultivated showed BRL 1 - BRL 10 of 20744 g (20.744 kg), the highest total production at BRL 1 with 2180 g and the lowest BRL 10 by 1960 g. The kruskall-wallis analysis were showed about 21.837 (H count ) and 23,685 (H table ), where it’s not influence of depth level (BRL) for seaweed grown.
{"title":"Intensification of Seaweed Cultivation Euchema cottonii with Verticulture Method in the Water of Kelagian Island, Lampung Bay","authors":"M. Hendri, Rozirwan Rozirwan, R. Apri, Yulifa Handayani","doi":"10.5376/IJMS.2018.08.0014","DOIUrl":"https://doi.org/10.5376/IJMS.2018.08.0014","url":null,"abstract":"E.cottonii production is not still optimal and there are opportunities to increase production by developing methods that to utilize the depth level as a growing medium. Method of verticulture cultivation with pocket nets, more innovative and have high production level. This study aimed to solve the problems in seaweed cultivation by optimizing the land. Design of vertical cultivation model E.cottonii in Kelagian Island using bamboo raft and made up by 15 points on each of the 10 depth levels (BRL); 0, 70, 140, 210, 280, 350, 420, 490, 560 and 630 cm from the surface. Environmental parameters and seaweed are measured weekly. This study measures daily, weekly, absolute growth and total production. Data were analyzed by cruciate-wallis test. The results showed that the physico-chemical parameters of the waters were suitable for the cultivation of E.cottonii , except for the nitrate contents and current which were below the optimum value. The largest average weekly growth showed on the BRL 1 with 118.08 g and the smallest on BRL 10 with 107.41 g. The absolute greatest growth rate showed on the BRL 1 weighs 145.33 g and the lowest on BRL 10 with 130.67 g. The highest daily growth on BRL 1 with 1.59% / day and the lowest at BRL 10 with 1.33% / day. The total of E.cottonii production cultivated showed BRL 1 - BRL 10 of 20744 g (20.744 kg), the highest total production at BRL 1 with 2180 g and the lowest BRL 10 by 1960 g. The kruskall-wallis analysis were showed about 21.837 (H count ) and 23,685 (H table ), where it’s not influence of depth level (BRL) for seaweed grown.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73746390","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 : 2018-03-23DOI: 10.5376/ijms.2018.08.0012
L. Jawad, O. Akyol, İ. Aydin
This study aimed to identify skeletal deformities in Mullus barbatus collected from a natural population from northern the Aegean Sea, Turkey. Lordosis, kyphosis, and ankylosis were detected. Assessment of abnormality in the studied specimen was carried out by the morphological diagnosis and also by using radiography. The case studied was not fatal as it occurred in an adult individual. The possible causes for such deformity are discussed. Further studies are needed to relate specific pollutants with the observed types of deformity.
{"title":"Severe Case of Lordosis-Kyphosis-Ankylosis in Mullus barbatus Linnaeus, 1758 (Teleostei: Mullidae) Collected from the Northern Aegean Sea, Turkey","authors":"L. Jawad, O. Akyol, İ. Aydin","doi":"10.5376/ijms.2018.08.0012","DOIUrl":"https://doi.org/10.5376/ijms.2018.08.0012","url":null,"abstract":"This study aimed to identify skeletal deformities in Mullus barbatus collected from a natural population from northern the Aegean Sea, Turkey. Lordosis, kyphosis, and ankylosis were detected. Assessment of abnormality in the studied specimen was carried out by the morphological diagnosis and also by using radiography. The case studied was not fatal as it occurred in an adult individual. The possible causes for such deformity are discussed. Further studies are needed to relate specific pollutants with the observed types of deformity.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"75 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74689749","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 : 2018-03-19DOI: 10.5376/IJMS.2018.08.0011
Rashida Qari, Q. Abbas, A. R. Khan
Seaweeds are marine algae commonly found in marine environment. The red seaweed (Rhodophyta) is commonly exploited for the production of polysaccharides. Carrageenan is one of the commercial polysaccharide. It is complex of D-galactose 3, 6-anhydro D-galactose and monoesterified sulphuric acid found in cell wall of red seaweeds, used as an emulsifier, a binder. It is also used for suspension and stabilization in pharmaceutical, cosmetic and food processing. Hypnea is a red algal genus and well known carrageenan producing marine plant. Therefore three species of Hypnea : H. musciformis, H. pannosa and H. valentiae were collected from the four different coastal areas (Buleji, Hawks Bay, Manora and Paradise Point) of Karachi coast for the extraction of carrageenan in present study. The highest carrageenan extracted from H. valentiae (18-46.93%) as compared with the other two studied species. The high carrageenan concentration was mostly found in winter season. The total biomass 6846.79 g/m 2 of three species of Hypnea was recorded during the study period and the highest biomass was recorded in January and the lowest in August. The highest biomass was obtained from Manora coast as compared to other three coastal areas. There was significant correlation was found in between carrageenan and biomass. From the present investigation it is concluded that studied seaweeds species of Hypnea have good quantity of carrageenan and can be used in industries for the manufacturing and production of carrageenan.
{"title":"Carrageenan Content in Three Species of Hypnea ( H. musciformis Wulfen J. V. Lamouroux, H. pannosa J. Agardh and H. valentiae Turner Montagne) of Karachi Coast","authors":"Rashida Qari, Q. Abbas, A. R. Khan","doi":"10.5376/IJMS.2018.08.0011","DOIUrl":"https://doi.org/10.5376/IJMS.2018.08.0011","url":null,"abstract":"Seaweeds are marine algae commonly found in marine environment. The red seaweed (Rhodophyta) is commonly exploited for the production of polysaccharides. Carrageenan is one of the commercial polysaccharide. It is complex of D-galactose 3, 6-anhydro D-galactose and monoesterified sulphuric acid found in cell wall of red seaweeds, used as an emulsifier, a binder. It is also used for suspension and stabilization in pharmaceutical, cosmetic and food processing. Hypnea is a red algal genus and well known carrageenan producing marine plant. Therefore three species of Hypnea : H. musciformis, H. pannosa and H. valentiae were collected from the four different coastal areas (Buleji, Hawks Bay, Manora and Paradise Point) of Karachi coast for the extraction of carrageenan in present study. The highest carrageenan extracted from H. valentiae (18-46.93%) as compared with the other two studied species. The high carrageenan concentration was mostly found in winter season. The total biomass 6846.79 g/m 2 of three species of Hypnea was recorded during the study period and the highest biomass was recorded in January and the lowest in August. The highest biomass was obtained from Manora coast as compared to other three coastal areas. There was significant correlation was found in between carrageenan and biomass. From the present investigation it is concluded that studied seaweeds species of Hypnea have good quantity of carrageenan and can be used in industries for the manufacturing and production of carrageenan.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"110 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81364375","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 : 2018-03-02DOI: 10.5376/IJMS.2018.08.0010
M. C. Likongwe, M. Katundu, Placid M. G. Mpeketula, W. Kasapila
This study assessed the effects of two processing methods; open sun drying and solar tent drying on microbial quality of Barbus paludinosus , (straight fin barb locally known as Matemba), a species of ray-finned fish in the family Cyprinidae that supports a significant fishery sector in Malawi. Barbus paludinosus (Matemba) were dried using open sun drying and solar tent driers. Samples were collected in newly bought polythene bags, well labelled and collected in cooler boxes transported ready for laboratory analysis. One gram (1 g) representative sample was obtained aseptically from the muscle of the fresh and dried straight fin barb (Matemba) samples. The samples were grounded and serial dilutions (10 -1 to 10 -4 ) of the homogenized samples were made using sterile distilled water. Fish samples were analysed for total plate count (TPC), E. coli counts and for pathogenic organisms (Salmonella) following the methods prescribed by (AOAC, 2000). Each analysis was carried out in triplicates. There were significant differences (P < 0.05), with respect to total viable bacterial counts between open sun dried and solar tent dried B. paludinosus (1.6 x 10 6 cfu/g, 1.4 x 10 6 cfu/g, respectively). Open sun dried B. paludinosus harboured significantly higher total viable counts as well as a higher population of Escherichia coli compared to solar tent dried Barbus paludinosus . Overall, bacterial populations were not above the marginally acceptable norms (1 x 10 7 cfu/g) for both processing methods implying that the two methods can be deployable without public health concerns.
{"title":"Microbial Quality Assessment of Open Sun and Solar Tent Dried Barbus paludinosus in Lake Chilwa Basin","authors":"M. C. Likongwe, M. Katundu, Placid M. G. Mpeketula, W. Kasapila","doi":"10.5376/IJMS.2018.08.0010","DOIUrl":"https://doi.org/10.5376/IJMS.2018.08.0010","url":null,"abstract":"This study assessed the effects of two processing methods; open sun drying and solar tent drying on microbial quality of Barbus paludinosus , (straight fin barb locally known as Matemba), a species of ray-finned fish in the family Cyprinidae that supports a significant fishery sector in Malawi. Barbus paludinosus (Matemba) were dried using open sun drying and solar tent driers. Samples were collected in newly bought polythene bags, well labelled and collected in cooler boxes transported ready for laboratory analysis. One gram (1 g) representative sample was obtained aseptically from the muscle of the fresh and dried straight fin barb (Matemba) samples. The samples were grounded and serial dilutions (10 -1 to 10 -4 ) of the homogenized samples were made using sterile distilled water. Fish samples were analysed for total plate count (TPC), E. coli counts and for pathogenic organisms (Salmonella) following the methods prescribed by (AOAC, 2000). Each analysis was carried out in triplicates. There were significant differences (P < 0.05), with respect to total viable bacterial counts between open sun dried and solar tent dried B. paludinosus (1.6 x 10 6 cfu/g, 1.4 x 10 6 cfu/g, respectively). Open sun dried B. paludinosus harboured significantly higher total viable counts as well as a higher population of Escherichia coli compared to solar tent dried Barbus paludinosus . Overall, bacterial populations were not above the marginally acceptable norms (1 x 10 7 cfu/g) for both processing methods implying that the two methods can be deployable without public health concerns.","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91542997","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 : 2018-02-24DOI: 10.5376/IJMS.2018.08.0009
Md. Simul Bhuyan, M. K. Sarkar, M. Hasan
The present study was conducted to assess the effect of three types of feeds on the growth of Thai pangus ( pangasius hypophthalmus ) from July, 2016 to Sept., 2016 at Durgapur in Comilla, Bangladesh. Growth performance was influenced by the feed type. All treatments were carried out in triplicate at 2 acres and average initial weights of Thai pangus were 150 g. Average final weights of Thai pangus were 650 g, 620 g, and 600 g with specific growth rate of 1.11110769%, 1.11109677% and 1.1111% in T1, T2 and T3 respectively. Feed conversion ratio were estimated 1.9727 in T1, 2 in T2 and also 2.0325 in T3. The result showed a typical increasing trend of final weight and specific growth rate of Thai pangus along with the increasing of feed protein level. The production cost depends on protein level of diet. This study recommended that the quality and cost efficiency of feed should be considered along with its protein level to get a profitable growth of Thai pangus ( pangasius hypophthalmus ).
{"title":"Efficacy of Handmade Feed on Growth Performance of Thai Pangus ( pangasius hypophthalmus )","authors":"Md. Simul Bhuyan, M. K. Sarkar, M. Hasan","doi":"10.5376/IJMS.2018.08.0009","DOIUrl":"https://doi.org/10.5376/IJMS.2018.08.0009","url":null,"abstract":"The present study was conducted to assess the effect of three types of feeds on the growth of Thai pangus ( pangasius hypophthalmus ) from July, 2016 to Sept., 2016 at Durgapur in Comilla, Bangladesh. Growth performance was influenced by the feed type. All treatments were carried out in triplicate at 2 acres and average initial weights of Thai pangus were 150 g. Average final weights of Thai pangus were 650 g, 620 g, and 600 g with specific growth rate of 1.11110769%, 1.11109677% and 1.1111% in T1, T2 and T3 respectively. Feed conversion ratio were estimated 1.9727 in T1, 2 in T2 and also 2.0325 in T3. The result showed a typical increasing trend of final weight and specific growth rate of Thai pangus along with the increasing of feed protein level. The production cost depends on protein level of diet. This study recommended that the quality and cost efficiency of feed should be considered along with its protein level to get a profitable growth of Thai pangus ( pangasius hypophthalmus ).","PeriodicalId":22529,"journal":{"name":"The international journal of marine science","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90860091","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 : 2018-02-09DOI: 10.5376/IJMS.2018.08.0008
A. Zamroni
Coastal resource management, community empowerment and socio economic development are the cornerstones for uplifting the lives of coastal area inhabitants. Japan is one of country who succeed to empowered economy of coastal community by diversify coastal and fisheries livelihoods. This study aims; to explore Japanese experiences on coastal resources management, to assess the fishing activity in case study area of Hiroshima, and to describe livelihood strategy in coastal fishery of case study area of Hiroshima. Primary data were collected from representatives of shrimp-trawl fishermen, and key informants using structured and semi-structured questionnaires. Secondary data such as statistical data and reports and books from previous studies were used as preliminary information. The data were analyzed by using descriptive analysis and qualitative contents analysis. The results of the study showed that Japan has many years’ experiences to manage coastal fishery in effective and sustainable ways using community-based coastal fishery management and co-management approach. Meanwhile, Fisheries Cooperative Associations (FCAs) and Fisheries Management Organization (FMOs) are as institutional tools. In case study of coastal fishery activity, shrimp-trawl fishery in Akitsu has been manage by FCA, even the number of fishermen and their activity gradually decrease. However, the problems faced related to the sustainability of fishing activities in Akitsu is related to catch decreased, initial investment, regeneration of the fishing activities itself, and upwelling in the past. Increased a number of aging fishermen and no successors are another problems in sustainability of fisheries livelihoods. In fact, young people escape from the fishery communities to work in the cities and aging people remain in fishery community. This is occurred in shrimp-trawl fishery ( Sokobikiami ) in Akitsu. Therefore, local government as well as central government can expand the oyster culture by providing incentives or subsidies to attract young generation back to the area to pursue this business.
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