Pub Date : 2019-05-28DOI: 10.20884/1.OA.2019.15.1.638
A. Warsa, L. P. Astuti
Ir. H. Djuanda Reservoir have high fishes biodiversity and one of them is Hampala barb (Hampala macrolepidota) and it’s economical species. Hampala barb is one of dominant species was captured at Ir. H. Djuanda Reservoir but was experience decreasing of population by overfishing. The objective of this research were to known gillnet selectivity and length at first mature for hampala barb (Hampala macrolepidota) at Ir. H. Djuanda Reservoir. The information will be used as base determination of gillnet mesh size and legal size for sustainability fisheries management. The research was done at February-September 2017 with experimental fishing used gillnet with mesh size between 1.0-3.0 inch with intervals 0.5 inch. Total length hampala barb with highest captured probability for gillnet with mesh size 1.0; 1.5; 2.0; 2.5 and 3.0 inch were 11.0; 17.0; 22.5; 28,0 and 33.5 cm respectively. Length at first mature of hampala barb for female and male were 14.2 and 13.8 cm respectively. Based on the information, the minimum total length for exploitation was 19 cm using gillnet with mesh size > 2.0 inch.
{"title":"Monofilament Gillnet Selectivity for Hampala Barb (Hampala macrolepidota) Management at Ir. H. Djuanda Reservoir-West Java","authors":"A. Warsa, L. P. Astuti","doi":"10.20884/1.OA.2019.15.1.638","DOIUrl":"https://doi.org/10.20884/1.OA.2019.15.1.638","url":null,"abstract":"Ir. H. Djuanda Reservoir have high fishes biodiversity and one of them is Hampala barb (Hampala macrolepidota) and it’s economical species. Hampala barb is one of dominant species was captured at Ir. H. Djuanda Reservoir but was experience decreasing of population by overfishing. The objective of this research were to known gillnet selectivity and length at first mature for hampala barb (Hampala macrolepidota) at Ir. H. Djuanda Reservoir. The information will be used as base determination of gillnet mesh size and legal size for sustainability fisheries management. The research was done at February-September 2017 with experimental fishing used gillnet with mesh size between 1.0-3.0 inch with intervals 0.5 inch. Total length hampala barb with highest captured probability for gillnet with mesh size 1.0; 1.5; 2.0; 2.5 and 3.0 inch were 11.0; 17.0; 22.5; 28,0 and 33.5 cm respectively. Length at first mature of hampala barb for female and male were 14.2 and 13.8 cm respectively. Based on the information, the minimum total length for exploitation was 19 cm using gillnet with mesh size > 2.0 inch.","PeriodicalId":31102,"journal":{"name":"OmniAkuatika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41871519","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 : 2019-05-14DOI: 10.20884/1.OA.2019.15.1.626
I. Permatasari, F. Prasetiya, S. Arsad, M. Agung, J. Mouget
Haslea ostrearia has known as the only diatom which synthesizes a water-soluble blue pigment, marennine. It has some biological activities such as allelopathy, antioxidant, antibacterial, antiviral, and growth inhibitor. Marennine is available in two forms, intracellular which located in the apical of the cell and extracellular which released into the culture medium. This research aimed to test the bioactivity of Haslea ostrearia supernatant adapted in Indonesia as an antibacterial against pathogenic bacteria relevant to marine culture using in-vitro study. This research was using an explorative method, data analysed statistically and descriptive-comparatively observed. Observation parameters were the inhibitory zone of antibacterial activity, absorbance value of MIC test, and bacterial growth qualitatively from MBC test. Marennine concentration in the supernatant of Haslea ostrearia adapted in Indonesia is about 3.74 mg. L-1. The highest concentration supernatant of Haslea ostrearia that shown antibacterial activity is 3.5 mg. L-1 with inhibitory zone diameter is about 6.87 mm for Staphylococcus aureus and 7.14 mm for Vibrio harveyi, correspondingly. The minimum concentration that inhibits the growth of Staphylococcus aureus is 0.03 mg. L-1, while for Vibrio harveyi is 0.06 mg. L-1. Antibacterial activity of supernatant Haslea ostrearia originally adapted in Indonesia classified into bacteriostatic
{"title":"Antibacterial Activity of Haslea ostrearia Supernatant Adapted in Indonesia against Pathogenic Bacteria Relevant to Mariculture (In-Vitro Study)","authors":"I. Permatasari, F. Prasetiya, S. Arsad, M. Agung, J. Mouget","doi":"10.20884/1.OA.2019.15.1.626","DOIUrl":"https://doi.org/10.20884/1.OA.2019.15.1.626","url":null,"abstract":"Haslea ostrearia has known as the only diatom which synthesizes a water-soluble blue pigment, marennine. It has some biological activities such as allelopathy, antioxidant, antibacterial, antiviral, and growth inhibitor. Marennine is available in two forms, intracellular which located in the apical of the cell and extracellular which released into the culture medium. This research aimed to test the bioactivity of Haslea ostrearia supernatant adapted in Indonesia as an antibacterial against pathogenic bacteria relevant to marine culture using in-vitro study. This research was using an explorative method, data analysed statistically and descriptive-comparatively observed. Observation parameters were the inhibitory zone of antibacterial activity, absorbance value of MIC test, and bacterial growth qualitatively from MBC test. Marennine concentration in the supernatant of Haslea ostrearia adapted in Indonesia is about 3.74 mg. L-1. The highest concentration supernatant of Haslea ostrearia that shown antibacterial activity is 3.5 mg. L-1 with inhibitory zone diameter is about 6.87 mm for Staphylococcus aureus and 7.14 mm for Vibrio harveyi, correspondingly. The minimum concentration that inhibits the growth of Staphylococcus aureus is 0.03 mg. L-1, while for Vibrio harveyi is 0.06 mg. L-1. Antibacterial activity of supernatant Haslea ostrearia originally adapted in Indonesia classified into bacteriostatic","PeriodicalId":31102,"journal":{"name":"OmniAkuatika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41630464","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 : 2019-05-14DOI: 10.20884/1.OA.2019.15.1.611
Ramses Ramses, Fauziah Syamsi, Notowinarto Notowinarto
This study aims to analyze the aspect length of weight relationship, growth pattern, and sex ratio of Dog conch. This research was conducted in May-August 2018. The samples were collected from three locations (stations) which became the main of catching the Dog conch in Kota Batam, namely, Jaloh Island, Kangkung Bay, and Terong Island. A total of 377 individuals (162 males and 215 females) S. canarium were collected from three research stations. The value of the length-weight relationship for females, males, dan blended, at the respective station, are Jaloh Island, W=0,000142L 2,924 , R²= 0.555 (female), W=0,00049L 2,610 , R²= 0.566 (male), and W=0,000165L 2,881 , with a value of R²= 0.572 (blanded); Kangkung Bay, W=0,0850L 1,275 , R²= 0.325 (female), 0,00000511L 3,185 , R²= 0.776 (male), and W=0,0384L 1,480 , with R² = 0.374 (blended); As well as Terong Island, W=1,227L 0,746 , R²= 0.180 (female), W=0,00139L 2,385 , R²= 0.714 (male) and W=0,118L 1,305 with R²= 0.355 (blended). The pattern of growth of Dog conch is negative allometric (b 3) has a positive allometric growth pattern, where weight gain is faster than long increments. The sex ratio of Dog conch on Jaloh Island and Terong Island is balanced, while in Kangkung Bay it is not balanced. Overall the sex ratio in the study location is not balanced with a ratio of 1: 1.33 with the expectation frequency (Ei) of 188.8.
{"title":"Length-Weight Relationship, Growth Patterns and Sex Ratio of Dog Conch Strombus Canarium Linnaeus, 1758 in the Waters of Kota Batam","authors":"Ramses Ramses, Fauziah Syamsi, Notowinarto Notowinarto","doi":"10.20884/1.OA.2019.15.1.611","DOIUrl":"https://doi.org/10.20884/1.OA.2019.15.1.611","url":null,"abstract":"This study aims to analyze the aspect length of weight relationship, growth pattern, and sex ratio of Dog conch. This research was conducted in May-August 2018. The samples were collected from three locations (stations) which became the main of catching the Dog conch in Kota Batam, namely, Jaloh Island, Kangkung Bay, and Terong Island. A total of 377 individuals (162 males and 215 females) S. canarium were collected from three research stations. The value of the length-weight relationship for females, males, dan blended, at the respective station, are Jaloh Island, W=0,000142L 2,924 , R²= 0.555 (female), W=0,00049L 2,610 , R²= 0.566 (male), and W=0,000165L 2,881 , with a value of R²= 0.572 (blanded); Kangkung Bay, W=0,0850L 1,275 , R²= 0.325 (female), 0,00000511L 3,185 , R²= 0.776 (male), and W=0,0384L 1,480 , with R² = 0.374 (blended); As well as Terong Island, W=1,227L 0,746 , R²= 0.180 (female), W=0,00139L 2,385 , R²= 0.714 (male) and W=0,118L 1,305 with R²= 0.355 (blended). The pattern of growth of Dog conch is negative allometric (b 3) has a positive allometric growth pattern, where weight gain is faster than long increments. The sex ratio of Dog conch on Jaloh Island and Terong Island is balanced, while in Kangkung Bay it is not balanced. Overall the sex ratio in the study location is not balanced with a ratio of 1: 1.33 with the expectation frequency (Ei) of 188.8.","PeriodicalId":31102,"journal":{"name":"OmniAkuatika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49035345","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 : 2019-05-14DOI: 10.20884/1.OA.2019.15.1.607
S. Arsad, L. Sari, Muhammad Zainuddin, M. Musa
Milkfish is potential fish with high production and belong to ten of fish commodities culture in Indonesia. Pond stability of milkfish especially in fingerling phase (young phase) influenced by several factors including water quality and organism availability (periphyton). This recent study aimed to assess the milkfish traditional pond stability in fingerling phase based on water quality and periphyton availability aspects. These aspects are quite important to milkfish production and their growth as well as their food habit. The research was conducted in traditional pond located in UPT Fisheries Brackish and Saline Water Probolinggo for three months. Water quality and periphyton analyses were in situ and ex situ. The result shows that all the water quality is belong to good condition (stable) except in ammonia, TOM, and orthophosphate. However, this fluctuated value is not significantly impacting to the living organisms (milkfish). The research concluded that the fingerling milkfish traditional pond is belonging to moderate to stable condition.
Milkfish是一种潜在的高产鱼类，属于印尼十大鱼类商品文化。乳鱼的池塘稳定性，特别是在鱼种期（幼鱼期）的池塘稳定性受到几个因素的影响，包括水质和生物有效性（外周生物）。这项最近的研究旨在根据水质和周边生物的可用性方面评估乳鱼传统池塘在鱼种养殖阶段的稳定性。这些方面对乳鱼的生产、生长以及饮食习惯都非常重要。该研究在UPT Fisheries Brackish and Saline Water Probolinggo的传统池塘中进行了为期三个月的研究。对水质和周边生物进行了原位和非原位分析。结果表明，除氨、TOM和正磷酸盐外，其余水质均处于良好状态（稳定）。然而，这个波动的数值对活体（乳鱼）没有显著影响。研究结果表明，传统养殖的鱼种乳鱼池塘属于中度至稳定状态。
{"title":"Milkfish (Chanos chanos Forskal) Traditional Pond Stability Based On Water Quality Analyses And Periphyton Availability","authors":"S. Arsad, L. Sari, Muhammad Zainuddin, M. Musa","doi":"10.20884/1.OA.2019.15.1.607","DOIUrl":"https://doi.org/10.20884/1.OA.2019.15.1.607","url":null,"abstract":"Milkfish is potential fish with high production and belong to ten of fish commodities culture in Indonesia. Pond stability of milkfish especially in fingerling phase (young phase) influenced by several factors including water quality and organism availability (periphyton). This recent study aimed to assess the milkfish traditional pond stability in fingerling phase based on water quality and periphyton availability aspects. These aspects are quite important to milkfish production and their growth as well as their food habit. The research was conducted in traditional pond located in UPT Fisheries Brackish and Saline Water Probolinggo for three months. Water quality and periphyton analyses were in situ and ex situ. The result shows that all the water quality is belong to good condition (stable) except in ammonia, TOM, and orthophosphate. However, this fluctuated value is not significantly impacting to the living organisms (milkfish). The research concluded that the fingerling milkfish traditional pond is belonging to moderate to stable condition.","PeriodicalId":31102,"journal":{"name":"OmniAkuatika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45849964","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 : 2019-05-14DOI: 10.20884/1.OA.2019.15.1.619
Bensahla Talet Lotfi, Ahmed BENSAHLA TALET
We tried to estimate age, growth parameters, condition factor, length-weight relationship and mortality rates (Z, M, and F) of the common carp in Merdja Sidi Abed dam. Cyprinus carpio specimens were captured by long line between April and June 2013 in Merdjea Sidi abed. 220 individuals were collected and weights ranged between 265.5 and 620.3 g while the total length ranged between 26.3 and 35.6 cm. Length-converted catch curve was used to estimate total annual instantaneous mortality rates (Z), natural mortality was calculated using Pauly formula [ln(M) = -0.0152 - 0.279 ln(L∞) + 0.6543 ln(K) + 0.463 ln(T)]. Recruitment patterns were determined from the routine implemented in FISAT II. For all individuals (n = 220) of the common carp, the relationship between total length and body weight was: W = 0.0384 L2.70 (r2 = 0.906) for females and W = 0.0467 L2.653(r2 = 0.976) for males a minor allometry was found for this species, mean condition factor K was estimated at 1.41. The maximum value of recruitment was recorded in March-April period with 19.56 and 15.20 % respectively. The Battacharya method was used to estimate age of individuals that was comprised between 1 and years 3. The equation of Von Bertalanffy growth was: L = 36.75 [1-e-0.46 (t + 0.33)] for all the population. Total mortality (Z), natural mortality (M) and fishing mortality (F) were as follows: Z = 1.08, M = 0.82, F = 0.26 yr-1while exploitation ratio (E) was evaluated at 0.24 indicating an under exploitation of this local resource.
{"title":"Age, Growth and Mortality of the Common Carp (Cyprinus carpio) Population in Merdja Sidi Abed Dam, Algeria.","authors":"Bensahla Talet Lotfi, Ahmed BENSAHLA TALET","doi":"10.20884/1.OA.2019.15.1.619","DOIUrl":"https://doi.org/10.20884/1.OA.2019.15.1.619","url":null,"abstract":"We tried to estimate age, growth parameters, condition factor, length-weight relationship and mortality rates (Z, M, and F) of the common carp in Merdja Sidi Abed dam. Cyprinus carpio specimens were captured by long line between April and June 2013 in Merdjea Sidi abed. 220 individuals were collected and weights ranged between 265.5 and 620.3 g while the total length ranged between 26.3 and 35.6 cm. Length-converted catch curve was used to estimate total annual instantaneous mortality rates (Z), natural mortality was calculated using Pauly formula [ln(M) = -0.0152 - 0.279 ln(L∞) + 0.6543 ln(K) + 0.463 ln(T)]. Recruitment patterns were determined from the routine implemented in FISAT II. For all individuals (n = 220) of the common carp, the relationship between total length and body weight was: W = 0.0384 L2.70 (r2 = 0.906) for females and W = 0.0467 L2.653(r2 = 0.976) for males a minor allometry was found for this species, mean condition factor K was estimated at 1.41. The maximum value of recruitment was recorded in March-April period with 19.56 and 15.20 % respectively. The Battacharya method was used to estimate age of individuals that was comprised between 1 and years 3. The equation of Von Bertalanffy growth was: L = 36.75 [1-e-0.46 (t + 0.33)] for all the population. Total mortality (Z), natural mortality (M) and fishing mortality (F) were as follows: Z = 1.08, M = 0.82, F = 0.26 yr-1while exploitation ratio (E) was evaluated at 0.24 indicating an under exploitation of this local resource.","PeriodicalId":31102,"journal":{"name":"OmniAkuatika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46608334","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 : 2019-05-06DOI: 10.20884/1.oa.2019.15.1.573
M. W. Lewaru, F. Pratiwi, S. Sunardi
Karst Citatah region has been known strategies economic value of biotic and a biotic resources. This study investigated plankton biodiversity potency on Cibukur and Cibodas rivers where it already made in Karst Citatah region, particularly on Masigit-Pawon. The result of four stations showed that Karst Masigit-Pawon region was high potency with Plankton biodiversity resources with Diversity and dominancy index almost 1. The numbers of Plankton identified were of 24 species of phytoplankton consist of 9 class and 16 species of zooplankton consists of 6 filum. The high abundance of Plankton was Navicula sp(5.280 species), Synedra sp(4.092 species), dan Cyclops sp(2.904 species) respectively.
{"title":"Plankton Diversity in Karst River, Masigit - Pawon Cave, West Java, Indonesia","authors":"M. W. Lewaru, F. Pratiwi, S. Sunardi","doi":"10.20884/1.oa.2019.15.1.573","DOIUrl":"https://doi.org/10.20884/1.oa.2019.15.1.573","url":null,"abstract":"Karst Citatah region has been known strategies economic value of biotic and a biotic resources. This study investigated plankton biodiversity potency on Cibukur and Cibodas rivers where it already made in Karst Citatah region, particularly on Masigit-Pawon. The result of four stations showed that Karst Masigit-Pawon region was high potency with Plankton biodiversity resources with Diversity and dominancy index almost 1. The numbers of Plankton identified were of 24 species of phytoplankton consist of 9 class and 16 species of zooplankton consists of 6 filum. The high abundance of Plankton was Navicula sp(5.280 species), Synedra sp(4.092 species), dan Cyclops sp(2.904 species) respectively.","PeriodicalId":31102,"journal":{"name":"OmniAkuatika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47788861","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 : 2019-05-02DOI: 10.20884/1.oa.2019.15.1.527
Rugaya Serosero, S. Sulistiono, N. A. Butet, E. Riani
Coconut crab (Birgus latro) is a crustacean that has a large size until four kilograms. The study aimed to analyze sex ratio and growth pattern including the relationship of thorax length - body weight, thorax width - body weight and cephalothorax length plus rostrum - body weight in Daeo (Morotai Island), Laigoma (South Halmahera District) and Fitako (North Halmahera District). The sex ratio was determined using χ2 test and the growth pattern was tested by the b value through t test. The results showed sex ratio of 1: 0.9 in Daeo (n = 581), 1: 0.6 in Laigoma (n = 24), and 1: 2 in Fitako (n = 31). The relationship of thorax length, thorax width and cephalothorax length plus rostrum with body weight were strongly correlated (R2> 70%). The growth pattern of coconut crab in Daeo was negative allometric, while in Laigoma and Fitako were negative allometric and isometric.
{"title":"Sex Ratio and Growth Pattern of Coconut Crabs Birgus latro (Crustacea, Decapoda, Cianobitidae) in North Moluccas Province, Indonesia","authors":"Rugaya Serosero, S. Sulistiono, N. A. Butet, E. Riani","doi":"10.20884/1.oa.2019.15.1.527","DOIUrl":"https://doi.org/10.20884/1.oa.2019.15.1.527","url":null,"abstract":"Coconut crab (Birgus latro) is a crustacean that has a large size until four kilograms. The study aimed to analyze sex ratio and growth pattern including the relationship of thorax length - body weight, thorax width - body weight and cephalothorax length plus rostrum - body weight in Daeo (Morotai Island), Laigoma (South Halmahera District) and Fitako (North Halmahera District). The sex ratio was determined using χ2 test and the growth pattern was tested by the b value through t test. The results showed sex ratio of 1: 0.9 in Daeo (n = 581), 1: 0.6 in Laigoma (n = 24), and 1: 2 in Fitako (n = 31). The relationship of thorax length, thorax width and cephalothorax length plus rostrum with body weight were strongly correlated (R2> 70%). The growth pattern of coconut crab in Daeo was negative allometric, while in Laigoma and Fitako were negative allometric and isometric.","PeriodicalId":31102,"journal":{"name":"OmniAkuatika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45889599","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 : 2018-12-28DOI: 10.20884/1.OA.2017.13.2.161
W. K. A. Putra, T. S. Razai
The aims of the study was to determine the effect of recombinant growth hormone (rGH) on the growth of Silver pompano (Trachinotus blochii). This research was conducted using Complete Random Device) design experimentation i.e. control (non rGH), A (2 mg.kg-1), B (of 3 mg.kg-1), and C (4 mg.kg-1) of feed dry wieght (w/w) by four individual restating (each test 15 fish). Several parameter was observeb included absolute Growth, Specific Growth, feed convertion ratio, survival rate, mortality and water quality (DO, pH, temperature and salinity). The results showed that treatment C resulting an absolute growth of 19.9 g with a specific growth 0.71 g/ day). Feed convertion ratio was 5.8 while survival rate was 16.67% and Mortality reached 83.33 %. Results The analysis of water quality parameters are range DO (5.2-7.1mg L-1), salinity (25-28 ppt), pH (6.8-7.1) and temperature (30-31.2° C). Reviews These results indicate that rGH can increase the growth S. pompano fish compared to the control treatment.Keyword: recombinant Growth Hormone, Growth, Silver pompano
{"title":"Growth increase of Silver Pompano (Trachinotus blochii) Stimulated by Recombinant Growth Hormone (rGH) Addition on Their Commercial Feed","authors":"W. K. A. Putra, T. S. Razai","doi":"10.20884/1.OA.2017.13.2.161","DOIUrl":"https://doi.org/10.20884/1.OA.2017.13.2.161","url":null,"abstract":"The aims of the study was to determine the effect of recombinant growth hormone (rGH) on the growth of Silver pompano (Trachinotus blochii). This research was conducted using Complete Random Device) design experimentation i.e. control (non rGH), A (2 mg.kg-1), B (of 3 mg.kg-1), and C (4 mg.kg-1) of feed dry wieght (w/w) by four individual restating (each test 15 fish). Several parameter was observeb included absolute Growth, Specific Growth, feed convertion ratio, survival rate, mortality and water quality (DO, pH, temperature and salinity). The results showed that treatment C resulting an absolute growth of 19.9 g with a specific growth 0.71 g/ day). Feed convertion ratio was 5.8 while survival rate was 16.67% and Mortality reached 83.33 %. Results The analysis of water quality parameters are range DO (5.2-7.1mg L-1), salinity (25-28 ppt), pH (6.8-7.1) and temperature (30-31.2° C). Reviews These results indicate that rGH can increase the growth S. pompano fish compared to the control treatment.Keyword: recombinant Growth Hormone, Growth, Silver pompano","PeriodicalId":31102,"journal":{"name":"OmniAkuatika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48293066","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 : 2018-12-26DOI: 10.20884/1.OA.2018.14.3.595
R. Aryani, T. Apriadi
On the washing process of bauxite mining will produce waste, that was red mud. Those red mud will be streamed in pond of tailing bauxite. Eleocharis sp. has been pioneer plant in pond of tailing bauxite. The objective of this study was identify the epiphytes aquatic microfungi in pond of tailing bauxite, at Tanjungpinang, Bintan Island. Samples were collected by three different stations from Eleocharis sp. density with three samples points in each stations. In this research, the results of epiphyte aquatic microfungi were cultured got five genera and six different species of aquatic microfungi, such as Mucor sp., Curvularia sp. (1 and 2), Phialophora sp., Phoma sp., and Arthrographis sp.Keywords: aquatic microfungi, bauxite, Bintan, Eleocharis sp., tailing
{"title":"Inventory of Epiphytes Aquatic Microfungi in Pond of Tailing Bauxite in Tanjungpinang, Bintan Island, Riau Islands Province","authors":"R. Aryani, T. Apriadi","doi":"10.20884/1.OA.2018.14.3.595","DOIUrl":"https://doi.org/10.20884/1.OA.2018.14.3.595","url":null,"abstract":"On the washing process of bauxite mining will produce waste, that was red mud. Those red mud will be streamed in pond of tailing bauxite. Eleocharis sp. has been pioneer plant in pond of tailing bauxite. The objective of this study was identify the epiphytes aquatic microfungi in pond of tailing bauxite, at Tanjungpinang, Bintan Island. Samples were collected by three different stations from Eleocharis sp. density with three samples points in each stations. In this research, the results of epiphyte aquatic microfungi were cultured got five genera and six different species of aquatic microfungi, such as Mucor sp., Curvularia sp. (1 and 2), Phialophora sp., Phoma sp., and Arthrographis sp.Keywords: aquatic microfungi, bauxite, Bintan, Eleocharis sp., tailing","PeriodicalId":31102,"journal":{"name":"OmniAkuatika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48769232","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 : 2018-12-18DOI: 10.20884/1.OA.2018.14.3.548
A. Warsa, E. S. Kartamihardja, A. Wibowo
The feather back, Chitala lopis is an important economic fish, inhabit Kampar River and its population tend to decrease so that management and conservation efforts should be conducted. Limited data of the feather back is one of the problems in formulating the management of the population. Spawning potential ratio (SPR) approach is an option being used in the management of the fish stock in the poor data. The study aimed to analysis spawning potential ratio of the feather back in Kampar River, Riau. The research has been conducted in May, August and October 2016. The total length at first capture (Lc) of feather back was less than the total length at first maturity (Lm) with the SPR value of 5 %. This condition could impact to decreasing the feather back stock. The SPR value should increased more than 20 % so the feather back population would been stable. Regulation of the fisheries was mainly limited mesh size of the gillnet operated should be applied.
{"title":"Spawning Potential Ratio of Feather Back (Chitala Lopis) at Kampar River, Riau","authors":"A. Warsa, E. S. Kartamihardja, A. Wibowo","doi":"10.20884/1.OA.2018.14.3.548","DOIUrl":"https://doi.org/10.20884/1.OA.2018.14.3.548","url":null,"abstract":"The feather back, Chitala lopis is an important economic fish, inhabit Kampar River and its population tend to decrease so that management and conservation efforts should be conducted. Limited data of the feather back is one of the problems in formulating the management of the population. Spawning potential ratio (SPR) approach is an option being used in the management of the fish stock in the poor data. The study aimed to analysis spawning potential ratio of the feather back in Kampar River, Riau. The research has been conducted in May, August and October 2016. The total length at first capture (Lc) of feather back was less than the total length at first maturity (Lm) with the SPR value of 5 %. This condition could impact to decreasing the feather back stock. The SPR value should increased more than 20 % so the feather back population would been stable. Regulation of the fisheries was mainly limited mesh size of the gillnet operated should be applied.","PeriodicalId":31102,"journal":{"name":"OmniAkuatika","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45992049","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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