Success in the fish hatchery is influenced by natural feed. One of the natural freshwater feeds that have a high nutritional content and is easy to cultivate is Daphnia magna. The availability of D. magna at any time must be supported by daily feeding. Ulva lactuca macroalgae is one of the ingredients that have the potential to be used as D. magna feed because it has good nutrition and is abundantly available on the coast. This research was conducted for 17 days at the Integrated Laboratory of Madako Tolitoli University. The aim of the study was to determine the population growth of D. magna fed U. lactuca. D. magna was reared in a 25 x 25 x 30 cm aquarium containing 5 liters of green water and a stocking density of 20 individuals/L. The treatments tried were Treatment A = Without U. lactuca Soak (0 ml/L), Treatment B = U. lactuca Soak (3 ml/L), Treatment C = U. lactuca Soak (5 ml/L). The results showed that the administration of U. lactuca 5 ml/L (804.44 ind/L) had the highest population growth compared to the treatment of 3 ml/L immersion of U. lactuca (597.78 ind/L) and without administration of immersion of U. lactuca (482.22 ind/L). Treatment of U. Lactva 5 ml/L is effective in increasing Growth D. Magna and can be an alternative feed D. Magna whose availability is abundant in the coastal area.Keywords: Daphnia magna; growth; Ulva lactuca
{"title":"Evaluation of population growth of daphnia magna feeding Ulva lactuca","authors":"S. Laheng, Muh. Herjayanto, Ika Wahyuni Putri","doi":"10.29103/aa.v10i2.9869","DOIUrl":"https://doi.org/10.29103/aa.v10i2.9869","url":null,"abstract":"Success in the fish hatchery is influenced by natural feed. One of the natural freshwater feeds that have a high nutritional content and is easy to cultivate is Daphnia magna. The availability of D. magna at any time must be supported by daily feeding. Ulva lactuca macroalgae is one of the ingredients that have the potential to be used as D. magna feed because it has good nutrition and is abundantly available on the coast. This research was conducted for 17 days at the Integrated Laboratory of Madako Tolitoli University. The aim of the study was to determine the population growth of D. magna fed U. lactuca. D. magna was reared in a 25 x 25 x 30 cm aquarium containing 5 liters of green water and a stocking density of 20 individuals/L. The treatments tried were Treatment A = Without U. lactuca Soak (0 ml/L), Treatment B = U. lactuca Soak (3 ml/L), Treatment C = U. lactuca Soak (5 ml/L). The results showed that the administration of U. lactuca 5 ml/L (804.44 ind/L) had the highest population growth compared to the treatment of 3 ml/L immersion of U. lactuca (597.78 ind/L) and without administration of immersion of U. lactuca (482.22 ind/L). Treatment of U. Lactva 5 ml/L is effective in increasing Growth D. Magna and can be an alternative feed D. Magna whose availability is abundant in the coastal area.Keywords: Daphnia magna; growth; Ulva lactuca","PeriodicalId":431784,"journal":{"name":"Acta Aquatica: Aquatic Sciences Journal","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130420826","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}
Defta Ninggar Pramesti, A. Khan, L. P. Dewanti, M. R. Ismail
This study aimed to evaluate the number of catches and describe the biological aspects of sharks landing at Karangsong’s Port Indramayu, West Java. The study was conducted from July until August 2022 with the survey method. Data were taken by purposive sampling method including species, number of catches, sex, maturity level, total length, weight, fishing gear, and location. Data were analyzed to evaluate the catch while biological aspects were used to determine the condition of sharks. Analysis of biological aspects included sex ratio, length frequency, and the level of male sex maturity, as well as the length-weight relationship. A total of 407 sharks consisting of 7 species were dominated by mature sharks. Include Carcharinus dussumieri (33,2%), Carcharinus sorrah (23,8%), Carcharinus limbatus (0,2%), Sphyrna lewini (8,4%), Rhizoprionodon acutus (1,5%), Chiloscyllium punctatum (12,5%), Loxodon macrorhinus (8,4%). The results showed the frequency distribution of fish length and weight is 44 cm to 106 cm and 0,2 to 8,5 kg. Statistical test results showed that sharks had growth patterns negative allometric and Biological aspects showed an unbalanced sex ratio.Keywords: Allometric; Growth; Sex ratio; Shark
本研究旨在评估在西爪哇省Karangsong 's Port Indramayu上岸的鲨鱼的捕捞数量，并描述其生物学方面的情况。该研究于2022年7月至8月以调查法进行。采用有目的抽样的方法采集数据，包括鱼类种类、渔获量、性别、成熟度、总长度、重量、渔具和地点。数据分析用于评估捕获量，而生物学方面用于确定鲨鱼的状况。生物学方面的分析包括性别比、体长频率、雄性性成熟水平以及体长-体重关系。共有7种407条鲨鱼，以成熟鲨鱼为主。包括:dussumieri Carcharinus(33.2%)、Carcharinus sorrah(23.8%)、Carcharinus limbatus(0.2%)、Sphyrna lewini(8.4%)、acutus Rhizoprionodon(1.5%)、Chiloscyllium punctatum(12.5%)、Loxodon macrohinus(8.4%)。结果表明，鱼的体长和体重的频率分布为44 cm ~ 106 cm, 0,2 ~ 8,5 kg。统计检验结果表明，鲨鱼具有负异速生长模式，生物学方面表现出性别比例不平衡。关键词:异速生长的;经济增长;性别比例;鲨鱼
{"title":"The biological aspect of shark which landed in Karangsong’s Port, Indramayu, West Java","authors":"Defta Ninggar Pramesti, A. Khan, L. P. Dewanti, M. R. Ismail","doi":"10.29103/aa.v10i2.10353","DOIUrl":"https://doi.org/10.29103/aa.v10i2.10353","url":null,"abstract":"This study aimed to evaluate the number of catches and describe the biological aspects of sharks landing at Karangsong’s Port Indramayu, West Java. The study was conducted from July until August 2022 with the survey method. Data were taken by purposive sampling method including species, number of catches, sex, maturity level, total length, weight, fishing gear, and location. Data were analyzed to evaluate the catch while biological aspects were used to determine the condition of sharks. Analysis of biological aspects included sex ratio, length frequency, and the level of male sex maturity, as well as the length-weight relationship. A total of 407 sharks consisting of 7 species were dominated by mature sharks. Include Carcharinus dussumieri (33,2%), Carcharinus sorrah (23,8%), Carcharinus limbatus (0,2%), Sphyrna lewini (8,4%), Rhizoprionodon acutus (1,5%), Chiloscyllium punctatum (12,5%), Loxodon macrorhinus (8,4%). The results showed the frequency distribution of fish length and weight is 44 cm to 106 cm and 0,2 to 8,5 kg. Statistical test results showed that sharks had growth patterns negative allometric and Biological aspects showed an unbalanced sex ratio.Keywords: Allometric; Growth; Sex ratio; Shark","PeriodicalId":431784,"journal":{"name":"Acta Aquatica: Aquatic Sciences Journal","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116707841","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}
Silvia Zahara, Dedi Fazrianyah Putra, Z. Jalil, Syafruddin Chan
Dham Pulo Village, located in the Aceh Besar district, has been engaged in freshwater aquaculture for 10 years. Fishery activities in this village already have a supply chain of fish seeds produced independently of expansion activities. Technological applications have also been applied, such as fish feed engineering and the use of Internet of Things (IoT) technology in feeding methods. This study aims to examine the potential of Dham Pulo village as a pilot model for freshwater fishery technoparks and identify supporting factors in the development of village potential management as a technopark tourism destination in Aceh Besar District. This study uses qualitative methods with field observations, including interviews and documentation, as well as data analysis. The results of the study show that indicators of the potential of technopark villages include land and infrastructure capabilities, agroecology, creating added value, employment opportunities, government support, and research and development institutions, which show a value of 75.88% in the high category. Therefore, it can be concluded that Dham Pulo Village has high potential and is feasible to be used as a technopark area. However, to increase the potential and make Dham Pulo Village a technopark tourism village, formal regulatory support from the government is needed. Cultivators are limited in their development of land used for cultivation because it belongs to the government.Keywords: Dham Pulo; fisheries; freshwater; Potential; techno Park
{"title":"The potential analysis of a technopark in a freshwater fishery area in Dham Pulo Village, Aceh Besar","authors":"Silvia Zahara, Dedi Fazrianyah Putra, Z. Jalil, Syafruddin Chan","doi":"10.29103/aa.v10i2.9467","DOIUrl":"https://doi.org/10.29103/aa.v10i2.9467","url":null,"abstract":"Dham Pulo Village, located in the Aceh Besar district, has been engaged in freshwater aquaculture for 10 years. Fishery activities in this village already have a supply chain of fish seeds produced independently of expansion activities. Technological applications have also been applied, such as fish feed engineering and the use of Internet of Things (IoT) technology in feeding methods. This study aims to examine the potential of Dham Pulo village as a pilot model for freshwater fishery technoparks and identify supporting factors in the development of village potential management as a technopark tourism destination in Aceh Besar District. This study uses qualitative methods with field observations, including interviews and documentation, as well as data analysis. The results of the study show that indicators of the potential of technopark villages include land and infrastructure capabilities, agroecology, creating added value, employment opportunities, government support, and research and development institutions, which show a value of 75.88% in the high category. Therefore, it can be concluded that Dham Pulo Village has high potential and is feasible to be used as a technopark area. However, to increase the potential and make Dham Pulo Village a technopark tourism village, formal regulatory support from the government is needed. Cultivators are limited in their development of land used for cultivation because it belongs to the government.Keywords: Dham Pulo; fisheries; freshwater; Potential; techno Park","PeriodicalId":431784,"journal":{"name":"Acta Aquatica: Aquatic Sciences Journal","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133808574","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}
Betta fish is one of the most popular freshwater ornamental fish. This ornamental fish is very popular among people of various ages because it is easy to maintain. However, fans of these ornamental fish prefer male fish over females because male fish have aesthetic values and better and attractive colors and have higher profits. The experiment aims to determine the effect of yellow pumpkin seed extract on the successful of male betta fish larvae, as well as giving the best dose. The design used was a completely randomized design (CRD) with 4 treatments and 3 replications. The immersion doses used were control A, treatment B with a dose of 40 mg/L, treatment C with a dose of 80 mg/L and treatment D with a dose of 120 mg/L. Maintenance period for 30 days. The results showed that soaking using yellow pumpkin seed extract with different concentrations had a very significant effect on the percentage of males. The percentage of male betta fish ranged from 40.00–90.00%, the percentage of female betta fish ranged from 5.00–45.00%, and the percentage of intersex betta fish ranged from 5.00–15.00%. The best concentration of yellow pumpkin seed extract was 120 mg/L with the percentage of male betta fish 90.00% in treatment D.Keywords: Betta splendens Larvae; Immersion; Maleization; Pumpkin Seed Extract
{"title":"Evaluation of yellow pumpkin seed extract (Cucurbita moschata D) on the successful masculinization of betta fish (Betta splendens)","authors":"Sari Nur Fadhilah, T. Lestari, F. Farida","doi":"10.29103/aa.v10i2.10265","DOIUrl":"https://doi.org/10.29103/aa.v10i2.10265","url":null,"abstract":"Betta fish is one of the most popular freshwater ornamental fish. This ornamental fish is very popular among people of various ages because it is easy to maintain. However, fans of these ornamental fish prefer male fish over females because male fish have aesthetic values and better and attractive colors and have higher profits. The experiment aims to determine the effect of yellow pumpkin seed extract on the successful of male betta fish larvae, as well as giving the best dose. The design used was a completely randomized design (CRD) with 4 treatments and 3 replications. The immersion doses used were control A, treatment B with a dose of 40 mg/L, treatment C with a dose of 80 mg/L and treatment D with a dose of 120 mg/L. Maintenance period for 30 days. The results showed that soaking using yellow pumpkin seed extract with different concentrations had a very significant effect on the percentage of males. The percentage of male betta fish ranged from 40.00–90.00%, the percentage of female betta fish ranged from 5.00–45.00%, and the percentage of intersex betta fish ranged from 5.00–15.00%. The best concentration of yellow pumpkin seed extract was 120 mg/L with the percentage of male betta fish 90.00% in treatment D.Keywords: Betta splendens Larvae; Immersion; Maleization; Pumpkin Seed Extract","PeriodicalId":431784,"journal":{"name":"Acta Aquatica: Aquatic Sciences Journal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129432493","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}
Wairuhu River is disembogued on the sill of Poka-Galala, Ambon Bay. The estuary is affected by the coastal reclamation which led to the fester sedimentation. It triggers the problem of altering the shoreline and the dynamics of water movement, as well as the surrounding ecosystem. The modeling approach was applied to reconstruct the alterations around the estuary. The study aimed to estimate the changes on the shoreline, current patterns, and sediment transport patterns (suspended sediment), and to describe marine resources around the estuary of Wairuhu. MIKE 3 FM was utilized to reconstruct the pattern of flow and sediment transport changes, and coordinates plottings from satellite data were used to measure the coastline. The model was validated by using the data of tide and surface flow. The results showed the alteration pattern of the shoreline around the Wairuhu estuary occurred as a result of coastal reclamation. The flow validation (mooring and model) using RMSE was 0.38 which meant there was no difference between the model and mooring. By the model, the flow pattern that passed through the APG was following the tidal pattern. The changes in the tidal platform also occurred on the sediment transport pattern that formed the total distribution pattern of SSC (suspended sediment concentration). Several classes of macroflora and macrofauna were uncovered, such as Malacostraca, Echinoidea, Bivalvia, Asteroidea, Ophiuroidea, and Gastropoda.Keywords: Modeling; Poka-Galala sill; Sedimentation; Wairuhu River
{"title":"Reclamation and sedimentation impacts around the Wairuhu River estuary, Poka-Galala threshold","authors":"Y. A. Noya, G. Manuputty","doi":"10.29103/aa.v10i2.6880","DOIUrl":"https://doi.org/10.29103/aa.v10i2.6880","url":null,"abstract":"Wairuhu River is disembogued on the sill of Poka-Galala, Ambon Bay. The estuary is affected by the coastal reclamation which led to the fester sedimentation. It triggers the problem of altering the shoreline and the dynamics of water movement, as well as the surrounding ecosystem. The modeling approach was applied to reconstruct the alterations around the estuary. The study aimed to estimate the changes on the shoreline, current patterns, and sediment transport patterns (suspended sediment), and to describe marine resources around the estuary of Wairuhu. MIKE 3 FM was utilized to reconstruct the pattern of flow and sediment transport changes, and coordinates plottings from satellite data were used to measure the coastline. The model was validated by using the data of tide and surface flow. The results showed the alteration pattern of the shoreline around the Wairuhu estuary occurred as a result of coastal reclamation. The flow validation (mooring and model) using RMSE was 0.38 which meant there was no difference between the model and mooring. By the model, the flow pattern that passed through the APG was following the tidal pattern. The changes in the tidal platform also occurred on the sediment transport pattern that formed the total distribution pattern of SSC (suspended sediment concentration). Several classes of macroflora and macrofauna were uncovered, such as Malacostraca, Echinoidea, Bivalvia, Asteroidea, Ophiuroidea, and Gastropoda.Keywords: Modeling; Poka-Galala sill; Sedimentation; Wairuhu River","PeriodicalId":431784,"journal":{"name":"Acta Aquatica: Aquatic Sciences Journal","volume":"18 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120984040","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}
Sea cucumber (Holothuria scabra) contains lots of collagen and vitamin E for the pharmaceutical and cosmetic industries. H. scabra have high economic value. The price in the local market is IDR 400,000–1,200,000/kg and internationally it is IDR 500,000–IDR 5,000,000/kg dry weight. The level of exploitation is high, and it is suspected that there has been overfishing in several areas. Cultivation efforts need to be done to maintain the population in nature. The natural rate of gonad maturation and spawning in H. scabra broodstock is relatively slow, so efforts are needed to speed it up, among other things by administering hormones. This study aimed to stimulate (1) gonad maturation and (2) H. scabra spawning. The study used a completely randomized design (CRD) with 3 treatments and 3 replications in 2 stages using broodstock measuring 250–350 g/head. Stage 1: (1) Treatment A: without immersing the H. scabra in hormone solution, (2) Treatment B: immersing the H. scabra in the Oodev®/Oocyte developer dose of 1 mL/kg weight, and (3) Treatment C: soaking sea cucumber broodstock in Oodev® dose of 2 mL/kg weight. Stage 2: (1) without immersion of the broodstock in hormone solution, (2) immersion of the broodstock in Ovaprim® doses of 1 mL/kg weight. The data obtained were analyzed by analysis of variance. The results showed that immersion of H. scabra broodstock in Oodev® and ovaprim® was not successful in stimulating gonad maturation and spawning in H. scabra broodstock. The spawning behavior of sea cucumbers that were successfully observed included body movements such as writhing, coiling like a ball, sticking to walls, partially erecting their bodies, actively crawling, and being more active at night.Keywords: Gonad; Holothuria scabra; Oodev®; Ovaprim®; Spawning; Sea cucumber.
{"title":"Gonad maturation and spawning performance of the sand sea cucumber (Holothuria scabra) by Oodev® dan Ovaprim® administration","authors":"Dwi Ulta Sari, Muzahar Muzahar, Tri Yulianto, Dwi Septiani Putri, Aminatul Zahra, Shavika Miranti","doi":"10.29103/aa.v10i2.10123","DOIUrl":"https://doi.org/10.29103/aa.v10i2.10123","url":null,"abstract":"Sea cucumber (Holothuria scabra) contains lots of collagen and vitamin E for the pharmaceutical and cosmetic industries. H. scabra have high economic value. The price in the local market is IDR 400,000–1,200,000/kg and internationally it is IDR 500,000–IDR 5,000,000/kg dry weight. The level of exploitation is high, and it is suspected that there has been overfishing in several areas. Cultivation efforts need to be done to maintain the population in nature. The natural rate of gonad maturation and spawning in H. scabra broodstock is relatively slow, so efforts are needed to speed it up, among other things by administering hormones. This study aimed to stimulate (1) gonad maturation and (2) H. scabra spawning. The study used a completely randomized design (CRD) with 3 treatments and 3 replications in 2 stages using broodstock measuring 250–350 g/head. Stage 1: (1) Treatment A: without immersing the H. scabra in hormone solution, (2) Treatment B: immersing the H. scabra in the Oodev®/Oocyte developer dose of 1 mL/kg weight, and (3) Treatment C: soaking sea cucumber broodstock in Oodev® dose of 2 mL/kg weight. Stage 2: (1) without immersion of the broodstock in hormone solution, (2) immersion of the broodstock in Ovaprim® doses of 1 mL/kg weight. The data obtained were analyzed by analysis of variance. The results showed that immersion of H. scabra broodstock in Oodev® and ovaprim® was not successful in stimulating gonad maturation and spawning in H. scabra broodstock. The spawning behavior of sea cucumbers that were successfully observed included body movements such as writhing, coiling like a ball, sticking to walls, partially erecting their bodies, actively crawling, and being more active at night.Keywords: Gonad; Holothuria scabra; Oodev®; Ovaprim®; Spawning; Sea cucumber.","PeriodicalId":431784,"journal":{"name":"Acta Aquatica: Aquatic Sciences Journal","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116510146","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}
D. Yonarta, Deri Malik, M. Fitrani, Madyasta Anggana Rarassari
The value of catfish production in Indonesia has decreased drastically every year. Increasing stocking density can be a solution to increase production, but it will have a negative impact on decreasing water quality which will also disrupt catfish production. Therefore, it needs to be accompanied by the application of biofloc and aquaponics technology which plays a role in maintaining optimal water quality while providing additional natural feed (floc) which can reduce feed use and reduce water usage. This study aims to increase the production value of sangkuriang catfish through the application of biofloc and aquaponic systems. This research was conducted in October-November 2022 at the Raudhatul Ulum Sakatiga Agribusiness Group, Ogan Ilir Regency. This study was designed using a comparison experiment. The treatments given consisted of P0 (control), P1 (Maintenance of sangkuriang catfish aquaponic biofloc of kale plant), and P2 (Maintenance of Sangkuriang catfish aquaponic biofloc of lettuce plant). The results showed that P2 was the best treatment which resulted in absolute growth in weight and length of 7.18 g and 3.74 cm, survival of 98%, and growth in length of kale of 30.9 cm.Keywords: aquaponics; biofloc; sangkuriang catfish
{"title":"Application aquaponics biofloc of sangkuriang catfish (Clarias sp.)","authors":"D. Yonarta, Deri Malik, M. Fitrani, Madyasta Anggana Rarassari","doi":"10.29103/aa.v10i2.10787","DOIUrl":"https://doi.org/10.29103/aa.v10i2.10787","url":null,"abstract":"The value of catfish production in Indonesia has decreased drastically every year. Increasing stocking density can be a solution to increase production, but it will have a negative impact on decreasing water quality which will also disrupt catfish production. Therefore, it needs to be accompanied by the application of biofloc and aquaponics technology which plays a role in maintaining optimal water quality while providing additional natural feed (floc) which can reduce feed use and reduce water usage. This study aims to increase the production value of sangkuriang catfish through the application of biofloc and aquaponic systems. This research was conducted in October-November 2022 at the Raudhatul Ulum Sakatiga Agribusiness Group, Ogan Ilir Regency. This study was designed using a comparison experiment. The treatments given consisted of P0 (control), P1 (Maintenance of sangkuriang catfish aquaponic biofloc of kale plant), and P2 (Maintenance of Sangkuriang catfish aquaponic biofloc of lettuce plant). The results showed that P2 was the best treatment which resulted in absolute growth in weight and length of 7.18 g and 3.74 cm, survival of 98%, and growth in length of kale of 30.9 cm.Keywords: aquaponics; biofloc; sangkuriang catfish","PeriodicalId":431784,"journal":{"name":"Acta Aquatica: Aquatic Sciences Journal","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114806469","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}
Abstract Yellowstripe scad (Selaroides leptolepis) is a small pelagic fish. Yellowstripe scad is one of the catches of mini purse seine fishing gear which has important economic value. Continuous fishing activities for yellowstripe scad can disrupt the sustainability of yellowstripe scad. The purposes of this study were to determine size structure, growth parameters, length-weight relationship, size of the first caught (Lc50%), mortality rate, and utilization rate of yellowstripe scad. This research was conducted in June, July, and August 2022 at Pekalongan Archipelago Fishing Port. The data was collected by using a simple random sampling method, taking a 10% random sample of fish from one of the baskets caught by the mini purse seine boat landed at Pekalongan Archipelago Fishing Port. The data collected included total length (mmTL) and weight (gr). Data analysis used FiSAT II program with analysis ELEFAN I. The results obtained a sample of 1081 individuals with a length range of 94-152 mmTL and a weight of 9-54 grams. The size of the first caught (Lc50%) was 113.88 mmTL. The length-weight relationship of the yellowstripe scad was W = 0.0000054L3,1614 and the growth pattern was positive allometric. Von Bertalanffy growth parameters of yellowstripe scad were Lt = 158.03[1 - e(-0.56(t+0.184))] with L∞ was 158.03 mm; K was 0.56 and t0 was -0.184 years. The total mortality (Z) of yellowstripe scad was 1.86/year; natural mortality (M) was 0.77/year and fishing mortality (F) was 1.09/year. The exploitation (E) of yellowstripe scad was 0.58 which is included in the over-exploited category.Keywords: Exploitation; Growth; Mortality; Yellowstripe scad
{"title":"Growth and utilization rate of yellowstripe scad (Selaroides leptolepis, Cuvier 1833) landed at Pekalongan Archipelago Fishing Port","authors":"Ratna Fitri Nadhifa, Anhar Solichin, Arif Rahman","doi":"10.29103/aa.v10i2.10416","DOIUrl":"https://doi.org/10.29103/aa.v10i2.10416","url":null,"abstract":"Abstract Yellowstripe scad (Selaroides leptolepis) is a small pelagic fish. Yellowstripe scad is one of the catches of mini purse seine fishing gear which has important economic value. Continuous fishing activities for yellowstripe scad can disrupt the sustainability of yellowstripe scad. The purposes of this study were to determine size structure, growth parameters, length-weight relationship, size of the first caught (Lc50%), mortality rate, and utilization rate of yellowstripe scad. This research was conducted in June, July, and August 2022 at Pekalongan Archipelago Fishing Port. The data was collected by using a simple random sampling method, taking a 10% random sample of fish from one of the baskets caught by the mini purse seine boat landed at Pekalongan Archipelago Fishing Port. The data collected included total length (mmTL) and weight (gr). Data analysis used FiSAT II program with analysis ELEFAN I. The results obtained a sample of 1081 individuals with a length range of 94-152 mmTL and a weight of 9-54 grams. The size of the first caught (Lc50%) was 113.88 mmTL. The length-weight relationship of the yellowstripe scad was W = 0.0000054L3,1614 and the growth pattern was positive allometric. Von Bertalanffy growth parameters of yellowstripe scad were Lt = 158.03[1 - e(-0.56(t+0.184))] with L∞ was 158.03 mm; K was 0.56 and t0 was -0.184 years. The total mortality (Z) of yellowstripe scad was 1.86/year; natural mortality (M) was 0.77/year and fishing mortality (F) was 1.09/year. The exploitation (E) of yellowstripe scad was 0.58 which is included in the over-exploited category.Keywords: Exploitation; Growth; Mortality; Yellowstripe scad","PeriodicalId":431784,"journal":{"name":"Acta Aquatica: Aquatic Sciences Journal","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124059172","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}
In nature, there are many types of bacteria that can act as probiotics. These bacteria can come from soil, water, plants or even the digestive tract of animals. This study aims to analyze the biochemical characteristics of probiotic candidate bacteria originating from the digestive tract of giant prawns. The method used is a descriptive explorative method to perform biochemical analysis of the types of probiotic bacteria derived from jerbung shrimp. The biochemical analysis included the Catalase test, Oxidase test, Urea test, Citrate test, TSIA, Methyl red, Voges-Proskaeurs, and sugar fermentation test (D-Glucose, Sucrose, Inositol, Manisitol. Laboratory analysis results showed that the isolated bacteria had morphological characteristics rod-shaped, gram-positive, does not produce catalase and oxidase enzymes, but can produce citric enzymes. These bacteria are acidic, capable of fermenting glucose, sucrose, inositol, and mannitol. The conclusion of this study, probiotic candidate bacteria from the test results showed compatibility with Lactobacillus sp bacteria.Keywords: isolation; probiotics; shrimp
{"title":"Biochemical analysis of candidate probiotic bacteria was isolated from the digestive tract of the Banana shrimp (Penaeus merguiensis)","authors":"Hendra Raharja, A. Zubaidah, D. Prasetyo","doi":"10.29103/aa.v10i2.9062","DOIUrl":"https://doi.org/10.29103/aa.v10i2.9062","url":null,"abstract":"In nature, there are many types of bacteria that can act as probiotics. These bacteria can come from soil, water, plants or even the digestive tract of animals. This study aims to analyze the biochemical characteristics of probiotic candidate bacteria originating from the digestive tract of giant prawns. The method used is a descriptive explorative method to perform biochemical analysis of the types of probiotic bacteria derived from jerbung shrimp. The biochemical analysis included the Catalase test, Oxidase test, Urea test, Citrate test, TSIA, Methyl red, Voges-Proskaeurs, and sugar fermentation test (D-Glucose, Sucrose, Inositol, Manisitol. Laboratory analysis results showed that the isolated bacteria had morphological characteristics rod-shaped, gram-positive, does not produce catalase and oxidase enzymes, but can produce citric enzymes. These bacteria are acidic, capable of fermenting glucose, sucrose, inositol, and mannitol. The conclusion of this study, probiotic candidate bacteria from the test results showed compatibility with Lactobacillus sp bacteria.Keywords: isolation; probiotics; shrimp","PeriodicalId":431784,"journal":{"name":"Acta Aquatica: Aquatic Sciences Journal","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130126653","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}
Fadila Aditia Putri Pratama, Yuniarti Ms, S. Zallesa, S. Sunarto
Environmental conditions that are quite important in the growth of mangroves are the type of sediment, organic matter, and water quality because the organic matter produced can be useful for mangrove fertility. This study aims to determine the type of sediment, the percentage of total organic matter, water quality, mangrove density, and determine the relationship between sediment types, total organic matter, and water quality on mangrove density on Tunda Island, Serang, Banten. This study used a survey method while collecting data using a purposive sampling method. Mangrove density was obtained through the line transect plot method. The sediment type test used the dry sieving method, the total organic matter (BOT) test used the loss on ignition (LOI) method, the statistical test used the multiple correlation method. All data was then analyzed in a quantitative descriptive manner. The results of the study are that the type of sediment in Tunda Island mangroves is dominated by silty sand and sand. The total organic matter contained in mangrove sediments ranges from 2.40% - 3.62% which is included in the moderate to high category. Salinity values ranged from 31 - 34.33 ppt included in the high category. The pH value ranges from 7.33 - 7.70 which is included in the good category for mangrove growth. Temperature values ranging from 27.37oC - 31.63oC are included in the good category for mangrove growth because they can still grow and develop normally. The mangrove density level is dominated by the dense category, which is 2,400 ind/Ha at station 1 and 1,700 ind/Ha at station 2, and the rare category is 1,000 ind/Ha at station 3 and 900 ind/Ha at station 4. There is a significant relationship between sediment type, total organic matter, water quality with mangrove density.Keywords: BOT; Mangroves; Sediment; Water Quality
{"title":"Relationship between sediment type, total organic matter, and water quality on mangrove density on Tunda Island, Serang Banten","authors":"Fadila Aditia Putri Pratama, Yuniarti Ms, S. Zallesa, S. Sunarto","doi":"10.29103/aa.v10i1.10823","DOIUrl":"https://doi.org/10.29103/aa.v10i1.10823","url":null,"abstract":"Environmental conditions that are quite important in the growth of mangroves are the type of sediment, organic matter, and water quality because the organic matter produced can be useful for mangrove fertility. This study aims to determine the type of sediment, the percentage of total organic matter, water quality, mangrove density, and determine the relationship between sediment types, total organic matter, and water quality on mangrove density on Tunda Island, Serang, Banten. This study used a survey method while collecting data using a purposive sampling method. Mangrove density was obtained through the line transect plot method. The sediment type test used the dry sieving method, the total organic matter (BOT) test used the loss on ignition (LOI) method, the statistical test used the multiple correlation method. All data was then analyzed in a quantitative descriptive manner. The results of the study are that the type of sediment in Tunda Island mangroves is dominated by silty sand and sand. The total organic matter contained in mangrove sediments ranges from 2.40% - 3.62% which is included in the moderate to high category. Salinity values ranged from 31 - 34.33 ppt included in the high category. The pH value ranges from 7.33 - 7.70 which is included in the good category for mangrove growth. Temperature values ranging from 27.37oC - 31.63oC are included in the good category for mangrove growth because they can still grow and develop normally. The mangrove density level is dominated by the dense category, which is 2,400 ind/Ha at station 1 and 1,700 ind/Ha at station 2, and the rare category is 1,000 ind/Ha at station 3 and 900 ind/Ha at station 4. There is a significant relationship between sediment type, total organic matter, water quality with mangrove density.Keywords: BOT; Mangroves; Sediment; Water Quality","PeriodicalId":431784,"journal":{"name":"Acta Aquatica: Aquatic Sciences Journal","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131311029","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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