Depik Jurnal最新文献_第4页

Impact of ocean noise on mammalian life (case study: Samarinda waters) 海洋噪音对哺乳动物的影响(以萨玛林达水域为例)

Depik Jurnal Pub Date : 2023-04-20 DOI: 10.13170/depik.12.1.24855

S. Deswati, M. Syahrir, M. Mujiyanto

引用次数: 0

Biological aspects of squid (Loligo edulis) in the waters of Eastern North Sumatra, Indonesia 印度尼西亚北苏门答腊岛东部海域鱿鱼的生物学特征

Depik Jurnal Pub Date : 2023-04-20 DOI: 10.13170/depik.12.1.28602

Dadan Zulkifli, Ratna Suharti, Yuni Fast Track Anjeli Sihombing, Meuthia Aula Jabbar, Siti Mira Rahayu, Aditya Bramana, H. Irawan, Deni Aulia

{"title":"Biological aspects of squid (Loligo edulis) in the waters of Eastern North Sumatra, Indonesia","authors":"Dadan Zulkifli, Ratna Suharti, Yuni Fast Track Anjeli Sihombing, Meuthia Aula Jabbar, Siti Mira Rahayu, Aditya Bramana, H. Irawan, Deni Aulia","doi":"10.13170/depik.12.1.28602","DOIUrl":"https://doi.org/10.13170/depik.12.1.28602","url":null,"abstract":"Squid is one of the non-fish resources that have economic value and is a target species in demersal fisheries activities with squid fishing gear and stick-held deep net. This research aims to determine the biological aspects of squid (Loligo edulis) such as length frequency distribution, length-weight relationship, sex ratio, gonadal maturity level, gonadal maturity index, size at first caught, and size at first maturity of the gonads. The method used in this research was a descriptive survey. The sample collection method used systematic random sampling and purposive sampling techniques. This observation was carried out on March 7 to July 30, 2022, at the Belawan Ocean Fishing Port and Tanjung Balai Port. The results showed that the average length distribution of squid was 17.73 cm. The relationship between the length and weight of squid is negative allometric. The sex ratio is 1:1.05. The negative allometric growth pattern is dominated by Gonadal Maturity Level (GML) I and GML II. The highest GML value for male squid was 2.06% at GML III, and the highest GML value for female squid was 1.92% at GML III. The average size of the caught squid length (Lc) is 10.42 cm. The size of the first gonad maturity (Lc) was 13.32 cm.Keywords:SquidBiological aspectsFisheries aspectManagement effort","PeriodicalId":30450,"journal":{"name":"Depik Jurnal","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79986717","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}

引用次数: 0

Effect of water acidity on the growth performance, survival, and hematology condition of the barramundi fish Lates calcarifer (Bloch, 1790) fingerling 水酸度对barramundi鱼Lates calcarifer (Bloch, 1790)鱼种生长性能、存活和血液学状况的影响

Depik Jurnal Pub Date : 2023-04-19 DOI: 10.13170/depik.12.1.31246

Mustika Marzah Fitriana, N. Fadli, Z. Muchlisin

{"title":"Effect of water acidity on the growth performance, survival, and hematology condition of the barramundi fish Lates calcarifer (Bloch, 1790) fingerling","authors":"Mustika Marzah Fitriana, N. Fadli, Z. Muchlisin","doi":"10.13170/depik.12.1.31246","DOIUrl":"https://doi.org/10.13170/depik.12.1.31246","url":null,"abstract":"Global warming is caused by increased carbon emissions into the atmosphere resulting from burning oil, gas, and other fossil fuels. Subsequently, the carbon gas enters the waters through a diffusion process facilitated by the concentration of gases in the air, which is higher than in the waters. The outcome of this process is a decrease in water acidity, leading to a lower pH, which can disrupt the life of aquatic biotas. Therefore, this study aims to analyze the effect of decreasing of pH on the growth, survival, and physiological conditions of barramundi (Lates calcarifer). To achieve this objective, seven pH levels were tested, namely pH of 7.24 (control), pH 6.74, pH 6.24, pH 5.74, pH 5.24, pH 4.74, and pH 4.24. Every treatment was performed with four replications, and the fish was reared for 30 days in the respective tested pH. The reared madia is sea water with a salinity of 22 ppt. The experiment was conducted in the laboratory of fish breeding Faculty of Marine and Fisheries, Universitas Syiah. The results showed that a decreasing in pH had a significant effect on the growth performance and hematological condition of barramundi (P0.05), but its had no significant effect on survival (P0.05). The experimental fish could survive at pH 4.24, but their growth and hematological conditions were disrupted below 6.24. Therefore, it was concluded that the lower threshold value of pH for barramundi was 6.24.Keywords:Global warmingOcean aciditypHFisheries productionPhysiological disturbance","PeriodicalId":30450,"journal":{"name":"Depik Jurnal","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80899148","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}

引用次数: 1

Diversity and distribution of fish in the Lokop river, Leuser Ecosystem Area, Indonesia 印度尼西亚洛伊泽生态系统Lokop河鱼类的多样性和分布

Depik Jurnal Pub Date : 2023-04-19 DOI: 10.13170/depik.12.1.30181

Furqan Maghfiriadi, F. Firdus, M. Sarong, I. Zulfahmi, Agung Setia Batubara

{"title":"Diversity and distribution of fish in the Lokop river, Leuser Ecosystem Area, Indonesia","authors":"Furqan Maghfiriadi, F. Firdus, M. Sarong, I. Zulfahmi, Agung Setia Batubara","doi":"10.13170/depik.12.1.30181","DOIUrl":"https://doi.org/10.13170/depik.12.1.30181","url":null,"abstract":"Lokop is one of the villages in Serbajadi District, East Aceh Regency, Aceh Province. The village has a watershed named the river Lokop. This river is located in the Leuser Ecosystem Area which is inhabited by various aquatic biota, especially fish, with the level of diversity and distribution patterns that need to be studied and analyzed conoftened. This study used the purposive sampling method, with the parameters being the level of diversity and distribution patterns of fish in the Lokop river. Data collection was carried out at 5 observation stations based on the typology of river habitat, each station was divided into three substations representing parts of the basin, river bank and river basin approximately 50 m apart. Fish sampling is carried out at each station using a plot of 10 x 10 m2. The number of plots at each station is 9 plots with a total of 45 plots. The results showed that the diversity index (H') value of fish in the Lokop river was 2.39 in the moderate category and the distribution pattern of fish in the Lokop river has a uniform pattern and clusters. Out of a total of 17 species obtained, 8 species (47%) were clustred, 8 species (47%) were uniformly distributed and 1 species (6%) could not be analyzed because only one individual was found.Keywords:FishRiverDiversityDistribution","PeriodicalId":30450,"journal":{"name":"Depik Jurnal","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76956917","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}

引用次数: 0

Feasibility of using fish visceral trash in a polyculture system for enhancing the growth performances of giant gourami (Osphronemus gouramy) and redclaw crayfish (Cherax quadricarinatus) 鱼内脏垃圾在混养系统中提高巨gouramy和红爪螯虾生长性能的可行性

Depik Jurnal Pub Date : 2023-04-18 DOI: 10.13170/depik.12.1.28381

Agus Putra AS, Afrah Junita, M. Jamil

{"title":"Feasibility of using fish visceral trash in a polyculture system for enhancing the growth performances of giant gourami (Osphronemus gouramy) and redclaw crayfish (Cherax quadricarinatus)","authors":"Agus Putra AS, Afrah Junita, M. Jamil","doi":"10.13170/depik.12.1.28381","DOIUrl":"https://doi.org/10.13170/depik.12.1.28381","url":null,"abstract":"Giant gourami and redclaw crayfish are among popular freshwater organisms with significant potential for aquaculture due to their ease of cultivation, resistance to diseases, and high economic value. Therefore, this study aimed to evaluate the feasibility of using fish visceral trash (FVT) in artificial diets to enhance the growth performances of giant gourami (Osphronemus gouramy) and redclaw crayfish (Cherax quadricarinatus) in a polyculture system. Giant gourami juveniles (3.62±0.86 cm and 3.74±1.15 g) and redclaw crayfish (3.05±0.35 cm and 6.41±0.29 g) were divided into four groups and cultured in 100 L aquarium. Each group was fed twice daily with diets containing 0%, 10%, 20%, and 30% FVT/kg diet. Furthermore, growth performances were assessed in all samples at 14 days intervals over a period of eight weeks. The results showed that diets prepared with 30% FVT significantly affected the growth rate of giant gourami juveniles, while those comprising 20% enhanced the growth of redclaw crayfish. Total length, body weight, specific growth rate, and weight gain significantly increased in samples fed with the experimental compounded diets. Based on the observations, it is suggested that using FVT compounded diets tends to improve growth performances in a polyculture system.Keywords:Giant gouramiGrowth performanceRedclaw crayfishPolycultureTrash fish","PeriodicalId":30450,"journal":{"name":"Depik Jurnal","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82499887","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}

引用次数: 0

Additional of EM4 and molasses in feeds on the growth and survival rate of snakehead (Channa striata) 饲料中添加EM4和糖蜜对黑鱼生长和成活率的影响

Depik Jurnal Pub Date : 2023-04-18 DOI: 10.13170/depik.12.1.27330

C. Dewi, Usman Maulana, S. A. El Rahimi, I. Ismarica

引用次数: 0

FRONT MATTER 前页

Depik Jurnal Pub Date : 2023-01-10 DOI: 10.13170/depik.12.1.31959

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Description scleractinian coral from Miang Island, East Kalimantan 描述产自东加里曼丹的Miang岛的硬珊瑚

Depik Jurnal Pub Date : 2022-12-27 DOI: 10.13170/depik.11.3.29277

Rosdianto Rosdianto, S. A. El Rahimi, A. Kryk, S. Arsad, O. M. Luthfi, M. Luthfi

{"title":"Description scleractinian coral from Miang Island, East Kalimantan","authors":"Rosdianto Rosdianto, S. A. El Rahimi, A. Kryk, S. Arsad, O. M. Luthfi, M. Luthfi","doi":"10.13170/depik.11.3.29277","DOIUrl":"https://doi.org/10.13170/depik.11.3.29277","url":null,"abstract":"The exact number of coral species in Indonesia is not unclear yet, in 2002 the coral taxonomist, JEN Veron, stated 590 species, and it was supported by an Indonesian coral taxonomist, Suharsono, eight years later. The current coral species data is 605 but it is from Coral Triangle Region area (CT). The eastern of Indonesia, which is located in the Coral Triangle Region, has received a lot of attention from coral researchers, due to coral species that have been described. On the other hand, the coral reef from the western part of Indonesia, including in the East Kalimantan, has not been explored much in recent times. Through the ecoregion view, E. Kalimantan region is clustered into ecoregion 43 (Sulu Sea) which has 540 coral species. Miang Island is one of the inhabited islands from E. Kalimantan, and has an unexplored coral reef ecosystem. The method had been used in this research is descriptive, which uses photos of live corals to describe colony characteristics corals. The results of the study have described 36 species of coral and several invertebrates that make up coral reefs on Miang Island.Keywords:Hard coralAcroporaPoritesIdentificationPulau Miang","PeriodicalId":30450,"journal":{"name":"Depik Jurnal","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77801319","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}

引用次数: 0

Detection parasites of Indian Mackerel (Rastrelliger kanagurta) in North Sumatera, Indonesia 印度尼西亚北苏门答腊印度鲭鱼寄生虫的检测

Depik Jurnal Pub Date : 2022-12-27 DOI: 10.13170/depik.11.3.26814

E. Yusni, L. S. Handayani

{"title":"Detection parasites of Indian Mackerel (Rastrelliger kanagurta) in North Sumatera, Indonesia","authors":"E. Yusni, L. S. Handayani","doi":"10.13170/depik.11.3.26814","DOIUrl":"https://doi.org/10.13170/depik.11.3.26814","url":null,"abstract":"The purpose of this study was to identify ectoparasites and their prevalence infecting Rastrelliger kanagurta in North Sumatera, Medan. So far, people use this fish as a processed product. The method used in this study is a survey method with direct collection at the research site. Samples were taken using random sampling technique. Sampling was carried out in five places in Belawan with the number of samples studied as many as 30 individuals with an average length of 25.3 cm and a weight of 193.7 grams. Identification was carried out in a laboratory using a light microscope at the Faculty of Agriculture, University of North Sumatra. The results of this study found seven types of parasites that infect the surface in the muscles, fins and gills. The parasites found in their respective prevalence were infected Dactylogyrus sp. 13.33% was found in muscus, Austrobdella sp. 30% found in fin. While the parasites found in the gills were Zoothamnium sp as much as 6.67%, Diphyllobothrium sp as much as 16.67%, Rhadinorynchus sp. 53.33%, Camallanus sp. 20% and Anisakis sp. 3.33%. Rhadinorynchus sp. is the parasite with the highest prevalence rate, found on the scales, gills and fins respectively of mackerel.","PeriodicalId":30450,"journal":{"name":"Depik Jurnal","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84326044","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}

引用次数: 0

Analysis of changes in mangrove ecosystems in Banda Aceh city 17 years after the 2004 tsunami 2004年海啸17年后班达亚齐市红树林生态系统变化分析

Depik Jurnal Pub Date : 2022-12-20 DOI: 10.13170/depik.11.3.28515

Maulana Gogo, Faisal Abdullah, S. Syahreza, Muhammad Budi

{"title":"Analysis of changes in mangrove ecosystems in Banda Aceh city 17 years after the 2004 tsunami","authors":"Maulana Gogo, Faisal Abdullah, S. Syahreza, Muhammad Budi","doi":"10.13170/depik.11.3.28515","DOIUrl":"https://doi.org/10.13170/depik.11.3.28515","url":null,"abstract":"Mangrove has the most important role especially in the coastal area. The existence of mangrove habitats in Banda Aceh which got decreasing and loss after tsunami disaster in 2004. The purpose of this study was to the distribution of mangrove in Banda Aceh divided into five (5) sub districts including Jaya Baru, Kuta Alam, KutaRaja, Meuraxa, and Syiah Kuala. This study the mangrove changes after tsunami 2004, began from 2005, 2010, 2015, and 2022. The main data used in this study are Landsat 5 and Sentinel 2A images. Methods of image processing applied in this study are NDVI analysis and supervised classification-based image classification. Theresults are able to show the changes of mangrove area in Banda Aceh from 2004 to 2022. Mangrove area in 2005 is 28.89 ha, 2010 is 81.38 ha, 2015 is 180.27 ha, and 2022 is 121.34 ha. It can be seen that there is a decreasing of mangrove area from 2015 to 2022. The analysis results are also able to show that Kuta raja sub district has the largest mangrove area of 60.11 ha or 49.54 % of the overall area. According to the overall results, it can be said that remote sensing satellite images such as Landsat and Sentinel 2A are very useful in conducting the spatio-temporal research from the long-term periods. This study is hoped to be able to become a reference data in efforts to restore the mangrove in Banda Aceh in order to create the sustainable ecosystem area.Keywords:Mangrove ecosystemsRestorationNDVISupervised classificationSpatio temporal","PeriodicalId":30450,"journal":{"name":"Depik Jurnal","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84570169","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}

引用次数: 0