Pub Date : 2020-03-08DOI: 10.14710/IK.IJMS.25.1.31-38
A. Indarjo, Ga Salim, Mufrida Zein, S. Susiyanti, P. A. Soejarwo, Christine Dyta Nugraeni, S. Bija, Y. Pham
The Mudskipper ( P. barbarus ) lives in intertidal mud flats and it becomes an indicator of water quality. The transformation of construction and water pollution in this area is important to investigate due to interaction of fishery industry, home residence, and market area surrounding areas. The aim of this research was to analyze the characteristic of Von Bertalanffy growth, allometric, condition index, and mortality of the P. barbarus in KKMB, Tarakan city. The research was designed by using descriptive quantitative method. The sampling process used purposive sampling. The sampling was conducted for 12 times plot.transect -1 in the extension area of KKMB, Tarakan city with a total area is 12 Ha, plot.transect -1 area is 10x10 m 2 , and distance between each transect is 10 m 2 . Sampling was carried out in survey area and laboratory to identify the gender and calculate total length and weight. The result showed the growth of male mudskipper ( L ∞ = 26.545 cm) and female ( L ∞ = 17.594 cm) . Their size and the total population was decreased. The characteristic of male mudskipper growth was positive allometric, then female was negative allometric. The natural mortality and the catch of male mudskipper were higher than female.
{"title":"Characteristics of Von Bertalanfy Growth, Allometric, Condition Index And Mortality of Periophthalmus barbarus in Mangrove and Probiotics Conservation Area (KKMB), Tarakan, North Kalimantan","authors":"A. Indarjo, Ga Salim, Mufrida Zein, S. Susiyanti, P. A. Soejarwo, Christine Dyta Nugraeni, S. Bija, Y. Pham","doi":"10.14710/IK.IJMS.25.1.31-38","DOIUrl":"https://doi.org/10.14710/IK.IJMS.25.1.31-38","url":null,"abstract":"The Mudskipper ( P. barbarus ) lives in intertidal mud flats and it becomes an indicator of water quality. The transformation of construction and water pollution in this area is important to investigate due to interaction of fishery industry, home residence, and market area surrounding areas. The aim of this research was to analyze the characteristic of Von Bertalanffy growth, allometric, condition index, and mortality of the P. barbarus in KKMB, Tarakan city. The research was designed by using descriptive quantitative method. The sampling process used purposive sampling. The sampling was conducted for 12 times plot.transect -1 in the extension area of KKMB, Tarakan city with a total area is 12 Ha, plot.transect -1 area is 10x10 m 2 , and distance between each transect is 10 m 2 . Sampling was carried out in survey area and laboratory to identify the gender and calculate total length and weight. The result showed the growth of male mudskipper ( L ∞ = 26.545 cm) and female ( L ∞ = 17.594 cm) . Their size and the total population was decreased. The characteristic of male mudskipper growth was positive allometric, then female was negative allometric. The natural mortality and the catch of male mudskipper were higher than female.","PeriodicalId":13381,"journal":{"name":"ILMU KELAUTAN: Indonesian Journal of Marine Sciences","volume":"18 1","pages":"31-38"},"PeriodicalIF":0.0,"publicationDate":"2020-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84721121","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 : 2020-03-08DOI: 10.14710/ik.ijms.25.1.39-44
Andri Wijayanto, I. Widowati, Tjahjo Winanto
Gelidium latifolium is one of red seaweed types potentially can be developed as an industrial raw material. Since Gelidium is currently taken from ocean, the availability of seaweed from aquaculture is necessary to overcome the small number of its availability in nature. In Indonesia, G. latifolium cultivation has not been carried out so that domestication is required. The use of macro and micro nutrients in growth media is essentially needed for the domestication process. Domestication requires fast media and place for growth. The purpose of this study is to determine the growth of biomass and the survival of G. latifolium in different culture media. The study was conducted in a semi-outdoor research laboratory. The method used in this research is laboratory experimental method and Completely Randomized Design (CRD) with the treatment applied using 3 types of culture media (Urea: Za: TSP) by comparison (A) 100: 50: 50% (2 g.L -1 ), (B) 75: 75: 50% (2 g.L -1 ) and (C) 75: 50: 75% (2 g.L -1 ), with 3 replications. The seaweed was kept in 10 L of water in aeration equipped aquarium and filled with 10 g of G. latifolium on each treatment. The best growth rate of G. latifolium biomass is 5.67± 0.58 g and 100±0% are survived in C culture medium with a concentration of 75% Urea: 50% ZA: 75% TSP (2 g.L -1 ).
{"title":"Domestication of Red Seaweed (Gelidium latifolium) in Different Culture Media","authors":"Andri Wijayanto, I. Widowati, Tjahjo Winanto","doi":"10.14710/ik.ijms.25.1.39-44","DOIUrl":"https://doi.org/10.14710/ik.ijms.25.1.39-44","url":null,"abstract":"Gelidium latifolium is one of red seaweed types potentially can be developed as an industrial raw material. Since Gelidium is currently taken from ocean, the availability of seaweed from aquaculture is necessary to overcome the small number of its availability in nature. In Indonesia, G. latifolium cultivation has not been carried out so that domestication is required. The use of macro and micro nutrients in growth media is essentially needed for the domestication process. Domestication requires fast media and place for growth. The purpose of this study is to determine the growth of biomass and the survival of G. latifolium in different culture media. The study was conducted in a semi-outdoor research laboratory. The method used in this research is laboratory experimental method and Completely Randomized Design (CRD) with the treatment applied using 3 types of culture media (Urea: Za: TSP) by comparison (A) 100: 50: 50% (2 g.L -1 ), (B) 75: 75: 50% (2 g.L -1 ) and (C) 75: 50: 75% (2 g.L -1 ), with 3 replications. The seaweed was kept in 10 L of water in aeration equipped aquarium and filled with 10 g of G. latifolium on each treatment. The best growth rate of G. latifolium biomass is 5.67± 0.58 g and 100±0% are survived in C culture medium with a concentration of 75% Urea: 50% ZA: 75% TSP (2 g.L -1 ).","PeriodicalId":13381,"journal":{"name":"ILMU KELAUTAN: Indonesian Journal of Marine Sciences","volume":"66 1","pages":"39-44"},"PeriodicalIF":0.0,"publicationDate":"2020-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83148748","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 : 2020-03-08DOI: 10.14710/IK.IJMS.25.1.15-22
Y. Sugianti, M. Mujiyanto
Damage to seagrass beds in Panjang Island, Banten, has increased every year. The most significant decline occurred at an interval of 2000-2005 with a decrease of about 22.9 ha. Seagrass damage continued to increase at the year between 1989-2002 as a result of natural stone mining and coastal reclamation activities to become industrial areas and ports. The objective of this study was to determine the characteristics of the species and current status of seagrass communities in Panjang Island waters, Banten. Analysis of seagrass data included identification of species, frequency, density, percent coverage, and important value index. Based on these results, it was found three species of seagrass on Panjang Island, Banten, including species of Enhalus acoroides, Cymodocea serrulata, and Syrongodium isoetifolium. The percentage of seagrass coverage at five different research stations, the highest percentage of seagrass coverage was at station IV with a percentage of coverage of 48.94% and the lowest coverage was obtained at station V of 10.28%. The calculation of the importance value index (INP) of seagrass in Panjang Island waters, Banten, showed that the highest INP value was found in the Cymodocea serrulata seagrass species which was 41.47 and the lowest was found in the Syrongodium isoetifolium seagrass species which was 16.81. PCA analysis was also conducted to determine the relationship of seagrass density with chemical physics parameters. The results obtained showed the condition of seagrass ecosystems in Panjang Island waters, Banten, which was at a level of moderate to severe damage. The results of PCA analysis showed that water temperature, nitrate concentration, DO, and TSS greatly influenced the density of seagrass in these waters.
{"title":"Current Status and Species Diversity of Seagrass in Panjang Island, Banten","authors":"Y. Sugianti, M. Mujiyanto","doi":"10.14710/IK.IJMS.25.1.15-22","DOIUrl":"https://doi.org/10.14710/IK.IJMS.25.1.15-22","url":null,"abstract":"Damage to seagrass beds in Panjang Island, Banten, has increased every year. The most significant decline occurred at an interval of 2000-2005 with a decrease of about 22.9 ha. Seagrass damage continued to increase at the year between 1989-2002 as a result of natural stone mining and coastal reclamation activities to become industrial areas and ports. The objective of this study was to determine the characteristics of the species and current status of seagrass communities in Panjang Island waters, Banten. Analysis of seagrass data included identification of species, frequency, density, percent coverage, and important value index. Based on these results, it was found three species of seagrass on Panjang Island, Banten, including species of Enhalus acoroides, Cymodocea serrulata, and Syrongodium isoetifolium. The percentage of seagrass coverage at five different research stations, the highest percentage of seagrass coverage was at station IV with a percentage of coverage of 48.94% and the lowest coverage was obtained at station V of 10.28%. The calculation of the importance value index (INP) of seagrass in Panjang Island waters, Banten, showed that the highest INP value was found in the Cymodocea serrulata seagrass species which was 41.47 and the lowest was found in the Syrongodium isoetifolium seagrass species which was 16.81. PCA analysis was also conducted to determine the relationship of seagrass density with chemical physics parameters. The results obtained showed the condition of seagrass ecosystems in Panjang Island waters, Banten, which was at a level of moderate to severe damage. The results of PCA analysis showed that water temperature, nitrate concentration, DO, and TSS greatly influenced the density of seagrass in these waters.","PeriodicalId":13381,"journal":{"name":"ILMU KELAUTAN: Indonesian Journal of Marine Sciences","volume":"29 1","pages":"15-22"},"PeriodicalIF":0.0,"publicationDate":"2020-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81057404","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 : 2019-12-02DOI: 10.14710/ik.ijms.24.4.159-163
E. Wibowo, E. S. Palupi, I. Puspitasari, Atang Atang
Nereis sp. contains amino acids and unsaturated fatty acids that can improve the quality of gamete stem cells and the quality of the resulting larvae. Nereis sp. can increase gamete cell maturation in the parent shrimp up to 70%. This triggers the exploitation these worms excessively in nature since there are no cultivation efforts to meet their needs. This condition encourages research on the biological aspects of Nereis sp. to complement the information that can support the cultivation of the worms. This research was conducted on Nereis sp. from the Jeruklegi Cilacap area with different types of feed. This study aims to determine the metabolic rate of the worms Nereis sp. at different sizes by giving different types of feed. This research use immature Nereis sp. which was maintained at 15 ppt salinity with three different body weight (0.3-0.6 g; 1.1-1.3 g and 1.8-2.04 g) with three different types of feed (D0 feed, feed flour of Spirulina sp. and ornamental fish feed tetra blitsz). The study was conducted experimentally with a randomized block design (RBD) method with six replications. The results showed the rate of oxygen consumption of Nereis sp. influenced by the size and type of feed given (P<0.05). Nereis sp. with size of 0.3-0.6 gr indicates the highest metabolic rate. Nereis sp. fed with flour of Spirulina sp. shows the highest metabolic rate. Appropriate feed to support the growth of Nereis sp. is D0 and tetra blits (low fiber feed).
{"title":"Oxygen Consumption Rate of Polychaeta Nereis sp. Different Sizes and Type of Feed","authors":"E. Wibowo, E. S. Palupi, I. Puspitasari, Atang Atang","doi":"10.14710/ik.ijms.24.4.159-163","DOIUrl":"https://doi.org/10.14710/ik.ijms.24.4.159-163","url":null,"abstract":"Nereis sp. contains amino acids and unsaturated fatty acids that can improve the quality of gamete stem cells and the quality of the resulting larvae. Nereis sp. can increase gamete cell maturation in the parent shrimp up to 70%. This triggers the exploitation these worms excessively in nature since there are no cultivation efforts to meet their needs. This condition encourages research on the biological aspects of Nereis sp. to complement the information that can support the cultivation of the worms. This research was conducted on Nereis sp. from the Jeruklegi Cilacap area with different types of feed. This study aims to determine the metabolic rate of the worms Nereis sp. at different sizes by giving different types of feed. This research use immature Nereis sp. which was maintained at 15 ppt salinity with three different body weight (0.3-0.6 g; 1.1-1.3 g and 1.8-2.04 g) with three different types of feed (D0 feed, feed flour of Spirulina sp. and ornamental fish feed tetra blitsz). The study was conducted experimentally with a randomized block design (RBD) method with six replications. The results showed the rate of oxygen consumption of Nereis sp. influenced by the size and type of feed given (P<0.05). Nereis sp. with size of 0.3-0.6 gr indicates the highest metabolic rate. Nereis sp. fed with flour of Spirulina sp. shows the highest metabolic rate. Appropriate feed to support the growth of Nereis sp. is D0 and tetra blits (low fiber feed). ","PeriodicalId":13381,"journal":{"name":"ILMU KELAUTAN: Indonesian Journal of Marine Sciences","volume":"57 1","pages":"159"},"PeriodicalIF":0.0,"publicationDate":"2019-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82969965","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 : 2019-12-02DOI: 10.14710/ik.ijms.24.4.179-185
Bimo Aji Nugroho, M. A. Soendjoto, M. Zaini
Public awareness and knowledge on mangrove forest biodiversity, especially gastropods, is very limited. This study aim s to compare the density and diversity index of gastropod species according to their distance from the coastline and to analyze the relationship of the two with the physical environment around them. Three lanes were placed in the southern part of the mangrove forest. The first lane (LT-1) was placed about 5 m from the coastline towards the sea. The second lane (LT-2) was placed 10 m towards the sea from LT-1 and the third lane (LT-3) was 10 m from LT-2 towards the sea. In each lane there were 10 (1 mx 1 m) plots and the distance between adjacent plots was 10 m. A total of 1.432 Gastropod individuals consisting of 16 species and 7 families were collected from 30 plots. In detail 16 species (927 individuals) were collected from LT-1, 16 species (500 indv) from LT-2, and only 3 species or 5 individuals from LT-3. The density of LT-1, LT-2, and LT-3 species respectively was 92.7; 50.0; and 0.5 indv.m -2 , while the diversity index successively was 2.56 (moderate); 2.53 (moderate); and 0.95 (low). Both species density and diversity in lanes that are close to the coastline are higher than in lanes located in the direction of the sea. The base substrate on the path that was close to the coastline was clay, while on the lane that laid in the direction of the sea was sandy loam.
{"title":"Gastropod Density and Diversity in the Mangrove Forest of Pagatan Besar Village, Tanah Laut Regency, Indonesia","authors":"Bimo Aji Nugroho, M. A. Soendjoto, M. Zaini","doi":"10.14710/ik.ijms.24.4.179-185","DOIUrl":"https://doi.org/10.14710/ik.ijms.24.4.179-185","url":null,"abstract":"Public awareness and knowledge on mangrove forest biodiversity, especially gastropods, is very limited. This study aim s to compare the density and diversity index of gastropod species according to their distance from the coastline and to analyze the relationship of the two with the physical environment around them. Three lanes were placed in the southern part of the mangrove forest. The first lane (LT-1) was placed about 5 m from the coastline towards the sea. The second lane (LT-2) was placed 10 m towards the sea from LT-1 and the third lane (LT-3) was 10 m from LT-2 towards the sea. In each lane there were 10 (1 mx 1 m) plots and the distance between adjacent plots was 10 m. A total of 1.432 Gastropod individuals consisting of 16 species and 7 families were collected from 30 plots. In detail 16 species (927 individuals) were collected from LT-1, 16 species (500 indv) from LT-2, and only 3 species or 5 individuals from LT-3. The density of LT-1, LT-2, and LT-3 species respectively was 92.7; 50.0; and 0.5 indv.m -2 , while the diversity index successively was 2.56 (moderate); 2.53 (moderate); and 0.95 (low). Both species density and diversity in lanes that are close to the coastline are higher than in lanes located in the direction of the sea. The base substrate on the path that was close to the coastline was clay, while on the lane that laid in the direction of the sea was sandy loam.","PeriodicalId":13381,"journal":{"name":"ILMU KELAUTAN: Indonesian Journal of Marine Sciences","volume":"11 1","pages":"179-185"},"PeriodicalIF":0.0,"publicationDate":"2019-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88683876","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 : 2019-12-02DOI: 10.14710/ik.ijms.24.4.164-170
H. Januar, A. Pratitis, Rini Susilowati
Excessive human waste nutrients, which usually consist of nitrogenous and phosphate compounds, are known as the major environmental stresses in coastal waters. Therefore, monitoring of nutrients level is very important in marine reserve park. This study presents an application of multi-metric index in accessing the spatial and temporal level of a nutrient in surface water at Batam City Marine Reserve Park, Indonesia. Research had been done with seasonal and spatial zones on three major islands namely Petong, Abang, and Dedep. Water samples from each station were taken from the surface water. Phosphate, nitrate, nitrite, and ammonia, were analyzed in situ and chlorophyll was conducted in the laboratory by spectrophotometric method. Statistical multi-metric detected the average eutrophication index (EI) value between 0.2-0.7, which is mesotrophic to eutrophic. Petong and Abang zones were categorized as eutrophic, and Dadap was mesotrophic. Continuous nutrients contamination throughout seasonal may be derived from sedimentation and domestic run-off from human-populated islands in the middle and northern region. Therefore, ecosystem rehabilitation and mitigation of anthropogenic run-off are needed to optimise the conservation management. Moreover, Dadap zone as the area with the least anthropogenic pressures is potential to be the core of conservation area in Batam City marine reserve park.
{"title":"Statistical multi-metric based eutrophication index: Case of study at Batam Marine Reserve Park","authors":"H. Januar, A. Pratitis, Rini Susilowati","doi":"10.14710/ik.ijms.24.4.164-170","DOIUrl":"https://doi.org/10.14710/ik.ijms.24.4.164-170","url":null,"abstract":"Excessive human waste nutrients, which usually consist of nitrogenous and phosphate compounds, are known as the major environmental stresses in coastal waters. Therefore, monitoring of nutrients level is very important in marine reserve park. This study presents an application of multi-metric index in accessing the spatial and temporal level of a nutrient in surface water at Batam City Marine Reserve Park, Indonesia. Research had been done with seasonal and spatial zones on three major islands namely Petong, Abang, and Dedep. Water samples from each station were taken from the surface water. Phosphate, nitrate, nitrite, and ammonia, were analyzed in situ and chlorophyll was conducted in the laboratory by spectrophotometric method. Statistical multi-metric detected the average eutrophication index (EI) value between 0.2-0.7, which is mesotrophic to eutrophic. Petong and Abang zones were categorized as eutrophic, and Dadap was mesotrophic. Continuous nutrients contamination throughout seasonal may be derived from sedimentation and domestic run-off from human-populated islands in the middle and northern region. Therefore, ecosystem rehabilitation and mitigation of anthropogenic run-off are needed to optimise the conservation management. Moreover, Dadap zone as the area with the least anthropogenic pressures is potential to be the core of conservation area in Batam City marine reserve park.","PeriodicalId":13381,"journal":{"name":"ILMU KELAUTAN: Indonesian Journal of Marine Sciences","volume":"17 1","pages":"164-170"},"PeriodicalIF":0.0,"publicationDate":"2019-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90157351","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 : 2019-12-02DOI: 10.14710/ik.ijms.24.4.171-178
Yuni Karnisa, Desrina Desrina, I. Widowati
Blood cockle Anadara granosa is a popular sea food in Indonesia and potential for aquaculture. Currently, blood cockle aquaculture is at early stage, done by taking the larva from wild and raised them in the pond. Wild animal naturally carries parasites without outward clinical signs but can cause disease problem under aquaculture condition. This study aimed to identify parasites and histopathology changes in wild A . granosa . Blood cockles (n=90) were randomly collected during 3 months at three stations in the coastal waters of Bedono (Station 1: the intertidal area of the edge near to the mangrove area, station 2: the center of intertidal area, station 3: the area near to the sea), a village located on North Java coast and supplied blood cockle larva to the area. Parasites examination was conducted in the laboratory by macroscopic (observation of clinical symptoms) for ectoparasites and microscopic (using a microscope) for endoparasites. Histopathology preparation was done by taking three cockles at each station and cutting tissue that includes gills, foot, gonads, digestive tract and mantle. Organs were fixed in a 10% NBF solution, processed, mounted in paraffin and stained with hematoxylin and eosin. Parasites found were identified and the level of intensity and prevalence were calculated. There were three species of parasites found: Pinnotheres sp. (Intensity 1 ind/cockle; Prevalence: 3.33%), Perkinsus sp. (Intensity: 9.3 cell/cockle; Prevalence: 37.03%), Nematopsis sp. (Intensity: 4.25 cell/cockle; Prevalence: 29.62%). There were no histopathology changes on infected tissues which may relate to low diversity, prevalence and intensity of parasites found in this study.
{"title":"Parasites Identification and Histopathology Changes on Blood Cookle (Anadara granosa Linnaeus, 1758)","authors":"Yuni Karnisa, Desrina Desrina, I. Widowati","doi":"10.14710/ik.ijms.24.4.171-178","DOIUrl":"https://doi.org/10.14710/ik.ijms.24.4.171-178","url":null,"abstract":"Blood cockle Anadara granosa is a popular sea food in Indonesia and potential for aquaculture. Currently, blood cockle aquaculture is at early stage, done by taking the larva from wild and raised them in the pond. Wild animal naturally carries parasites without outward clinical signs but can cause disease problem under aquaculture condition. This study aimed to identify parasites and histopathology changes in wild A . granosa . Blood cockles (n=90) were randomly collected during 3 months at three stations in the coastal waters of Bedono (Station 1: the intertidal area of the edge near to the mangrove area, station 2: the center of intertidal area, station 3: the area near to the sea), a village located on North Java coast and supplied blood cockle larva to the area. Parasites examination was conducted in the laboratory by macroscopic (observation of clinical symptoms) for ectoparasites and microscopic (using a microscope) for endoparasites. Histopathology preparation was done by taking three cockles at each station and cutting tissue that includes gills, foot, gonads, digestive tract and mantle. Organs were fixed in a 10% NBF solution, processed, mounted in paraffin and stained with hematoxylin and eosin. Parasites found were identified and the level of intensity and prevalence were calculated. There were three species of parasites found: Pinnotheres sp. (Intensity 1 ind/cockle; Prevalence: 3.33%), Perkinsus sp. (Intensity: 9.3 cell/cockle; Prevalence: 37.03%), Nematopsis sp. (Intensity: 4.25 cell/cockle; Prevalence: 29.62%). There were no histopathology changes on infected tissues which may relate to low diversity, prevalence and intensity of parasites found in this study.","PeriodicalId":13381,"journal":{"name":"ILMU KELAUTAN: Indonesian Journal of Marine Sciences","volume":"1 1","pages":"171-178"},"PeriodicalIF":0.0,"publicationDate":"2019-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90253493","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 : 2019-12-02DOI: 10.14710/ik.ijms.24.4.153-158
D. Yona, Zefanya Nandaningtyas, Bernads Daniel Marolop Siagian, Syarifah Hikmah Julinda Sari, A. Yunanto, F. Iranawati, M. A. Z. Fuad, Junika Chintia Ayu Putri, Mela Dita Maharani
Two methods of microplastics sampling in the Bali Strait, manta net (250 µm mesh size) and plankton net (20 µm mesh size), were compared. The difference in the mesh sizes could result in the difference of the microplastics found. Water samples from both sampling tools were analyzed with filtration and all organic materials were removed using Hydrogen Peroxide. Natrium chloride (NaCl) was used to further separate microplastics and organic materials based on its density. The result identified three types of microplastics found in Bali Strait: fibers, films and fragments with total abundances of microplastics were 32.48 x 102 particles.m-3 and 16.33 x 102 particles.m-3using manta net and plankton net, respectively. These results indicated that the numbers of microplastics per cubic metres was higher using manta net sampling tool compared to plankton net. This may likely caused by the smaller size of the mesh used and also the sampling area covered using manta net.
比较了巴厘岛海峡蝠鲼网(250µm目)和浮游生物网(20µm目)两种微塑料取样方法。网孔大小的不同会导致所发现的微塑料的不同。两种取样工具的水样都经过过滤分析，所有有机物质都用过氧化氢除去。利用氯化钠(NaCl)的密度进一步分离微塑料和有机材料。结果确定了在巴厘岛海峡发现的三种微塑料:纤维、薄膜和碎片，微塑料的总丰度为32.48 x 102个颗粒。M-3和16.33 x 102粒子。m-3分别使用蝠鲼网和浮游生物网。这些结果表明，与浮游生物网相比，蝠鲼网取样工具每立方米的微塑料数量更高。这可能是由于使用的网目尺寸较小，以及使用蝠鲼网覆盖的采样区域。
{"title":"Microplastic in The Bali Strait : Comparison of Two Sampling Methods","authors":"D. Yona, Zefanya Nandaningtyas, Bernads Daniel Marolop Siagian, Syarifah Hikmah Julinda Sari, A. Yunanto, F. Iranawati, M. A. Z. Fuad, Junika Chintia Ayu Putri, Mela Dita Maharani","doi":"10.14710/ik.ijms.24.4.153-158","DOIUrl":"https://doi.org/10.14710/ik.ijms.24.4.153-158","url":null,"abstract":"Two methods of microplastics sampling in the Bali Strait, manta net (250 µm mesh size) and plankton net (20 µm mesh size), were compared. The difference in the mesh sizes could result in the difference of the microplastics found. Water samples from both sampling tools were analyzed with filtration and all organic materials were removed using Hydrogen Peroxide. Natrium chloride (NaCl) was used to further separate microplastics and organic materials based on its density. The result identified three types of microplastics found in Bali Strait: fibers, films and fragments with total abundances of microplastics were 32.48 x 102 particles.m-3 and 16.33 x 102 particles.m-3using manta net and plankton net, respectively. These results indicated that the numbers of microplastics per cubic metres was higher using manta net sampling tool compared to plankton net. This may likely caused by the smaller size of the mesh used and also the sampling area covered using manta net. ","PeriodicalId":13381,"journal":{"name":"ILMU KELAUTAN: Indonesian Journal of Marine Sciences","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72583698","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 : 2019-12-02DOI: 10.14710/ik.ijms.24.4.186-194
R. Melianawati, B. Slamet
Blacksaddled coralgrouper, Plectropomus laevis, is an endangered species of marine fish. As part of conserv ing their existence in the wild, culture of this species has been started. However, knowledge of biological parameters of this species as important indicators to observe the fish growth in mariculture scale, is limited. T he purpose of this study was to observe biological parameters during eggs, larval to juvenile stage of blacksaddled coralgrouper in mariculture hatchery. The eggs were obtained from natural spawning of domesticated broodstocks. Larva e rearing was done in hatchery at three different times as replicates. Larval were fed with zooplankton which consist of rotifers Brachionus sp., wild copepods and Artemia. Artificial feed was also given to the fish larvae. Larval samples were taken on e Day After Hatching (DAH), then continued every 5 days started at 5 to 45 DAH by using five larvae each sampling time. The observed parameters were diameter of eggs and oil globule, total length and standard length of larvae length of dorsal and pelvic fin spines of larvae. Furthermore, growth pattern of those length parameters was analys ed by regression equation. The result showed that diameter of blacksaddled coralgrouper eggs was 835.19±15.29 µm, while oil globule was 177.78±10.30 µm. The growth pattern s of larval total length and standard length were exponential, while dorsal and pelvic fin spine s were polynomial. The length of time from larvae to achieve juvenile stage was range between 45-50 days. All of th ese information can be used as references either in larvae rearing or for further study of the fish .
{"title":"Biological Parameters of Blacksaddled Coralgrouper (Plectropomus laevis Lacepède, 1801) Eggs and Larvae","authors":"R. Melianawati, B. Slamet","doi":"10.14710/ik.ijms.24.4.186-194","DOIUrl":"https://doi.org/10.14710/ik.ijms.24.4.186-194","url":null,"abstract":"Blacksaddled coralgrouper, Plectropomus laevis, is an endangered species of marine fish. As part of conserv ing their existence in the wild, culture of this species has been started. However, knowledge of biological parameters of this species as important indicators to observe the fish growth in mariculture scale, is limited. T he purpose of this study was to observe biological parameters during eggs, larval to juvenile stage of blacksaddled coralgrouper in mariculture hatchery. The eggs were obtained from natural spawning of domesticated broodstocks. Larva e rearing was done in hatchery at three different times as replicates. Larval were fed with zooplankton which consist of rotifers Brachionus sp., wild copepods and Artemia. Artificial feed was also given to the fish larvae. Larval samples were taken on e Day After Hatching (DAH), then continued every 5 days started at 5 to 45 DAH by using five larvae each sampling time. The observed parameters were diameter of eggs and oil globule, total length and standard length of larvae length of dorsal and pelvic fin spines of larvae. Furthermore, growth pattern of those length parameters was analys ed by regression equation. The result showed that diameter of blacksaddled coralgrouper eggs was 835.19±15.29 µm, while oil globule was 177.78±10.30 µm. The growth pattern s of larval total length and standard length were exponential, while dorsal and pelvic fin spine s were polynomial. The length of time from larvae to achieve juvenile stage was range between 45-50 days. All of th ese information can be used as references either in larvae rearing or for further study of the fish .","PeriodicalId":13381,"journal":{"name":"ILMU KELAUTAN: Indonesian Journal of Marine Sciences","volume":"4 1","pages":"186-194"},"PeriodicalIF":0.0,"publicationDate":"2019-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80686379","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 : 2019-09-04DOI: 10.14710/ik.ijms.24.3.113-120
A. Mahmood, I. Al-Shawi, H. Al-Sayab, Sejad K. Jasib, Z. A. Abdulnabi, Nadia K. Muhsen, Y. Alewi
The present study (i.e. the first study in Iraqi waters) identified the causes of reproduction and excessive growth of the jellyfish, which locally known as thagolol, of the type (Catostylus perezi) in the region of Shatt Al-Basrah canal - west of Basrah city. The reproduction and excessive growth of jellyfish occurs in many estuaries and coastal areas in the world, which is a recurring global problem in the context of climate change. The conducted study was included measurements of dissolved oxygen, electrical conductivity, total dissolved solids, pH, temperature, nitrates, phosphate, quality and quantity of phytoplankton during the dominant of :the northwest winds; the neap tide and during a full tidal periods in October of 2018 and March of 2019. The results showed that there were thrive of jellyfish by huge numbers in Shatt Al-Basrah canal. The physical; chemical and biological causes (i.e., the local causes), were identified, namely: (1) salinity, (2) water column temperature stratification in the context of climate change, (3) an excessive increase in the concentrations of nitrate and phosphate, (4) abundance of phytoplankton (i.e. dinoflagellate), including Protoperidinium sp. and Alexandrium sp.; and (5) overfishing. Hence, the absence of any of these factors will lead to the absence of this type of jellyfish.
{"title":"The Impacts of Ecosystem Hypertrophication and Climate Changes on Thrive of the Jellyfish in Shatt Al-Basrah Canal","authors":"A. Mahmood, I. Al-Shawi, H. Al-Sayab, Sejad K. Jasib, Z. A. Abdulnabi, Nadia K. Muhsen, Y. Alewi","doi":"10.14710/ik.ijms.24.3.113-120","DOIUrl":"https://doi.org/10.14710/ik.ijms.24.3.113-120","url":null,"abstract":"The present study (i.e. the first study in Iraqi waters) identified the causes of reproduction and excessive growth of the jellyfish, which locally known as thagolol, of the type (Catostylus perezi) in the region of Shatt Al-Basrah canal - west of Basrah city. The reproduction and excessive growth of jellyfish occurs in many estuaries and coastal areas in the world, which is a recurring global problem in the context of climate change. The conducted study was included measurements of dissolved oxygen, electrical conductivity, total dissolved solids, pH, temperature, nitrates, phosphate, quality and quantity of phytoplankton during the dominant of :the northwest winds; the neap tide and during a full tidal periods in October of 2018 and March of 2019. The results showed that there were thrive of jellyfish by huge numbers in Shatt Al-Basrah canal. The physical; chemical and biological causes (i.e., the local causes), were identified, namely: (1) salinity, (2) water column temperature stratification in the context of climate change, (3) an excessive increase in the concentrations of nitrate and phosphate, (4) abundance of phytoplankton (i.e. dinoflagellate), including Protoperidinium sp. and Alexandrium sp.; and (5) overfishing. Hence, the absence of any of these factors will lead to the absence of this type of jellyfish. ","PeriodicalId":13381,"journal":{"name":"ILMU KELAUTAN: Indonesian Journal of Marine Sciences","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82175268","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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