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INDONESIA
Indonesian Journal of Mollusk
Published by Indonesian Mollusk Society
ISSN : 27767507     EISSN : 20878532     DOI : https://doi.org/10.54115/
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science
The Indonesian Journal of mollusk is dedicated to publishing high quality research papers and reviews in all aspects of molluscs including ecology, conservation, biodiversity, aquaculture, microbiology and biotechnology. The Mollusk Journal is published 2 (two) times a year, namely April and October.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ecology, Evolution, Behavior and Systematics
Articles 5 Documents
 1 
Search results for , issue "Vol. 3 No. 1 (2019): April 2019" : 5 Documents clear
The Effect of Increasing pH on Heavy Metal Content of Cu and Cd and Structure of the Gills and Coats of Anadara granosa with Scanning Electron Microscopy (SEM) Study Isa Anzori; Delianis Pringgenies; Sri Redjeki
Jurnal Moluska Indonesia Vol. 3 No. 1 (2019): April 2019
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v3i1.21

Abstract

Significant changes in pH, both acidic and alkaline, can disrupt water quality. Furthermore, it will affect the life of aquatic biota. The purpose of this study was to determine the effect of increasing pH on heavy metal concentrations of Cu and Cd (quantitative) in shellfish bodies and on the level of damage to the gills and mantle shells (qualitative) by scanning electron microscopy. The research was conducted at the Integrated Marine Science Laboratory, UNDIP Semarang. Heavy metal analysis was carried out at Wahana Laboratorium Semarang. The scanning electron microscopy process was carried out at the Electron Microscopy Unit, Faculty of Medicine, UNAIR Surabaya. The results of the heavy metal analysis both Cu and Cd showed that pH 9 had the highest heavy metal content, namely Cu = 0.33 mg / kg while Cd = 0.57 mg / kg. Whereas for pH 7, the lowest heavy metal concentration was obtained for Cd = 0.35 mg / kg, but for the lowest Cu was found at pH 8 of 0.21 mg / kg. The differences were seen in the SEM results of gills and mantle ph 7 and 9. Observations on mantle epithelial cells and gill filaments with a magnification of 75 and 1000X showed that at pH 7 the epithelial cells had regular folds, the distance between the barriers was clear and the size was normal. Whereas at pH 9 it has irregular folds, the distance between the bulkheads is hollow and perforated. The gill filaments of pH 7 have a smooth filament structure and clear between the filaments.
Isolation of Luminescent Bacteria on Loligo duvauceli and Euprymna berryi squid Abdul Kodir Jaelani; Delianis Pringgenies
Jurnal Moluska Indonesia Vol. 3 No. 1 (2019): April 2019
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v3i1.23

Abstract

Bioluminescence is known to be found in squids. Bioluminescence occurs as a result of reactions from within the body (intrinsic bioluminescence) or by luminescent bacteria that are outside the body (extrinsic bioluminescence). This study aims to examine the results of the isolation of luminescent bacteria found in the light organs of Loligo duvauceli and Euprymna berryi squid. Squid sampling was carried out in the waters of Awur Bay, Jepara. Meanwhile, bacterial isolation and analysis were carried out in the Laboratory of Aquatic Animal Health Management (MKHA) of the Central for Brackish Water Cultivation Development (BBPBAP) Jepara. The research method used in this research is descriptive method with the sampling technique using purposive sampling technique. The results of the research on Loligo duvauceli squid obtained 2 isolates of luminescent bacteria, 1 isolate from N.A. and 1 isolate from TCBSA media. Whereas in Euprymna berryi squid there were also 2 isolates, 1 isolate from N.A. and 1 isolate from TCBSA media. The glow produced by luminescent bacteria is bluish green. In general, the luminescent bacteria isolated from the Loligo duvauceli squid was stronger than the light rays of the bacteria isolated from the Euprymna berryi squid. The total number of luminescent bacterial colonies found in the light organ of Loligo duvauceli squid was 15.47.108 CFU / mL. While the total number of luminescent bacterial colonies in the light organ of the squid Euprymna berryi was 15.1.107 CFU / mL.
Growth and Survival of Juvenile Giant Clam Tridacna squamosa as a Function of Density Gunarto Latama; A. Niarti Ningsih; Inayah Yasir; Hasyim
Jurnal Moluska Indonesia Vol. 3 No. 1 (2019): April 2019
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v3i1.28

Abstract

Juvenile Tridacna squamosa (less than 1 cm shell length) were placed in concrete trays in a coral habitat at the Marine Station of Hasanuddin University, Barang Lompo Island, South Sulawesi, Indonesia. A nylon net was used to protect against predators. The clams were stocked at 3 densities: 1000, 500, and 250 ind. m-2. Growth and survival were monitored in triplicate experiments. Growth was negatively correlated with density and significant differences were found between densities of 1000 and 250 ind m-2. After three months at the lowest density the mean shell length increment was 9 mm. There was no significant relation between density and survival rate.
Analysis of Fe and Zn content in green mussell Perna viridis at Bandengan beach Jepara and Tanjung Mas beach Semarang city Anita Dwi Kartika; Delianis Pringgenies; Ali Ridlo
Jurnal Moluska Indonesia Vol. 3 No. 1 (2019): April 2019
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v3i1.32

Abstract

Green Mussel included to permanent animal so the interaction with its environment will affect its needed or its un-needed nutrient. Iron and zinc represent a very required micro mineral of human body. Iron plays an important role in forming red corpuscles and preventing anemia. The function and role of zinc in body for example to assist the forming of cell genetic items, forming the red corpuscle (haemoglobin), and also to assist pancreas function in digestion process. Territorial water of Jepara and Semarang are the representation areas producing Green Mussel (Perna Viridis). The aim of this research is to understand the iron and zinc content in Green Mussel. This research was conducted in December 2006 until February 2007. Materials used in this research is Green Mussel derived from Territorial water of Bandengan, Jepara and Territorial Water of Tanjung Mas, Semarang. The intake of Green Mussel sample used Purpose Random Sampling Method, which is intake of sample at random according to specific purpose. Method used in this research is Descriptive Method, while for iron and zinc measurement method using AAS. The result showed that the iron rate in Green Mussel at Territorial Water of Bandengan, Jepara degraded 459,70, 209,23 and 147,87 mg/kg from December 2006 until February 2007. While the Iron content in Green Mussel at Territorial Water of Tanjung Mas, Semarang continuously increased 227,18, 317,66 and 336,52 mg/kg from December 2006 until February 2007. The analysis result of zinc content on December until February of Jepara degraded 60,15, 8,90 and 7,73 mg/kg. While the Green Mussel Zinc of Tanjung Mas, Semarang on December 2006 until January 20.07 was degrading, from 154,10 become 9,63 and on January until February was increasing, from 9,63 mg/kg become 10,11 mg/kg.
The Effect of Patch Size on Morphology and Growth on The Intertidal Box Mussel Septifer bilocularis L., in North Sulawesi, Indonesia Medy Ompi; Lawrence J.L. Lumingas
Jurnal Moluska Indonesia Vol. 3 No. 1 (2019): April 2019
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v3i1.33

Abstract

Isolated small and large patches of Septifer bilocularis were divided into three length size classes: small (>10 to 17 mm), medium (>17 to 23 mm), and large (>23 mm) mussels. Each group was divided into three groups of different densities to form isolated patches (10 individuals), medium patches (50 individuals), and large patches (100 individuals). Three replicates of each patch size were established. Each density group was placed in a cage and returned to their natural hard bottom substrata, placed randomly, 50 cm between cages. At low water level, the area was exposed to air. The length / weight regression line of mussels in small and large patches overlapped, but there was a significant difference between the slopes (ANCOVA, p<0.05). Mussels occurring in small patches were heavier and thicker than those of larger patches. Box mussels in small patches had significantly higher growth than mussels in medium and large patches

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