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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 50 Documents
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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
Rekrutmen Box Mussel, Septifer Bilocularis L. Efek Substratum Dan Kepadatan Dewasa Medy Ompi
Jurnal Moluska Indonesia Vol. 3 No. 2 (2019): Oktober 2019
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v3i2.34

Abstract

An intertidal population of Septifer bilocularis L. was studied in Tongkeina, North Sulawesi, Indonesia. Open and closed cages were applied in field experiments to study the effects of four types of substrata on settling of S. bilocularis: live shells of adults, dead shells, coral rubble, and sand. Each substratum was tested with four levels of adult mussel density: 0, 10, 50, 100 individuals per compartment. The number of recruits as a function of cage, substratum, and adult density was analysed using Two-way ANOVA. The experiment showed that new recruits were affected by the substratum but not by the density of adults. The surface of adult box mussels was the most attractive substratum for recruits
Settlement Of Marine Boring Bivalve Larvae On Wood Soaked Horizontally And Vertically In Pelabuhan Ratu Bay, West Java Fredinan Yulianda
Jurnal Moluska Indonesia Vol. 3 No. 2 (2019): Oktober 2019
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v3i2.45

Abstract

Pieces of red meranti wood (Shorea leprosula) were soaked in horizontal and vertical positions in sea water for 9 weeks. Two species of bivalves settled on the wood: Bankia campanellata (Moll & Roch) and Martesia striata (Linné). Average densities of settling larvae were 125 ind. 100 cm-2 on horizontal wood, and 95 ind. 100 cm-2 on vertical wood, indicating a tendency to settle on the top side of the wood. The number of larvae settling on wood immersed at the surface was not significantly different from wood at 1.25 m depth.
Gastropod Pests on Gracilaria Cylindrica and Gracilaria Verrucosa Eddy Soekendarsi
Jurnal Moluska Indonesia Vol. 3 No. 2 (2019): Oktober 2019
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v3i2.48

Abstract

Using traditional methods, Gracilaria cylindrica and Gracilaria verrucosa are commonly cultivated in ponds located in the south eastern parts of South Sulawesi. G. cylindrica has thick, cylindrical branches. G. verrucosa has slender broad-based branches. An illustrated taxonomic account is presented. Three species of herbivore gastropods, Clithon sp., Neritodryas sp., and Clypeomorus sp., occur naturally in the pond areas. The snails easily develop into pests. To reduce the problem, farmers must daily clean cultured Gracilaria by hand. Polyculture of Gracilaria and milk fish reduce problems with fouling epiphytes.
Mollusca’s Density and Distribution Pattern in Kalangan Mangrove Forest Ecosystem Sayu Natio Tarihoran; Susi Mei; Arsanti Arsanti; Rodhi Firmansyah; Dian Fitria M; Tengku Muhammad Ghazali; Daniel Sinaga
Jurnal Moluska Indonesia Vol. 5 No. 2 (2021): Oktober 2021
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v5i2.16

Abstract

Shellfish is one of the organisms that have habitat in mangrove forests because it has a muddy substrate. However, mangrove forests in the coastal area of Kalangan, Central Tapanuli Regency have suffered environmental damage. Therefore, a research on the density and pattern of shellfish distribution is needed to be a recommendation for optimal, sutainable mangrove forest management. This research was conducted in September 2020. The method used in determining the location of sampling is purposive sampling method using 1x1m2 plot on the surface of muddy sand substrate. The results showed that the population density of Anodentia edentula 32 ind/m2 at Point I with grouping distribution patterns; Cerithidea cingulata 74 ind/m2 at Point I (grouping), 156 ind/m2 in Point II (grouping), and 126 ind/m2 in Point III (grouping); Cerithidea quadrata 2 ind/m2 in Point I (uniform); Clypeomorus sp 12 ind/m2 at Point I (uniform); Nerites sp 178 ind/m2 at Point I (group), 94 ind/m2 at Point II (group), and 418ind/m2 at Point III (grouping); Donax trunculus 3 ind/m2 at Point I (uniform); Sulcospira testudinaria 1 ind/m2 at Point I (uniform), 79 ind/m2 at Point II (grouping), and 32 ind/m2 at Point III (random), and Telescopium telescopium 2 ind/m2 at Point I (uniform), and 1 ind/m2 at Point III (random). So it can be concluded that the biodiversity of mollusca in mangrove forest ecosystems in the coastal area of Kalangan, Central Tapanuli Regency, is of low value so that it needs to be maintained for the sake of ecosystem balance and the availability of germplasm for future generations.
Mud Clam’s (Anodentia edentula) Density and Distribution Pattern in Kalangan Mangrove Forest Ecosystem Susi Mei; Sayu Natio Tarihoran; Arsanti Arsanti; Rodhi Firmansyah; Dian Fitri M; Tengku Muhammad Ghazali; Daniel Sinaga
Jurnal Moluska Indonesia Vol. 5 No. 2 (2021): Oktober 2021
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v5i2.17

Abstract

The excessive use of Mud Shells (Anodentia edentula) as a staple food by the people of Kalangan Village, Central Tapanuli Regency caused the decline of the shellfish population. This is marked by the scattering of mud shells at research sites and often people conduct shell-searching activities at low tide. Therefore, a scientific study is needed to know the density and distribution patterns as the basis for the possibility of cultivation activities, management of mud shell germplasm (Anodentia edentula), and mangrove ecosystems in kalangan area in the future optimally, sustainably, and sustainably. The study was conducted in September 2020, using the 1x1m2 transect method purposive sampling at low tide. The results showed that the density of Mud Shells (Anodentia edentula) amounted to 150 ind/m2 in Station I, 0 ind/m2 in Station II with distribution pattern clustering, and 43 ind/m2 in Station III with distribution pattern random. With the evidence that there is a research station that contain zero mud clam and with unsimilarity in distribution pattern that should be clustering in every research station, therefore it can be concluded that the abudance of mud clam in the ecosystem already decline both quantifically and qualitativelyand requires conservation and cultivation action to ensure its existence in the future.
Radular Morphology of Thiarid from Raja Ampat Nur Rohmatin Isnaningsih
Jurnal Moluska Indonesia Vol. 5 No. 2 (2021): Oktober 2021
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v5i2.46

Abstract

Radula in gastropods is considered as a constant and conservative character that can be used in classification and phylogenetic at certain taxa level. However, character of radula is also ecophenotypic, so that the morphology of the radula can also indicates intraspecific variations that able to detect differences among species. The insights of the radular morphology specific to Thiaridae is important for classifying species within this family. Through an enzymatic procedure using the proteinase-K, five radula of Thiarid from Raja Ampat were extracted. The results of research on radula showed that the five species studied had the taeniglossan radula type. The band of the radula is 1.8 - 4.8 mm long and consists of marginal teeth, lateral teeth, and rachidian. The radula formula is 2/1/R/1/2 with a 3-4/1/3-4 rachidian pattern and a 2-3/1/2-3 lateral teeth pattern. The mesocone shape of the rachidian and lateral teeth varies between rounded and pointed.
Distribution of Gastropods in Mangrove Forest Area of Segara Anakan Cilacap Teguh Sugiarto; Chrisna Adhi Suryono; Jusup Suprijanto
Jurnal Moluska Indonesia Vol. 5 No. 2 (2021): Oktober 2021
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v5i2.47

Abstract

This study aims to determine the distribution and diversity of gastropods at two locations with different levels of sedimentation in the mangrove forests of Segara Anakan Cilacap. This research was conducted during May-August 2002 in the mangrove forest area of Segara Anakan Cilacap. Analysis and identification of samples were carried out at the Laboratory of Marine Geology and Chemistry, Department of Marine Sciences, Diponegoro University, Awur Bay, Jepara. A preliminary survey was conducted to determine the research location, namely Klaces with high sedimentation rates and natural Sapuregel or areas with low sedimentation rates. At each research location 3 stations (I, II, and III) were determined, each of which was a transect line along 500 m. Each station has 3 sub stations, namely A (on the river bank), B (250 mr), and C (500 m) from the starting point. At each sub station there are two plots of 5m x 5m as a place for taking samples. The results showed that in the mangrove forests of Segara Anakan Cilacap, 29 species from 10 gastropod families were found. Cerithidea obtusa and Neritina violacea dominate the Klaces location with an average abundance of 14.04 individuals / m2 and 8.17 individuals / m2, respectively. Sapuregel was dominated by Nerita lineata with an average abundance of 1.77 individuals / m2. The Index of Diversity and Evenness in Sapuregel (2.48 and 0.61) was higher than the Klaces (1.73 and 0.42). Meanwhile, the Dominance Index in Klaces (0.46) is greater than that of Sapuregel (0.24). The community similarity between Klaces and Sapuregel is high, namely 65.12%.
Mercury Content on Mangrove Roots and Telescopium telescopium in Kao Bay, North Halmahera Moh. Fauzan Jafar Moh. Fauzan Jafar; Reni Tyas Asrining Pertiwi
Jurnal Moluska Indonesia Vol. 5 No. 2 (2021): Oktober 2021
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v5i2.50

Abstract

The process of extracting gold using mercury (Hg) carried out by Nusa Halmahera Minerals industries (PT. NHM) as well as by the community of illegal gold mining or gold mining without a permit (PETI) that occurs in the mining area of ​​Halmahera Island can have a negative impact on the aquatic environment. This study aims to determine the mercury absorption in mangrove roots of Rhizopora sp and Telescopium telescopium at two different stations. Sampling of mangrove roots was repeated 3 times for each station. Differences in the accumulation of heavy metals Hg in the roots of Rhizophora sp were analyzed using the T-test. The study showed that the concentration of mercury in the roots of Rhizophora sp ranged from 0.016 – 0.026 mg/kg and there were differences in root absorption between Rhizopora sp at station 1 of the Tabobo River mangrove near the PETI disposal and station 2 at the mining industry waste disposal. The concentration of mercury in Telescopium telescopium ranged from 0.08 - 0.15 mg/kg.  It is indicates that Telescopium telescopium in Kao Teluk has been contaminated with mercury but is still below the threshold of the quality standard that has been set.

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