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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. 6 No. 1 (2022): April 2022" : 5 Documents clear
Stomach Contents In Relation To Shell Length, Width, and Weight in the Gastropod Trochus niloticus L Eddy Soekendarsi; Slamet Santosa
Jurnal Moluska Indonesia Vol. 6 No. 1 (2022): April 2022
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The stomach content of 66 individuals of Trochus niloticus contained 42 potential food taxa. The composition   reflected that the snails had grazed on the surface of dead corals. Chrysophyta, Chlorophyta, Rhodophyta, Foraminifera, Cyanophyta, and settled pelagic organisms were mixed with a large quantity of detritus and sand.  The snails measured 2.3-11.9 cm in shell length, 2.6-12.3 cm in shell width, 0.93-84.82 g in soft body wet weight, and the weight of stomach contents was 0.03-10.09 g. The relationship between shell length and weight of stomach content was y=0.0373 exp(0.5003x), r=0.91; between shell width and weight of stomach content: y=0.0325 exp(0.4974x), r=0.92, and between soft body wet weight and weight of stomach content: s=:0.1793   + 0.0785x, r=0.97.
Gastropods Diversity at Siklotok Waterfall and Silangit Waterfall, in Purworejo Regency, Central Java Amelia Pergiwa; Felicia Zahida; A. Wibowo Nugroho Jati
Jurnal Moluska Indonesia Vol. 6 No. 1 (2022): April 2022
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v6i1.42

Abstract

Gastropods are a type of mollusk that can be found easily on mountain peaks up to the sea floors. Mollusk is considered the most successful invertebrates because it distributed a variety of habitats. Among the 80,000 species of Gastropods, about 1500 of which are found in Indonesia and its surroundings. This study aims to determine the level of gastropod diversity and the presence of gastropods at the Siklotok Waterfall and the Silangit Waterfalls at Purworejo, Central Java. Observations were carried out in triplicate between February to April 2018 using the observational research method, where the observation focused on 2 locations with different heights, 347 masl and 268 masl. The results show that the diversity of Gastropods found at Siklotok Waterfall from March to April 2018 found 193 individuals divided into 13 types of 9 orders and 9 families, while at Silangit Waterfall found 66 individuals divided into 4 types 3 orders and 3 families. The next fact is that the difference in environmental conditions such as altitude, temperature, pH and humidity affect the number of gastropods found, where the number of gastropods at Siklotok Waterfall is more than at Silangit Waterfall.
Diversity of Bivalvia in Estuarine of Suramadu Bridge of Surabaya Viola Atlanta; Reni Ambarwati; Mujiono Nova
Jurnal Moluska Indonesia Vol. 6 No. 1 (2022): April 2022
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v6i1.52

Abstract

The coast of the Suramadu Bridge is one of the important areas that has function as a route for transportation, recreation, as well as a protected area. However, the data of aquatic biota is rarely studied. One of them is bivalves. This research was conducted in February 2021 with the aim to analyze the diversity of bivalves in the Suramadu Coast. Observations and sampling were carried out in 3 transects 5 x 5 m based on different habitats. Five species of bivalves (Mimachlamys sanguinea, Anadara rhomboidalis, Tegillarca granosa, Barbatia trapezina, and Atrina pectinata) from three families (Pectinidae, Arcidae, and Pinnidae) were identified. The results of the community index show the individual distribution pattern and community stability in the medium category, there is a dominant species (Anadara rhomboidalis) but without significant differences in the number of individuals. This shows that the bivalves community is in a state of stress. A. rhomboidalis has the greatest role in the stability of the community, which can be seen from the value of the Important Value Index and the total volume of the shell. Recently, there are only two species that can be used sustainably, namely T. granosa and A. rhomboidalis.
Study of Correlation and Diversity of Gastropods at Mangrove Ecosystem in Payum Beach, Merauke Sendy Lely Merly; Reny Sianturi; Alfonsia Lusi Nini
Jurnal Moluska Indonesia Vol. 6 No. 1 (2022): April 2022
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v6i1.56

Abstract

This study had two aims, first was to determine the index of diversity, evenness, richness and dominance of gastropods species in the mangrove ecosystem, to assess the important value index of mangroves in the mangrove ecosystem, and the second one to understand the association of gastropods and mangrove in the mangrove ecosystem in Payum Beach, Merauke Regency. This research was conducted in September-October2021. This research using method of transect with a 100 m lenght of transect size. The research location devided into two station that are distinguished by the mangrove ecosystem to see the associated mollusc species. There were 8 species of gastropods that were analyzed including: Terebralia palustris, Terebralia semistriata, Telescopium telescopium, Cassidula angulifera, Cerithidea obstusa, Littorina intermedia, Littorina pallencens, and Littorina scabra. The diversity index (H’) of gastropods is 1,9370 so it is categorized as moderate, meanwhile the richness index (R) is 0,86 and the dominance (C) 0,16 both of these categorized as low, whilst inversely proportional to the evenness index (E) which shows the number 0,93 which means high evenness so that the community is stable. Furthermore, there are 3 types of mangroves namely Bruguirea cylindrica, Lumnitzera racemosa, dan Aegialitis annulata. Nonetheless, the relationship between the abundance of individuals of gastropods and the presence of mangroves at the research sites at station I and station II tended to be weak.
Research of Pearl Oyster Culture in Indonesia (2011-2021): A Bibliometric Analysis Dewi Syahidah
Jurnal Moluska Indonesia Vol. 6 No. 1 (2022): April 2022
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v6i1.57

Abstract

Pearl oyster is one type of mollusk that has great potential to be developed in several regions in Indonesia, such as West Papua, Maluku, Bali, and West Nusa Tenggara (NTB). The development of the marine and fisheries industry, including the pearl industry, is quite rapid, encouraging Indonesian scientists to conduct research and development related to the cultivation of the pearl oyster. To map the trend of pearl oyster research in Indonesia and the potential for further research, this paper explores research that has been carried out for ten years (2011-2021) based on the Google Scholar database through a bibliometric analysis, followed by visualization using the VOSviewer software. It was found that during the period, pearl oyster researchers were divided into 32 clusters and Cokrowati (4 documents) was the most dominating researcher in studying pearl oyster cultivation, followed by Ginting and Mukhlis (3 docs). The type of pearl oyster that has been most studied related to farming is pearl oyster (Pinctada maxima) and the penguin wing oyster shell (Pteria penguin). This study provides opportunities to develop research on both species.

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