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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
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Search results for , issue "Vol. 3 No. 2 (2019): Oktober 2019" : 5 Documents clear
Survey of Snail And Slug Pests On Agricultural Land In Java (Gastropoda : Pulmonata) Mujiono Nova
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.v3i2.15

Abstract

The diversity of terrestrial gastropods as horticultural pests in Java has been examined. Six species of gastropoda, of which three species are snail and three others are slug, were collected and identified from 18 host-plant species from 20 observed locations. Some of them are economically destructive. Bradybaena similaris is capable of attacking 18 plant species, while Parmarion martensi also capable of attacking 10 plant species. Both species are potentially detrimental for local farmers. This paper will deal with the morphological identification and distribution of each species, as well as their attack and impact to their host-plant species.
Littoraria scabra (Linnaeus, 1758) (Littorinidae: Prosobranchia) in The Mangrove of Bunaken Island, North Sulawesi Farnis B. Boneka; Lumingas L.J.L.; Pratasik S.E.
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.v3i2.25

Abstract

Bark of mangrove trees harbor populations of Littoraria scabra. The snails are preyed upon by aquatic and terrestrial predators. To investigate the main direction of predation, foui· Avicennia trees were seeded with 30 marked snails each. The snails were placed on trees variously protected by net cages: one tree with a fully closed cage to prevent access of all predators, one with a cage open above to allow entry of terrestrial predators, one with a cage open at the bottom to allow entry of aquatic predators. The fourth tree, without net, served as control. Snails were counted every 2 weeks. In the fully closed cage, the number of snails was relatively constant for 12 weeks, and survival was significantly different from the other trees. On the partly caged trees and the control tree, the number of snails declined drastically during the first four weeks. This indicates that aquatic predators (crabs), entering the tree from below, preyed on the Littoraria. Terrestrial predators, entering the tree trunk from above, are unknown.
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.

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