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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. 7 No. 1 (2023): April 2023" : 5 Documents clear
Macrozoobenthos Diversity at Mangrove Rehabilitation Area, Tangerang Regency: Ai Solihat; Ario Damar; Fery Kurniawan
Jurnal Moluska Indonesia Vol. 7 No. 1 (2023): April 2023
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v7i1.65

Abstract

Tangerang Regency has continued to rehabilitate its coastal ecosystems, especially mangrove areas that have been converted into ponds and abandoned. One of the functions of the mangrove ecosystem is as a habitat for biota, including macrozoobenthos. This study aimed to analyze mollusc diversity in the mangrove rehabilitated area in Tangerang. Macrozoobenthos sampling was carried out from February to March 2022 in Ketapang Villag (station 1), Patramangala Village (station 2), and Tanjung Pasir Village (station 3), by applying a 1×1 m2 quadratic transects. The mollusks found were from the class bivalves and gastropods. In general, mollusk abundance is the number of individual mollusks in an area. The composition of the mollusk species found were bivalves (42%) and gastropods (58%). The highest diversity index, uniformity index, and dominance index from the three villages were 1,8882, 0,6294, dan 0,5183. Based on the results of the study showed that the rehabilitation of mangroves is able to become a habitat for mollusks with a fairly high diversity. This is a good indication of the success of rehabilitation and ecosystem health. Key words : bivalves, gastropods, mangroves, mollusca, Tangerang
Study Of The Morphological and Anatomical Character Of The Genus Cyclophorus (Gastropoda: Cyclophoridae) in Indonesia and Their Phenetic Relationships Fatimah Novianti; Felicia Zahida; Wibowo Nugroho Jati; Ayu Savitri Nurinsiyah
Jurnal Moluska Indonesia Vol. 7 No. 1 (2023): April 2023
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v7i1.69

Abstract

Cyclophorus is one of the genera in terrestrial gastropods that inhabits forest floor, leaf litter, rocks, and decayed wood. This research aims to determine the morphological and anatomical characters of the genus Cyclophorus in Indonesia and its phenetic relationship. Descriptive method was applied by conducting observation of shell, operculum, as well as anatomical characters. Cluster analysis in Rstudio was conducted to analyze the morphological data and to see its phenetics relationship. Based on 214 shell and 21 genitalia, 12 Cyclophorus species and subspecies stored in the Museum Zoologicum Bogoriense (from the total of 20 species and subspecies in Indonesia) were identified. The morphological character of the Cyclophorus in Indonesia (shell and operculum) can be differentiated based on the shell shape, shell pattern, spiral bands, the number of whorls, shell diameter, and operculum. Diagnostic characters in the genitalia are the bursa copulatrix and oviduct (female), and penis (male). The cluster analysis shows the separation of adult shells and operculum into six (6) groups i.e. (1) C. nigricans from Sulawesi is allegedly a distinctive species of the eastern region in Indonesia; (2) C. rafflesi eximius from Sumatra and Java; (3) C. theobaldianus from Kalimantan; (4) C. rafflesi dan C. rafflesi rafflesi from Sumatra and Java; (5) C. schepmani and C. steveabbasorum from Sumatra which an allegedly the typical species of Sumatra; and (6) C. tuba plicifera, C. tuba, C. perdix, C. perdix perdix and C. perdix borneensis from Sumatra, Java and Kalimantan.
Molluscs Attached To A Rocky Substrate In The Manado Mall Reclamation Area, Bahu Sub-District, Manado Ni Luh Vegi Yulianti Yulianti; N. Gustaf F. Mamangkey Mamangkey; Indri Shelovita Manembu Manembu; Erly Y. Kaligis Kaligis; Medy Ompi Ompi; Suzanne Lydia Undap Undap; Marten Maxs Maxs
Jurnal Moluska Indonesia Vol. 7 No. 1 (2023): April 2023
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v7i1.77

Abstract

Cyclophorus is one of the genera in terrestrial gastropods that inhabits forest floor, leaf litter, rocks, and decayed wood. This research aims to determine the morphological and anatomical characters of the genus Cyclophorus in Indonesia and its phenetic relationship. Descriptive method was applied by conducting observation on shell, operculum, as well as anatomical characters. Cluster analysis in Rstudio was conducted to analyze the morphological data and to see its phenetics relationship. Based on 214 shell and 21 genitalia, 12 Cyclophorus species and subspecies stored in the Museum Zoologicum Bogoriense (from the total of 20 species and subspecies in Indonesia) were identified. The morphological character of the Cyclophorus in Indonesia (shell and operculum) can be differentiated based on the shell shape, shell pattern, spiral bands, the number of whorls, shell diameter, and operculum. Diagnostic characters in the genitalia are the bursa copulatrix and oviduct (female), and penis (male). The cluster analysis shows the separation of adult shells and operculum into six (6) groups i.e. (1) C. nigricans from Sulawesi is allegedly a distinctive species of the eastern region in Indonesia; (2) C. rafflesii eximius from Sumatra and Java; (3) C. theobaldianus from Kalimantan; (4) C. rafflesii dan C. rafflesii rafflesii from Sumatra and Java; (5) C. schepmani and C. stevenabbasorum from Sumatra which an allegedly the typical species of  Sumatra; and (6) C. tuba plicifera,  C. tuba, C. perdix, C. perdix perdix and C. perdix borneensis from Sumatra, Java and Kalimantan.
Species Diversity of Gastropods on Intertidal Zone Of Oma, Central Maluku Sara Haumahu; Prulley Annette Uneputty; Janson H. Pietersz
Jurnal Moluska Indonesia Vol. 7 No. 1 (2023): April 2023
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v7i1.81

Abstract

Zona intertidal merupakan lingkungan yang heterogen karena komposisi dan struktur habitatnya, sehingga mensuport keragaman flora dan fauna. Organisme yang ditemukan di zona intertidal berhadapan langsung dengan kondisi fisika-kimia selama periode pasang surut. Gastropoda dapat ditemukan di darat, perairan tawar, dan perairan laut. Saat ini, informasi tentang diversitas spesies gastropoda di zona intertidal Negeri Oma, Maluku Tengah, Indonesia masih sangat terbatas dan belum terdokumentasi. Penelitian ini bertujuan untuk mengidentifikasi spesies gastropoda, menentukan kepadatan dan diversitas spesies gastropoda yang ditemukan pada tiga zona intertidal Tuhurui, Sila dan Hitalawa di Negeri Oma, Maluku Tengah pada bulan Maret 2022. Sampling dilakukan dengan menggunakan metode transek garis. Lima transek ditempatkan pada masing-masing lokasi sepanjang 150 meter pada setiap transek. Kuadrat berukuran 1 m2 ditempatkan sepanjang garis transek dengan jarak antar kuadrat 10 meter. Ada enam ordo gastropoda (Lepetellida, Trochida, Cycloneritida, Littorinimorpha , Caenogastropoda dan Neogastropoda) yang termasuk dalam 24 famili dan 92 spesies yang ditemukan dalam penelitian ini. Jumlah spesies dan kepadatan gastropoda bervariasi berdasarkan lokasi sampling. Zona intertidal Hitalawa memiliki indeks keragaman spesies (H`) tertinggi (H` = 3.560) dibanding dengan index keragaman spesies pada zona intertidal Tuhurui dan Sila. Neritidae dan Muricidae merupakan spesies yang predominan pada semua lokasi sampling. Indeks keseragaman (J`) berkisar antara J`= 0,753 dan J`= 0,846. Indeks dominansi bervariasi antara D = 0,048 dan D = 0,073. Indeks keragaman spesies gastropoda dan keserasian spesies termasuk dalam kategori tinggi dan tidak ada spesies gastropoda yang mendominasi dalam komunitas. Penelitian ini memberikan kontribusi terhadap keragaman spesies moluska di perairan Maluku. Kata Kunci: Diversitas spesies, gastropoda, kelimpahan, keserasian, zona intertidal
Differences in shell morphology of the species Rochia nilotica (Linnaeus, 1767) and Rochia maxima (F. C. L. Koch, 1844) (Gastropoda: Tegulidae) Bunjamin Dharma; Delianis Pringgenies
Jurnal Moluska Indonesia Vol. 7 No. 1 (2023): April 2023
Publisher : Masyarakat Moluska Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54115/jmi.v7i1.82

Abstract

Rochia nilotica (Linnaeus, 1767) previously known as Trochus niloticus Linnaeus, 1767, is known in Indonesia by the local name “lola” or “lolak”. In Indonesian waters, “lola” is easily and widely found, its shiny shell has a high selling value and is an industrial commodity with an export orientation. The other most similar species is Trochus maximus F. C. L. Koch, 1844. In adult shells, T. niloticus and T. maximus are easily distinguished by the shape of their shells; but their juvenile and semi-adult shells are easily confused with one another. Both species have large shells, 110-120 mm in diameter and 115-140 mm in height. Initially, these two species were included in the genus Trochus Linnaeus, 1758 of the family Trochidae Rafinesque, 1815. Bouchet & Rocroi, 2005 in the “Taxonomy of the Gastropoda“ approved the validity of the family Tegulidae Kuroda, Habe, & Oyama, 1971 of the superfamily Trochoidea Rafinesque, 1815, separate from the family Trochidae Rafinesque, 1815. These two large species are included in the genus Rochia Gray, 1857 from the family Tegulidae, becoming Rochia nilotica (Linnaeus, 1767) and Rochia maxima (F. C. L. Koch, 1844). Included in the family Tegulidae, among which are the genera Rochia Gray, 1857; Tectus Montfort, 1810; and Tegula Lesson, 1833. This paper discusses the differences between the two species Rochia nilotica (Linnaeus, 1767) and Rochia maxima (F. C. L. Koch, 1844) in terms of shell morphology. KEYWORDS: Tegulidae, Rochia, nilotica, maxima

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