Karakter Morfologi Keong Darat Cyclophoroidea (Gastropoda: Caenogastropoda) dari Karst Padang Bindu, Sumatra Selatan Berdasarkan Koleksi Museum Zoologicum Bogoriense

Morphological Character of the Land Snail Cyclophoroidea (Gastropoda: Caenogastropoda) From the Karst of Padang Bindu, South Sumatra Based On the Collection of the Museum Zoologicum Bogoriense 

Keong darat merupakan kelompok hewan yang sering diabaikan namun berperan penting dalam ekosistem manusia dan alam, mulai dari dataran rendah hingga dataran tinggi, termasuk perbukitan karst. Salah satu kawasan karst, Padang Bindu di Sumatra Selatan, belum banyak diteliti terkait keanekaragaman keong darat. Penelitian ini bertujuan untuk memperbarui dan memvalidasi data komposisi spesies serta mendokumentasikan wawasan baru mengenai karakteristik morfologi dan hubungan kekerabatan keong darat Cyclophoroidea Karst Padang Bindu, Sumatra Selatan, berdasarkan koleksi Museum Zoologicum Bogoriense. Penelitian dilakukan pada Oktober 2023 hingga Maret 2024 di Pusat Riset Biosistematika dan Evolusi BRIN menghasilkan koleksi 3697 individu Cyclophoroidea. Data dianalisis secara kualitatif berupa deskripsi dan kuantitatif melalui pengukuran cangkang dan operkulum menggunakan perangkat lunak L.A.S V4.13.0 dan Image J. Analisis klaster menggunakan perangkat lunak NTSYS 2.11a juga dilakukan. Hasil penelitian mengidentifikasi 12 spesies dari empat famili (Cyclophoridae, Diplommatinidae, Pupinidae dan Alycaeidae) yang masing-masing memiliki karakter yang khas. Plectostoma kitteli merupakan spesies yang paling melimpah. Sebesar 63,89% dari total individu yang diperoleh, famili Alycaeidae secara konsisten mempunyai jumlah terbanyak jika mempertimbangkan jumlah individu per spesies. Penelitian juga mengungkap empat spesies endemik yang mewakili 26,7% dari total spesies Cyclophoroidea di Pulau Sumatra yang menggambarkan keanekaragaman hayati unik di kawasan tersebut. Hasil analisis kekerabatan Cyclophoroidea menunjukkan bahwa famili yang paling dekat adalah spesies dalam famili Diplommatinidae dengan famili Pupinidae. Terlepas jumlah spesies Cyclophoroidea yang diperoleh cukup sedikit, namun menyoroti pentingnya hal ini guna konservasi Karst Padang Bindu. Penelitian ini menggarisbawahi perlunya riset lebih lanjut untuk meminimalkan kesalahan identifikasi dan mengungkap kandidat spesies baru.

Land snails are an often overlooked group of animals that play important role in human and natural ecosystems, from the lowlands to the highlands, including karst. One of karst areas, Padang Bindu in South Sumatra, has not been studied much regarding the diversity of land snails. This study aims to update and validate species composition data and document new insights regarding the morphological characteristics and phenetic relationships of the Cyclophoroidea Karst land snail Padang Bindu, South Sumatra, based on the Museum Zoologicum Bogoriense collection. Research conducted from October 2023 to March 2024 at the Research Center of Biosystematics and Evolution, BRIN resulted in a collection of 3697 Cyclophoroidea individuals. Data were qualitatively analyzed with descriptions and quantitatively through shell and operculum measurements using L.A.S V4.13.0 and Image J software. Cluster analysis using NTSYS 2.11a software was also carried out. The research results identified 12 species belonging to four families (Cyclophoridae, Diplommatinidae, Pupinidae, and Alycaeidae), each with distinct characteristics. Plectostoma kitteli is the most abundant species. Amounting to 63.89% of the total individuals obtained, the Alycaeidae family consistently has the most numbers when considering the number of individuals per species. The research also uncovered four endemic species, representing 26.7% of the total Cyclophoroidea species on Sumatra Island, highlighting the area's unique biodiversity. The results of the Cyclophoroidea relationship analysis show that the closest families are species in the Diplommatinidae family and the Pupinidae family. Although the number of Cyclophoroidea species obtained is small, this shows its importance for Padang Bindu Karst conservation. This research emphasizes the need for further studies to minimize misidentification and discover new candidate species.