Diversity report of freshwater gastropods in Buton Island, Indonesia

Abstract

Abstract. Purnama MF, Sirza LOMJ, Sari SF, Salwiyah, Haslianti, Abdullah, Suwarjoyowirayatno, Findra MN, Nurhikma, Agriansyah A, Hidayat H, Syukur, Anwar K. 2022. Diversity report of freshwater gastropods in Buton Island, Indonesia. Biodiversitas 23: 1938-1949. This study was located in Buton Island consisted of 5 administrative districts/cities (Baubau City, Buton District, South Buton District, Muna District and North Buton District) and was conducted for 1 year (August 2019-August 2020). The output is to reveal the potential richness of the biodiversity of freshwater gastropods as a first step to optimize the utilization of freshwater gastropod resources in the Buton Islands. Determination of sampling location for gastropods was carried out by purposive sampling method and the selection of gastropod samples using simple random sampling method at a predetermined location based on the presence of gastropods. Gastropod samples (epifauna/infauna) were collected manually without special fishing gear with gloves, paralone pipes (3.5 inches), and filter (1 mm). The gastropods found in Buton Island consist of 18 genera and 40 species. Freshwater gastropods spread over 8 families, namely Cyclophoridae, Planorbidae, Lymnaeidae and Thiaridae. Among the species, there are several invasive alien species (IAS) such as Tarebia granifera, Melanoides tuberculata and Achatina fulica. These three species always dominate the habitat space where they are found. Most gastropod communities in 5 districts/cities live in fast-flowing rivers with rock, gravel and sand substrates. Only a few of them are found in artificial inland waters such as rice fields, embankments, dams and drainage. This study became a first step to optimize the utilization of gastropod resources and sustainable management, especially related to the conservation of native species from the threat of IAS.

Ecological Index of Freshwater Gastropod in Buton Island, Southeast Sulawesi

“…Pulau Buton memiliki biodiversitas sumberdaya perairan yang besar, baik itu perairan tawar (freshwater) dan perairan payau (brackish water) maupun perairan pesisir dan laut-nya. Selain potensi sumber daya laut yang yang menjanjikan, Pulau Buton juga dianugerahi kekayaan kawasan daratan khususnya sektor perikanan tawar yang menjadi salah satu sumber vital mega biodiversity endemik lokal (Purnama et al, 2022a;Purnama et al, 2021;Sirza et al, 2020;BPS Sultra, 2020).…”

The Mangrove Density, Diversity, and Environmental Factors as Important Variables to Support the Conservation Program of Essential Ecosystem Area in Muara Kali Ijo, Pantai Ayah, Kebumen

“…The EEA in Muara Kali Ijo aims to support the conservation of the mangrove ecosystem as an essential ecosystem in Pantai Ayah, Kebumen, because the mangrove ecosystem has a specific affinity (Hilmi et al 2021e), specific environment (Hilmi et al 2021a(Hilmi et al , 2022bXiong et al 2018), specific habitat (Hilmi 2018;Hilmi et al 2021d;Purnama et al 2022), and specific ecosystem (Cochard 2017;Hilmi et al 2015;Lapolo et al 2018). In addition, the mangrove ecosystem in Muara Kali Ijo also has specific functions to reduce and protect tidal flooding (Hilmi et al 2022a;Marois and Mitsch 2017) and permanent water inundation (Bomer et al 2020), decreasing of coastal disasters (Cooray et al 2021;Nur and Hilmi 2021), decreasing of heavy-metal pollution (Chen et al 2021;Hilmi et al 2017b;Syakti et al 2013;Xin et al 2014;Zhang et al 2019), support carbon conservation (Hilmi 2017a), and support feeding, nursery dan spawning activity (Jones et al 2015;Lapolo et al 2018;Nurhayati et al 2021;Reis et al 2021).…”

Short Communication: Invasive mollusks Melanoides tuberculata, and Achatina fulica in Southeast Sulawesi, Indonesia

“…The presence of invasive alien species (IAS) in the freshwater and terrestrial habitat of Southeast Sulawesi Province has become one of the leading causes that can shift and get rid of indigenous or native water species. The presence of IAS has invaded the freshwater waters of Southeast Sulawesi (Purnama et al 2020(Purnama et al , 2021Sirza et al 2020;Oetama and Purnama 2022;Purnama et al 2022aPurnama et al , 2022bSalwiyah et al 2022), including other areas in Indonesia (Afkar and Aldyza 2017;Assuyuti et al 2017;Purbasari 2017;Syaifudin et al 2017;Rustiasih et al 2018;Viza 2018;Safa'ah and Primiani 2018;Athifah et al 2019) and it has been a global concern hitting several major countries in the world.…”

“…Moreover, this introduction also encompasses research activities, for example, the exchange of genetic material, biological specimens, microbial culture collections and laboratory equipment. Several invasive mollusk species have been identified, such as Melanoides tuberculata (Purnama et al 2019(Purnama et al , 2022a(Purnama et al , 2022bBarros et al 2020;Khanam et al 2020;Lopes et al 2020;Okumura and Rocha 2020;Alfaro et al 2021;Lopes et al 2021;McClure 2021), and Achatina fulica (Gregoric et al 2011;Purnama et al 2019;Barbosa et al 2020;Oliveira et al 2020;Song et al 2020;Cano-Pérez et al 2021;Dumidae et al 2021) Their biological properties are highly resistant to water quality change, making them quickly colonize new environments. These two invasive mollusks have been a major concern in many parts of the world.…”

“…Since 1933, the snails have been around the city of Jakarta, with other sources stating that the Achatina fulica snail entered Indonesia in 1942 (during the Japanese occupation). These invasive species have widely spread in Indonesia, especially in Southeast Sulawesi Province (Purnama et al 2019;Oetama and Purnama 2022;Purnama et al 2022aPurnama et al , 2022bSalwiyah et al 2022). Therefore, an empirical study related to the spatial distribution of the three invasive alien species is required primarily related to their distribution in the inland waters of Southeast Sulawesi Province.…”