Search

Indonesia is one of the countries with high biodiversity of freshwater fishes. One of the rivers with high freshwater fish diversity is Arut River located in West Kotawaringin, Central Kalimantan. Freshwater fish which is commonly found in the Arut River is striped snakehead. The fish is popular to be consumed by the community due to its delicate and its high nutrient content. However, the research on the genetic characterization of the striped snakehead from Arut River by applying the COI mitochondrial gene has not been conducted. By this reason, the aim of this research was to analyze the genetic characterization of the striped snakehead from Arut River by using the COI mitochondrial gene. The research applied a PCR method with primer F2 and R2. The result exhibited that the five samples of the striped snakehead investigated in this study had 2 haplotypes with 1 variable site without parsimony site. The haplotype diversity and nucleotide diversity were 0.400±0.237 and 0.00068± 0.0004 respectively with a genetic distance of approximately 0.08%. This finding indicates that intrapopulation genetic variation of the fish species is low. In addition, both haplotypes formed on the striped snakehead investigated in this study was different from the striped snakehead from other regions in Indonesia and Southeast Asia, so it can be used as a molecular marker of the striped snakehead from Arut River. [ABSTRACT FROM AUTHOR]

The Sugihan wetlands is conducted in 2016 to 2019. Three field visits were carried out to looking at how many number of bird an unique landscape in Ogan Komering Ilir district, South Sumatra province, Indonesia. The area covering is about 2.863 km2, mostly dominated by wetlands, ranging from peatland to the mangrove zone and including Padang-Sugihan Wildlife Reserve. A survey to asses bird diversity in Sugihan wetlands has been species in this areas. There are 45 species of birds found in Sugihan wetlands, including two species listed as threatened by IUCN (International Union for Conservation of Nature), nine species protected by Indonesian law, and five species listed as CITES (The Convention on International Trade in Endangered Species of Wild Fauna and Flora) appendix II. Presence of threatened, protected species by Indonesian law and number of listed species under CITES appendix II suggest Sugihan wetlands as important habitat for birds. [ABSTRACT FROM AUTHOR]

Striped snakehead (Channa striata Bloch, 1973) is a freshwater fish commonly consumed by local citizens in Indonesia. Overfishing and habitat fragmentation due to pollution, illegal logging, and land conversion conduce a decline in this fish population in its habitat. Therefore, a policy is needed for the conservation of the fish species in its habitat and increase in the fish production through a breeding program. Providing genetic data information can play an important role for conservation and breeding program of the fish species. Research on genetic characterization of striped snakehead from Indonesia based on 16S mitochondrial sequence data is poorly known. Therefore, the aim of this research was to analyze mitochondrial DNA 16S sequences of striped snakehead collected from Ogan River, Banyuasin, South Sumatra. In this study, four samples of striped snakehead (GBO-01, GBO-02, GBO-03, and GBO-04) were collected from Ogan River, Banyuasin, South Sumatra. In addition, eight sequence samples of striped snakehead (C. striata) from GenBank (accession number KX177965, KU986899, KT358477, KT358478, HM117222, HM117223, KC200558, KC200559) were used as a comparison purpose. The method used in this study was a PCR method with universal primers, 16Sar and 16Sbr. The results revealed that the average composition of mtDNA 16S nucleotide of striped snakehead investigated in this study was A= 30.72%, T= 21.08%, G= 22.49%, and C= 25.70%, while the average A+T and G+C was 51.81% and 48.19% respectively. In addition, the four samples of striped snakehead from the Ogan River, Banyuasin, South Sumatra have only one haplotype and separated from other haplotypes from Malaysia, China, and India. This specific haplotype which was not mixed with other striped snakeheads from other countries can be used as a molecular marker for the striped snakehead from Ogan River. [ABSTRACT FROM AUTHOR]

Bioacoustics research is an effort to know and solve a signal code of acoustic fauna. In which every fauna has unique and specific sound characters. Acoustic signal was used by fauna to communicate with others. They use it for some needs in an ecosystem. Paddy field is a human-made ecosystem that has a function as a fauna habitat. This research is aimed at knowing bioacoustics composition in paddy field ecosystem in Southern Slope of Mount Merapi, Yogyakarta. The data was taken on October 2018. Passive acoustic monitoring method was used to collect the data. The result is showed that it has 43 variations of sound types. It divided into three classes, the first is Amphibia (13 sound types), the second is Aves (17 sound types), the last is Insects (13 sound types). This research showed that passive acoustic monitoring method can be used as biodiversity monitoring method and it also use to know the effect of environmental change to an ecosystem. [ABSTRACT FROM AUTHOR]