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"The information on fish fauna in Belitung Island is still lacking. The study of ichthyofauna of Belitung Island was conducted in Pebruary-March 2002 and August 2003, using survey methods. The aims of studies are to know species richness, potency, local distribution, and related aspects. The results were recorded 60 species belonging to 27 families. Cyprinidae is dominant family with 13 species. The fishes were found almost have potency of ornamental fish. It was found that Eirmotus octzona, Acanthopsoides robertsi, Pangio shelfordii, Silurichthys hasseltii, Parakysis verrucosa, and Gymnochanda filamentosa extend their range to Belitung (new record for Belitung). Status, potency and utilization of fishes, new records distribution of geography, social economic and conservation aspects are represented in this paper. The information about freshwater fishes from Belitung Island is still rare. Last information was reported by de Beaufort in 1939. The objective of the research is to reveal the diversity of fishes in Belitung Island and to reveal their potency and utilization, distribution, abundance, and related aspect for their management and conservation. The research was conducted at Belitung Island, Province Archipelago of Bangka Belitung, between 2002 and 2003. Location of research in Lenggang River, Buding, Balok, Kembiri, Pala, and Air Raya Gunung Tajam. Survey method is used in this research. Specimens were collected from 21 location in six rivers by electrofishing (12 volt), gillnet (mesh size ½', ¾', and 1'), cast net, and hook. Fish specimens were fixed by using formalin 10% then soaked in alcohol 70%. All specimens are deposited at Museum Zoologicum Bogoriense, Bogor, as permanent collections. Fish identification was based on Weber and de Beaufort (1916; 1936; 1953; 1965), Inger & Chin (1962), Roberts (1989), Kottelat et al. (1993), and Eschmeyer (1998). In general, these established localities followed the variety of the landscape available such as: primary forest, secondary forest, 'kerangas' forest, agroforestry, villages, and estuary environments. Informal interview was conducted with the villagers especially with those who were familiar with fishing activities. There results were recorded 60 species belonging to 27 families. Cyprinidae is dominant family with 13 species. The fishes were found almost have potency of ornamental fish. It was found that Eirmotus octozona, Acanthopsoides robertsi, Pangio shelfordii, Silurichthys hasseltii, Parakysis verrucosa, and Gymnochanda c.f. filamentosa extend their range to Belitung (new record for Belitung). There were Tengkelesa'/Arwana (Scleropages formosus) in Lenggang River. According to the CITES, Tengkelesa' status is in Appendix I with a note captivity in Appendix II. Scleropages formosus has been protected by regulation, while according to the Governmental Legislation No.7 in 1999. Lenggang River is one of the largest water catchment area in Belitung Island. It has much more variation of riparian habitat than the other river. The number of species and family fish decreased closer to the river mouth. Factor which may influence this are the presence of plant material, the presence of a shading canopy, and the presence dam. The range of local distribution is 0,64-5,13%. Puntius gemellus is widest distributed and most abundanced. Segment of Lenggang River would conserve the continuing populations of Scleropages formosus. This habitat establishing small harverst reserves or fishery reserves (called 'Suaka Perikanan), where local community could manage this reservat could be perfomed. Activities related to this conservation habitat, controlled fishing activity or environmentally sound fishing should be encouraged. In line with the effort to increase individual income in the area, segment of the river from the mouth of the river could function as scientific and/ or adventurous tourism."

"Akhir-akhir ini ikan dari perairan darat Indonesia sudah jarang ditemukan di pasaran, kalaupun ada harganya akan sangat mahal. Selain produksinya yang menunan terus, ukurannya pun jarang yang besar. Keadaan ini menjadi suatu tanda bahwa ikan air tawar yang hidup sekarang ini di perairan darat Indonesia tidak lagi memiliki kesempatan untuk tumbuh dan berkembang.Keadaan ini menyadarkan manusia untuk dapat memenuhi kembali kebutuhannya serta menyediakan kembali ketersediaan sumberdaya ikan dengan mengusa fakan budidayanya. Odum (1971) mengemukakan bahwa bila populasi alam dimanfaatkan sampai batasnya, dan berkurang karena pengambilan ikan yang melampaui batas, maka tentu saja perhatian akan beralih kepada pemeliharaan ikan, atau budidaya air, terutama karena budidaya semacam itu dapat merupakan cara yang efisien untuk memproduksi pangan protein.Budidaya diharapkan dapat menghasilkan produksi yang selalu meningkat sehingga selain dapat menyediakan kebutuhan protein ikan sehari-hari juga dapat menjaga kelestarian dari keanekaragaman hayati ikan air tawar.Khususnya di Ibun, salah satu kecamatan di Kabupaten Bandung, masyarakat telah sejak dulu ikut berperanserta dalam pembudidayaan ikan air tawar. Namun, peranserta yang selama ini ada hanya terkait dengan kegiatan pemanfaatan dan berorientasi pada ekonomi tanpa memperhatikan kelestarian ikan air tawar. Maka, diperlukan peranserta yang aktif dari masyarakat pembudidaya ikan air tawar dalam hal perlindungan, pelestarian dan pemanfaatan secara lestari terhadap kualitas dan kuantitas ikan air tawar.Berdasarkan uraian di etas, maka yang pertu ditetiti adalah budidaya ikan yang dapat meningkatkan produksi ikan air tawar dan pengaruh peranserta masyarakat dalam budidaya ikan air tawar terhadap kelestarian keanekaragaman hayati.Penelitian ini menggunakan metode survei dan bersifat deskriptif analisis. Pemilihan responden sebagai sampel penelitian dilakukan dengan metode penarikan sampel secara acak sederhana. Teknik analisis data yang digunakan dalam penelitian ini adalah dengan menggunakan SPSS (Statistical Product and Service Solutions) yang mencakup perhitungan frekuensi, ANDVA, korelasi, dan chi-square.Hasil penelitan yang dapat dipaparkan adalah:Produksi ikan tertinggi dihasilkan oleh masyarakat yang memiliki sistem budidaya kolam air tenang, setelah itu masyarakat yang memiliki sistem budidaya minapadi, potikultur/tumpangsari, kolam air deras, keramba, dan yang paling sedikit produksinya adalah masyarakat dengan sistem budidaya jaring apung. Jenis ikan yang paling banyak dibudidayakan adalah jenis ikan mas, lale Jumbo, nila, dan ikan nitem.Berdasarkan jawaban dari 120 responden yang diberi kuesioner, sekitar 0,83% memiliki tingkat persepsi sangat baik, 60,83% baik, dan 38,34% memiliki tingkat persepsi cukup. Tingkat peranserta masyarakat masih sangat rendah dengan nilai 85,83%. Tingkat peranserta masyarakat kategori rendah sebanyak 5,87%, cukup 3,33%, dan kategori tinggi hanya sebanyak 4,17%.Setelah melakukan penelitian dan pembahasan terhadap data yang didapatkan, maka ditemukan kesimpulan sebagai berikut:1. Budidaya ikan yang diiakukan masyarakat Desa Lampegan bervariasi dalam sistem budidaya dan jenis ikan. Budidaya yang dilaksanakan terdiri dari pembenihan dan pembesaran ikan. Kesemuanya ini menghasilkan produksi ikan yang meningkat dari waktu ke waktu, bagi pemenuhan konsumsi gizi dan peningkatan pendapatan keluarga.2. Persepsi masyarakat terhadap budidaya ikan sudah cukup tinggi, namun peranserta masyarakat masih sangat rendah. Oleh karena itu belum terlihat ada pengaruh peranserta masyarakat terhadap budidaya yang mereka lakukan selama ini.

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People Participation in Sustainable Freshwater Fish Cultivation (Study Case in Lampegan Village, Ibun Subdistrict, Bandung District, West Java)Recently, fish in the Indonesia's fresh water is rarely found in the market. Because of that, it is very expensive to buy. The production keeps going down and about the size never have a big one. This situation became a sign that freshwater fish in Indonesia's water never have a chance to grow and develop.

This situation realized people to get back to fulfill human needs and to provide fish resources by develop the cultivation. In Odum (1971) explained that if natural population (in this case is fish) is used and reach the limits, people will take many ways to get back to maintain fish or fish cultivation. It is an efficient way to produce protein food.

The cultivation is expected success in production, daily fish protein needs, and conservation. In Ibun, one of the sub Districts of Bandung District, people always participate in freshwater fish cultivation. People participation only connect with economy activity without consider the freshwater fish conservation. Because of that, people in this village should participate actively in freshwater fish by conservation, protection, and sustainable cultivate to get good quality and large quantity of freshwater fish.

The problems of this research are as follows: What kinds of fish cultivation can increase the production of freshwater fish and how the impact of people participation in fish cultivation that can conserve the biodiversity?

The research is using a survey method and type of this research is descriptive analysis. Respondent election as a research sample is using a simple random sample method. Data analysis is using a SPSS (Statistical Product and Service Solutions) which includes frequency, ANOVA, correlation, and chi-square calculation.

The results of this research are as follows:

The highest fish production is produced by people who have a quiet pond cultivation system, after that people who has minapadi cultivation system, polyculture / intercropping, fast pond, keramba, and the lower production is produced by people who has a float nit cultivation system. The fish type, which is the most, cultivated, is gold fish, fete freshwater catfish, nila, and nilem.

The questioner is given to 120 respondents. About 0,83% from 120 respondents have a very good perception level, 60,83% has a good perception level, and 38,34% has an enough perception level. The lower people participation level is about 85,83%, low people participation level is about 6,67%, enough people participation level is about 3,33% and the highest participation level is about 4,17%.

The conclusions of this research are as follows:

1. The fish cultivation in Lampegan village is several of cultivation system and fish type. The implementation of cultivation consists of seeding and growing fish. This implementation can produce fish that increases progress. It can increase family income and nutrient needs.

2. The people perception in fish cultivation is high enough, but the people participation is very low. So there is no impact of people participation to fish cultivation in this study area."

"Telah dilakukan pencacahan secara kualitatif dengan metode subsampel terhadap sampel fitoplankton dan zooplankton yang berasal perairan Teluk Jakarta, Sungai Ciliwung, dan Situ Cikaret. Sampel plankton dicuplik dari stasiun yang telah ditetapkan di masing-masing tipe perairan pada bulan Agustus dan Oktober 1998. Untuk mengetahui hubungan kuantitatif antara fitoplankton dengan zooplankton dilakukan uji korelasi Spearman. Hasil analisis menunjukkan bahwa hubungan antara fitoplankton dan zooplankton di perairan Teluk Jakarta dan Situ Cikaret pada bulan Oktober bersifat positip. Korelasi negatip ditunjukkan oleh hubungan antara fitoplankton dan zooplankton di Sungai Ciliwung dan Situ Cikaret pada bulan Agustus. Hubungan negatip antara fitoplankton dan zooplankton di Situ Cikaret disebabkan oleh tingkat pemakanan fitoplankton oleh zooplankton. Alasan ini tidak berlaku untuk hubungan yang sama di Sungai Ciliwung. Secara keseluruhan, hubungan antara fitoplankton dan zooplankton yang terjadi di tiga tipe perairan tersebut di atas tidak dapat diterangkan oleh ketiga teori hubungan fitoplankton dan zooplankton yang ada. Perbedaan kimia fisik perairan dan komposisi struktur komunitas plankton diduga sebagai salah satu penyebab tidak selarasnya hubungan antara fitoplankton dan zooplankton dari ketiga tipe perairan dengan teori yang ada. Hasil pencacahan menunjukkan bahwa kepadatan plankton (dalam log 10) di tiga tipe perairan sangat fluktuatif berkisar antara 4,1541 - 7,7962 untuk fitoplankton di perairan Teluk Jakarta dan 0 - 6,2286 untuk zooplankton di Sungai Ciliwung. Kelompok fitoplankon yang dominan adalah Bascillariophyta di perairan Teluk Jakarta dan Sungai Ciliwung, sedangkan di Situ Cikaret adalah Cyanophyta. Untuk zooplankton Copepoda merupakan kelompok dominan di perairan Teluk Jakarta, sedangkan di Sungai Ciliwung dan Situ Cikaret didominasi oleh kelompok Rotifera."

"The freshwater clam, locally known as Pokea, (Batissa violacea var celebensis, von Martens 1897; Bivalvia: Corbulidae) is a popular and widely consumed food in Kendari, Southeast Sulawesi. Despite its popularity, basic information required for conservation managenment, such as reproductive biology, is lacking. This study aims to examine the reproductive biology of the clam obtained from the Pohara River, Kendari. Pokea samples were collected monthly from February 2012 to January 2013. We recorded parameters of reproductive biology, including sex ratio, stage of gonadal maturity, gonadosomatic index (GSI), fecundity, and size of the first mature gonad from each sample. Data were analysed using chi-square test and linear regression in the package Sigma Plot v.6.0. Pokea population in the Pohara River was male-biased. The population spawns throughout the year and the peak spawning season was August-September. Mature gonad was found at small shell size (indicating early sexual maturity). Food availability might have influenced the gonadal development in Pokea. This baseline information is very relevant for conservation practices of Pokea population in the Pohara River."

"Many freshwater ecosystems are currently threatened by increasing salinity caused by both natural occurance human induced salinity."

"Ikan tawar lele banyak dibudidayakan di Kota Depok. Selain karena kondisi fisik yang mendukung, budidaya ikan lele dinilai lebih mudah dan cepat bila dibandingkan dengan budidaya ikan air tawar lainnya. Luas kolam budidaya di Depok semakin menurun dari tahun 2005 - 2007, namun produksinya terus meningkat. Hal tersebut menandakan produktivitas yang meningkat pada periode tersebut.Tujuan dari penelitian ini adalah untuk mengetahui pola keruangan budidaya ikan air tawar lele di Kota Depok berdasarkan jarak dari hulu sungai. Sungai yang akan dianalisis adalah sungai Angke, Pesanggrahan dan Ciliwung. Kemudian akan dianalisis mengenai hubungan produtivitas dengan jarak dari hulu sungai dengan menggunakan analisis statistik dan keruangan. Selain itu akan dilihat pula kaitan produktivitas dengan teknologi budidaya ikan. Sehingga akan menghasilkan pola keruangan produktivitas budidaya ikan air tawar lele di Depok.Hasil yang didapat adalah semakin jauh jarak lokasi budidaya ikan lele dari hulu sungai, semakin kecil produktivitasnya. Dari tiga variabel teknologi pertanian, hanya variabel jenis pakan yang memiliki beda rata-rata produktivitas ikan lele yang signifikan. Variabel jenis pakan memiliki korelasi positif dengan produktivitas budidaya ikan lele.

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Many Freshwater Fish (Clarias sp.) has cultivated in Depok City. Beside supported by physical landscape which suitable for Clarias sp., Clarias sp. cultivation was easier dan faster to take care than another fish freshwater cultivation. The area of fishpond in Depok was decrease from 2005 until 2007, but the production was increase in the same period.

The goal of this reaserch is to know about spatial pattern of freshwater fish (Clarias sp.) cultivation productivity in Depok City which based on length from upper course of river. The river that will be analysis are Angke, Pesanggrahan, and Ciliwung. After that, will be analysed about correlation between productivity and length from upper course of river, with statistical and spatial analysis. The next step is will be analysed about correlation between productivity and freshwater fish cultivation technology.

The result of this research is more far the Clarias sp.cultivation location from upper course, the Clarias sp. productivity is more deacrease. From three freshwater fish cultivation technology variables, just feed variable that has positive correlation with productivity."

"A rapid multiresidue method for the determination of 22 organochlorine pesticides and 7 polychlorinated biphenyl compounds as POPs contaminant was described. It involved the application of modified QuEChERS procedure followed by gas chromatography electron capture detector (GC ECD) analysis. The limits of detection (LOD) and quantification (LOQ) of the developed and validated method in fish tissue were 3 g/kg and 10 g/kg, respectively.The following validation parameters were within acceptable range: specificity and selectivity, linearity, accuracy and precision (at levels: 10, 15 and 50 g/kg, the recovery test values were between 70 and 120% and HorRat ≤2, except hexachlorobenzene and methoxychlor). The application of the method was verified by analyzing a total of 182 freshwater animal samples produced and collected in Thailand during 2017 2018. Detectable POPs residues were found in 1.6% (3 shrimp samples) of the animal samples. One of the positive samples was contaminated with pp DDE which was DDT metabolite (<10g/kg). Two shrimp samples presented residue of PCB52 congener (<10 and 30 g/kg). No sample had contamination higher than the extraneous maximum residue limit (EMRL) set by Ministry of Public Health of Thailand and Codex. Base on the most risky freshwater animal, primary risk assessment using shrimp daily intake of Thai population data has shown that DDT and PCB compounds contain in shrimp are unlikely to pose any health risk to Thai consumers."