Judul: Morphological and molecular genetic characters of Barb (Barbonymus balleroides Val. 1842; Cyprinidae) in Serayu River Central Java.
Abstrak: The goverment builded the Mrica Reservoir in Banjarnegara at 1988. The reservoir affected of fish population and community in the ecosystem. The research aimed to evaluated the morphological and genetic characters of the Barb (Barbonymusballeroides) at several habitats in Serayu River. The research was conducted during February to September 2013. Sampling was carried out used applying purposive sampling method, continued by road sampling at six stations representing three zones, i.e., upper, middle, and lower zones. Fishing gear used were net, gill net and electrofishing. Morphological characters were completed based on morphometric, meristic, and asymmetric characters with the R (PCA and Discriminant). Definitive species identification and genetic difference between locationswere accomplished using mithochondrial DNA marker, cytochrome oxidase 1 (CO1) using Mega 4 programe. Physical and chemical characteristics of aquatic environment were observed based on position of the stations. Physical and chemical characteristics of aquatic environment indicated that the condition of sampling stations to support fish survival. Morphologically, Barb of the Serayu River was separated into two groups, group A inhabiting lower zone of the reservoir (station I and II) and group B inhabiting the middle zone (station III and IV), and the upper zone (station V and VI). Morphological clustering distance between Barb in station I and II were 2.5; while between group A and B were 8.53. Whereas, meristic analysis did not show any separation of fish population. Genetic analysis based on mtDNA CO1 of Barb in the sampling stations was successfully accomplished, resulting in 710 bp in fragment length. Phylogenetic analysis showed that six samples of the Barb formed one cluster and separated from outgroup (B. gonoinotus dan Puntius orphoides) with genetic distance of 6.34%. It implied that species identification of the Barb (B. balleroides) was true. Be found intraspecific variation on Barb of Serayu River genetic distance analysis using p-distance performed two clusters with the value of 2%. The first was Barb of station I and II, and the second was stations III, IV, V, and VI. Genetic distance between stations of III and IV was 0.15%; while between station V and VI was 0.3%. Genetic difference based on CO1 gene between station I and II was 2%.
Keyword: Fragmentation, mtDNA, habitat

Judul: Biologi Reproduksi Ikan Brek (Barbonymus balleroides Cuvier & Val. 1842) Di Sungai Serayu Kabupaten Banjarnegara Provinsi Jawa Tengah
Abstrak: The Serayu River, a major river in Central Java Province, crosses five regencies including Banjarnegara Regency. In Banjarnegara, there was built a reservoir called Panglima Besar Jenderal Soedirman Reservoir. The reservoir construction caused habitat fragmentation which splits Serayu River into two different ecosystems, running water ecosystem and stagnant water ecosystem. Inderectly the habitat fragmentation affects the species existence of fish that lived in the reservoir. Barb is one of the fish species, which found in the Serayu River tends to decrease in population. The aims of this study are to examine reproduction aspects and alternative management of barb in Serayu River. The fish samples were taken from October 2012 to March 2013 in three zones (downstream, middle stream, and upper stream of Jenderal Sodirman reservoir), consisting of 6 stations. Fish samples were caught using nets, gill nets and electrofishing. The samples were analyzed to find out the length, weight, sex ratio, gonad maturity index, fecundity, egg diameter and egg quality. The barbs were caught 1,358 consisted of 642 males and 716 females, with total length varied in the range between 58-245 mm and weight range between 2- 155 g. The most of fish captured were obtained in the upstream zone, consisted of 233 males and 239 females. The growth pattern of male and female fish was a positive allometric. The sex ratio during the study was 1:1.12. Male barb reached first gonad maturity at a size of 152 mm while female fish 169 mm. Based on gonad maturity stage and a peak gonad maturity index, the spawning occurred in October. The fecundity of barb was about 2,760-25,290 eggs and the barb fish as a total spawner. The highest percentage of eggs quality in barb was protein and then followed by fat and carbohydrate respectively. Based on the analysis result, amino acid, and glutamic acid had the highest percentage. Habitats fragmentation influenced barb reproduction.
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Judul: Kajian Penggunaan Zeolit dan Kalsium Oksida sebagai Sumber Pemanas Kemasan Kaleng Panas Sendiri (self-heating can).
Abstrak: Penelitian ini mengkaji penggunaan zeolit sebagai alternatif sumber pemanas pada kemasan kaleng panas sendiri yang umumnya menggunakan kalsium oksida. Pada penelitian ini telah dilakukan proses kalsinasi pada suhu 550 oC selama 24 jam terhadap zeolit dan kalsium oksida untuk pembakaran awal dengan tujuan menghilangkan zat-zat yang tidak diinginkan. Kemudian telah dilakukan pengukuran suhu reaksi campuran sejumlah sampel dengan sejumlah air pada masing-masing perbandingan. Hasil penelitian menunjukkan reaksi air dengan kalsium oksida menghasilkan suhu tertinggi pada perbandingan 3:1 dengan ratarata perubahan suhu 46.37 oC. Sedangkan reaksi air dengan zeolit menghasilkan suhu tertinggi pada perbandingan 1:2 dengan rata-rata perubahan suhu 39.27 oC. Massa kalsium oksida yang digunakan 5.00 gram dan zeolit yang digunakan 28.00 gram. Kemudian telah dilakukan pengukuran perubahan volume sampel yang direaksikan dengan air, hasilnya kalsium oksida dan air memiliki kenaikan volume 1.00 ml sedangkan zeolit memiliki kenaikan volume 2.00 ml. Dari hasil penelitian ini dapat disimpulkan bahwa zeolit ternyata belum mampu untuk menggantikan kalsium oksida sebagai sumber pemanas self-heating can dari aspek kapasitas panas yang dihasilkan dan nilai ekonomis penggunaan bahan.
Keyword: kaleng panas sendiri, kalsium oksida, kemasan aktif, sumber pemanas, zeolit