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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences Prosiding Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Biosaintifika: Journal of Biology & Biology Education Scripta Biologica Journal of Aquaculture and Fish Health BioEksakta : Jurnal Ilmiah Biologi Unsoed

Dwi Sunu Widyartini

Fakultas Biologi, Universitas Jenderal Soedirman

Author-ID : 437070

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education Environmental Science Immunology & microbiology Veterinary

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KELIMPAHAN CHRYSOPHYTA PADA MEDIA BUDIDAYA IKAN NILA YANG DIBERI PAKAN FERMENTASI DENGAN PENAMBAHAN TEPUNG KULIT UBI KAYU DAN PROBIOTIK Retno Ambarwati; Endang Widyastuti; Dwi Sunu Widyartini
Scripta Biologica Vol 1, No 1 (2014)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Chrysophyta is also known as golden-yellow algae because of the yellow dominant pigment of carotene and xanthophyll. This study aimed to determine species richness and abundance of Chrysophyta in the Tilapia culture media which was fed with the addition of cassava peel flour and probiotic. The method applied in this study was the experimental method with 4 treatments, i.e.: the use of fermented feed with the addition of cassava peel flour (0%, 25%, 50%, and 75%) and probiotic in Tilapia culture media. Each treatment was replicated 4 times. Sampling was carried out 6 times at intervals of 2 weeks. The observed parameters were the main parameters, i.e.: the number of Chrysophyta species and individuals; and supporting parameters, i.e.: water temperature, pH, TDS, TSS, NO3, NO2, BOD5, DO, and total of phosphate. Species richness and abundance of Chrysophyta data were analyzed using cluster analysis based on Bray-Curtis similarity coefficient. The analysis continued with Similarity Percentages (SIMPER) analysis to determine the contribution of species to the similarity index in each group or to dissimilarity index amongst groups. The results showed that the species richness found in the Tilapia media culture which was fed with the addition of cassava peel flour and probiotic consist of 20 species belonging to a class namely Bacillariophyceae. Abundance of Chrysophyta obtained was ranged from 5.160-13.292 individuals/liter. The cluster analysis showed that Chrysophyta amongst treatments have a quite high similarity level (> 50%) was ranged between 65.56% -83.99%. Contributions of species which contribute the highest similarity index were Diatoma vulgare (49.80%), Navicula brachysira (70.50%) and Navicula platystoma (82%).

STUDI KOMUNITAS RUMPUT LAUT PADA BERBAGAI SUBSTRAT DI PERAIRAN PANTAI PERMISAN KABUPATEN CILACAP Eti Ferawati; Dwi Sunu Widyartini; Ilalqisny Insan
Scripta Biologica Vol 1, No 1 (2014)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Seaweed naturally grows in substrate of sand, mixing between sand, mud and shell fragments, and also coral. Previous researches stated that there were types of seaweed that able to grow in more than one substrates. The aims of this research was to know the community structure such as diversity, domination, evenness, and similarity of seaweed on various substrates in Permisan beach, Central java. This research used survey method and samples were randomly selected for each substrate with quadrate of 1 x 1 m2. The research found that 20 kinds of seaweeds with biomass for about 4,669 g. Seven kinds of seaweed that grow in sand substrate with biomass for about 0,636 g, 20 kinds of seaweed in coral substrate with biomass for about 2,399 g, and 12 kinds of seaweeds in mixing substrate with biomass for about 1,634 g. Diversity index value in Permisan beach was ranging between 0,064-0,828 and categorized as low. Domination index value was ranging between 0,213-1,193, which means there was dominating variety. Evenness index value was ranging between 0,021-0,276, which means the community was unstable. The highest similarity index value was coral substrate-mixing for about 75%.

KELIMPAHAN CHLOROPHYTA PADA MEDIA BUDIDAYA IKAN NILA YANG DIBERI PAKAN FERMENTASI DENGAN PENAMBAHAN TEPUNG KULIT UBI KAYU DAN PROBIOTIK Heni Andriyani; Endang Widyastuti; Dwi Sunu Widyartini
Scripta Biologica Vol 1, No 1 (2014)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Chlorophyta is autotroph organisms which has an important role in fresh waters as one of the largest algae division. This study aimed to determine the abundance and similarity structure of Chlorophyta in Tilapia culture media which was given fermented feed with the addition of cassava peel flour and MEP+ probiotic. This study used four treatments with four replications: (A) fermented feed without addition of cassava peel flour or 0% and MEP+ probiotic administration in media, (B) 25%, (C) 50% and (D) 75%. Sampling was carried out 6 times at intervals of 2 weeks. The main parameters were the number of Chlorophyta species and individuals,while supporting parameters were physical (temperature and TDS) and chemical (DO, BOD, pH, NO3, NO2 and total of PO4). The abundance of Chlorophyta data were analyzed descriptively and its similarity structure were analyzed using Cluster analysis. Then, continued with SIMPER analysis to determine the contribution of species to abundance similarity with PRIMER-E v.5 software. Analysis results showed that the abundance of Chlorophyta consists of 33 species with the average number of 10.412 individuals/liter. Cluster analysis results based on Bray-Curtis similarity index had a quite high similarity and it ranged between 57.79% -68.84%. SIMPER analysis results showed that the species which given highest contribution were Kircheneriella lunaris (31,03%), Selenastrum sp. (21,69%), and Gonatozygon monotaenium (12,96%).

Co-Authors A. Ilalqisny Insan A. Ilalqisny Insan Ardiyanto, Bayu Ardli, Erwin Riyanto Christiani, Christiani Endang Widyastuti Eti Ferawati H. A. Ilalqisny Insan, H. A. Ilalqisny Hanifah, Wahdini Heni Andriyani Hexa Apriliana Hidayah Ilalqisny Insan Indyaswan Tegar Suryaningtyas Insan, Achmad Ilalqisny Insan, Achmad Ilalqisny Jasmadi Kamsinah Kamsinah Ms Warsinah, Ms Nafis, Bayu Ashila Retno Ambarwati Romanus Edy Prabowo Sandi Permadi Sarwanto Sarwanto Sherly Sapulete Solikin Sulistyani Sulistyani Sulistyani Suparmo

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