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Dewi Kresnasari
Program Studi Ilmu Perikanan, Universitas Nahdlatul Ulama Purwokerto
Agriculture, Biological Sciences & Forestry

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Pengaruh Pengawetan dengan Metode Penggaraman dan Pembekuan Terhadap Kualitas Ikan Bandeng (Chanos chanos) Dewi Kresnasari
Scientific Timeline Vol. 1 No. 1 (2021)
Publisher : UNU Purwokerto

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Fish is a source of animal protein that all levels of society can accept. This protein's benefits will be obtained optimally if the fish's quality remains in the excellent category. A preservation method such as freezing and salting is needed to maintain the excellent quality of fish. This study aimed to determine the effectiveness of preservation by freezing and salting on milkfish (C.chanos) quality. The research implementation time was 15-17 July 2019. Some of the treatments used were milkfish (C.chanos) without salting (control), 20% salting, 30% salting, 40% salting, and just freezing. An organoleptic test with a scoring method was conducted to determine the quality of the fish. Number 1 was the lowest value, while number 9 was the highest. The scoring results were then analyzed descriptively. The observations showed that the freezing method gives the best results, following the 40% salting method, 30%, and 20% salting. The lowest results were obtained in control fish (without treatment).
Kepadatan dan Pola Distribusi Kerang Totok (Geloina erosa) di Perairan Wisata Hutan Payau Cilacap Amanda Retnaning Diyah; Any Kurniawati; Dewi Kresnasari
Scientific Timeline Vol. 2 No. 1 (2022)
Publisher : UNU Purwokerto

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One of unique biota that lives in Cilacap Mangrove Forest Tourism area is mangrove clam Geloina erosa. Many of these clams are fishing targets by the local community. The clams would be either sold to the market or consumed directly. This study aims to determine the density and distribution pattern of G. erosa in Cilacap Mangrove Forest Tourism area waters, and was conducted in May-June 2021. The research method used was direct observation in the field with purposive sampling technique. There are 3 sampling stations, each of which is observed once every week for 3 weeks. The results shows that the density of G. erosa was 301 ind/m2, 15 ind/m2 and 4 ind/m2 at stations 1, 2, and 3 respectively. The distribution pattern of G. erosa at each observation station was a clustered distribution.
STRUKTUR KOMUNITAS ZOOPLANKTON PADA PERAIRAN MANGROVE LAGUNA SEGARA ANAKAN CILACAP Nur Kholifah; Eti Wahyuningsih; Dewi Kresnasari
Scientific Timeline Vol. 2 No. 1 (2022)
Publisher : UNU Purwokerto

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This study aims to determine the diversity of zooplankton and its connection to the quality of the mangrove waters of Segara Anakan Lagoon, Cilacap. This research was conducted from July to September 2021. The data was collected using a survey method with purposive random sampling, where the research stations were selected based on certain criteria and zooplankton samples were collected from 3 observation stations. Sampling was carried out at low tide. Zooplankton was collected using plankton net. The results showed that the types and diversity of zooplankton found in the mangrove waters of Laguna Segara Anakan Cilacap consisted of four phyla which were annelids, arthropods, protozoa, and rotifers. Only one genus found from the phylum annelids, namely polychaeta. There were six arthropods genera consisting of daphnia, microstela, nauplius, euterfina, diaphanossoma, and oithona. The phylum Protozoa consists of one genus, astramoeba, while the phylum rotifera consists of two genera, Branchionus and Notholca. The abundance of zooplankton at Stations 1, 2, and 3 were 1.61 ind/l, 1.84 ind/l, and 1.41 ind/l, respectively. Zooplankton diversity is influenced by aquatic environmental conditions such as air temperature, water temperature, dissolved oxygen, water pH, salinity, and TSS.
Co-Authors Amanda Retnaning Diyah Any Kurniawati Eti Wahyuningsih Nur Kholifah