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Scripta Biologica
Published by Universitas Jenderal Soedirman
ISSN : -     EISSN : 23553138     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Scripta Biologica is a peer reviewed open access electronic journal published by the Faculty of Biology Jenderal Soedirman University, publishes research papers encompasses all aspects of biology, including; molecular biology, cell biology, and genetics; physiology and reproduction; ecology and conservation; biodiversity, evolution, taxonomy, and biogeography.
Arjuna Subject : -
Articles 13 Documents
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Search results for , issue "Vol 4, No 4 (2017)" : 13 Documents clear
PENGARUH INTENSITAS CAHAYA TERHADAP PERTUMBUHAN DAN KANDUNGAN KAROTENOID Dunaliella sp. PADA MEDIA EKSTRAK DAUN LAMTORO Leucaena leucocephala Doni Putra Pradana; Berta Putri; Siti Hudaidah
Scripta Biologica Vol 4, No 4 (2017)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1028.889 KB) | DOI: 10.20884/1.sb.2017.4.4.626

Abstract

Dunaliella sp. is a green microalga commonly used as a live feed in the hatchery, especially in marine aquaculture. This microalga is capable of producing carotenoids and accumulate a significant amount of β-carotene under stressful conditions, for example, high light intensity during the culture process. The objective of this study was to determine the effect of light intensity on the growth of Dunaliella sp. culture and it carotenoid content. The Dunaliella sp was cultivated for eight days at the Aquaculture Laboratory, Department of Fisheries and Marine Science, Faculty of Agriculture, University of Lampung. The study used a completely randomized design with three different light intensity as treatment, i.e., (A) 2500 lux, (B) 3500 lux, and (C) 4500 lux. All treatments were given three replicates, and the position of culture bottles was randomized with the assumption that all sample units received the equal amount of light intensity. The results showed the Dunaliella sp culture illuminated with light intensity higher than 2500 lux have higher carotenoid content.
INTERTIDAL BARNACLE COMMUNITY OF KETAPANG AND GILIMANUK PORTS THAT SEPARATED BY THE INDONESIAN THROUGHFLOW OF BALI STRAIT Sulistiono Sulistiono; Diah Etika Maharatih Setiarina; Romanus Edy Prabowo
Scripta Biologica Vol 4, No 4 (2017)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1461.897 KB) | DOI: 10.20884/1.sb.2017.4.4.615

Abstract

Indonesian Throughflow (ITF) flows from the Pacific Ocean through the western route of Makassar Strait and exit directly to the Indian Ocean through Lombok Strait and Bali Strait or flows eastward through the Banda Sea. Bali Strait separates the Ketapang Ferry Port of Banyuwangi on the Jawa side and Gilimanuk Ferry Port of Bali. Ferries connect Jawa and Bali through those ports as the primary mean of transportation. Ship hull and ballast water of those ships act as a proxy for barnacle distribution in their larval stage from one harbor to another so that it could influence the barnacle community of those two ports. The environmental condition of each seaport defines the barnacle community based on the adaptation ability of barnacle. The purpose of this research was to determine the intertidal barnacle diversity on both Ketapang and Gilimanuk seaports and to compare the barnacle community between Ketapang and Gilimanuk seaports. This study was a survey, and simple random sampling technique was used to collect samples. Sample collection was conducted from July to August 2017, and the sample observation and identification were performed at the Faculty of Agriculture Laboratory at Banyuwangi PGRI University. The diversity indexes including Shannon, Brillouin, Simpson, and Evenness were calculated to determine the level of diversity, and Bray-Curtis similarity coefficient was used to compare the intertidal barnacle community. The result showed the intertidal barnacle diversity of Ketapang and Gilimanuk seaports were low, at the level of 0.89, 0.89, 0.41 and 0.27 at Ketapang Ferry Port and 0.81, 0.80, 0.43, and 0.28 at Gilimanuk Ferry Port based on Shannon, Brillouin, Simpson, and Evenness accordingly. The two ports were having a medium similarity of intertidal barnacle community indicated by the Bray-Curtis similarity coefficient analysis score of 0.58.
UJI MEDIA PEMELIHARAAN Mesocyclops aspericornis (Daday) DARI BERBAGAI KOTORAN TERNAK UNTUK MENINGKATKAN PRODUKSI COPEPODIT Munawir Sazali; Muhammad Ali Azis Hasan Rizki
Scripta Biologica Vol 4, No 4 (2017)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (817.368 KB) | DOI: 10.20884/1.sb.2017.4.4.645

Abstract

Natural predators of mosquito larvae are known and used as biological control of the mosquito larvae of Aedes aegypti, one of them is a copepod, Mesocyclops aspericornis. The effectiveness of the biological control of Aedes aegypti larvae requires an efficient method to rear Mesocyclops aspericornis copepodite. This research aimed to determine the feasibility of various organic manures, i.e., cow dung (RKS), goat manure (RKK), and marmot manure (RKM) as aquaculture media of M. aspericornis copepodite. This experiment was conducted in the laboratory using a post-test only control group design. The group design consisted of 5 concentrations of 0%, 25%, 50%, 75%, and 100%, each with three replicates for each organic manure media. The statistical analyses showed each organic manure medium was not significantly affecting (p = 0.521) the copepod aquaculture. However, the concentration of the manure has a significant correlation with the number of copepodites raised (p = 0.001). Games-Howell test suggested the most effective manure concentration to rear M. aspericornis copepodite was 25%.

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