Judul: Kebutuhan pakan benih ikan sidat ( Anguilla sp. ) pada pemeliharaan di Laboratorium
Abstrak: Eel (Anguilla sp) which is known to have a fairly high content of EPA & DHA, along with has a high economic value was found widely in Indonesian waters. This research aims to determine the level of maintenance, optimal and maximal feeding in the rearing of seed eel. This research was conducted in the Laboratory Physiology of Aquatik Animal, FPIK IPB during 42 day. The research using aquarium 60 x 40 x 30 cm, with a volume of 54 liters of water, the weight seed 1-3 grams / fish and feel 10 fish / aquarium. The research implemented 4 treatments of feeding levels and 3 replications feeding levels consisted of 0%, 7%, 14% and 21% of the biomass. The results show that to produce zero growth (maintenance), optimum and maximum growth, requires a feed level respectively : 3.9%, 7.6% and 10%. SR of each treatment was 90%, the highest feed efficiency, resulting in 7% of feeding level treatment.
Keyword: EP., LPBRH, growth of juvenil eel, Maintenance

Judul: Optimasi salinitas pada pemeliharan benih ikan sidat (Anguilla sp)
Abstrak: Eel consumption increased every year and the need to be fulfilled from catches in nature and cultivation. The availability of seed in nature is decreasing and survival rate of seeds cultivated was low. The solution is to improve the cultivation environment of seeds, so survival rate of eel seed is high to prevent over exploitation and to keep sustainability of eel in nature. The aim of the research is to get optimum salinity on eel seed rearing with size at ±1 gram. The research was conducted at Laboratory of Aquatic Animal Physiology, Aquatic Living Resource Management, Faculty of Fisheries and Marine Science, Bogor Agricultural University in July for 21 days. The research employs random completely design which made up by 4 treatments which are salinity of 0, 1, 2, and 3 ppt with 3 replications. Each aquarium filled with 5 eels. The measured parameters were osmotic gradient, oxygen consumption, proximate analysis, weight loss and survival rate. Body weight loss and survival rate data were analyzed by Analysis of Variance (ANOVA). The result of ANOVA indicated that salinity treatment were significantly (P<0.05) influenced the body weight loss. The optimum salinity for rearing eel seed with size ±1 gram is 1 ppt.
Keyword: eel seed (Anguilla sp), salinity, aquaculture

Judul: Penggunaan Teorema Homeomorphy 2-Manifold dan Teorema Euler Poincare pada Torus 𝑇�� dan Simplicial Complex 𝐾��
Abstrak: Two dimensional topological spaces are said to be homeomorphic if they have the same topological invariant, where one of topological invariant used is an Euler characteristic. Homeomorphy 2-Manifold’s Theorem and Euler Poincare’s Theorem are used to distinguish two topological spaces. Homeomorphy 2-Manifold’s Theorem uses Euler characteristic to identify two dimensional topological spaces. Euler Poincare’s Theorem is an alternative way to find Euler characteristic with Betti number, which is topological invariant as well. The objective of this paper is to investigate the homeomorphism of torus 𝑇����� and simplicial complex 𝐾�����. Topological space torus and simplicial complex 𝐾����� have the same Euler characteristic, which is two. Based on Homeomorphy 2-Manifold’s Theorem topological space torus 𝑇����� and simplicial complex 𝐾����� is homeomorphic.
Keyword: simplicial, torus, Euler, homeomorphism, topology