Judul: Kajian Stok Ikan Tembang (Sardinella fimbriata) di Perairan Selat Sunda yang Didaratkan di Pelabuhan Perikanan Pantai Labuan, Banten
Abstrak: Fringescale sardinella (Sardinella fimbriata) is one of the economically important fish resources found in the Sunda Strait waters. High economic value with the increasing demand of fish makes it as one of the main targets of capture. This research was conducted to determine the actual condition of the fringescale sardinella stock based on landed at Coastal Fishing Port of Labuan, Banten. The amount of the observed fish was 636 individuals with male sex ratio of 1:1.2 to the female. The fringescale sardinella had negative allometrik growth and female and male asymptotic length ( ) were 207.32 mm and 175.11 mm, respectively. Spawning season seems to be occurred in August and September. The mean size of female and male reach sexual maturity was 163 mm and 153 mm, respectively. Exploitation rate of the fringescale sardinella more than 50%, meaning that this fish has an over fishing and it seem has a growth overfishing due to caught fishes are still young more than 70%.
Keyword: Sunda Strait, growth, exploitation rate, stock assesement, fringescale sardinella

Judul: Aspek Reproduksi Ikan Tembang (Sardinella fimbriata Cuvier dan Valenciennes 1847) di Perairan Teluk Banten.
Abstrak: Fringescale sardinella (Sardinella fimbriata) has an important economic value and high levels of utilization. Indicated the availability of S. fimbriata decline in reproduction studies Karangantu so necessary for further management. The research was conducted in May-August 2012. Based on this research, it is known reproductive pattern S. fimbriata from Banten Bay. Total number of fish taken during the study were 765 individuals. Results showed that the sex ratio of male and female Fringescale sardinella unbalanced (0,7:1) with Chi-square test. Condition factor S. fimbriata ranged from 0,9248 to 5,8707. Fringescale sardinella female mature more rapidly than male fish gonads with mature gonads were first size of 179,4 mm (female) and 192,4 mm (male). Peak spawning season of Fringescale sardinella in Banten Bay waters allegedly occurred in May and late August. Reproductive potential of S. fimbriata high at 9 691-173 335 eggs. Egg diameter of S. fimbriata ranged from 0,0250 to 0,6250 mm with the spread mode from two types of spawning peaks with partial (partial spawner).
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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