Judul: Stock Status of Yellowstripe Scad Selaroides leptolepis (Cuvier 1833) in Sunda Strait
Abstrak: Ikan selar kuning merupakan salah satu ikan pelagis yang memiliki nilai ekonomis penting dan merupakan salah satu ikan tangkapan dominan di PPP Labuan, Banten. Penelitian ini dilakukan untuk mengkaji stok ikan selar kuning di perairan Selat Sunda guna menentukan alternatif pengelolaan yang tepat dan berkelanjutan. Penelitian dilakukan pada bulan Mei-Oktober 2014 dengan interval waktu pengambilan contoh lebih kurang 30 hari. Data primer yang dikumpulkan adalah panjang total dan bobot basah. Sedangkan data tingkat kematangan gonad (TKG), jenis kelamin, dan bobot gonad diperoleh melalui pembedahan ikan. Ikan selar kuning yang tertangkap didominasi TKG I dan TKG II. Pola pertumbuhan ikan selar kuning betina dan jantan bersifat isometrik. Ikan selar kuning betina memiliki nilai koefisien pertumbuhan 0,87 per tahun, sedangkan ikan jantan 0,51 per tahun. Laju eksploitasi ikan selar kuning betina telah melebihi 0,5, sehingga diduga telah terjadi tangkap lebih di perairan Selat Sunda.
Keyword: ikan selar kuning, PPP Labuan, Selat Sunda, Mortalitas, Laju eksploitasi, Model produksi surplus, Kondisi ikan selar kuning

Judul: Kajian Stok Sumber Daya Ikan Selar Kuning Selaroides leptolepis (Cuvier 1833) di Perairan Selat Sunda yang didaratkan di PPP Labuan, Banten
Abstrak: Yellowstripe Scad is one of pelagic fishes has the value of economically important fish catches and is dominant in PPP Labuan. Population of yellowstripe scade feared will decline arrest of conducted in continous. The purpose of this study was to assess the condition of yellowstripe scad in Sunda Strait that include of growth, mortality and exploitation rate. The study is done at PPP Labuan on Juny-October 2013. Fish samples observed reach a 752 with length range between 81-168 mm. Yellowstripe scad have allometric negative growth and a size of first maturity 157 mm. Parameter growth allegedly used method Ford Walford showed growth yellowstripe scade female faster than male with growth rate each of 0,42 and 0,36. The exploitation of yellowstripe scad has exceeded the optimum exploitation rate that yellowstripe scad in Sunda Strait has over exploited. Optimum efforts allegedly used Schaefer model showing of 1089 trip/year with maksimum sustainable yield (MSY) of 1977 tonnes/year and total allowable catch 1423 tonnes/year. Management that can be suggested is setting fishing effort and mesh size more than 6 cm.
Keyword: Yellowstripe scad., maksimum sustainable yield (MSY), xploitation, growth

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