[ABSTRAK
Terdapatnya upaya tangkap udang dogol (Metapenaeus ensis, De Haan1844 ) di perairan Cilacap dan sekitarnya yang berlebih maka perlu dilakukanpenelitian yang bertujuan untuk mengkaji dinamika populasi, tingkat pemanfaatandan optimasi pemanfaatan udang dogol di perairan Cilacap dan sekitarnya.Penelitian dilaksanakan di perairan Cilacap dan sekitarnya dari bulan Januari 2013sampai Desember 2014. Metode yang digunakan adalah metode survei denganpengambilan sampel udang dogol yang tertangkap oleh alat tangkap arad dantrammel net. Analisis dinamika populasi menggunakan program FiSAT II danpengkajian potensi lestari dianalisis dengan menggunakan model surplus produksidalam menentukan Maximum Sustainable Yield (MSY). Optimasi pemanfaatandilakukan dengan analisis Linier Programming terhadap aspek-aspek yang terkaitdengan pemanfaatan udang dogol.Udang dogol di perairan ini memiliki pola pertumbuhan allometrik negatif,dengan nilai Lc > Lm yang menunjukkan sebagian besar udang dogol yang tertangkapdi perairan ini sudah memijah. Nilai parameter pertumbuhan yaitu L∞: 55.8 mm, K:1,18 per tahun, to: 0,1129, Z: 7,09 per tahun, M: 0,8 per tahun, F: 6,29 per tahun, danE: 0,88. Nilai E menunjukkan tingkat pemanfaatan sudah melebihi batas ekploitasidan sudah terjadi overfishing. Pendugaan MSY dan f-Opt sebesar 57 ton/tahun dan392 unit alat tangkap standar trammel net. Skenario optimasi pemanfaatan udangdogol di perairan Cilacap dan sekitarnya yang paling menguntungkan dan lestariadalah dengan mengoperasikan 392 unit jaring trammel net dengan keuntungan Rp.35,2 milyar per tahun.

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ABSTRACT
There were an excessive fishing effort of greasyback shrimp (MetapenaeusEnsis, De Haan 1844) in Cilacap Waters, so it is necessary to study the populationdynamics, the level of utilization and optimization of greasyback shrimp in Cilacapwaters. Research was conducted in Cilacap and surrounding waters from January2013 to December 2014. The method used was survey method using samples ofGreasyback Shrimp that were caught by fishing gear Arad and trammel net. Analysisof population dynamics used FiSAT II program. Assessment of the maximumsustainable yield was analyzed using surplus production models in order to determinethe Maximum Sustainable Yield (MSY). The optimization of the utilization of LinearProgramming was done using analysis of aspects related to the use of greasybackshrimp.Greasyback Shrimp growth in the Cilacap waters moreover negativeallometric, with a value of Lc> Lm which show that most of Greasyback Shrimpcaught with fishing gear used in waters Cilacap already in spawning condition. Valueof growth parameters L∞: 55.8 mm, K: 1.18 per year, to: 0.1129, Z: 7.09 per year,M: 0.8 per year, F: 6.29 per year, and E: 0.88. The value of E indicate that theutilization rate has exceeded the limits of exploitation (overfishing). Base on surplusproduction models analysis estimation of MSY was 57 tons / year while f-Opt forand 392 units using standard trammel net fishing gear. Optimization scenarios ofGreasyback Shrimp in the Cilacap waters was the use of the most profitable andsustainable ways to operate 392 units trammel nets with a net profit of Rp. 35.2billion per year, There were an excessive fishing effort of greasyback shrimp (MetapenaeusEnsis, De Haan 1844) in Cilacap Waters, so it is necessary to study the populationdynamics, the level of utilization and optimization of greasyback shrimp in Cilacapwaters. Research was conducted in Cilacap and surrounding waters from January2013 to December 2014. The method used was survey method using samples ofGreasyback Shrimp that were caught by fishing gear Arad and trammel net. Analysisof population dynamics used FiSAT II program. Assessment of the maximumsustainable yield was analyzed using surplus production models in order to determinethe Maximum Sustainable Yield (MSY). The optimization of the utilization of LinearProgramming was done using analysis of aspects related to the use of greasybackshrimp.Greasyback Shrimp growth in the Cilacap waters moreover negativeallometric, with a value of Lc> Lm which show that most of Greasyback Shrimpcaught with fishing gear used in waters Cilacap already in spawning condition. Valueof growth parameters L∞: 55.8 mm, K: 1.18 per year, to: 0.1129, Z: 7.09 per year,M: 0.8 per year, F: 6.29 per year, and E: 0.88. The value of E indicate that theutilization rate has exceeded the limits of exploitation (overfishing). Base on surplusproduction models analysis estimation of MSY was 57 tons / year while f-Opt forand 392 units using standard trammel net fishing gear. Optimization scenarios ofGreasyback Shrimp in the Cilacap waters was the use of the most profitable andsustainable ways to operate 392 units trammel nets with a net profit of Rp. 35.2billion per year]