scholarly journals Pola Rekrutmen, Mortalitas, dan Laju Eksploitasi Ikan Lemuru (Amblygaster sirm, Walbaum 1792) di Perairan Selat Sunda

Biospecies ◽  
2017 ◽  
Vol 10 (1) ◽  
Author(s):  
Nidya KARTINI ◽  
Mennofatria BOER ◽  
Ridwan AFFANDI
Keyword(s):  
Total Mortality ◽  
Pelagic Fish ◽  
High Potential ◽  
Biological Information ◽  
Natural Mortality ◽  
Market Demand ◽  
Fishing Mortality ◽  
Fish Resources ◽  
Fish Samples ◽  
Exploitation Rate

Sunda Strait has high potential of pelagic fish resources, one of which is spotted sardinella (Amblygaster sirm). High market demand of spotted sardinella leads to its high exploitation. Management of sustainable used of this species need various biological information of the target species.The aims of this research wereto analyze of therecruitment pattern, mortality, and exploitation rate of spotted sardinella. Sampling was conducted in April to August 2015 from the catchment landed at Labuan Coastal Fishing Port, Banten. Fish samples taken during the study consisted of  527 males and 245 females. The results showed thatpeak recruitment season for spotted sardinella occurs in Maret (11.64%) and July (13.67%).The natural mortality (M), fishing mortality (F), total mortality (Z) for male were 0,33; 5,30; 5,63 year-1 respectively, and for female were 0,51; 7,75;8,27 year-1 respectively. Exploitation rate (E) for male was 0,94 year-1 and for female was 0,93 year-1.Keywords : exploitation, growth, mortality, spotted sardinella, Sunda Strait

scholarly journals Biological Parameters of False Scad (Decapterus Rhonchus) Encountered in the Coastal Waters of Elmina, Ghana

2020 ◽  
Vol 7 (3) ◽  
pp. 507-515
Author(s):  
Stella Forson ◽  
Samuel KK Amponsah
Keyword(s):  
Mortality Rate ◽  
Coastal Waters ◽  
Total Mortality ◽  
R Package ◽  
Natural Mortality ◽  
Fishing Mortality ◽  
Management Measures ◽  
Fish Samples ◽  
Exploitation Rate ◽  
Landing Beach

The study evaluated some population parameters of Decapterus rhonchus in coastal waters of Elmina, Ghana. A total of 210 samples were collected from Elmina landing beach in the Central region of Ghana from July 2019 to December 2019. The total length of individual fish samples was measured and analyzed using TropFish R package. Von Bertalanffy parameters were estimated as asymptotic length (L∞) = 40.6 cm, growth rate (K) = 0.14 per year, and growth performance index (Φ′) =2.367 per year. The length at first capture and maturity were 28.2 cm and 23.2 cm, respectively. Mortality parameters were calculated as total mortality rate (Z) = 1.09 per year, natural mortality rate (M) = 0.29 per year and fishing mortality rate (F) = 0.80 per year. The exploitation rate (E) was 0.73 which suggests that Decapterus rhonchus fishery in coast of Elmina, Ghana is highly overexploited. Reduction of fishing efforts through the removal of subsidies and the introduction of closed fishing season are some of the recommended management measures to sustain the Decapterus rhonchus fishery in Ghana. Res. Agric., Livest. Fish.7(3): 507-515,  December 2020

scholarly journals KARAKTERISTIK POPULASI UDANG JERBUNG (Penaeus merguiensis de Man, 1888) DI PERAIRAN CILACAP DAN SEKITARNYA

2017 ◽  
Vol 23 (1) ◽  
pp. 11
Author(s):  
Ali Suman ◽  
Budi Iskandar Prisantoso
Keyword(s):  
Mortality Rate ◽  
Carapace Length ◽  
Total Mortality ◽  
Survey Method ◽  
Natural Mortality ◽  
Market Demand ◽  
Fishing Mortality ◽  
Population Characteristic ◽  
Exploitation Rate ◽  
De Man

Tingginya permintaan pasar terhadap udang jerbung mengakibatkan aktivitas penangkapannya berlangsung secara terus-menerus sepanjang tahun sehingga mengancam kelestariannya. Penelitian karakteristik populasi merupakan salah satu dasar utama dalam merumuskan pengelolaan menuju pemanfaatannya secara lestari. Tujuan penelitian ini adalah untuk mengetahui karakteristik populasi udang jerbung di perairan Cilacap dan sekitarnya. Penelitian dilakukan dari bulan Januari sampai dengan Nopember 2013 dengan metode survey. Hasil penelitian menunjukkan bahwa rata-rata ukuran panjang pertama kali matang kelamin (Lm) udang jerbung di perairan Cilacap dan sekitarnya adalah pada panjang karapas 38,3 mm dan musim pemijahan berlangsung sepanjang tahun dengan puncaknya pada bulan Januari. Laju pertumbuhan udang jerbung jantan adalah 1,00 per tahun dan panjang karapas maksimum (L ) adalah 40,7 mm serta untuk udang betina didapatkan nilai K adalah 1,10 per tahun dan nilai Loo adalah 54,2 mm. Laju kematian total (Z) udang jerbung jantan adalah 2,46 per tahun, laju kematian karena penangkapan (F) dan laju kematian alami (M) masing-masing 1,37 per tahun dan 1,09 per tahun. Untuk udang betina didapatkan nilai Z adalah 1,69 per tahun, nilai F dan nilai M masing-masing 0,61 dan 1,08 per tahun. Laju pengusahaan (E) udang jerbung jantan adalah 0,56 per tahun dan nilai E udang betina adalah 0,36 per tahun. Pola penambahan baru udang jerbung di perairan Cilacap berlansung sepanjang tahun dengan puncaknya pada bulan Maret dan April. Tingkat pemanfaatan udang jerbung jantan sudah berada dalam tahapan overfishing dan perlu dilakukan pengurangan jumlah upaya.High market demand of banana prawn have consequence in fishingactivities which is carried out continuously throughout the year, so that could be threaten of resources sustainability. Scientific advices on the population characteristic are required as an input to support fisheries management. The purpose of the study was to identify population characteristic of the banana prawn with survey method. Study on the population characteristic of banana prawn (P. merguiensis de Man) was conducted in Cilacap and the surrounding waters based on data collected during, January 2013 to November 2013. Result showed that the size at first maturity (Lm) of banana prawn was 38.3 mm in carapace length. The spawning season of banana prawn in Cilacap and the surrounding waters occures throughout the year with the peak in January. The growth parameters of male (K) was 1.0/year with maximum carapace length (L ) of 40.7 mm and K for female was 1.10/year with maximum carapace length of 54,2 mm. Instantaneous total mortality rate (Z) and natural mortality rate (M) of male were 2.46/year and 1.09/year, respectively. While fishing mortality (F) and exploitation rate (E) respectively were 1.37/year and 0.56/year. The total mortality (Z) and natural mortality (M) of female  respectively were 1.69/year and 1.08/year. Fishing mortality (F) and exploitation rate (E) were 0.61/ year and 0.36/year. The recruitment pattern of banana prawn in Cilacap and surrounding waters occures throughout the year with two peaks in March and April. The exploitation rate of male of banana prawn fisheries in Cilacap waters was high. It was, therefore, recommended that fishing effort of the banana prawn in that waters should be reduced in the next year.

scholarly journals POPULATION DYNAMICS OF MALAYAN LEAF FISH (Pristolepisgrooti Blkr.) IN RANAU LAKE, SOUTH SUMATRA

2018 ◽  
Vol 24 (2) ◽  
pp. 125
Author(s):  
Sevi Sawetri ◽  
Subagdja Subagdja ◽  
Dina Muthmainnah
Keyword(s):  
Mortality Rate ◽  
Growth Parameters ◽  
Total Mortality ◽  
Natural Mortality ◽  
Fishing Mortality ◽  
Frequency Data ◽  
Length Frequency ◽  
Lake Ecosystems ◽  
Exploitation Rate ◽  
Length Frequency Data

The Malayan leaf fish or locally named as kepor (Pristolepis grooti) is one of important biotic components in Ranau Lake ecosystems. This study aimed to estimate population dynamic and exploitation rate of kepor in Ranau Lake, South Sumatera. The population parameters are estimated based on length frequency data which were collected in March to October 2013. Growth parameters and fishing mortality rates were calculated using FiSAT software package. The results showed that kepor’s growth was negative allometric, which tended to gain length faster than weight. Kepor population was dominated (42%) by individual length of 10.0 to 11.0 cm. Predicted length infinity (L) was 17.28 cm with high value of growth rates (K) of 1.4 year-1. The natural mortality rate (M) is 2.57 year-1, the fishing mortality rate (F) is 5.36 year-1 and total mortality rate (Z) is 7.93 year-1. The exploitation rate of Malayan leaf fish in Ranau Lake (E = 0.68 year-1) has passed the optimum score.  

scholarly journals PARAMETER POPULASI DAN BIOLOGI REPRODUKSI IKAN BENTONG (Selar crumenophthalmus) DI PERAIRAN KWANDANG,GORONTALO UTARA

2015 ◽  
Vol 6 (2) ◽  
pp. 111 ◽  
Author(s):  
Ria Faizah ◽  
Lilis Sadiyah ◽  
Tuti Hariati
Keyword(s):  
Total Mortality ◽  
Maturity Stage ◽  
Natural Mortality ◽  
Fishing Mortality ◽  
Frequency Data ◽  
Population Parameters ◽  
Length Frequency ◽  
Exploitation Rate ◽  
Length Frequency Data ◽  
Pelagic Fisheries

Perairan Kwandang merupakan salah satu basis utama perikanan pelagis kecil di perairan laut Sulawesi. Salah satu jenis yang banyak dimanfaatkan adalah ikan bentong (Selar crumenophthalmus). Penelitian ini bertujuan untukmenduga parameter populasi, tingkat pemanfaatan (E), dan biologi reproduksi dari ikan bentong. Data panjang cagak dikumpulkan dari PP Kwandang dari bulan Januari hingga November 2012. Pendugaan parameter populasi dilakukan dengan menggunakan metode Bhattacharya dengan bantuan software FISAT II Hasil analisis menunjukkan bahwa laju pertumbuhan (K) sebesar 0,76 per tahun dengan L”=24,7 cm. Laju kematian total (Z) sebesar 2,63 per tahun, dengan laju kematian alamiah (M) sebesar 1,28 per tahun, laju kematian akibat penangkapan (F) sebesar 1,3 per tahun dan laju pemanfaatan 0,51. Tingkat pemanfaatan ikan bentong sudah relatif optimum. Rasio jenis kelamin ikan bentong jantan dan betina adalah 1: 1,02. TKGI paling banyak ditemukan. Musim pemijahan ikan bentong diduga terjadi pada bulan November dan Desember.The Kwandang waters is one of the main base for small pelagic fisheries in Sulawesi sea. Bigeye scad (Selar crumenophthalmus) is one of species from small pelagic is exploited. The objectives of the research was to estimate the population parameters, exploitation rate and reproductive biology of bigeye scad. Length frequency data were collected from PP Kwandang, from January November 2012. Estimation of population parameters of bigeye scad used FISAT II method. The results showed that growth rate as follows (K) = 0,76 year-1 , L”=24,7 cm. Total mortality rate (Z) = 2,63 year-1, with natural mortality (M) = 1, year-1 and fishing mortality (F) = 1,3 year-1 and exploitation rate (E)=0,51. The exploitation rate are already optimum. Sex ratio of male and female are 1:1,02. The most commonly founded is Gonado Maturity Stage of I. The spawning season of bigeye scad estimated was November and December

scholarly journals ANALISIS PERTUMBUHAN DAN LAJU EKSPLOITASI IKAN TONGKOL ABU-ABU, Thunnus tonggol (Bleeker, 1851) DI PERAIRAN LAUT JAWA

2018 ◽  
Vol 10 (2) ◽  
pp. 95 ◽  
Author(s):  
Yoke Hany Restiangsih ◽  
Thomas Hidayat
Keyword(s):  
Total Mortality ◽  
Natural Mortality ◽  
Fishing Mortality ◽  
Research Activity ◽  
Gill Net ◽  
Exploitation Rate ◽  
Java Sea ◽  
Harvest Strategy ◽  
Weight Data ◽  
Longtail Tuna

Tongkol abu-abu atau longtail tuna (Thunnus tonggol) salah satu jenis ikan tuna neritik sebagai target penangkapan armada pukat cincin, jaring isang, dan pancing di Laut Jawa. Penelitian ini bertujuan untuk mengetahui parameter pertumbuhan, umur dan mortalitas ikan tongkol abu-abu untuk penyusunan strategi pengelolaannya. Pengumpulan data frekuensi panjang dan bobot ikan dilakukan di Pelabuhan Perikanan Nusantara (PPN) Pekalongan pada Januari – Nopember 2014. Hasil penelitian menunjukkan hubungan panjang-bobot ikan tongkol abu-abu bersifat isometrik dan indek kecepatan pertumbuhan 3,46/tahun. Ikan dapat tumbuh hingga mencapai panjang asimtotik (L) = 85 cm dengan laju pertumbuhan (K) sebesar 0,4/tahun. Umur teoritis pada saat panjang ikan sama dengan nol (t0) adalah 0,046 tahun. Umur maksimal diduga 15 tahun. Mortalitas alami (M) sebesar 0,61/tahun, mortalitas karena penangkapan (F) 1,01/tahun, mortalitas total (Z) 1,62/tahun. Tingkat eksploitasi (E) sebesar 0,59 berarti bahwa pemanfaatan ikan tongkol abu-abu di Laut Jawa cenderung sudah penuh (fully exploited).Longtail tuna as one of neritic tuna species are commonly caught by purse seine, gill net and hand line in java sea.. This research activity aims to determine population parameters i.e. growth, mortality and its exploitation rate that can contribute to strengthen database on preparation its harvest strategy. The Collecting of length and weight data were conducted at Pekalongan fishing port during period of January to November 2014. The Long-weigth relationship was isometric and growth performance index was 3.46/year. The asymptotic length rate (L) was 85 cmFL, growth rate (K) was 0.4/year and zero age (t0) was 0.046 year. This length is reached allegedly at the 15 years age. Natural mortality (M) was 0.6/year, fishing mortality (F) was 1.01/year, total mortality (Z) was 1.62/yera. The exploitation rate (E) was 0.59, it means exploitation of longtail tuna in the Java Sea tend to highly exploited.

scholarly journals BEBERAPA PARAMETER POPULASI UDANG PUTIH (Penaeus merguiensis de Mann) DI PERAIRAN TARAKAN, KALIMANTAN UTARA

2017 ◽  
Vol 9 (2) ◽  
pp. 85
Author(s):  
Umi Chodrijah ◽  
Ali Suman
Keyword(s):  
Mortality Rate ◽  
Total Mortality ◽  
Fishing Effort ◽  
Natural Mortality ◽  
Fishing Mortality ◽  
Population Parameters ◽  
Spawning Period ◽  
Exploitation Rate ◽  
First Maturity ◽  
Penaeus Merguiensis

Tingkat eksploitasi udang putih (Penaeus merguiensis) sangat intensif. Hal ini terindikasi dengan hasil tangkapan udang di WPP-NRI 716 selama 9 tahun terakhir meningkat. Tujuan penelitian ini untuk mengkaji beberapa parameter populasi dan aspek biologi udang putih di perairan Tarakan. Data panjang karapas dan tingkat kematangan gonad udang putih dikumpulkan dari tempat pendaratan udang di Selumit Pantai, Tarakan, Kalimantan Utara pada Januari sampai dengan November 2016. Pendugaan parameter populasi dengan aplikasi model analisis menggunakan program ELEFAN 1. Hasil penelitian menunjukkan rata-rata ukuran udang putih pertama kali tertangkap (Lc) pada panjang karapas 32,51 mm dan rata-rata ukuran pertama kali matang gonad 33,58 mm. Puncak musim pemijahan terjadi pada Maret dan Agustus. Laju pertumbuhan (K) sebesar 1,33 per tahun (betina) dan 1,55 per tahun (jantan). Laju kematian total (Z) sebesar 7,5 per tahun (betina) dan 8,85 per tahun (jantan), laju kematian alamiah (M) sebesar 1,82 per tahun (betina) dan 2,16 per tahun (jantan) serta laju kematian akibat penangkapan (F) sebesar 5,68 per tahun (betina) dan 6,69 per tahun (jantan). Laju pengusahaan (E) udang putih di perairan Tarakan adalah sebesar 0,76 per tahun. Hal ini menunjukkan tingkat pemanfaatan udang putih telah mengalami lebih tangkap (overfishing). Kondisi ini menggambarkan perlunya dilakukan pengurangan upaya sekitar 52 %.  The banana prawn (Penaeus merguiensis) have been exploited intensively. For instance, within nine years the number of shrimp production in FMA 716 increased dramatically. This research aims to identify the some population parameters of banana prawn in the Tarakan waters. This research was carried out from January to November 2016. Data were analyzed using the analytical model application with ELEFAN I. The result showed that the length at first capture (Lc) of banana prawn was 32,51 mmCL and the length at first maturity (Lm) was 33,58 mm CL. The peak season of spawning period was indicated on March and August. The growth rate (K) was 1,33 /year (female) and 1.55/year (male). Total mortality rate (Z) was 7.5/year (female) and 8,85/year (male), natural mortality rate (M) rate was 1.82/year (female) and 2.16/year (male) and fishing mortality rate ( F) were 5.68/ year (female) and 6.69/year (male). The exploitation rate (E) of banana prawn in the Tarakan waters was 0.76 per year. Therefore, level of existing fishing effort of the banana prawn should reduced about 52 % in the next year.

scholarly journals Age, growth, mortality, and exploitation rate of blueline snapper, Lutjanus coeruleolineatus (Actinopterygii: Perciformes: Lutjanidae), from Dhofar Governorate, Sultanate of Oman

2021 ◽  
Vol 51 (2) ◽  
pp. 159-166
Author(s):  
Dawood Almamari ◽  
Said Rabia ◽  
Joo Myun Park ◽  
Laith A. Jawad
Keyword(s):  
Fishery Management ◽  
Growth Parameters ◽  
Total Mortality ◽  
Natural Mortality ◽  
Von Bertalanffy ◽  
Fishing Mortality ◽  
Sultanate Of Oman ◽  
Commercial Fish ◽  
Exploitation Rate ◽  
Reported Study

The blueline snapper, Lutjanus coeruleolineatus (Rüppell, 1838), is a significant commercial fish species harvested from the traditional fishery in the Sultanate of Oman. Deficient data on this species, however, make the management strategies challenging, especially in fisheries ecology. A total of 978 specimens were obtained from Dhofar Governorate off the coast of the Arabian Sea during the period between February 2015 and March 2016. In total, 296 sectioned otoliths were analyzed and growth was estimated from non-seasonal growth by using von Bertalanffy method. The parameters of von Bertalanffy growth function, total mortality (Z), natural mortality (M), fishing mortality (F), and exploitation rate (E) were determined and compared with those for Lutjanidae fishes elsewhere. The age structure of male fishes was between 1 and 14 years for males while the age of females ranged from 1 to 18 years. Growth rate (K) was 0.21 y–1 and 0.16 y–1 for males and females, respectively. The hypothetical length of female (L∞ = 46 cm) was relatively higher than that of male (L∞ = 42 cm). The natural mortality (M) was 0.296, total mortality (Z) was 0.372, fishing mortality was 0.076, and exploitation rate (E) was estimated as 0.2. The presently reported study is conducted to examine this fish in relation to growth parameters by analyzing otolith structure. The results of the presently reported study will contribute towards planning the regional fishery management policies in Oman.

scholarly journals Growth, mortality and stock assessment of greenback mullet, Planiliza subviridis from northwest Arabian Gulf, Iraq

2021 ◽  
Vol 6 (2) ◽  
pp. 142-148
Author(s):  
Abdul-Razak M. Mohamed ◽  
Ali H. Al-Hassani
Keyword(s):  
Mortality Rate ◽  
Stock Assessment ◽  
Population Analysis ◽  
Arabian Gulf ◽  
Total Mortality ◽  
Reference Points ◽  
Fishing Mortality ◽  
Fish Samples ◽  
Exploitation Rate ◽  
First Maturity

The growth, mortality and stock parameters of greenback mullet, Planiliza subviridis from Iraqi marine waters, northwest Arabian Gulf was assessed using FiSAT II software for length-frequency data collected from February 2020 to January 2021. P. subviridis is one of the species caught in large quantities as commercial by artisanal fishers. Fish samples were collected by the Shaheen steel-hulled dhow and from the artisanal fishermen. The total length and body weight relationship of fish was estimated as W= 0.034L2.670, indicating negative allometric growth. Of 3350 specimens, growth and mortality parameters were evaluated. The asymptotic length (L∞), growth rate (K) and growth performance index (Ø') were 33.8 cm, 0.30 and 2.535, respectively. The total mortality rate (Z), natural mortality rate (M), and fishing mortality rate (F) were 1.11, 0.74 and 0.38, respectively. The present exploitation rate (Epresent) of P. subviridis computed as 0.34. Length at first capture (L50) was 17.47 cm. Recruitment of P. subviridis was observed throughout the year, with a peak during July. The yield per recruit analysis indicates that the current exploitation rate was below the biological target reference points (E0.1 and Emax), which refers to the stock of P. subviridis is underexploited. Virtual population analysis results showed that mid-lengths (16-22 cm) experienced the highest fishing mortality. The length at first capture (L50) was higher than the length at first maturity (Lm) of the species. So, for management purposes, more yields could be obtained by increasing the fishing activities on this species for a substantial harvest.

scholarly journals Ecology and population dynamics of silver catfish, Chrysichthys nigrodigitatus (Siluriformes: Claroteidae), of the Cross River, Nigeria

2020 ◽  
Vol 19 (1) ◽  
pp. 71-82
Author(s):  
Daniel Ama-Abasi ◽  
Edak Aniedi Uyoh
Keyword(s):  
Total Mortality ◽  
Single Species ◽  
Fishing Effort ◽  
Catch Rate ◽  
Natural Mortality ◽  
Fishing Mortality ◽  
Length Frequency ◽  
Cross River ◽  
Exploitation Rate ◽  
The Cross

Chrysichthys nigrodigitatus forms the most commercially important freshwater single species fishery in the Cross River, Nigeria. Studies were  conducted on the dynamics of the exploited population of the species and the influence of rainfall on its catch rate. The objectives were to assess the level of exploitation and impacts of rainfall on its catch rate. A time series of length frequency and meteorological parameters was conducted. Length frequency data were analyzed using FiSAT software to estimate population parameters. The asymptotic length, Lı was 105 cm, growth constant (K) was 0.68 year-1, total mortality (Z) was 2.48 year-1, Natural mortality (M) was 0.99 year-1 and fishing mortality (F) was 1.49 year-1. The exploitation rate was 0.60 year-1, indicating overfishing. Natural mortality accounted 40% of the total mortality, presenting a worrisome trend in the fishery. There was a correlation between rainfall and catch rate, which increased at the onset of rains but decreased at the peak of the rains due to increased depth of the river. For management purposes, it is recommended that the fishing effort should be reduced by the regulation of the number of boat-days; for conservation, domestication of the species should be adopted as an adaptation to climatic influence. Keywords: Freshwater Catfish, Fishing Mortality, Exploitation Rate, Overfishing, Rainfall Impact, Niger Delta.

scholarly journals PARAMETER POPULASI UDANG DOGOL (Metapenaeus ensis) DAN UDANG WINDU (Penaeus monodon) DI LAUT ARAFURA

2017 ◽  
Vol 9 (1) ◽  
pp. 57
Author(s):  
Ali Suman ◽  
Budi Iskandar Prisantoso ◽  
Duranta D. Kembaren
Keyword(s):  
Population Dynamic ◽  
Carapace Length ◽  
Total Mortality ◽  
Growth Parameter ◽  
Assessment Tools ◽  
Natural Mortality ◽  
Fishing Mortality ◽  
Exploitation Rate ◽  
Tiger Prawn ◽  
Arafura Sea

Sumber daya udang di perairan Arafura merupakan salah satu modal menuju kemakmuran bagi bangsa, apabila dikelola secara berkelanjutan. Kajian dinamika populasi udang, merupakan salah satu dasar utama dalam merumuskan pengelolaan tersebut menuju pemanfaatan sumber daya yang lestari. Tujuan penelitian ini adalah untuk mengetahui dinamika populasi udang dogol dan udang windu di perairan Arafura dan sekitarnya. Penelitian dilakukan dari bulan Januari 2013 sampai dengan Nopember 2013 dan analisis dilakukan dengan menggunakan FAO-ICLARM Fisheris Stok Assessment Tools (FISAT). Hasil penelitian menunjukkan bahwa laju pertumbuhan (K) udang dogol sebagai 1,33 per tahun dan panjang karapas maksimum (L) sebagai 52,0 mm. Untuk udang windu didapatkan nilai K sebagai 1,45 per tahun dan nilai L sebagai 62,5 mm. Laju kematian total (Z) udang dogol sebagai 4,79 per tahun, laju kematian karena penangkapan (F) dan laju kematian alami (M) masing-masing 2,91 per tahun dan 1,88 per tahun. Untuk udang windu didapatkan nilai Z sebagai 6,13 per tahun, nilai F dan nilai M masing-masing 4,24 dan 1,89 per tahun. Laju pengusahaan (E) udang dogol 0,61 per tahun dan nilai E udang windu sebagai 0,69 per tahun. Tingkat pemanfaatan sudah berada dalam tahapan overfishing dan perlu dilakukan pengurangan jumlah upaya 22% untuk udang dogol dan 38% untuk udang windu.Shrimp resources within Arafura Sea if under sustainably management it would contribute a significant role as a source of nation welfare. Scientific advice on population dynamic are required as an input to support an apropriate fisheries management. The purpose of the study was to identify population parameters of the endeavour shrimp and tiger shrimp in Arafura Sea. Study on the population dynamic of endeavour shrimp and king tiger prawn were conducted in Arafura Sea based on data collected during period of survey, January 2013 to November 2013. The analysis is using the FAO-ICLAM Fisheries Stock Assessment Tools (FiSAT). Result showed that the growth parameter of endeavour shrimp was 1.33/year with maximum carapace length (L) of 52.0 mm. Instantenous total mortality (Z) and natural mortality (M) were 4.79/year and 1.88/year, respectively. While fishing mortality (F) and exploitation rate (E) of endeavour shrimp respectively were 2.91/year and 0.61/year. The growth parameter of king tiger prawn was 1.45/year with maximum carapace length (L) of 62.5 mm. Instantenous total mortality (Z) and natural mortality (M) were 6.13/year and 1.89/year, respectively. While fishing mortality (F) and exploitation rate (E) of king tiger prawn respectively were 4.24/year and 0.69/year. The exploitation rate of endeavour shrimp and king tiger prawn in Arafura Sea was overfishing. It was, therefore, recommended that fishing effort of 22% the endeavour shrimp and 38% king tiger prawn in that waters should be reduced in the next year.

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