PENGARUH PENAMBAHAN FUNEL PADA ALAT TANGKAP BUBU TERHADAP HASIL TANGKAPAN RAJUNGAN (Portugus pelagicus) DI PERAIRAN REMBANG, JAWA TENGAH (The Effect of Funnel Addition on Trap Toward catch of Blue Swimming Crab in Rembang Sea waters)

Bubu (Trap) merupakan alat tangkap yang dioperasikan secara pasif yang termasuk alat tangkap ramah lingkungan, dengan keunggulan hasil tangkapan masih dalam kondisi hidup dan segar. Target penangkapan dari alat tangkap Bubu salah satunya adalah Rajungan (Portunus pelagicus), yang merupakan komoditas ekonomis penting perikanan. Indikasi produktivitas suatu alat tangkap adalah apabila hasil tangkapan didominasi dengan target tangkapan dengan nilai efektivitas yang tinggi. Modifikasi bentuk dan jumlah Funnel (pintu masuk) pada Bubu merupakan salah satu cara memperbesar peluang target masuk kedalamnya. Penelitian mengenai penambahan jumlah funnel bertujuan untuk meningkatkan peluang Rajungan tertangkap. Rancang bangun funnel sebanyak 6 buah (Bubu Payung) akan memperbesar peluang Rajungan sebagai target tangkapan tertangkap dibandingkan bubu dengan jumlah funnel 2 buah. Melalui metode penelitian experimental fishing di perairan Rembang, Jawa Tengah didapatkan hasil bahwa Bubu dengan funnel sebanyak 6 buah (Bubu payung) menghasilkan hasil tangkapan lebih banyak dibandingkan dengan Bubu dengan funnel sebanyak 2 buah. Bubu was a passive fishing gear and kind of responsible fishing gear categories. Catch on fresh condition is one of benefit from this gear. Rajungan (Portunus pelagicus) is one of important fisheries resources and valuable. One of the productivity indicator on fishing gear is if catch dominated by targetted of fish and effectiveness value is high. Trap modification on shape and amount funnel is one of techniques to increase opportunity fish that get caught. The aim of this study is to increase opportuniy caught of Rajungan with different funnel amount. Bubu with six funnel will enlarge opportunity of Rajungan that caught than of two funnel. By experimental fishing in Rembang sea water, Province of Central Java, the result of this study shown that bubu with six funnel get more larged rajungan catch than bubu with two funnel.

Download Full-text

THE INFLUENCE ANALYSIS OF DIFFERRENTLY CONSTRUCTED FOLDED TRAPS AND TYPES OF BAITS TO CATCH CRABS [Portunus pelagicus, (Linnaeus,1758)] IN REMBANG SEA WATERS

Jurnal Teknologi ◽

10.11113/jt.v78.8184 ◽

2016 ◽

Vol 78 (4-2) ◽

Author(s):

Herry Boesono ◽

Sansan Sansan ◽

Agus Suherman

Keyword(s):

Field Experiment ◽

Small Scale ◽

Marine Resources ◽

Homogeneity Test ◽

Fishing Gear ◽

Swimming Crab ◽

Portunus Pelagicus ◽

Anova Test ◽

Central Java ◽

Normality Test

Blue Swimming Crab [Portunus pelagicus (Linnaeus,1758)] is one of the fishery commodities which is prospective to be exported, highly nutritious, commercial, and wholly valuable. In Kabongan lor village, Rembang, Central Java, Indonesia the fishing gear used to catch crabs is folded trap. Kabongan lor village has a small scale of captured marine resources, so it needs to be utilized further. Because of its large potency, a research need to be conducted to improve the haul. Different trap construction and type of baits is one important factor to improve it. This study was aimed to analyze the influence of the dome-folded traps construction and box-folded traps (control), and the influence of fermented mackerel, fresh mackerel, and puffer fish’s head as baits over the crabs in Rembang waters. The method applied is field experiment with six repetitions and two variables in a treatment. The data was analyzed using normality test, homogeneity test, and ANOVA test using SPSS program ver 20.00. The results showed that dome-folded traps gained more crabs compared to box-folded traps (control). Dome-folded traps gained 3 230 g of crabs, while box-folded traps gained 1 620 g. Meanwhile, the use of fresh mackerel as baits gained better crabs than fermented mackerel and puffer fish’s head (control). According to this research known that the captured crabs in which consume; fresh mackerel baits got 1 890 g of crabs, fermented mackerel got 1 500 g and 1 460 g for puffer fish’s head. The results of ANOVA test show the differences of folded traps construction with F sig value as much as 0.022 shows that Ho is accepted; while that with F sig value as much as 0.686 shows that the Ho is denied. Based on these results known that the different folded traps construction does affect to the amount of captured crabs while the differences of baits type do not.

Download Full-text

Pengaruh ekstrak minyak cumi pada umpan bubu terhadap hasil tangkapan kepiting bakau dan rajungan di Perairan Malise Kecamatan Tabukan Tengah

JURNAL ILMU DAN TEKNOLOGI PERIKANAN TANGKAP ◽

10.35800/jitpt.2.3.2016.11449 ◽

2016 ◽

Vol 2 (3) ◽

Author(s):

Maichel Arvan Pananggung ◽

Ivor L. Labaro ◽

Emil Reppie

Keyword(s):

Coastal Waters ◽

Scylla Serrata ◽

Fishing Gear ◽

Swimming Crab ◽

Portunus Pelagicus ◽

Mangrove Crab ◽

Gill Net ◽

Oil Extract ◽

Mangrove Crabs ◽

By Catch

ABSTRACT Mangrove crab (Scylla serrata) and swimming crab (Portunus pelagicus) are economically important marine commodities produced from the coastal waters of Sangihe Islands Regency. But those marine commodity products are usually only caught accidentally with a bottom gill net. There has been a special trap fishing gear for that resources, but not known well by local fishermen. Addition of squid oil extraction baits could increase the fishing power of mangrove crab and swimming crab traps. This research aims to study the effect of squid oil extract on traps bait to catch mangrove crab and swimming crab; and identify the types of biota captured. This research was done in coastal waters of Malise village, Tabukan Tengah District of Sangihe Islands Regency for 2 weeks September 2015; based on experimental method. Six unit traps were operated ten trips where three units of them used scad mackerel bait that injected with squid oil extract, and tree other units just used scad mackerel bait without extract; and the capture data were analyzed using t test. The catch was 142 individuals (135 mangrove crabs and 7 swimming crab); where 86 crabs was caught by scad mackerel bait with squid oil extract, and 56 crabs caught with bait without squid oil extract. The analysis showed that the use of squid oil extracts on trap baits increased the catch. Keywords: mangrove crab, swimming crab,trap baits, squid oil extract, Sangihe ABSTRAK[1] Kepiting bakau (Scylla serrata) dan rajungan (Portunus pelagicus) merupakan komoditi hasil laut ekonomis penting yang dihasilkan dari perairan pantai Kabupaten Kepulauan Sangihe. Tetapi komoditi hasil laut tersebut biasanya hanya tertangkap tanpa sengaja (by catch) dengan jaring insang dasar. Sebenarnya telah ada alat tangkap bubu khusus untuk kepiting bakau dan rajungan, tetapi belum dikenal oleh nelayan lokal. Pemberian ekstrak minyak cumi pada umpan, diduga dapat meningkatkan kemampuan tangkap dari bubu kepiting bakau dan rajungan. Penelitian ini bertujuan untuk mempelajari pengaruh ekstrak minyak cumi pada umpan bubu terhadap hasil tangkapan kepiting bakau dan rajungan, dan mengidentifikasi jenis-jenis biota yang tertangkap. Penelitian ini dilakukan di perairan Malise Kecamatan Tabukan Tengah, Kabupaten Kepulauan Sangihe; selama 2 minggu pada bulan September 2015; yang didasarkan pada metode eksperimental. Enam unit bubu dioperasikan selama sepuluh trip untuk mengumpulkan data; di mana tiga unit menggunakan umpan ikan layang yang disuntikan ekstrak minyak cumi, dan tiga unit lainnya hanya menggunakan umpan ikan laying tanpa ekstrak; dan data dianalisis dengan uji t. Tangkapan total berjumlah 142 ekor (135 ekor kepiting bakau dan 7 ekor rajungan); di mana 86 ekor tertangkap dengan umpan layang yang diberi ekstrak minyak cumi, dan 56 ekor tertangkap dengan umpan tanpa ekstrak. Hasil analisis menunjukkan bahwa penggunaan ekstrak minyak cumi pada umpan bubu, memberikan hasil tangkapan yang sangat berbeda dibandingkan dengan umpan tanpa ekstrak minyak cumi. Kata-kata kunci: kepiting bakau, rajungan, umpan bubu, ekstrak minyak cumi, Sangihe

Download Full-text

Bioeconomic Analysis of Stolephorus sp Fisheries in the Conservation Area of Perairan Karang Jeruk, Tegal Regency, Central Java

Economic and Social of Fisheries and Marine ◽

10.21776/ub.ecsofim.2020.008.01.05 ◽

2020 ◽

Vol 008 (01) ◽

pp. 54-67

Author(s):

Esza Cahya Dewantara ◽

◽

Achmad Fahrudin ◽

Yudi Wahyudin ◽

◽

...

Keyword(s):

Purse Seine ◽

Fishing Gear ◽

Policy Recommendations ◽

Supporting Capacity ◽

Quota System ◽

Conservation Area ◽

Total Allowable Catch ◽

Maximum Production ◽

Fisheries Resources ◽

Central Java

The goal of this study was to determine the utilization level of anchovy resources in Perairan Karang Jeruk after being designated as a fisheries reserve conservation area. The CYP algorithm approach was used as a bioeconomic analysis. This study was conducted in November 2019 – January 2020. The results showed that the intrinsic growth rate of anchovies (r) was 1.803 tons/year, the capture coefficients (q) was 0.000506 tons/trip, and the environment supporting capacity (K) amounting to 1501.67 tons/year, cost (c) of 0.27 million/trip and price (p) of 8.73 million/ton. MSY efforts (EMSY) amounted to 1780.42 with maximum production (hMSY) of 676.80 tons/year. MEY (EMEY) efforts amounted to 1694.14 with maximum production (hMEY) of 675.21 tons/year. The utilization of fisheries resources activities shows more capture, both biologically and economically. Policy recommendations that can be applied from the results of the study are that business/effort limitations need to be made to 2416 – 2539 trip/year for payang fishing gear and 1489 – 1565 for Mini Purse Seine fishing gear. The implementation of the quota system on the Total Allowable Catch (TAC) basis for payang fishing gear is 65.52 tons/year, while the mini purse seine fishing gear is 475.92 tons/year.

Download Full-text

Teknologi Penangkapan Rajungan (Portunus pelagicus spp.) Ramah Lingkungan dengan Bubu Kubah di Kabupaten Aceh Barat Provinsi Aceh

Jurnal Marine Kreatif ◽

10.35308/jmk.v1i1.2242 ◽

2020 ◽

Vol 1 (1) ◽

Author(s):

Hafinuddin Hafinuddin ◽

Edwarsyah Edwarsyah

Keyword(s):

Community Service ◽

Coastal Communities ◽

Economic Situation ◽

Fishing Gear ◽

Swimming Crab ◽

Service Program ◽

Portunus Pelagicus ◽

Education Practice ◽

Fish Resources ◽

Main Activity

Fishermen of West Aceh District is still using a tool of unfriendly for environment namely mini trawl for blue swimming crab (Portunus pelagicus spp) fishing, so that it will impact the ecosytem of the sea and the damage to the fish resources such as blue swimming crab. For that reason, there needs to be an alternative of eco-friendly fishing technology to catching blue swimming crab and replace fishing gear unfriendly for environment i.e. mini trawl and exposing the blue swimming crab fishing is as main activity in West Aceh District where Ujong Baroh Village as pilot projetc location for this activity. The community service program has carried out with IbM activity (Ipteks bagi Masyarakat). The activity was done on February – Agustus 2017, where education, practice and accomponiment was used as methods. IbM program is expected to increase skill and business managerial as well as improving the economic situation of the coastal communities.

Download Full-text

PENGARUH SALINITAS YANG BERBEDA TERHADAP KELULUSHIDUPAN DAN PERTUMBUHAN RAJUNGAN (Portunus pelagicus) PADA STADIA CRAB MUDA

Pena Akuatika Jurnal Ilmiah Perikanan dan Kelautan ◽

10.31941/penaakuatika.v18i1.712 ◽

2019 ◽

Vol 18 (1) ◽

Author(s):

Sri Rejeki

Keyword(s):

Water Quality ◽

Survival Rate ◽

Stocking Density ◽

Swimming Crab ◽

Critical Determinant ◽

Portunus Pelagicus ◽

Central Java ◽

Weight Growth ◽

Randomized Design ◽

Average Size

ABSTRAK Rajungan (P. pelagicus) merupakan hasil perikanan yang sangat potensial dan menjadi salah satu komoditi ekspor unggulan. Faktor lain yang menjadi kunci kesuksesan dalam budidaya di tambak adalah pengelolaan budidaya selama pelaksanaan di tambak. Hasil pemantauan lingkungan budidaya tambak dapat dijadikan dasar dalam menentukan tindakan yang akan dilaksanakan dalam pengelolaan budidaya tambak. Kualitas air merupakan faktor penentu keberhasilan budidaya di tambak karena komoditas yang dibudidayakan di tambak hidup dalam badan air. Salinitas berhubungan erat dengan osmoregulasi hewan air. Penelitian ini bertujuan untuk mengkaji pengaruh salinitas yang berbeda terhadap kelulushidupan dan pertumbuhan rajungan (P. pelagicus). Penelitian ini dilaksanakan pada bulan Mei 2017 – Juli 2017 di Desa Tambak Bulusan, Kecamatan Karang Tengah, Kabupaten Demak, Jawa Tengah. Hewan uji adalah crab muda rajungan yang berukuran 5 cm. Padat tebar yang digunakan adalah 10 ekor/m. Pakan yang diberikan adalah udang rebon yang diberikan secara fix feeding rate 5%.Penelitian ini menggunakan metode eksperimen dengan rancangan acak lengkap (RAL) dengan 4 perlakuan dan 3 ulangan. Perlakuan salinitas yang digunakan yaitu 15 ppt, 20 ppt, 25 ppt, dan 30 ppt. Pemeliharaan dilakukan selama 42 hari dan dilakukan pengukuran kualitas air setiap hari. Perbedaan salinitas memberikan pengaruh nyata (P<0,05) terhadap kelulushidupan, pertumbuhan dan RGR. Hasil penelitian menunjukkan bahwa nilai kelulushidupan rajungan (P. pelagicus) yaitu pada perlakuan D sebesar 83,33±5,77%. Pertumbuhan bobot mutlak terbaik yaitu pada perlakuan D sebesar 81,87±2,42 g. Laju pertumbuhan relatif rajungan (P. pelagicus) terbaik yaitu pada perlakuan D sebesar 9,11±0,70%/hari. Perlakuan terbaik yaitu pada perlakuan D dibandingkan dengan perlakuan A, B dan C. Kata kunci: Kelulushidupan, Pertumbuhan, Rajungan, Salinitas, Osmoregulasi ABSTRACT Blue swimming crab (P. pelagicus) is a potential fishery comodity and has become the leading export. Another factor that becomes the key to success in the cultivation in the pond is the management of cultivation during the implementation in the pond. The results of environmental monitoring of pond farming can be used as a basis in determining the actions to be implemented in the management of pond farming. Water quality is a critical determinant of the success of the cultivation in the ponds because of the commodities cultivated in live ponds in water bodies. Salinity is closely related to the osmoregulation of aquatic animals, in the event of a sudden drop in salinity and within a considerable range. The objectives of this research was to find out the effects of different salinity levels the survival rate and growth of blue swimming crab. This reaserch was conducted in Bulusan village, Karang Tengah districts, Demak district, Central Java start from Mei until July 2017. Theof blue swimming crab with average size of 5 cm/ind with stocking density was 10 individuals/tank. The feed given was shrimp rebon. This research was conducted by experimental method using Completely Randomized Design with 4 treatments and 3 replications. There were salinity from treatments A with 15ppt, B with 20ppt, C with 25 ppt, and D with 30 ppt. The maintenance performed for 42 days and water quality monitored daily. The different salinity gave sicnificant effect of survival rate, growth and RGR. The results showed that the best absolute value survival rate of Blue swimming crab (P. pelagicus) that is at treatment D equal to 83,33 ± 5,77%. The weight growth value was in treatment D of 81.87 ± 2.42 g. The relative growth rate of Blue swimming crab (P. pelagicus) is best at treatment D equal to 9,11 ± 0,70% / day. The best treatment was treatment D compared to treatments A, B and C. Keyword: Survival Rate, Growth, Blue Swimming Crab, Salinity, Osmoregulation

Download Full-text

ANALISIS HASIL TANGKAPAN RAJUNGAN (PORTUNUS PELAGICUS) SEBAGAI TARGET UTAMA DAN KOMPOSISI BY-CATCH ALAT TANGKAP GILLNET DI PERAIRAN PANTAI PURIRANO, SULAWESI TENGGARA

JURNAL BIOLOGI TROPIS ◽

10.29303/jbt.v19i2.1217 ◽

2019 ◽

Vol 19 (2) ◽

pp. 205

Author(s):

Normayanti Thamrin Mardhan ◽

La Sara ◽

Asriyana Asriyana

Keyword(s):

Small Scale ◽

Fishing Gear ◽

Swimming Crab ◽

Target Species ◽

Portunus Pelagicus ◽

Gill Nets ◽

Male Crab ◽

The Family ◽

Main Target ◽

By Catch

Abstrak : Penangkapan rajungan di perairan Pantai Purirano umumnya dilakukan oleh usaha perikanan rajungan skala kecil, yang menggunakan jaring insang (gillnet). Gillnet merupakan alat tangkap pasif yang pengoperasiannya tidak merusak sumberdaya hayati perairan. Walaupun demikian, gillnet merupakan alat tangkap yang tingkat selektivitasnya rendah, sehingga dikhawatirkan hasil tangkapan sampingan (bycatch) lebih banyak daripada hasil tangkapan utama (target species). Penelitian ini bertujuan untuk mengetahui proporsi hasil tangkapan rajungan (portunus pelagicus) sebagai target utama dan komposisi bycatch alat tangkap gillnet di perairan Pantai Purirano.Sampel rajungan ditangkap menggunakan jaring insang (gillnet) dengan ukuran mata jaring 4 inci & lebar jaring 80 cm. Hasil tangkapan selama penelitian diperoleh 29 jenis dari 25 famili. Hasil tangkapan yang diutamakan adalah rajungan dari famili Portunidae, tetapi terdapat juga jenis-jenis lain yang juga tertangkap (bycatch), yang sebagian dimanfaatkan (useable) dan sebagian lain dibuang ke laut (discarded). Jumlah total hasil tangkapan rajungan jantan selama penelitian adalah 58 ekor (54%) dan betina sebanyak 50 ekor (46%). Indeks dominansi hasil tangkapan tergolong rendah yaitu berkisar 0,21 – 0,27. Hal ini mengindikasikan bahwa selektivitas alat tangkap jaring insang tergolong rendah.Kata Kunci : Rajungan (Portunus pelagicus), Bycatch, Gillnet, PuriranoAbstrack : Catching crabs in Purirano Beach is generally carried out by small-scale crab fishing businesses, which use gillnet. Gillnet is a passive fishing gear whose operation does not damage aquatic biological resources. However, gillnet is a fishing tool with a low selectivity level, so it is feared that bycatch by-catch is more than the main catch (target species). This study aims to determine the proportion of crab catches (portunus pelagicus) as the main target and the composition of gillnet fishing gear bycatch in Purirano Beach waters. Swimming crab samples were captured using gill nets with mesh sizes of 4 inches & net width of 80 cm. The catch during the study obtained 29 species from 25 families. The preferred catch is crabs from the family Portunidae, but there are also other species that are also caught (bycatch), some are used (useable) and some others are thrown into the sea (discarded). The total number of male crab catches during the study was 58 individuals (54%) and 50 females (46%). The catch index dominance is relatively low, in the range of 0.21 - 0.27. This indicates that the selectivity of gill nets is relatively low.Keywords : Rajungan (Portunus pelagicus), Bycatch, Gillnet, Purirano

Download Full-text

Pengaruh perbedaan umpan bubu kerucut terhadap hasil tangkapan rajungan di Perairan Teluk Manado, Kota Manado (The effect of different bait of trap on swimming crab catches in the waters of Manado Bay, Manado City)

JURNAL ILMU DAN TEKNOLOGI PERIKANAN TANGKAP ◽

10.35800/jitpt.3.2.2018.21430 ◽

2018 ◽

Vol 3 (2) ◽

Author(s):

Reynold Damula ◽

Ivor L. Labaro ◽

Fransisco P. T. Pangalila

Keyword(s):

Scientific Information ◽

Fishing Gear ◽

Swimming Crab ◽

Test Analysis ◽

Chicken Intestine ◽

Fisheries Resources ◽

Mangrove Crabs ◽

The Right ◽

Almost All ◽

Swimming Crabs

ABSTRACTThe development of fishing technology (especially fish, mangrove crabs and swimming crabs), is emphasized more on environmentally friendly fishing gear, with expectations of utilizing fisheries resources in a sustainable. The use of the right bait, is expected to increase the capture capability of the trap; but scientific information like this is not yet widely available. In addition, the size of the catch of the swimming crab by fishermen is not known with certainty, whether the size (legal size) is appropriate or not as set in Permen KP nomor 1 tahun 2015. This research aims to study the effect type of bait on swimming crab catches, as well as evaluate the size of the catch. This research was carried out based on experimental methods, and data collection techniques were carried out by operating 6 units of traps for 20 trips. Three units of trap used scad mackerel bait, while three units used chicken intestine bait. The operation of traps is carried out in 2 locations, namely Malalayang and Tumumpa waters, each of 10 trips. The total catches were 102 swimming crabs, consisting of 65 individuals caught in the traps of scad mackerel bait and 37 individuals caught in the chicken intestine bait. The results of the t-test analysis showed that the use of scad mackerel bait and chicken intestine in traps gave the catches of the crab very significantly different, where the bait scad mackerel gives a better catch than the chicken intestine. The size of the crab catches almost all met the permissible requirements of 98 (94%) both carapace and weight.Keywords: swimming crab, carapace size, trap baits, chicken intestines ABSTRAKPengembangan teknologi penangkapan ikan (khususnya ikan, kepiting bakau dan rajungan), lebih di tekankan pada alat tangkap ikan yang ramah lingkungan, dengan harapan dapat memanfaatkan sumberdaya perikanan secara berkelanjutan. Penggunaan umpan yang tepat, diduga dapat meningkatkan kemampuan tangkap dari alat tangkap bubu; namun informasi ilmiah seperti ini, belum banyak tersedia. Selain itu ukuran hasil tangkapan rajungan oleh nelayan belum diketahui secara pasti, apakah ukurannya (legal size) sesuai atau tidak seperti yang diatur dalam Permen KP nomor 1 tahun 2015. Penelitian ini bertujuan untuk mempelajari pengaruh jenis umpan terhadap hasil tangkapan ranjungan, serta mengevaluasi ukuran hasil tangkapan. Penelitian ini dikerjakan berdasarkan metode eksperimental, dan teknik pengumpulan data dilakukan dengan cara mengoperasikan 6 unit bubu kerucut masing-masing 3 unit bubu menggunakan umpan ikan layang, sedangkan 3 unit bubu lainnya menggunakan umpan usus ayam. Pengoperasian bubu kerucut dilakukan pada 2 lokasi yaitu di perairan Malalayang dan Tumumpa, masing-masing 10 trip. Total hasil tangkapan sebanyak 102 ekor, yang terdiri dari 65 ekor tertangkap pada bubu umpan ikan layang dan 37 ekor tertangkap pada bubu umpan usus ayam. Hasil analisis uji t menunjukan bahwa penggunaan umpan ikan layang dan usus ayam pada bubu kerucut memberikan hasil tangkapan rajungan yang sangat berbeda nyata, dimana umpan ikan layang memberikan hasil tangkapan rajungan lebih baik daripada umpan usus ayam. Ukuran hasil tangkapan rajungan hampir semuanya memenuhi persyaratan yang diperbolehkan yaitu 98 ekor (94 %) baik ukuran karapaks maupun berat.Kata-kata kunci: ranjungan, ukuran karapas, umpan bubu, usus ayam

Download Full-text

Perbandingan Hasil Tangkapan Rajungan Pada Alat Tangkap Bubu Kerucut dengan Umpan yang Berbeda (The Comparison Catch of Swimming crab In Trap with Different Bait)

JURNAL ILMU DAN TEKNOLOGI PERIKANAN TANGKAP ◽

10.35800/jitpt.2.4.2016.14231 ◽

2017 ◽

Vol 2 (4) ◽

Author(s):

Fransisco P.T. Pangalila ◽

Ivor L. Labaro

Keyword(s):

Data Analysis ◽

Comparative Analysis ◽

Coastal Waters ◽

Experimental Methods ◽

T Test ◽

Fishing Gear ◽

Swimming Crab ◽

Portunus Pelagicus ◽

Test Analysis ◽

Swimming Crabs

Swimming Crab (Portunus pelagicus) is one of the economically important marine commodities produced from the coastal waters of Indonesia. The Catching of swimming crabs directly from nature carried out using various types of fishing gear, one of which is a trap. Methods using experimental methods. Therefore, the objective of this research was to study the effect of type of bait to catch swimming crab. Two kinds of bait, the scad mackerel and chicken intestines. Catch data were collected using 6 units of trap, operated in coastal waters of Manado bay; and data analysis is based on a t-test is done using a comparative analysis of the value of the middle observation sample pairs. Besides evaluation carapace size and weight (legal size) swimming crab based Permen KP nomor 1 tahun 2015. The catch was 76 swimming crabs in total, and the results of t-test analysis showed that the use of bait scad mackerel and chicken intestines on traps caused high significant effect in catch. The size of swimming crabs showed that nearly all eligible allowable catch of 71 individuals (93%) both carapace size and weight, and only 5 individuals (7%) who do not eligible allowable catch. Keywords : swimming crab, carapace size, trap baits, chicken intestines. ABSTRAK Rajungan (Portunus pelagicus) merupakan salah satu komoditi hasil laut ekonomis penting yang dihasilkan dari perairan pantai Indonesia. Penangkapan rajungan langsung dari alam dilakukan dengan menggunakan berbagai jenis alat tangkap, salah satunya adalah bubu. Metode Penelitian menggunakan metode eksperimental. Penelitian ini bertujuan untuk mempelajari pengaruh jenis umpan terhadap hasil tangkapan rajungan. Dua jenis umpan yang digunakan, yaitu ikan layang dan usus ayam. Data tangkapan dikumpulkan dengan menggunakan 6 unit bubu, yang dioperasikan di perairan pantai Malalayang Teluk Manado; dan analisis data didasarkan pada uji t yang dikerjakan menggunakan analisis perbandingan nilai tengah contoh pengamatan berpasangan. Selain itu dilakukan evaluasi ukuran karapas dan berat (legal size) rajungan berdasarkan Permen KP nomor 1 tahun 2015. Total hasil tangkapan 76 ekor, dan hasil analisis uji t menunjukkan bahwa penggunaan umpan ikan layang dan usus ayam pada bubu kerucut memberikan hasil tangkapan rajungan yang sangat berbeda nyata. Ukuran hasil tangkapan rajungan yang diperoleh menunjukkan bahwa hampir semuanya memenuhi persyaratan tangkapan yang diperbolehkan yaitu 71 ekor (93 %) baik ukuran karapas maupun berat, dan hanya 5 ekor (7 %) yang tidak memenuhi persyaratan. Kata-kata kunci : rajungan, ukuran karapas, umpan bubu, usus ayam.

Download Full-text

PEMANFAATAN UMPAN ALTERNATIF LIMBAH KEPALA UDANG DAN WAKTU IMMERSING BUBU LIPAT TERHADAP HASIL TANGKPAAN RAJUNGAN (Portunus pelagicus) DI PERAIRAN KARIMUNJAWA KABUPATEN JEPARA (Utilization of Alternative Shrimp Head Waste Feed and Immersing Time of Pot on the Catch of Swimming Crab (Portunus Pelagicus) in Karimunjawa Waters of Jepara District)

SAINTEK PERIKANAN Indonesian Journal of Fisheries Science and Technology ◽

10.14710/ijfst.14.2.91-95 ◽

2019 ◽

Vol 14 (2) ◽

pp. 91

Author(s):

Martiana Neilirrohmah ◽

Aristi Dian Purnama Fitri ◽

Sardiyatmo Sardiyatmo

Keyword(s):

Data Analysis ◽

Research Method ◽

Household Waste ◽

Fishing Gear ◽

Swimming Crab ◽

Portunus Pelagicus ◽

Fresh Fish ◽

Normality Test ◽

Shrimp Head ◽

Swimming Crabs

Bubu lipat adalah alat tangkap yang digunakan untuk menangkap rajungan di Perairan Karimunjawa. Umpan yang biasa digunakan yaitu ikan segar (Damselfish), namun memiliki kendala sehingga peneliti memberikan solusi menggunakan umpan limbah kepala udang (Paneus merguensis) karena murah, bisa didapat dari limbah rumah tangga, serta mengandung protein yang dapat merangsang indera penciuman Rajungan (Portunus pelagicus). Tujuan penelitian adalah menganalisis hasil tangkapan Rajungan (Portunus pelagicus) dengan bubu lipat umpan limbah kepala udang (Penaeus merguensis) dan umpan ikan segar (Damselfish), serta perbedaan waktu immersing (6 jam dan 12 jam). Metode penelitian yang digunakan adalah experimental fishing dengan 8 kali pengulangan. Penelitian dilakukan di Perairan Karimunjawa, Kabupaten Jepara pada bulan Februari 2018. Analisis data menggunakan uji normalitas, uji homogenitas, dan uji-t. Hasil tangkapan Rajungan (Portunus pelagicus) dengan umpan limbah kepala udang lebih sedikit dibandingkan dengan umpan ikan segar (Sig. 0,538). Hasil tangkapan Rajungan (Portunus pelagicus) pada waktu immersing 6 jam lebih banyak dibandingan waktu immersing 12 jam (Sig. 0,512). Tidak terdapat interaksi antara umpan dan waktu immersing terhadap hasil tangkapan Rajungan (Portunus pelagicus) pada penangkapan bubu lipat di Karimunjawa. Trap is one of the fishing gear used to catch a swimming crabs in Karimunjawa. Usually the bait is used fresh baits (Damselfish), but have constraints so the researcher giving a solution to use shrimp head waste (Penaeus merguensis) because cheap, can get from household waste, and contains protein that can stimulate the sense of swimming crabs’s smell. The research purposes to analyze the ratio of the catches between pot using shrimp head waste (Penaeus merguensis) with fresh baits (Damselfish) and immersing time difference (6 hours and 12 hours). The research method used in this study was the experimental fishing with 8 times repetition. The research held at Karimunjawa waters of Jepara District on February 2018. The data analysis used were the normality test, the homogenity test and t-test. The resulted of swimming crabs on the pot with shrimp head waste is less more than fresh baits (Sig. 0,538) . The resulted of swimming crabs on pot with 6 hours of immersing time is in the largest number of catch (Sig. 0,512). Fresh fish baits and shrimp head waste feed and immersing time between 6 hours and 12 hours no interaction the catch of swimming crabs in Karimunjawa

Download Full-text

DAMPAK EKONOMI KEBIJAKAN PEMBATASAN UKURAN RAJUNGAN (Portunus pelagicus) 10 cm DI BETAHWALANG, DEMAK

Management of Aquatic Resources Journal (MAQUARES) ◽

10.14710/marj.v5i3.14396 ◽

2016 ◽

Vol 5 (3) ◽

pp. 106-110

Author(s):

Laily Fitriani ◽

Abdul Ghofar ◽

Dian Wijayanto

Keyword(s):

Renewable Resource ◽

Minimum Size ◽

Swimming Crab ◽

Portunus Pelagicus ◽

Fish Resources ◽

Fisheries Resources ◽

Observation Methods ◽

Collecting Methods ◽

The Impact ◽

High Fish

ABSTRAKSubsektor perikanan dapat berperan dalam pertumbuhan perekonomian bangsa Indonesia karena potensi sumberdaya ikan yang besar dalam jumlah dan keragamannya. Selain itu, sumberdaya ikan termasuk sumberdaya yang dapat diperbaharui dengan pengelolaan yang bijaksana, sehingga dapat terus dinikmati manfaatnya. Rajungan adalah salah satu jenis sumberdaya ikan yang potensial untuk dikembangkan. Selain harganya yang relatif tinggi, semua yang terkandung dalam tubuh rajungan juga dapat dikonsumsi. Oleh sebab itu, penangkapan rajungan oleh para nelayan dengan berbagai ukuran marak dilakukan. Penelitian ini bertujuan untuk menganalisis dampak ekonomi terhadap pembatasan ukuran rajungan (Portunus pelagicus) yang tertangkap dengan ukuran 10 cm di Desa Betahwalang, Demak. Penelitian dilakukan pada bulan Mei 2014 – Juni 2014 Di Betahwalang, Demak. Metode pengumpulan data yang digunakan adalah metode observasi, kuisioner dan wawancara langsung dengan nelayan. Responden dalam wawancara sebanyak 40 orang dengan hasil tangkapan yang berbeda-beda setiap trip-nya. Data yang diperoleh dari hasil wawancara kemudian diolah menggunakan statistikparametrik dengan membedakan dua variabel yaitu berat tangkapan (g) dan penerimaan (Rp) dengan regulasi dan tanpa regulasi. Kesimpulan dari penelitian ini membuktikan bahwa kebijakan pembatasan ukuran rajungan yang tertangkap tidak berpengaruh secara signifikan terhadap hasil tangkapan nelayan, sehingga kebijakan tersebut dapat diterapkan. Kata Kunci : kebijakan, ukuran rajungan, regulasi ABSTRACT Fisheries sector can contribute for economy growth of Indonesia because Indonesia have a high fish resources, both in the amount and diversity.Fish resources are renewable resource and need to be managed wise for continue benefits. Blue swimming crab (Portunus pelagicus) is one of potential fisheries resources. The blue swimming crab price is relatively high and all part of blue swimming crab crab body also can be consumed. Therefore, blue wimming crabs capture by the fishermen with various size is overexploited.This research purpose was to analys the scenario impact of restriction size blue swimming crab application (minimum size of 10 cm) in Betah Walang village, Demak. Research was be done at May 2014 to June 2014. Data collecting methods used observation methods, questionnaire and interview with fisherman. This reserach used 40 people as respondent. Then, data obtained was be analys use parametric statistic, both weight catch (g) and revenue (Rp) with regulation and without regulation. This research proved if there were not significance difference as the impact of minimum size regulation application. Key words: policy, size of blue swimming crab, regulation

Download Full-text