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

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.

scholarly journals Pengaruh penambahan ekstrak minyak tenggiri pada umpan bubu terhadap hasil tangkapan ranjungan di perairan Malalayang, Kota Manado

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Thomson M. Watem ◽  
Henry J. Kumajas ◽  
Fanny Silooy
Keyword(s):  
Coastal Waters ◽  
Scientific Information ◽  
Experimental Methods ◽  
T Test ◽  
Fishing Gear ◽  
Swimming Crab ◽  
Portunus Pelagicus ◽  
North Sulawesi ◽  
Marine Product ◽  
Oil Extract

ABSTRACT Swimming crab (Portunus pelagicus) is one of the economically important marine product commodities resulting from coastal waters Indonesia. Swimming crab in coastal waters of North Sulawesi usually caught accidentally with bottom gillnet. There has been a special fishing gear for crab traps, but not known by local fishermen. Addition of mackerel oil extract on baits could increase the fishing power of swimming crab traps but this kind of scientific information, particularly on swimming crab, not widely available yet. This research aims to study the effect of mackerel oil extract on traps bait to catch swimming crab; and to identify the types of biota captured. This research was conducted in coastal waters of Malalayang Satu, Malalayang District, Manado City; in December 2014 to January 2015; which is based on experimental methods. Six units of trap were operated seven nights; where tree units of them used scad mackerel bait that injected by mackerel oil extract, and tree other units just used scad mackerel bait without mackerel oil extract; and the capture data were analyzed by t test. The catch was 58 swimming crab in total; 42 fish was caught by scad mackerel bait with mackerel oil extract, and 16 swimming crab was caught by bait without mackerel oil extract. Analysis of t test showed that the use of mackerel oil extracts in bait traps, giving different swimming crab catches compared with bait without mackerel oil extracts. Keywords: swimming crab, trap, mackerel oil, Malalayang Manado   ABSTRAK Ranjungan (Portunus pelagicus) merupakan salah satu komoditi hasil laut ekonomis penting yang dihasilkan dari perairan pantai Indonesia. Rajungan di perairan pantai Sulawesi Utara biasanya tertangkap tanpa sengaja dengan jaring insang dasar. Sebenarnya telah ada alat tangkap bubu khusus untuk rajungan, tetapi belum dikenal oleh nelayan lokal. Pemberian ekstrak berupa minyak tenggiri pada umpan diduga dapat meningkatkan kemampuan tangkap dari bubu ranjungan; namun informasi ilmiah seperti ini, khususnya pada ranjungan, belum banyak tersedia. Penelitian ini bertujuan untuk mempelajari pengaruh ekstrak minyak tenggiri pada umpan bubu terhadap hasil tangkapan ranjungan; dan mengidentifikasi jenis-jenis biota yang tertangkap. Penelitian ini dilakukan di perairan pantai Kelurahan Malalayang Satu, Kecamatan Malalayang, Kota Manado; pada bulan Desember 2014 sampai bulan Januari 2015; yang didasarkan pada metode experimental fishing. Enam unit bubu dioperasikan tujuh malam; di mana tiga unit menggunakan umpan ikan layang yang disuntikkan ekstrak minyak tenggiri, dan tiga unit lainnya hanya menggunakan umpan ikan layang tanpa ekstrak; dan data dinalisis dengan uji t. Tangkapan total berjumlah 58 ekor; 42 ekor tertangkap dengan umpan layang yang diberi ekstrak minyak tenggiri, dan 16 ekor tertangkap dengan umpan tanpa ekstrak minyak tenggiri. Hasil analisis uji t menunjukkan bahwa penggunaan ekstrak minyak tenggiri pada umpan bubu memberikan hasil tangkapan ranjungan yang lebih banyak dibandingkan dengan umpan tanpa ekstrak minyak tenggiri. Kata-kata kunci: rajungan, bubu, minyak tenggiri, Malalayang Manado. [1] Penulis untuk penyuratan; email: [email protected]

scholarly journals 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)

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 

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

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  

scholarly journals VARIABILITY OF CARAPACE WIDTH SIZE AND ABUNDANCE OF BLUE SWIMMING CRABS (Portunus pelagicus Linnaeus) IN PATI WATERS

2016 ◽  
Vol 7 (2) ◽  
Author(s):  
Dyah Ika Nugraheni ◽  
Achmad Fahrudin ◽  
. Yonvitner
Keyword(s):  
Coastal Waters ◽  
Accretion Rate ◽  
Carapace Width ◽  
Management Strategies ◽  
Fishing Effort ◽  
Swimming Crab ◽  
Nearshore Zone ◽  
Portunus Pelagicus ◽  
Males And Females ◽  
Swimming Crabs

<p><em>Fishing effort enhancement would put pressure on blue swimming crab resources and its ecosystem. The objective of this study was to determine the spatial distribution based on the size of the carapace width (CW), abundance, temperature, salinity, depth, and fishing intensity in Pati waters which was divided into two zones (zones 1=nearshore, zone 2=offshore). The result showed that the average of carapace width in zone 1 to zone 2 was significantly different (p &lt;0.05), as well as between males and females. Average number of individual (abundance) was significantly different according to fishing areas and sex (p &lt;0.05). The average of water temperature in zone 1 was higher than in zone 2, salinity in zone 1 was smaller than in zone 2, and the water depth in zone 1 was shallower than in zone 2. The higher the crab catch intensity leaded to the smaller the abundance and size of carapace width. Alternative management strategies were proposed such as to divert fishing grounds from coastal waters to offshore during low productivity season, to uphold rules on minimum legal size for catching (Lm = 107 mm),  to release of berried females catch, and to reduce accretion rate of gear and fishing fleet mainly in the coastal zone waters.</em></p><p><em><strong><em>Keywords:  </em></strong><em>blue swimming crab, carapace widht (CW), abundance, intensity of fishing</em></em></p>

scholarly journals 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)

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

scholarly journals VARIABILITY OF CARAPACE WIDTH SIZE AND ABUNDANCE OF BLUE SWIMMING CRABS (Portunus pelagicus Linnaeus) IN PATI WATERS

2016 ◽  
Vol 7 (2) ◽  
Author(s):  
Dyah Ika Nugraheni ◽  
Achmad Fahrudin ◽  
. Yonvitner
Keyword(s):  
Coastal Waters ◽  
Accretion Rate ◽  
Carapace Width ◽  
Management Strategies ◽  
Fishing Effort ◽  
Swimming Crab ◽  
Nearshore Zone ◽  
Portunus Pelagicus ◽  
Males And Females ◽  
Swimming Crabs

Fishing effort enhancement would put pressure on blue swimming crab resources and its ecosystem. The objective of this study was to determine the spatial distribution based on the size of the carapace width (CW), abundance, temperature, salinity, depth, and fishing intensity in Pati waters which was divided into two zones (zones 1=nearshore, zone 2=offshore). The result showed that the average of carapace width in zone 1 to zone 2 was significantly different (p <0.05), as well as between males and females. Average number of individual (abundance) was significantly different according to fishing areas and sex (p <0.05). The average of water temperature in zone 1 was higher than in zone 2, salinity in zone 1 was smaller than in zone 2, and the water depth in zone 1 was shallower than in zone 2. The higher the crab catch intensity leaded to the smaller the abundance and size of carapace width. Alternative management strategies were proposed such as to divert fishing grounds from coastal waters to offshore during low productivity season, to uphold rules on minimum legal size for catching (Lm = 107 mm),  to release of berried females catch, and to reduce accretion rate of gear and fishing fleet mainly in the coastal zone waters.Keywords:  blue swimming crab, carapace widht (CW), abundance, intensity of fishing

scholarly journals Pengaruh bentuk bubu terhadap hasil tangkapan rajungan portunus pelagicus di perairan pantai Desa Kema tiga Kabupaten Minahasa Utara Provinsi Sulawesi Utara (The effect of pots shape toward the catch of swimming crab in coastal waters Kema Tiga Village)

2017 ◽  
Vol 2 (5) ◽  
Author(s):  
Moch. Abdul Chalim ◽  
Johnny Budiman ◽  
Emil Reppie
Keyword(s):  
Coastal Waters ◽  
Scientific Information ◽  
Fishing Gear ◽  
Swimming Crab ◽  
Nutritional Content ◽  
Portunus Pelagicus ◽  
Rectangular Shape ◽  
Conical Shape ◽  
North Sulawesi ◽  
By Catch

Swimming crab (Portunus pelagicus) is one of the fishery commodities that have high sales value for which raced flavor and high nutritional content. This swimming crab in coastal waters of North Sulawesi usually caught accidentally (by catch) with bottom gillnets. There has been a special fishing gear for crab traps, but not known by local fishermen. The differences of trap shape could increase the fishing power of swimming crab traps; but such scientific information is not widely available yet. Therefore, this research aimed to study the effect of pots shape to catch swimming crab; and identifies the types of biota captured. This research was conducted in the coastal waters of  Kema Tiga village, North Minahasa Regency; from September to December 2014; which is based on the experimental method. Bubu six units of traps (three units conical shape, and three other rectangular shape), operated for eight nights to collect data; used scad mackerel bait; and the capture data were analyzed by t test.  The catch was 86 swimming crab in total; 56 was caught by conical shape traps, and 30 individuals were caught by rectangular shape traps. Analysis of test showed that t0 = 4.596> t table 0.01; 7 = 3.499, which means that the use of conical shape traps, giving highly significantly different swimming crab catches compared to rectangular shape traps. Keywords: Swimming crab, trap, mackerel bait, North Minahasa   ABSTRAK Rajungan (Portunus pelagicus) merupakan salah satu komoditi perikanan yang memiliki nilai jual tinggi karena memiliki rasa yang lezat dan kandungan gizi yang tinggi). Rajungan  ini di perairan pantai Sulawesi Utara biasanya tertangkap tanpa sengaja (by catch) dengan jaring insang dasar. Sebenarnya telah ada alat tangkap bubu khusus untuk rajungan, tetapi belum dikenal oleh nelayan lokal. Perbedaan bentuk bubu diduga dapat meningkatkan kemampuan tangkap dari bubu ranjungan; namun informasi ilmiah seperti ini belum banyak tersedia. Oleh karena itu, penelitian ini bertujuan untuk mempelajari pengaruh bentuk bubu terhadap hasil tangkapan ranjungan; dan mengidentifikasi jenis-jenis biota yang tertangkap.  Penelitian ini dilakukan di perairan pantai Desa Kema Tiga, Kabupaten Minahasa Utara; pada bulan September sampai Desember 2014; yang didasarkan pada metode eksperimental. Enam unit bubu (tiga unit bentuk kerucut terpancung dan tiga unit bentuk empat persegi) dioperasikan selama delapan malam untuk mengumpulkan data; menggunakan umpan ikan layang; dan data dinalisis dengan uji t. Tangkapan total berjumlah 86 ekor; 56 ekor tertangkap dengan bubu bentuk kerucut terpancung, dan 30 ekor tertangkap dengan bubu bentuk empat persegi. Hasil analisis menunjukan bahwa t hitung = 4,596 > t tabel 0,01;7 = 3,499, yang berarti bahwa penggunaan konstruksi bubu bentuk kerucut terpancung, memberikan hasil tangkapan rajungan yang sangat berbeda nyata dibandingkan dengan konstruksi bubu empat persegi. Kata-kata kunci: Rajungan, bubu, umpan ikan layang, Minahasa Utara.

scholarly journals EFFECT OF PICTURE AND PICTURE LEARNING MODELS ON ELEMENTARY SCHOOL STUDENT LEARNING OUTCOMES

2020 ◽  
Vol 1 (2) ◽  
pp. 69-79
Author(s):  
Zulfadli Zulfadli ◽  
Mardhatillah Mardhatillah ◽  
Agus Kistian
Keyword(s):  
Data Analysis ◽  
Learning Outcomes ◽  
Class Ii ◽  
Posttest Score ◽  
T Test ◽  
Learning Models ◽  
Healthy Living ◽  
Test Analysis ◽  
Grade Ii ◽  
Class Iib

This study aims to find out the influence of picture and picture learning models on the learning outcomes of grade II students at SD Negeri 1 Simpang 4 on the theme of clean and healthy living. The approach used in this research is a quantitative approach with the type of research used is quasi experimentation. The sample in this study consisted of 42 people consisting of 21 people of class IIA and 21 people of class IIB. Data collection techniques used are observation, test, validation, and documentation. The data analysis technique used is the T-test analysis. Based on the results of the study, it was found that the average posttest value of students' learning outcomes in the experimental class (II-B) of SD Negeri I Simpang Peut Nagan Raya regency was 76.19, while the average posttest score of students in the control class (II-B) of SD Negeri I Simpang Peut Nagan Raya regency was 63.33. This is proven by the results of statistical data analysis "T-Test Test" that obtained thitung value (3,339) > ttabel (1,724). This proves that hypotheses are accepted. Thus, it can be concluded that the picture and picture learning model affects students' learning outcomes on the theme of clean and healthy living in grade II of SD Negeri 1 Simpang Peut.

scholarly journals DISTRIBUSI SPASIO-TEMPORAL POPULASI RAJUNGAN (Portunus pelagicus) BETINA MENGERAMI TELUR DI PERAIRAN PESISIR LAMPUNG TIMUR

2015 ◽  
Vol 6 (2) ◽  
pp. 95
Author(s):  
Zairion Zairion ◽  
Yusli Wardianto ◽  
Achmad Fahrudin ◽  
Mennofatria Boer
Keyword(s):  
Water Depth ◽  
Coastal Waters ◽  
Management Strategy ◽  
Temporal Distribution ◽  
Fishing Gear ◽  
Portunus Pelagicus ◽  
Temporal Occurrence ◽  
Breeding Seasons ◽  
Two Peaks ◽  
One Way Anova

Distribusi spasio-temporal populasi rajungan betina yang mengerami telur (BEF) telah dikaji di perairan pesisir Lampung Timur. Penelitian dilakukan pada tiga stratifikasi kedalaman perairan: <5 m (strata S1), antara 5-10 m (strata S2), dan >10 m (strata S3) serta empat sub-area (A1-A4) di setiap stratum dari bulan Maret 2012-Februari 2013. Kelimpahan populasi rajungan BEF diindikasikan dengan proporsi rajungan BEF/betina tidak mengerami telur (NBF) dan BEF/total individu. Perbedaan proporsi dianalisis dengan uji ANOVA satu arah. Hasil penelitian menunjukan bahwa proporsi rajungan BEF bervariasi secara spasial, ditemukan mulai dari strata S1 dan meningkat ke strata S3. Daerah pemijahan dan pembiakan yang dominan terdapat pada kedalaman air >5 m dan di sub-area A2 dan A3. Secara agregat, BEF ditemukan sepanjang tahun dengan dua puncak kelimpahan (Mei dan September-Oktober) sebagai puncakmusimpemijahan dan pembiakan. Proporsi rajungan BEF secara spasio temporal tumpang tindih dengan daerah penangkapan rajungan pada hampir semua musim. Diperlukan strategi pengelolaan pemanfataan yang sesuai untukmenunjang keberhasilan reproduksi, diantaranya penangkapan menggunakan alat yang dapat mempertahankan BEF dalam keadaan hidup selama terperangkap, kemudian melepaskannya atau memeliharanya di area tertentu sampai menetaskan telurnya sehingga dapat meningkatkan produksi larva dan pada akhirnya dapat mempertahankan populasi dan stok.Spatial-temporal distribution of berried females (BEFs) Portunus pelagicus was studied in East Lampung coastal waters. An investigation was conducted at three water depth stratifications, i.e., less than 5 m (stratum S1), between 5-10 m (stratum S2) and more than 10 m (stratum S3), as well as four sub-areas (A1 A4) in each of stratifications from March 2012 to February 2013. The abundance of BEF population was indicated by their proportion to non-berried females (NBFs) and to the total individual crabs, while the differences among the results were tested by one-way ANOVA test. The results showed that the proportions of BEFs varied spatially, increased from stratum S1 to S3. Spawning and breeding seemed to dominantly occur at water depth more than 5 m and A2 and A3 sub-areas. BEFs were found throughout the year with two peaks of its occurrence, i.e. in May and in September to October, and those months were considered as peak of spawning and breeding seasons. The spatial and temporal occurrence of BEFs overlapped with crab fishing grounds in most fishing seasons. An appropriate fisheries management strategy is required for their reproduction success. Capturing crab by using eco-friendly fishing gear that render caught BEFs alive and releasing them or keeping them in certain area for hatching their eggs would enhance larvae production to maintain population and stock.

scholarly journals THE INFLUENCE OF PROFIT AND CASH FLOW TO PREDICT FINANCIAL DISTRESS

2019 ◽  
Vol 1 (2) ◽  
pp. 191-203
Author(s):  
Tongam Sinambela ◽  
Agus Irawati Marpaung
Keyword(s):  
Data Analysis ◽  
Cash Flow ◽  
Financial Distress ◽  
Stock Exchange ◽  
Estimation Method ◽  
Equation System ◽  
T Test ◽  
Manufacturing Companies ◽  
Test Analysis ◽  
Simultaneous Equation System

This study aims to examine and analyze how profit and cash flow individually or collectively could influence the prediction of financial distress. This study uses quantitative data methods using the Altman Z-Score analysis method. Data analysis is performed through Eviews8 software application. The population in this study are all manufacturing companies listed on the Indonesia Stock Exchange (IDX) in the period from 2015-2018. The samples used are all manufacturing companies with subsector of plastic and packaging. Data analysis in this study uses econometric model with a simultaneous equation system and data panel estimation method. The results of the study prove that profit does not have a significant effect on financial distress. This is supported by t-test analysis which result in a smaller t-count compared to t-table, with the number -1.76 <2.05, therefore, H1 is rejected. On the other hand, cash flow has a significant effect on financial distress, supported by the result of t-test analysis which shows that the t-count is bigger than t-table, with the number 2.67> 2.05. Therefore, H2 is accepted. Whereas, both profit and cash flow have a significant influence on financial distress, which the results of the analysis of the F test is f-count is higher that f-table, with the number 17.45> 170.77. As a result, H3 is accepted

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