scholarly journals Growth patterns of skipjack tuna (Katsuwonus pelamis, linnaeus 1758) caught by troll line in Prigi waters, Trenggalek East Java Indonesia

2021 ◽  
Vol 890 (1) ◽  
pp. 012047
Author(s):  
G Bintoro ◽  
T D Lelono ◽  
D Setyohadi ◽  
U Fadzilla
Keyword(s):  
Fat Body ◽  
Sampling Period ◽  
Fishing Effort ◽  
Growth Patterns ◽  
Skipjack Tuna ◽  
Market Demand ◽  
Katsuwonus Pelamis ◽  
Weight Relationship ◽  
The Pacific ◽  
Relationship Of

Abstract Skipjack tuna (Katsuwonus pelamis) is an important pelagic fish species caught in tropical and subtropical waters of the Pacific, Atlantic, and Indian oceans. Skipjack tuna (K. pelamis) is also a high economic fisheries resource in Prigi waters which is caught by troll line. High market demand results in high levels of exploitation. This study aimed to identify the length-weight relationship and biological reproduction of skipjack tuna in the Prigi waters. The research was conducted in the sampling period between December 2019 - April 2020 with total samples obtained as much as 1642 fish and was analyzed using linear regression. The results informed that the length-weight relationship of skipjack tuna was positive allometric with equation W=0.007FL3.223 which means that the fish has a fat body. The sex ratio between male and female fish is 1:1. While gonad maturity level obtained in this study is mostly in GML 1 and GML 2 which indicates that the catches were dominated by immature fish, so it is necessary to limit fishing effort so that sustainability of the skipjack tuna (K. pelamis) resource can be managed.

scholarly journals Utilization rate and length-weight relationship of shortfin scad (Decapterus macrosoma) in Bali Strait Indonesia

2021 ◽  
Vol 322 ◽  
pp. 05005
Author(s):  
Gatut Bintoro ◽  
Ledhyane I. Harlyan ◽  
Tri D. Lelono ◽  
Nofita A. Andini
Keyword(s):  
Fat Body ◽  
Secondary Data ◽  
Model Analysis ◽  
Fishing Effort ◽  
Production Model ◽  
Utilization Rate ◽  
Market Demand ◽  
Total Allowable Catch ◽  
Relationship Analysis ◽  
Weight Relationship

Shortfin scad (Decapterus macrosoma) is an essential economic fish resource that spreads over tropical and subtropical oceans and is mostly caught in Bali Strait. High market demand for this fish leads to an increase in fishing efforts. In contrast, uncontrolled fishing efforts will threaten its sustainability and economic potential. This research was conducted based on catches during February – March 2020 for total samples of 1,115 fish and catch-effort time series secondary data (2008-2019). Length-weight data were analyzed using linear regression. The utilization level is predicted using the surplus production model analysis, Schaefer and Fox models, to estimate maximum sustainable yield (MSY). Results informed that based on Fox model analysis, values of sustainable catch (YMSY), optimum fishing effort (fopt), and total allowable catch (YTAC) were 1,585 tons/year, 1,782 trips/year, and 1,268 tons/year, respectively. The utilization rate value was 125%. An increase in fishing efforts led to the excess amount of catch over the MSY level. In addition, based on length-weight relationship analysis, the growth pattern of shortfin scad (D. macrosoma) was found negative allometric with equation W = 0.0175 L2.776. In conclusion, the fish has a fat body shape, and the stock is in overfishing condition.

scholarly journals KOMPOSISI UKURAN CAKALANG (Katsuwonus pelamis) HASIL TANGKAPAN HUHATE YANG DIDARATKAN DI TULEHU, AMBON

2017 ◽  
Vol 3 (3) ◽  
pp. 199 ◽  
Author(s):  
Budi Nugraha ◽  
Siti Mardlijah ◽  
Enjah Rahmat
Keyword(s):  
Total Sample ◽  
Fish Length ◽  
Small Fish ◽  
Skipjack Tuna ◽  
Katsuwonus Pelamis ◽  
Weight Relationship ◽  
Result Show ◽  
The Individual ◽  
Relationship Of ◽  
Length Frequency Data

Eksploitasi sumber daya ikan cakalang (Katsuwonus pelamis) di perairan Laut Banda telah berlangsung lama. Saat ini sumber daya ikan cakalang telah memperlihatkan tanda-tanda overfishing. Indikasi ini antara lain ditandai oleh penurunan hasil tangkapan dan ukuran individu, perubahan komposisi hasil tangkapan, serta kecenderungan meningkatnya proporsi beberapa jenis ikan berukuran kecil. Data frekuensi panjang dikumpulkan dari bulan Maret sampai Desember 2007 berjumlah 4.293 ekor. Pengukuran panjang dan bobot untuk mengetahui hubungan panjang dan bobot ikan dilakukan pada bulan Maret, Mei, Juli, dan Desember 2007 dengan jumlah contoh 296 ekor. Tulisan ini menyajikan informasi tentang distribusi ukuran panjang dan bobot, hubungan panjang dan bobot ikan cakalang dan ukuran pertama kali tertangkap (Lc) hasil tangkapan huhate yang beroperasi di perairan Laut Banda. Hasil analisis menunjukan bahwa ikan cakalang mempunyai kisaran panjang cagak (FL) antara 30-78 cmFL dan kisaran bobot antara 600-4300 g. Analisis regresi hubungan panjang dan bobot diperoleh persamaan W=0,0485 L2,751, R2=0,9427 dengan nilai koefisien regresi (r)=0,9709, dan nilai slope (b)=2,751. Dari hasil analisis tersebut diketahui bahwa pola pertumbuhan ikan cakalang bersifat allometrik negatif. Ukuran pertama kali tertangkap (Lc) ikan cakalang oleh huhate adalah 41,7 cmFL. Eksploitasi sumber daya ikan cakalang (Katsuwonus pelamis) di perairan Laut Banda telah berlangsung lama. Saat ini sumber daya ikan cakalang telah memperlihatkan tanda-tanda overfishing. Indikasi ini antara lain ditandai oleh penurunan hasil tangkapan dan ukuran individu, perubahan komposisi hasil tangkapan, serta kecenderungan meningkatnya proporsi beberapa jenis ikan berukuran kecil. Data frekuensi panjang dikumpulkan dari bulan Maret sampai Desember 2007 berjumlah 4.293 ekor. Pengukuran panjang dan bobot untuk mengetahui hubungan panjang dan bobot ikan dilakukan pada bulan Maret, Mei, Juli, dan Desember 2007 dengan jumlah contoh 296 ekor. Tulisan ini menyajikan informasi tentang distribusi ukuran panjang dan bobot, hubungan panjang dan bobot ikan cakalang dan ukuran pertama kali tertangkap (Lc) hasil tangkapan huhate yang beroperasi di perairan Laut Banda. Hasil analisis menunjukan bahwa ikan cakalang mempunyai kisaran panjang cagak (FL) antara 30-78 cmFL dan kisaran bobot antara 600-4300 g. Analisis regresi hubungan panjang dan bobot diperoleh persamaan W=0,0485 L2,751, R2=0,9427 dengan nilai koefisien regresi (r)=0,9709, dan nilai slope (b)=2,751. Dari hasil analisis tersebut diketahui bahwa pola pertumbuhan ikan cakalang bersifat allometrik negatif. Ukuran pertama kali tertangkap (Lc) ikan cakalang oleh huhate adalah 41,7 cmFL. Exploitation of skipjack tuna resources in the Banda Sea have lasted long. Currently skipjack tuna resources have been showing signs of over fishing. Indications were, among others, characterized by a decrease in the catch and the size of the individual, changes in the composition of the catch and the trend of increasing proportions of several types of small fish. Length frequency data collected from March until December 2007 amounted 4,293. Length and weight measurements to determine the length and weight relationship of fish conducted in March, May, July, and December 2007 with a total sample was 296. This paper presents information about the distribution of length and weight, length and weight relationship and the length at first capture (Lc) caught by pole and liner operating in theBanda Sea. The analysis showed that the skipjack tuna has a long range between 30-78 cmFL and weight range between 600-4300 g. Regression analysis of length and weight relationship equation was W=0.0485 L2.751, R2=0.9427 with regression coefficient (r)=0.9709, and slope value (b)=2.751. Result show that the growth pattern of skipjack tuna was negative allometric. The length at first captured (Lc) of skipjack was 41.7 cmFL.

scholarly journals Length-weight relationship of Threadfin Bream (Nemipterus sp.) in Village Malang Rapat Waters, Bintan Regency, Riau Island

2020 ◽  
Vol 13 (2) ◽  
pp. 449
Author(s):  
Rapita Rapita ◽  
Susiana Susiana ◽  
Rochmady Rochmady
Keyword(s):  
Growth Patterns ◽  
Allometric Growth ◽  
Fish Resources ◽  
Weight Relationship ◽  
Relationship Of

Village Malang Rapat waters are have the potential and habitat of kurisi fish resources (Nemipterus sp.). The research was to determine the length-weight relationship of kurisi fish (Nemipterus sp.) in Village Malang Rapat. Sampling of kurisi fish (Nemipterus sp.) in two months (October-November 2020) is taken once a week based on fishing grounds and habitat. Length-weight relationship of female and male kurisi fish (Nemipterus sp.) were y = 1,1568x2,0659 and y = 1,2123x1,8971 respectively, based on this value show that female and male kurisi fish (Nemipterus sp.) in Village Malang Rapat waters have negative allometric growth patterns (b < 3).

scholarly journals POTENSI LESTARI IKAN SELAR KUNING (Selaroides leptolepis) DI PERAIRAN SELAT SUNDA (Population Dynamics of Yellowstripe Scad (Selaroides leptolepis) in Sunda Strait)

2016 ◽  
Vol 5 (1) ◽  
pp. 101 ◽  
Author(s):  
Maizan Sharfina ◽  
Mennofatria Boer ◽  
Yunizar Ernawati
Keyword(s):  
Economic Value ◽  
Fishing Effort ◽  
Maximum Sustainable Yield ◽  
Growth Patterns ◽  
Purse Seine ◽  
Sustainable Yield ◽  
Market Demand ◽  
Salted Fish ◽  
Frozen Fish ◽  
The One

<p>ABSTRACT<br />Yellowstripe scad included the one of commodity that has an important economic value in the Sunda Strait. Commonly, this species processed by Pandeglang fishermen to be the boiled fish, salted fish, grilled fish, besides it also traded in fresh or frozen fish product. The high market demand can not offset the production of this species from the nature. Therefore, it needed an information about resources of yellowstripe scad in the waters of the Sunda Strait in order to manage it well. The objective of this study was to estimate the maximum sustainable yield (MSY) and the optimum fishing effort (fopt), so that the yellowstripe scad resources in the waters of the Sunda Strait can be utilized optimally and sustainably. Based on the standardization analysis, the purse seine be made the standard fishing gear for estimating the MSY of yellowstripe scad. The yellowstripe scad growth patterns during the study is isometric. Trends of CPUE of the yellowstripe scad fisheries tends to decrease during 2003 to 2013. Then, this species was estimated its maximum sustainable yield (MSY) of 304.50 tons per year, with the optimum fishing effort of 12.478 trips per year. The decline of the catch per fishing effort can indicated that the yellowstripe scad fishing conditions in the Sunda Strait was having the overfishing phenomenon.</p><p><br />Key words: Sunda Strait, sustainable potential, yellowstripe scad</p><p>-------</p><p>ABSTRAK</p><p><br />Ikan selar kuning termasuk salah satu komoditas perikanan yang memiliki nilai ekonomis penting di perairan Selat Sunda. Jenis ikan ini, selain banyak dimanfaatkan oleh nelayan sekitar Kabupaten Pandeglang sebagai ikan pindang, ikan bakar, ikan asin, juga diperdagangkan dalam keadaan segar maupun dibekukan. Tingginya permintaan pasar tidak dapat mengimbangi produksi ikan tersebut di alam. Oleh karena itu, untuk memperoleh informasi mengenai tingkat pemanfaatan sumber daya ikan selar kuning di perairan Selat Sunda, diperlukan suatu kajian mengenai potensi lestari ikan selar kuning. Tujuan dari penelitian ini adalah untuk mengetahui hasil tangkapan maksimum lestari (maximum sustainable yield atau MSY) serta upaya penangkapan maksimum lestari (fopt) sehingga sumberdaya ikan selar kuning di Perairan Selat Sunda dapat dimanfaatkan secara optimal dan berkelanjutan. Berdasarkan hasil standardisasi, alat tangkap standart yang digunakan adalah purse seine. Pola pertumbuhan ikan selar kuning selama penelitian, yaitu isometrik. Hasil perhitungan CPUE menunjukkan adanya produksi yang cenderung menurun dengan upaya penangkapan yang meningkat dari tahun 2003 sampai 2013. Hasil perhitungan potensi hasil tangkapan maksimum lestari (MSY) diestimasi sebesar 304,50 ton per tahun, dan upaya penangkapan optimumnya adalah 12.478 trip per tahun. Penurunan hasil tangkapan per upaya penangkapan dapat dijadikan salah satu indikasi bahwa kondisi penangkapan ikan selar kuning di Perairan Selat Sunda sedang mengalami gejala lebih tangkap atau overfishing.</p><p><br />Kata kunci: Selat Sunda, potensi lestari, ikan selar kuning</p>

scholarly journals Pemanfaatan Data Biologi Ikan Cakalang (Katsuwonus pelamis) dalam Rangka Pengelolaan Perikanan Bertanggung Jawab di Perairan Teluk Bone

2012 ◽  
Vol 14 (1) ◽  
pp. 107 ◽  
Author(s):  
Muhammad Jamal ◽  
Muhammad Fedi Alfiadi Sondita ◽  
John Haluan ◽  
Budy Wiryawan
Keyword(s):  
Growth Model ◽  
Fisheries Management ◽  
Growth Pattern ◽  
Fork Length ◽  
Biological Characteristics ◽  
Skipjack Tuna ◽  
Katsuwonus Pelamis ◽  
Management Zone ◽  
Weight Relationship ◽  
First Maturity

The Bone Bay is part of Fisheries Management Zone WPPI 713 that covers Makassar strait, Flores sea and Bali sea. To such vast marinearea, fisheries management can be started from smaller region, e.g. embayment waters. Biological characteristics of skipjack tuna (Katsuwonuspelamis) are some of important information for developing fisheries management in the area. This research was aimed to determine length-weight relationship, size composititon, growth pattern and biologically feasible size of the fish. Data were obtained from fish caught byfisherman from Januari to December 2007. The bay was divided into three study areas, i.e. Northern, Centre and Southern Zones. The bcoefficients for length-weight relationship in the three zones were equal 3 [not significant]. The average fork-length (FL) in each zoneshowed similar trends: increased from January to June, then stabilized until December. Using von Bertalanffy’s growth model, the maximumFL (L ∞ of 759.75 mm is estimated for fish at age of 84 months. The length at first maturity of the fish is 465 mm (FL).

scholarly journals Growing Pattern of Blue Swimming Crab, Portunus pelagicus at Two Different Locations in Manado Bay

2018 ◽  
Vol 6 (1) ◽  
pp. 149
Author(s):  
Frank Rijkaard Makahinda ◽  
Rose O.S.E Mantiri ◽  
Boyke H. Toloh
Keyword(s):  
Growth Pattern ◽  
Carapace Width ◽  
Market Demand ◽  
Swimming Crab ◽  
Chi Square ◽  
Portunus Pelagicus ◽  
Relationship Analysis ◽  
Weight Relationship ◽  
Relationship Of ◽  
Swimming Crabs

Portunus pelagicus (blue swimming crab) is one of the important economical marine commodities produced from Indonesian coastal waters that has increasing market demand among fishery commodities. The purpose of this research is to reveal the relationship of carapace width and weight, the growth pattern and the carapace width-weight ratio of P. pelagicus crabs at two different research sites in Manado Bay. The benefits of this study, can be a reference for further studies on blue swimming crabs, P. pelagicus, and information obtained in this study could become important information needed for the maximum sustainable utilization of blue swimming crab, P. pelagicus.This research was conducted at two locations, namely Kelurahan Bahu, Sub-district of Malalayang with coordinates of 1 ° 27'49.86 "North and 124 ° 49'35.79" East and second location in Tumumpa Dua, Sub-district of Tuminting with coordinates 1 ° 31'14.51"North - 124 ° 50'28.67"East. Samples of blue swimming crabs were collected by deploying traps which are placed at 5-7 meters with the distance between traps 10 meter. Traps were placed at 17.00 pm and lifted on the next day at 06.00 am. Measurement of the width of the carapace conducted by using the ruler with 0.1 cm accuracy and weight measurement using the scales with 0.1 gram accuracy.The correlation value obtained for the wide and weight relationship of blue swimming crabs in the Sub-district of Malalayang is 0.953 for males and 0.898 for females. In Kelurahan Tumumpa Dua, Sub-dis ittrict of Tuminting 0.829 for males and 0.920 for females respectively. Based on these values the increase in the width of the carapace will affect the weight gain of the crab. The growth pattern of P. pelagicus crab in Kelurahan Bahu, Sub-district of Malalayang and Tumumpa Dua Sub-district Tuminting showed negative allometric growth pattern with b <3 value which means faster carapace growth compared to the weight of crab. From the result of chi square test on wide body and weight relationship analysis, is found same for both locations with value x2 table = 7.815 <x2 count = 112.3134. This is presumably due to one of the external factors is the availability of food.Keywords: Rajungan, growth pattern, Manado Bay AbstrakPortunus pelagicus merupakan salah satu komoditi hasil laut ekonomis penting yang dihasilkan dari perairan pantai Indonesia dengan permintaan pasar terhadap komoditas rajungan yang terus meningkat. Adapun tujuan penelitian ini yaitu mengetahui hubungan lebar berat rajungan P. pelagicus, pola pertumbuhan rajungan P. pelagicus dan perbandingan lebar berat rajungan P. pelagicus di dua lokasi penelitian yang berbeda di Teluk Manado. Manfaat penelitian ini, dapat menjadi bahan acuan untuk studi lebih lanjut mengenai rajungan P. pelagicus serta infomasi yang didapat dalam penelitian ini bisa menjadi bahan kajian untuk pemanfaatan rajungan P. pelagicus secara maksimal serta berkelanjutan.Penelitian ini dilaksanakan pada dua lokasi yakni di Kelurahan Bahu Kecamatan Malalayang dengan koordinat 1°27'49.86"LU - 124°49'35.79"BT dan lokasi kedua di Kelurahan Tumumpa Dua Kecamatan Tuminting dengan koordinat 1°31'14.51"LU - 124°50'28.67"BT. Pengambilan sampel dilakukan dengan alat tangkap bubu yang diletakan pada kedalam 5-7 meter dengan jarak antara bubu 10 meter. Bubu diletakan pada pukul 17.00 wita dan diangkat pada esok harinya pukul 06.00 wita. Pengukuran lebar karapas menggunakan mistar dengan ketelitian 0,1 cm dan pengukuran berat tubuh menggunakan timbangan 0,1 gr.Nilai korelasi yang didapat untuk hubungan lebar berat rajungan P. pelagicus di Kelurahan Bahu Kecamatan Malalayang 0,953 untuk jantan dan 0,898 untuk betina. Di Kelurahan Tumumpa Dua Kecamatan Tuminting 0,829 untuk jantan dan 0,920 untuk betina. Berdasarkan nilai tersebut pertambahan lebar karapas akan berpengaruh pada kenaikan berat tubuh dari rajungan. Pola pertumbuhan rajungan P. pelagicus di Kelurahan Bahu Kecamatan Malalayang dan di Kelurahan Tumumpa Dua Kecamatan Tuminting menunjukan pola pertumbuhan yang bersifat allometrik negatif dengan nilai b < 3 yang berarti pertumbuhan karapas lebih cepat dibandingkan pertambahan berat rajungan. Dari hasil analisis chi square lebar berat tubuh, sama untuk kedua lokasi penelitian dengan nilai x2 tabel =  7,815 < x2 hitung = 112,3134. Hal ini diduga karena salah satu faktor eksternal yakni  ketersediaan makanan.Kata  kunci : Rajungan,  Pola pertumbuhan, Teluk Manado.

scholarly journals STATUS PEMANFAATAN IKAN CAKALANG (Katsuwonus pelamis) DI PERAIRAN KABUPATEN LUWU SULAWESI SELATAN

2019 ◽  
Vol 2 (2) ◽  
pp. 216-228
Author(s):  
Muhammad Jamal Alwi ◽  
Hasrun Abdullah ◽  
Ernaningsih Aras
Keyword(s):  
Fishing Effort ◽  
Maximum Sustainable Yield ◽  
Production Model ◽  
Sustainable Yield ◽  
Skipjack Tuna ◽  
Katsuwonus Pelamis ◽  
Surplus Production ◽  
Fish Resources ◽  
Yield Value ◽  
Surplus Production Model

Skipjack tuna (Katsuwonus pelamis), should be managed properly because even though it is renewable, natural resources can be depleted. One approach in managing fish resources is by modeling. The purpose of this study is to determine the maximum sustainable yield, the level of utilization and effort of skipjack tuna. Data on catches as well as catch efforts of skipjack tuna were collected from 9 fisheries year books of Luwu Kabupaten (District). The surplus production model used is the Schaefer, Fox, Walter & Hilborn model. Schaefer model obtained by MSY = 1541.08 tons and Fopt = 243 trips; Fox model obtained maximum sustainable yield value (YMSY) of 1602,244 tons, maximum sustainable fishing effort (fMSY) of 303 units and maximum sustainable CpUE value (UMSY) of 5.29 tons trip-1; the Walter & Hilborn model found potential stocks of sustainable reserves (Be) skipjack in Luwu district amounted to 935.72 tons year-1. Utilization rates of the skpjack tuina indicate the fish is still under exploitation.

scholarly journals The Length-Weight Relationship of Metapenaeopsis mogiensis in North Aceh Waters, Indonesia

2020 ◽  
Vol 151 ◽  
pp. 01050
Author(s):  
Abdullah A. Muhammadar ◽  
Dedi F. Putra ◽  
Maria Ulfa ◽  
Zulfahmi Zulfahmi ◽  
Muhammad A. Sarong
Keyword(s):  
Resource Management ◽  
Research Method ◽  
Growth Patterns ◽  
High Protein ◽  
Total Catch ◽  
Sustainable Resource Management ◽  
Additional Information ◽  
Weight Relationship ◽  
The People ◽  
Relationship Of

Shrimp as one of potential commodity which has a high protein and savory flavor of meat is highly favored by the people in the country and abroad. The catch activity of the Metapenaeopsis mogiensis shrimp by the fisherman in Pusong Lama, Lhoksemawe has long been a livelihood. However, if the shrimp catching activity was carried out continuously without any restrictions, it can threaten the sustainability of the shrimp. The purpose of this study was to determine the lenght-weight relationship of shrimp caught in the waters of Aceh Utara, Indonesia. This research was expected to provide additional information on the existence of Metapenaeus mogiensis shrimp and future sustainable resource management for farmers. The research method used was a simple random withdrawal method by taking shrimp samples randomly from a basket of fishermen's catch in one sail. A total of 10% shrimp samples of the total catch of fishermen was taken, then length was measured and weighed. Sampling was carried out in July2019 at TPI Pusong lama, Lhoksemawe. The length of carapace of male shrimp ranges from 14.8 mm to 22.2 mm and females 13.9 mm to 22.1 mm.The weight of male shrimp ranges from 2.17 grams to 6.73 grams and the weight of female shrimp ranges from 2.01 grams to 5.83 grams. Growth patterns found in both males and femalesshowed allometric negatives and the ratio of sex was 1.5: 1 (male:female).

Sign in / Sign up

Export Citation Format

Share Document