scholarly journals POLA PERTUMBUHAN DAN FAKTOR KONDISI TONGKOL KOMO, Euthynnus affinis (Cantor, 1849) DI PERAIRAN TANJUNG LUAR NUSA TENGGARA BARAT

2019 ◽  
Vol 10 (3) ◽  
pp. 179
Author(s):  
Maya Agustina ◽  
Irwan Jatmiko ◽  
Ririk Kartika Sulistyaningsih
Keyword(s):  
Growth Pattern ◽  
Condition Factor ◽  
Purse Seine ◽  
Small Scale ◽  
Adult Fish ◽  
Small Scale Fisheries ◽  
Relative Condition Factor ◽  
Length Increase ◽  
Euthynnus Affinis ◽  
Small Size Group

Tongkol komo (Euthynnus affinis Cantor, 1849) merupakan salah satu hasil tangkapan yang cukup penting bagi perikanan skala kecil di Tanjung Luar, Nusa Tenggara Barat. Spesies ini masuk ke dalam kelompok tuna neritik yang sebagian besar diusahakan dengan menggunakan alat tangkap purse seine dan gillnet. Penelitian ini bertujuan untuk mengetahui pola pertumbuhan dan faktor kondisi tongkol komo. Pengumpulan data dilakukan selama 12 bulan dari Januari – Desember 2016 di PPI Tanjung Luar, Nusa Tenggara Barat. Pengambilan data bulanan secara berkesinambungan dilakukan dengan bantuan tenaga enumerator. Data sebanyak 1.297 spesimen komo telah diukur panjang cagak (cmFL) dan ditimbang beratnya (kg). Hasil pengukuran menunjukkan sebaran panjang berkisar antara 24 – 71 cmFL, dengan rata-rata 51,66 cmFL dan berat 0,21 – 7,05 kg, dengan rata-rata 2,72 kg. Analisis hubungan panjang berat diperoleh hasil W= 0,00001 FL3,114 dengan koefisien determinasi (R2) 0,978. Pola pertumbuhan bersifat alometrik positif (b>3) menunjukkan bahwa pertambahan berat lebih cepat daripada pertambahan panjangnya. Faktor kondisi relatif (Kn) tertinggi terjadi pada batas atas kelas panjang 45 cm sebesar 1,187 dan terendah terjadi pada batas atas kelas panjang 30 cm sebesar 0,940. Faktor kondisi relatif bulanan cenderung stabil dengan nilai tertinggi terjadi pada bulan November sebesar 1,140 dan terendah pada bulan Maret sebesar 1,033 dan cenderung berfluktuasi pada ikan-ikan berukuran kecil, sedangkan pada ikan berukuran dewasa menunjukkan tren yang menurun seiring dengan bertambahnya ukuran panjang.Kawakawa (Euthynnus affinis Cantor, 1849) one of the important catch for small-scale fisheries in Tanjung Luar, West Nusa Tenggara. This species is included in neritic tuna group that mostly utilized by using purse seine and gillnet. The objectives of this research are to investigate the growth pattern and condition factor of this particular species. Data collection was conducted for 12 months from January to December 2016 in Tanjung Luar Port, West Nusa Tenggara. Data were collected in twelve consecutive months by enumerators. Total of 1,297 specimens were collected, measured (cmFL) and weighted (kg). The measurements showed that the length of ranged from 24-71 cmFL with average of 51.66 cmFL. The weight ranged from 0.21-7.05 kg with average of 2.72 kg. Analysis of length-weight relationships was W=0.00001 FL3.114 with determination coefficient (R2) 0.978. Growth pattern of positive allometric (b>3) where the additional of weight proceeded faster than the of length increments. The highest relative condition factor (Kn) occurred at upper limit of length class 45 cm with 1.187 and the lowest at 30 cmFL with 0.940. Monthly relative condition factor tends to stable with the highest value occurred on November with 1.140 and the lowest on March with 1.033 and tend to fluctuated for small size group. While for adult fish tend to decrease along with the length increase.

Growth aspect of squid (Loligo chinensis) from the Banyuasin Coastal Waters, South Sumatra, Indonesia

2020 ◽  
Vol 27 ◽  
pp. 1-10
Author(s):  
Fauziyah . ◽  
Anna I.S. Purwiyanto ◽  
Fitri Agustriani ◽  
Wike A.E. Putri
Keyword(s):  
Coastal Waters ◽  
Growth Pattern ◽  
Condition Factor ◽  
Critical Value ◽  
Small Scale ◽  
Environmental Condition ◽  
Small Scale Fisheries ◽  
Relative Condition Factor ◽  
The Mean ◽  
First Maturity

Squid (Loligo chinensis) played an important role in small scale fisheries in Banyuasin Coastal Waters, however, the information and publications were limited. This study aimed to estimate the length at first capture (LC50%), the length at first maturity (Lm), growth pattern and condition factor of L. chinensis from Banyuasin Coastal Waters of South Sumatra. The squids were observed for samples in April 2018 and March 2019 using a stationary lift net. During the observation, the squid measurement was conducted on 1179 individuals. The mantle length ranged was 40-210 mm and their body weight ranged was 2-42 gr. The value of LC50%, Lm and ½L∞ were obtained at 103 mm, 147 mm, and 110.5 mm respectively. The analysis results of the length-weight relationship (W = 0.0145L1.4618, R2 = 0.9265 and P < 0.05) showed that their growth pattern was negative allometric (b < 3).  The mean relative condition factor (Kn = 1.01) above the critical value limits (K=0.56) confirmed that the environmental condition of Banyuasin Coastal Waters suitable for the L. chinensis growth. However, should be careful with their length size of the squid catch were not feasible in the capture.

scholarly journals CPUE STANDARDIZATION OF FRIGATE TUNA (Auxis thazard) CAUGHT BY PURSE SEINE OFF THE COAST OF WESTERN SUMATERA (FMA 572)

2020 ◽  
Vol 26 (1) ◽  
pp. 11
Author(s):  
Ririk Kartika Sulistyaningsih ◽  
Irwan Jatmiko ◽  
Maya Agustina
Keyword(s):  
Landing Site ◽  
Purse Seine ◽  
Fishing Ground ◽  
Small Scale ◽  
Fleet Size ◽  
Small Scale Fisheries ◽  
Preliminary Examination ◽  
Auxis Thazard ◽  
Euthynnus Affinis ◽  
Coordinate Data

Frigate tuna (Auxis thazard) is one of the major commercial tuna species, both in industrial and small scale fisheries, particularly in the waters off Western Sumatera. In Indonesia, A. thazard is a group of locally called “tongkol” together with A. rochei, Thunnus tonggol, and Euthynnus affinis. This study describes a preliminary examination of frigate tuna catch from purse seine off the coast of western Sumatera (FMA 572). The data were collected daily by an enumerator on the fish landing site from 2013 to 2017, including fishing gear, number of days at sea, catch, length, and weight of frigate tuna. The fishing ground coordinate data provided by the observer on board the vessel. General Linear Model (GLM) with gamma was applied in this study to standardize the CPUE by year, quarter, season, and GT as fixed variables. The results showed that the variation of CPUE was mostly influenced by year and quarter, while season and fleet size (GT) showed less impact on the catch. In general, even though the catch trend declines during the observation years, the population of frigate tuna off the coast of western Sumatera (FMA 572) were considered sustainable.

scholarly journals Pola pertumbuhan dan faktor kondisi madidihang, Thunnus albacares (Bonnaterre, 1788) di Samudra Hindia Bagian Timur

2018 ◽  
Vol 18 (1) ◽  
pp. 13
Author(s):  
Suciadi Catur Nugroho ◽  
Irwan Jatmiko ◽  
Arief Wujdi
Keyword(s):  
Indian Ocean ◽  
Growth Pattern ◽  
Condition Factor ◽  
Yellowfin Tuna ◽  
Growth Patterns ◽  
Thunnus Albacares ◽  
Relative Condition Factor ◽  
Length Increase ◽  
Fish Samples ◽  
One Year

Yellowfin tuna, Thunnus albacares (Bonnaterre, 1788) is one of the important economically for tuna species that spread in Indonesian waters, including in WPP 572 (Indian Ocean west coast of Sumatra). One important aspect relating to sustainable utilization is the growth pattern and the condition factor. This study aims to examine growth patterns and factor conditions of yellowfin tuna in the Eastern Indian Ocean. The number of fish samples measured in length and weight is 7,550 with length range from 76-176 cm (average: 129.03 cm) and mode at 150 cm. The length weight relationship of the species is W=4x10-5L2.842 (R2 0,957). In general the growth pattern of yellowfin tuna is negative allometric which means that the length increase is faster than the weight. The average relative condition factor of yellowfin tuna is 0.975 with a tendency to decrease along with the increasing of its length. The highest relative condition factor occurred at the length class of 80 cm with 1,061 and the lowest occurred at length 170 cm with 0.918. The monthly relative condition factor generally increased twice in one year from February to June and from July to December. AbstrakTuna madidihang, Thunnus albacares (Bonnaterre,1788), merupakan salah satu spesies tuna ekonomis penting dan ter-sebar di perairan Indonesia, termasuk di WPP 572 (Samudra Hindia bagian barat Sumatera). Salah satu aspek penting yang berkaitan dengan upaya pemanfaatan berkelanjutan adalah pola pertumbuhan dan faktor kondisi. Penelitian ini bertujuan untuk mengkaji pola pertumbuhan dan faktor kondisi ikan madidihang di Samudra Hindia Bagian Timur. Jumlah ikan contoh yang diukur panjang dan bobotnya adalah 7.550 ekor yang mempunyai sebaran panjang 76-176 cm (rata-rata 129,03 cm) dan modus 150 cm. Hubungan panjang bobot ikan tersebut adalah W = 4x10-5L2,842 (R2 0,957). Secara umum pola pertumbuhan madidihang bersifat allometrik negatif yang berarti bahwa pertambahan panjang lebih cepat daripada bobotnya. Faktor kondisi relatif rata-rata madidihang adalah 0,975 dengan kecenderungan menurun seiring bertambahnya ukuran panjang. Faktor kondisi relatif tertinggi terjadi pada kelas panjang 80 cm sebesar 1,061 dan terendah terjadi pada kelas panjang 170 cm sebesar 0,918. Faktor kondisi relatif bulanan secara umum mengalami dua kali peningkatan dalam satu tahun yaitu dari bulan Februari hingga Juni dan dari Bulan Juli hingga Desember.

scholarly journals Length-weight relationship and condition factor of tropical sand goby, Acentrogobius caninus (Valenciennes 1837) from Pabean Bay, West Java, Indonesia

2021 ◽  
Vol 322 ◽  
pp. 01021
Author(s):  
Lenny S. Syafei
Keyword(s):  
Growth Pattern ◽  
Condition Factor ◽  
Sand Goby ◽  
West Java ◽  
Weight Relationship ◽  
Relative Condition Factor

This study aims to determine the length-weight relationship (LWR) and evaluate the condition factors of the tropical sand goby, Acentrogobius caninus (Valenciennes 1837), in Pabean Bay West Java, Indonesia. The sampling was carried out once a month from January to December 2015, and during that period, 152 samples were collected. The LWR is W = 9 x 10-6 L-3.0356. The growth pattern of tropical sand goby is isometric (b=3). The monthly relative condition factor ranged from 0.798 to 1.322 (average: 1.028).

scholarly journals DISTRIBUSI UKURAN IKAN TERI (Stolephorus sp) YANG DITANGKAP PADA PERIKANAN BAGAN TANCAP DI MUARA SUNGSANG SUMATERA SELATAN (Size Distribution of Anchovy (Stolephorus sp.) Caught in Stationary Liftnets at Sungsang Estuary South Sumatera)

2016 ◽  
Vol 7 (2) ◽  
pp. 161
Author(s):  
. Fauziyah ◽  
. Hadi ◽  
Khairul Saleh ◽  
Freddy Supriyadi
Keyword(s):  
Frequency Distribution ◽  
Growth Pattern ◽  
Growth Form ◽  
Condition Factor ◽  
Size Structure ◽  
Length Frequency Distribution ◽  
Fishing Pressure ◽  
Length Frequency ◽  
Relative Condition Factor ◽  
Factor Frequency

<p><strong>ABSTRACT<br /> </strong><br />The anchovy  (Stolephorus sp.)  in  Muara  Sungsang  estuary South Sumatera  are  generally caught by stationary liftnet. Morphometric studies are essential to determine the growth form and growth rate of species, which is  very much important for proper  utilization  and management of the population of the species. This study aimed to determine the size structure and growth pattern of the  anchovy  caught  by  stationary  liftnet.  The   size  structure,  length -weight  relationship  and  the condition factor  of  anchovy were computed.  The anchovy samples were taken  in July 2013 (750 samples) and September 2013 (1950 samples).    Results  showed  that the population of anchovy was  dominated by length frequency distribution  of  65 mm during study on July 2013 and 75 mm during  study  on  September  2013.  Both  populations  were  dominated  by  weight  frequency distribution 2 gram.  The anchovy that caught on September 2013 were more allowable catch than on July 2013. The growth pattern of anchovy was negative allometric. The relative condition factor (Kn)  value  in  September  2013  was  higher  than  in  July  2013.  It  indicated  that  the  environmental conditions  at  Muara  Sungsang  estuary  are  suitable  for  growth  of  anchovy’s  and  still  safe  from fishing pressure.</p><p>Keywords: allometric, anchovy, condition factor, frequency distribution</p><p> <strong><br />ABSTRAK</strong></p><p>Ikan  Teri  (Stolephorus  sp.)  di  Muara  Sungsang  Sumatera  Selatan  umumnya  ditangkap menggunakan bagan tancap. Studi morfometrik berguna untuk menentukan bentuk pertumbuhan dan laju pertumbuhan spesies. Hal ini berguna untuk manajemen populasi dan sebagai informasi tentang stok atau kondisi organisme. Disamping itu, sebagai dasar dalam upaya pengelolaan dan pemanfaatan  ikan  teri  di  masa  akan  datang.  Penelitian  ini  bertujuan  untuk  mengetahui  struktur ukuran dan pola pertumbuhan ikan teri hasil tangkapan bagan tancap. Data ikan teri didapatkan pada  bulan  Juli  2013  (750  sampel)  dan  September  2013  (1950  sampel).  Hasil  penelitian menunjukkan bahwa populasi ikan teri didominasi oleh distribusi frekuensi panjang 65 mm pada bulan Juli 2013 dan 75 mm pada bulan September 2013. Distribusi frekuensi berat teri pada kedua bulan tersebut sama yaitu 2 gram. Penangkapan ikan teri pada bulan September 2013 lebih layak tangkap  dibandingkan  pada  bulan  Juli  2013.  Pertumbuhan  ikan  teri  bersifat  negative  allometric. Nilai Faktor kondisi (Kn) pada bulan September 2013 lebih tinggi daripada bulan Juli 2013. Hal ini mengindikasikan bahwa kondisi  lingkungan Muara Sungsang cocok untuk pertumbuhan ikan teri dan masih aman dari tekanan aktivitas penangkapan.</p><p>Kata kunci: allometrik, teri, faktor kondisi,distribusi frekuensi</p>

scholarly journals ESTIMATION OF YELLOWFIN TUNA PRODUCTION LANDED IN BENOA PORT WITH WEIGHT-WEIGHT, LENGTH-WEIGHT RELATIONSHIPS AND CONDITION FACTOR APPROACHES

2017 ◽  
Vol 22 (2) ◽  
pp. 77 ◽  
Author(s):  
Irwan Jatmiko ◽  
Hety Hartaty ◽  
Budi Nugraha
Keyword(s):  
Condition Factor ◽  
Linear Regression Analysis ◽  
Fork Length ◽  
Yellowfin Tuna ◽  
Weight Relationship ◽  
Relative Condition Factor ◽  
Linear Relationships ◽  
Length Increase ◽  
Landing Sites ◽  
The Relationship

Yellowfin tuna (Thunnus albacares) is one of the important catch for the fishing industry in Indonesia. Length-weight relationship study is one of important tools to support fisheries management. However it could not be done to yellowfin tuna landed in Benoa port since they are in the form of gilled-gutted condition. The objectives of this study are to determine the relationship between gilled-gutted weight (GW) and whole weight (WW), to calculate length weight relationship between fork length (FL) and estimated whole weight (WW) and to assess the relative condition factor (Kn) of yellowfin tuna in Eastern Indian Ocean. Data were collected from three landing sites i.e. Malang, East Java; Benoa, Bali and Kupang, East Nusa Tenggara from January 2013 to February 2014. Linear regression analysis applied to test the significance baseline between weight-weight relationships and log transformed length weight relationship. Relative condition factor (Kn) used to identify fish condition among length groups and months. The results showed a significant positive linear relationships between whole weight (WW) and gilled-gutted weight (GW) of T. albacares (p<0.001). There was a significant positive linier relationships between log transformed fork length and log transformed whole weight of T. albacares (p<0.001). Relative condition factor (Kn) showed declining pattern along with length increase and varied among months. The findings from this study provide data for management of yellowfin tuna stock and population.

scholarly journals Weight-Length and Condition Factor of Snakehead Fish Channa striata (Bloch, 1793) from Tondano Lake North Sulawesi

2019 ◽  
Vol 10 (1) ◽  
pp. 6
Author(s):  
Musa Amanpokptis ◽  
John L. Tombokan ◽  
Nego Elvis Bataragoa ◽  
Fransine B. Manginsela
Keyword(s):  
Growth Pattern ◽  
Condition Factor ◽  
Marine Science ◽  
Data Recording ◽  
North Sulawesi ◽  
Relative Condition Factor ◽  
Length Relationship ◽  
Fish Weight ◽  
Channa Striata

Sampling was done in two places, Tolour village and Kaweng village. Samples were taken from fishermen in July and August 2018. Total samples collected were 35 individuals, 20 indivduals from Tolour and 15 from Kaweng. Furthermore, the fish were brought the Faculty of Fisheries and Marine Science, and data recording was in the Freshwater Bioecology Laboratory. They consisted of 16 males and 19 females. Male length ranged from 25.8 to 43.2 cm, and female from 22.0 to 39.6 cm. The weight of males ranged from 157-755 g and female between 38-422g.Weight-length relationship in this study was W = 0.0017L3.4517 for sex combination, W = 0.0116L2.9161 for males and W = 0.0009L3,6426 for females. The growth pattern for combied sex was isometric (b = 3.457). The growth pattern was isometric (b = 2.9161) for male and allometric positive (b = 3.6426) for females. The relative condition factor (Kn) of all individuals was 1.06 ± 0.44, 1.01 ± 0.13 for males and 1.01 ± 0.58 for femaleKey Words: Tondano Lake, Snakehead Fish, Weight-length, condition factor ABSTRAKPengambilan sampel dilakukan di dua tempat yaitu, Kelurahan Tolour Kecamatan Tondano Timur dan Desa Kaweng Kecamatan  Kakas. Sampel diambil dari hasil tangkapan nelayan pada Bulan Juli dan  Agustus 2018. Sampel yang terkumpul  sebanyak 35 ekor, 20 sampel dari Tolour dan 15 dari Kaweng. Selanjutnya ikan dibawah ke Laboraturium Bioekologi Air Tawar  FPIK untuk pengambilan data. Sampel yang digunakan sebanyak 35 individu yang terdiri atas jenis kelamin jantan 16 individu dan betina 19 individu. Ukuran panjang ikan jantan berkisar antara 25,8-43,2 cm, dan ikan betina berkisar antara 22,0-39,6 cm.  Ukuran berat ikan jantan berkisar antara 157-755 g dan ikan betina beratnya berkisar antara 38-422g. Hubungan panjang berat ikan gabus dalam penelitian ini adalah W= 0,0017L3,4517 untuk gabungan jantan betina, W = 0,0116L2,9161 untuk jenis kelamin jantan  dan W = 0,0009L3,6426 untuk jenis kelamin betina.  Pola pertumbuhan untuk gabungan jantan dan betina adalah isometric (b=3,457).  Pola pertumbuhan ikan gabus adalah pola pertumbuhan isometrik (b=2,9161)   untuk jantan dan allometrik positif (b=3,6426) untuk jenis kelamin betina. Faktor kondisi relative (Kn) seluruh individu adalah 1,06  ± 0,44. Faktor Kondisi  jantan adalah 1,01 ± 0,13. Jenis kelamin betina faktor kondisi adalah 1,01 ± 0,58.Kata kunci: Tondano, ikan gabus, berat-panjag, factor kondisi

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