Size composition and length-weight relationships of the Yellowfin Tuna (Thunnus albacares) in Bone Bay

The size composition, length-weight relationship, and condition factor of Thunnus albacares were examined in Bone Bay. Sampling was conducted at two stations, i.e., Station I at Cimpu in Luwu Regency and Station II at Lonrae in Bone Regency between July 2018 and June 2019. 10246 and 2651 yellowfin tunas were captured in Station I and Station II, respectively. Measurement of the fork length ranged between 20 cm and 192 cm with an average length of 81,257 ± 33,456 cm in Station I, and between 26 to 162 cm with an average length of 95,479 cm in Station II. The weight measurement ranged between 0,35 and 99,21 kg with an average of 14,539 kg in Station I, and between 0,46 and 97,35 kg with an average of 26,978 kg in Station II. Calculation of the relationship was based on the formula W= 5,5−5FL2,7454 (R2 = 0,963) in Station I, and W=4,1−5FL2,9103 (R2 = 0,761) in Station II. The values of condition factor at Station I and Station II were 2,1395 and 3,4374, respectively. It is quite evident that the growth pattern of the yellowfin tunas at Bone Bay was negatively allometric, indicating that the length increased faster than the weight.

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Hubungan Panjang - Berat, Faktor Kondisi dan Ukuran Pertama Kali Tertangkap Ikan Tuna Sirip Kuning (Thunnus Albacares) di Pelabuhan Perikanan Samudra Cilacap Length - Weight Relationship, Condition Factors and Legth of The First Time Caught of Yellowfin Tuna (Thunnus albacares) in Cilacap Ocean Fishing Port

Management of Aquatic Resources Journal (MAQUARES) ◽

10.14710/marj.v9i2.27764 ◽

2020 ◽

Vol 9 (2) ◽

pp. 90-96

Author(s):

Nurul Amin Azizi ◽

Suradi Wijaya Saputra ◽

Abdul Ghofar

Keyword(s):

Sampling Method ◽

Condition Factor ◽

Size Structure ◽

Fork Length ◽

Yellowfin Tuna ◽

Thunnus Albacares ◽

Weight Relationship ◽

Measurement Results ◽

The Indian Ocean ◽

First Time

ABSTRAK Ikan Tuna Sirip Kuning (Thunnus albacares) yang ditangkap di Samudera Hindia merupakan komoditas penting karena memiliki nilai manfaat dan ekonomis yang tinggi. Berdasarkan hal tersebut, perlu dilakukan penelitian mengenai parameter yang mempengaruhi populasi tuna sirip kuning. Penelitian ini bertujuan untuk mengetahui struktur ukuran, hubungan panjang dan berat, faktor kondisi serta ukuran pertama kali tertangkap. Penelitian ini dilakukan pada bulan Juli-Agustus 2019 di Pelabuhan Perikanan Samudera Cilacap. Jumlah sampel tuna sirip kuning sebanyak 267 ekor dari 27 kapal yang melakukan bongkar di lokasi penelitian. Metode pengambilan sampel adalah dengan mengukur panjang dan berat. Hasil pengukuran yang diperoleh kemudian dilakukan analisis statistik dengan melakukan perhitungan dan hipotesis. Sampel ikan yang digunakan dalam penelitian ini yaitu ikan tuna sirip kuning dengan ukuran >0,5 meter dan berat >15 kilogram. Sampel kapal merupakan kapal tuna longline dengan ukuran >10 GT (Gross Tonage). Hasil penelitian didapatkan ukuran panjang antara 88-174 cmFL (panjang cagak) dan berat antara 17-98 kilogram. Hubungan panjang dan berat bersifat allometrik negatif. Faktor kondisi diperoleh sebesar 0,97-1,25. Ukuran pertama kali tertangkap (Lc) sebesar 140 cmFL. Lc>Lm, menunjukan ikan tuna sirip kuning yang tertangkap sudah pernah memijah dan diperbolehkan ditangkap. ABSTRACT Yellowfin Tuna (Thunnus albacares) caught in the Indian Ocean is an important commodity because it has high economic and benefits. Based on this, research needs to be done on the parameters that affect yellow fin tuna population. This study aims to determine the size structure, length and weight relationship, condition factors and the leght of the first time caught. This research was conducted in July-August 2019 at the Cilacap Ocean Fishing Port. The number of yellowfin tuna samples was 267 from 27 ships unloading at the study site. The sampling method is by measuring length and weight. The measurement results obtained are then carried out statistical analysis by doing calculations and hypotheses. Yellow fin tuna samples>> 0.5 meters in size and> 15 kilograms in weight. The sample ship is a longline tuna ship with size> 10 GT (Gross Tonage). The results showed a length of between 88-174 cmFL (fork length) and a weight of 17-98 kilograms. The length and weight relationship is negative allometric. The condition factor is obtained from 0.97 to 1.25. Length of first catch (Lc) was 140 cmFL. Lc> Lm, indicating that yellowfin tuna caught have spawned and are allowed to be caught.

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

Indonesian Fisheries Research Journal ◽

10.15578/ifrj.22.2.2016.77-84 ◽

2017 ◽

Vol 22 (2) ◽

pp. 77 ◽

Cited By ~ 2

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.

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HASIL TANGKAPAN IKAN MADIDIHANG (Thunnus albacares) DI SAMUDERA HINDIA BERDASARKAN HASIL TANGKAPAN YANG DIDARATKAN DI PELABUHAN BENOA, BALI

Management of Aquatic Resources Journal (MAQUARES) ◽

10.14710/marj.v5i4.14641 ◽

2017 ◽

Vol 5 (4) ◽

pp. 406-411

Author(s):

Krisliyana Mia Anggarini ◽

Suradi Wijaya Saputra ◽

Abdul Ghofar ◽

Bram Setyadji

Keyword(s):

Indian Ocean ◽

Data Processing ◽

Growth Pattern ◽

Condition Factor ◽

Yellowfin Tuna ◽

Survey Method ◽

Thunnus Albacares ◽

Microsoft Excel ◽

Weight Relationship ◽

The Indian Ocean

ABSTRAK Produksi ikan Madidihang yang cenderung menurun yang disebabkan oleh penangkapan yang berlebih dikhawatirkan dapat mengganggu kelestarian sumberdaya ikan Madidihang. Oleh sebab itu perlu adanya penelitian tentang hasil tangkapan ikan Madidihang. Hasil yang didapatkan dari penelitian diharapkan dapat memberi gambaran tentang kondisi ikan Madidihang di Samudera Hindia. Penelitian dilakukan pada bulan April-Mei 2016 di Pelabuhan Benoa. Penelitian ini bertujuan untuk mengetahui kondisi ikan madidihang melalui telaah panjang-bobot, faktor kondisi, ukuran pertama kali tertangkap, panjang asimtotik (L∞) ikan Madidihang di Samudera Hindia berdasarkan hasil tangkapan yang didaratkan di Pelabuhan Benoa, Bali. Metode yang digunakan yaitu metode survei. Pengolahan data menggunakan perangkat lunak microsoft excel. Hasil penelitian menunjukkan ukuran ikan Madidihang bulan April-Mei 2016 berkisar 70 – 178 dengan modus 112 cmFL. Persamaan hubungan panjang-bobot didapatkan W = 0,00002*FL2,966 dengan pola pertumbuhan isometrik. Faktor kondisi yang didapatkan antara 1,64 – 2,44, dan ukuran ikan pertama kali tertangkap 133 cmFL. Panjang asimtotik (L∞) = 190,05 cmFL. Berdasarkan ukuran ikan yang tertangkap dimana Lc > ½ L∞ dapat dinyatakan bahwa ukuran yang tertangkap telah layak tangkap. Kata Kunci : Ikan madidihang; hubungan panjang-bobot, faktor kondisi, ukuran pertama kali tertangkap ABSTRACT Yellowfin tuna production tends to decrease due to excess catching that is feared could interfere with the preservation of resources yellowfin tuna. Hence, it is necessary to do this research Catch Product of Yellowfin Tuna. Results obtained from the study are expected to give an idea of yellowfin condition in the Indian Ocean. This research was conducted in April-May 2016 at the Benoa Port. The aimed of this research was to determine condition of yellowfin tuna through the study of the length-weight relationship,condition factor, length at first capture, and asymptotic length (L∞) of yellowfin tuna in the Indian Ocean based on catches landed at the port of Benoa, Bali. This research used survey method. Data processing used the software of Microsoft Excel and FISAT II. The results have shown the size of the yellowfin tuna from April-May 2016 ranging from 70 – 178 with 112 cmFL. The equation of length weights correlation was obtained W = 0.00002*FL2,966 with isometric growth pattern. The condition factor obtained was between 1.64 to 2.44, and the size of the first caught fish is 133 cmFL. Asymptotic length (L∞) = 190.05 cmFL. Based on the size of fish caught where Lc > ½ L∞ can be stated that the size of which was caught had a decent catch. Keywords: Yellowfin Tuna; length-weight relationship; condition factor, length at first capture

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Length-weight relationship and relative condition factor of yellowfin tuna (Thunnus albacares) from Parangipettai coast, southeast coast of India

Zoology and Ecology ◽

10.1080/21658005.2018.1455319 ◽

2018 ◽

Vol 28 (2) ◽

pp. 94-99

Author(s):

Mariasingarayan Yosuva ◽

Danaraj Jeyapragash ◽

Vajravelu Manigandan ◽

Mayakrishnan Machendiranathan ◽

Ayyappan Saravanakumar

Keyword(s):

Condition Factor ◽

Yellowfin Tuna ◽

Thunnus Albacares ◽

Southeast Coast Of India ◽

Weight Relationship ◽

Relative Condition Factor ◽

Southeast Coast

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Study of some biological aspects of the Nile Carp, Labeo niloticus (Pisces, Cyprinidae) from Khashm El-Girba Reservoir and Atbara River; Eastern Sudan: II, length-weight relationship, condition factor and age structure

Global Journal of Fisheries Science ◽

10.31248/gjfs2021.024 ◽

2021 ◽

Vol 3 (2) ◽

pp. 7-14

Author(s):

Mutasim Yousif Mohamed Abdalla ◽

◽

Abuelgasim Ibrahim Abdelhalim ◽

Ahmed El Bedawi Adam ◽

◽

...

Keyword(s):

Age Structure ◽

Growth Pattern ◽

Condition Factor ◽

Allometric Growth ◽

Beach Seine ◽

Weight Relationship ◽

Biological Aspects ◽

The Mean ◽

The Relationship ◽

Eastern Sudan

This study was undertaken to assess the length-weight relationship, condition factor and age structure, of the Nile carp, Labeo niloticus, in Khashm El-Girba reservoir and Atbara River, Sudan, from December 2015 to November 2016. Samples of fish were collected bi-monthly from three locations, namely; Um Aswad (Atbara River), El-Remila and El-Monaba (Khashm El-Girba reservoir), using beach seine nets of 1.2, 4.0 and 7.0 cm stretched mesh. Out of a total number of 1,190 specimens of L. niloticus collected from the three sampling sites, 189 specimens were randomly selected to determine age. The relationship between length and weight indicated negative allometric growth pattern in all three locations, where the slope (b) of the (LWR) was highly significant (p<0.001) and ranged from 2.178 to 2.885. The mean condition factor (K) varied monthly in the three locations with values ranging from 1.671 in Um Aswad (Atbara River) to 2.548 in El-Monaba (reservoir). Although the age of L. niloticus ranged from 0+ and 3+ years, yet, most of the studied fish are between age 0 + and 1+.

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Length-weight relationship and condition factor of Hamilton's thryssa fish (Thryssa hamiltonii) from Pabean Bay, West Java, Indonesia

E3S Web of Conferences ◽

10.1051/e3sconf/202132201001 ◽

2021 ◽

Vol 322 ◽

pp. 01001

Author(s):

Ade Sunaryo

Keyword(s):

Growth Pattern ◽

Field Survey ◽

Condition Factor ◽

Fish Growth ◽

West Java ◽

Research Results ◽

Weight Relationship ◽

Fish Samples ◽

Body Weights ◽

The Relationship

The length-weight and condition factor can be used as an indicator of the condition for fish growth and to determine the suitability of the environment. The research objective was to evaluate the relationship between length-weight and condition factor of Hamilton's thryssa fish (Thryssa hamiltonii) from Pabean Bay West Java Indonesia. The researchers have been carried out to analyze the two essential parameters: the lengthweight relationship that can be used to evaluate and investigate stock density and condition factor of Hamilton's thryssa fish (Thryssa hamiltonii). A total of 195 fish samples were collected over the 8th month from the sea estuary and measured and weighed during a field survey conducted from April to December 2015. Samples of fish were collected using gillnet and set net. The total length of the fish ranged from 47-186 mm, with body weights ranging from 0.47 - 45.37 g. The results of the length-weight relationship were shown as regression was Y = 7E-07 X3.4339 or W = 7.45 x 10−7.L3.43389, and the condition factors ranged from 0.77 to 1.39. These research results indicated that the growth pattern of Hamilton's Thryssa fish (Thryssa hamiltonii) was positive allometric.

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

Jurnal Iktiologi Indonesia ◽

10.32491/jii.v18i1.371 ◽

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.

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Morphoregression and length-weight relationship of Bali sardinella, Sardinella lemuru Bleeker 1853 in Bali Strait Waters

Jurnal Iktiologi Indonesia ◽

10.32491/jii.v18i3.425 ◽

2019 ◽

Vol 18 (3) ◽

pp. 275

Author(s):

Nyoman Dati Pertami ◽

M.F. Rahardjo ◽

Ario Damar ◽

I.W. Nurjaya

Keyword(s):

Standard Length ◽

Average Length ◽

Economic Value ◽

Fork Length ◽

Growth Patterns ◽

Length Measurement ◽

Weight Relationship ◽

Total Length ◽

Relationship Of ◽

The Relationship

Bali Sardinella, Sardinella lemuru Bleeker 1853, included in small pelagic groups which have an important economic value. The production of Bali Sardinella was the highest among the other small pelagic fish in Bali Strait waters. The morphoregression and length-weight relationship are important to be known to facilitate the conversion between a length measurement to another type of length measurement and the weight. The aims of this research were to reveal the relationship between total length (TL) and standard length (SL), total length and fork length (FL), fork length and standard length, and the length-weight. The research was held in Bali Strait waters from March 2017 – Mei 2018. The morphoregression was analyzed using simple linear regression, whereas the length-weight relationship using power regression. A total of 470 individuals of Bali sardinella were collected during the study period. The fish that analyzed have a length range 9.7 –20.2 cm TL. The average length of Bali sardinella was13.7 cm. The relationship between total length (TL) and standard length (SL); total length (TL) and fork length (FL); fork length (FL) and standard length (SL) for Bali sardinella respectively were TL = 1.1038SL + 0.9313; TL = 1.0861FL + 0.2967; and FL = 1.0068SL + 0.6936, respectively. The value of b which were generated from the length-weight relationship of Bali Sardinella was 3.22 with the growth patterns were positive allometric.AbstrakIkan lemuru, Sardinella lemuru Bleeker 1853, termasuk dalam kelompok ikan pelagis kecil yang bernilai ekonomis tinggi. Dibandingkan dengan jenis pelagis kecil lainnya, hasil tangkapan ikan lemuru lebih dominan di perairan Selat Bali. Persamaan morforegresi dan hubungan panjang bobot penting untuk diketahui sehingga mudah melakukan kon-versi dari satu jenis panjang ke jenis panjang lain dan bobotnya. Penelitian ini bertujuan untuk mengungkap hubungan antara panjang total (PT) dengan panjang baku (PB), panjang total dengan panjang cagak (PC), panjang cagak dengan panjang baku, serta hubungan panjang bobot ikan lemuru. Penelitian dilaksanakan di perairan Selat Bali kurun waktu Maret 2017 – Mei 2018. Morforegresi dianalisis menggunakan regresi linear sederhana, sedangkan hubungan panjang bobot dianalisis menggunakan regresi power. Ikan lemuru (Sardinella lemuru Bleeker 1853) yang dikumpulkan selama penelitian berjumlah 470 ekor. Ikan yang dianalisis memiliki kisaran panjang antara 9,7 – 20,2 cm PT. Panjang rata-rata ikan lemuru adalah 13,7 cm. Hubungan antara panjang total (PT) dan panjang baku (PB); panjang total (PT) dan pan-jang cagak (PC); panjang cagak (PC) dan panjang baku (PB) ikan lemuru secara berturut-turut adalah PT = 1,1038 PB + 0,9313; PT = 1,0861 PC + 0,2967; and PC = 1,0068 PB + 0,6936. Nilai b yang terbentuk pada hubungan panjang bobot ikan lemuru adalah 3,22 dengan pola pertumbuhan adalah allometrik positif.

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QUANTIFICATION OF TUNA FISH TARGET STRENGTH USING QUANTITATIVE ECHO SOUNDER

Jurnal Ilmu dan Teknologi Kelautan Tropis ◽

10.29244/jitkt.v1i1.7936 ◽

2009 ◽

Vol 1 (1) ◽

Author(s):

Henry M. Manik

Keyword(s):

Wave Reflection ◽

Fork Length ◽

Research Programme ◽

Yellowfin Tuna ◽

Target Strength ◽

Bigeye Tuna ◽

Tuna Fish ◽

Thunnus Obesus ◽

The Relationship ◽

Echo Sounder

A preliminary research programme was carried out in order to study the acoustic wave reflection or target strength (TS) of tuna fish using a quantitative echo sounder (QES). The relationships between TS to fork length (FL) and swimbladder volume, for bigeye tuna (Thunnus obesus) and yellowfin tuna (T. albacares) are investigated. The TS of bigeye tuna was about 3 dB higher than yellowfin tuna when comparing species at the same size. The result can be correlated to the swimbladder volume differencebetween species. The relationship between TS and swimbladder volume was quantified for both species.Keywords: tuna fish, target strength, quantitative echo sounder

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Length-weight Relationship, Growth Pattern and Condition Factor of the Silver Catfish Chrysichthys nigrodigitatus (Lacepède, 1803) from Lower River Benue, Nigeria

Asian Journal of Fisheries and Aquatic Research ◽

10.9734/ajfar/2018/v1i2301 ◽

2018 ◽

pp. 1-8

Author(s):

Edem, Edem Thomas ◽

Ofunama, Preye ◽

Eyo, Victor `Oscar

Keyword(s):

Population Dynamics ◽

Growth Pattern ◽

Sustainable Management ◽

Condition Factor ◽

B Value ◽

Health Condition ◽

Artisanal Fisheries ◽

Allometric Growth ◽

Silver Catfish ◽

Weight Relationship

This study was carried out to evaluate the length-weight relationship, growth pattern and condition factor of the Silver catfish Chrysichthys nigrodigitatus from the Lower River Benue Makurdi, Nigeria. A total of 200 freshly caught specimens of C. nigrodigitatus were collected between July 2013 and September 2013 from the catches of the artisanal fisheries at landing points in Wadata Market, Makurdi. Results obtained showed that the “b” value for the males was 1.6067 while that of the females was 1.6791 and combined sexes 1.7371, indicating a negative allometric growth for this species. Correlation coefficient (r) obtained for males (0.9651), 0.9517 (females) and 0.9329 (pooled sexes) showed a positive significant relationship between length and weight of C. nigrodigitatus. Monthly mean condition factor (K), indicate that C. nigrodigitatus were in good physiological health condition. In conclusion, the baseline data on the length-weight relationship, condition factor of C. nigrodigitatus from the lower River Benue provided in this study is crucial in the sustainable management of this species in the River. Also, these findings will be useful in evaluating the population dynamics, stock and the aquaculture potential of C. nigrodigitatus for future purpose.

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