Produksi Perikanan Tuna Hasil Tangkapan Rawai Tuna Yang Berbasis Di Pelabuhan Benoa, Bali

Jatmiko, Irwan; Setyadji, Bram; Novianto, Dian

doi:10.15578/jppi.22.1.2016.25-32

Cited by 7 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ikan madidihang ditangkap dengan berbagai alat tangkap seperti rawai tuna, pukat cincin, pancing ulur, dan jaring insang. Produksi madidihang yang didaratkan di Pelabuhan Benoa mendominasi sebesar 50% dari total produksi 28.000 ton pada kurun waktu 2010-2014 (Jatmiko et al 2016a). Nilai ini diikuti oleh tuna mata besar sebesar 40% dan tuna sirip biru selatan sebesar 10%.…”

Section: Pendahuluanunclassified

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

2018

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Pendahuluanunclassified

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

2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…Study area map in the Eastern Indian Ocean (EIO) off the Java (modified from Syamsuddin et al 2013 andGingele et al 2002) The hook rates of bigeye tuna (HR) were computed by dividing the number of fish caught per 100 hooks operated based on each georeferenced fishing position. HR were used as an indicator in assessing the abundance and exploitation rate of fish (Bahtiar et al 2013) and have been applied to previous longline studies in the same area (Nugraha and Triharyuni 2009;Nugraha and Hufiadi 2012;Jatmiko et al 2014). The data were divided into train and validation datasets.…”

Section: Data Collectionmentioning

confidence: 99%

Implementation of the Pelagic Hotspot Index in detecting the habitat suitability area for bigeye tuna (Thunnus obesus) in the eastern Indian Ocean

ISTNAENI,

GAOL,

ZAINUDDIN

et al. 2023

Biodiversitas

View full text Add to dashboard Cite

Abstract. Istnaeni ZD, Gaol JL, Zainuddin M, Fitrianah D. 2023. Implementation of the Pelagic Hotspot Index in detecting the habitat suitability area for bigeye tuna (Thunnus obesus) in the eastern Indian Ocean. Biodiversitas 24: 5044-5056. Bigeye tuna (Thunnus obesus Lowe, 1839) is a species with a high economic value that can migrate horizontally and vertically over a large area. Although sea temperature has been the main focus of previous findings, other variables can serve as a reasonable proxy. Here we used sea surface chlorophyll-a, sea surface height, subsurface sea salinity, and subsurface temperature to predict the suitable habitat area for bigeye tuna in the Eastern Indian Ocean Off Java. A Generalized Additive Model was performed to analyze the best-fit model evaluated from the p-value and Cumulative Deviance Explained. The suitability index of the selected model was calculated using Pelagic Hotspot Index constructed from multi-spectrum satellite data. The results showed that the high catches were located on the high suitable index value and supported by chlorophyll-a as the most significant factor, followed by sea surface height, temperature, and salinity. This condition was stimulated by the high feeding opportunity, which may relate to the EIO's oceanic front, eddies, and specific current patterns. This study helps identify ecological hotspots, track the migration, and monitor the seasonal closure for bigeye tuna, particularly in EIO.

show abstract

“…This is further supported by data collected by the Wildlife Conservation Society Organization (WCS) in 2017, 2018, and 2019, which show that for three years, A. pelagicus continued to dominate shark catches with a percentage composition of 29%, 35%, and 38%, respectively ten shark species landed at Kutaraja Ocean Fishery Port. A. pelagicus which landed at Kutaraja Ocean Fishery Port is a by-catch from ring trawl fishing gear, surface longline, tuna longline, handline and tug line as well as the main catch of shark longline [4].…”

Section: Introductionmentioning

confidence: 99%

Population dynamics of thresher shark (Alopias pelagicus) landed at the Kutaraja fishing port, Banda Aceh

Rahmah,

Rusmar,

Salmarika

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

At the Kutaraja Fishing Port, the shark species Alopias pelagicus accounts for the vast majority of shark catches. The purpose of this research was to ascertain the length distribution of A. pelagicus, the length at which it was first captured, the sex ratio, the von Bertalanffy growth parameters and functions, the mortality rate, and the exploitation rate. This study was carried out in the Kutaraja Fishing Port from December 2021 to February 2022. The incidental sampling method was used to collect 406 samples in total. The FAO-ICLARM Stock Assessment Tools were utilized to analyze population dynamics parameters. The male, female, and combined length distributions of A. pelagicus ranged from 186-295cmTL, 205-304cmTL, and 186-305cmTL, respectively. The length of the first capture was 249.40 cmTL, 252.29 cmTL and 250.78 cmTL, sex ratio of males and females is 1:2.24, the asymptotic length (L∞) was 344.25 cmTL, fish age at length 0 (t0) was 0.066/year, with a growth rate (k) of 0.50/year, 0.36/year dan 0.19/year, 374.83 cmTL and 378.92 cmTL, 0.058/year dan 0.048/year. Natural mortality (M) was assessed to be 0.59/year, 0.47/year, and 0.31/year, fishing mortality (F) was 2.08/year, 2.47/year, and 2.20/year, and total mortality (Z) was 2.67/year, 2.94/year, and 2.51/year. The A. pelagicus exploitation rate (E) was 0.78/year, 0.84/year, and 0.88/year, demonstrating complete exploitation of the male, female, and combined populations.

show abstract

Produksi Perikanan Tuna Hasil Tangkapan Rawai Tuna Yang Berbasis Di Pelabuhan Benoa, Bali

Cited by 7 publications

References 0 publications

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

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

Implementation of the Pelagic Hotspot Index in detecting the habitat suitability area for bigeye tuna (Thunnus obesus) in the eastern Indian Ocean

Population dynamics of thresher shark (Alopias pelagicus) landed at the Kutaraja fishing port, Banda Aceh

Contact Info

Product

Resources

About