ASPEK BIOLOGI DAN DINAMIKA POPULASI IKAN LAYANG BIRU  (Decapterus macarellus Cuvier, 1833) DI PERAIRAN LAUT SULAWESI

Zamroni, Achmad; Kuswoyo, Adi; Chodrijah, Umi

doi:10.15578/bawal.11.3.2019.137-149

Cited by 14 publications

(11 citation statements)

References 16 publications

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“…For example, D. macrosoma spawn in April-May in Makassar Strait (Ahmadi, 2020) while in Ambon Bay in July-August (Syahailatua & Sumadhiharga, 1991) and between July and November in Java Sea (Atmaja & Sadhotomo, 2005). Spawning season for D. macarellus in Tomini Bay in August (Widiyastuti & Zamroni, 2017) while in Celebes Sea occurs in March (Zamroni et al, 2019).…”

Section: Gonad Maturity Stagementioning

confidence: 99%

Biological aspects of roundscads (Decapterus spp.) inhabiting the waters of Southeast Maluku, Eastern Indonesia

Pattikawa¹,

Bertha²,

Stephan³

et al. 2023

Fish Aquat Sci

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This research was conducted at Langgur City, Southeast Maluku Regency, Maluku Province, Eastern Indonesia from November 2020 to February 2021 to study biological aspects of roundscads (Decapterus spp.) which consist of species composition, sex ratio, gonad maturation level, size distribution, length-weight relationship and condition factor. Samples were collected at traditional fish market in Langgur City. Fish samples collected at the market were put into cool box and then brought to the laboratory for further examination. Fish samples were identified, separated based on species, dissected to determine their sex and gonad maturation stage and then measured. Totally, there were 290 specimen collected which consist of five species namely Decapterus kurroides, D. macarellus, D. macrosoma, D. muroadsi and D. russelli. Sex ratio between male and female for all species showed 1:1. Gonad maturation level showed that stage I and II have higher percentage than stage III and IV indicates immature fish more dominant compare to mature one. Among five species found, D. macarellus has larger size while the smaller belongs to D. muroadsi. Results of length-weight relationship analysis showed that roundscads inhabiting Southeast Maluku waters have isometric and negative allometric growth pattern with relative condition factor around 1.00.

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Section: Gonad Maturity Stagementioning

confidence: 99%

Biological aspects of roundscads (Decapterus spp.) inhabiting the waters of Southeast Maluku, Eastern Indonesia

Pattikawa¹,

Bertha²,

Stephan³

et al. 2023

Fish Aquat Sci

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“…Terdapat perbedaan nilai mortalitas akibat penangkapan ikan tersebut dapat disebabkan oleh perbedaan distribusi ukuran ikan dan kelompok umur. Selain itu koefisien mortalitas terkait dengan penangkapan ikan yang dipengaruhi oleh jumlah alat tangkap dan intensitasnya; semakin tinggi jumlah alat tangkap yang mempunyai intensitas yang lebih tinggi berdampak pada koefisien mortalitas menjadi lebih besar (Zamroni et al, 2019). Nilai tingkat eksploitasi (E) dari ikan layang didapatkan dari perbandingan antara nilai mortalitas akibat penangkapan (F) dengan nilai mortalitas total (Z) yaitu sebesar 0,82, yang mempunyai arti bahwa 82 % mortalitas ikan layang di perairan Gorontalo Utara merupakan hasil dari kegiatan penangkapan ikan.…”

Section: Pertumbuhan Dan Laju Eksploitasiunclassified

Karakteristik Biologi dan Laju Eksploitasi Ikan Layang di Perairan Gorontalo Utara

Auliyah¹,

Olii²

2022

siganus

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Tujuan penelitian ini adalah untuk mengetahui karakteristik biologi ikan layang dan laju eksploitasi ikan Layang yang ada di perairan Gorontalo Utara. Pengambilan sampel ikan dilakukan dari bulan Mei-Agustus 2021 dengan mengukur panjang total dan pengamatan kematangan gonad yang dilakukan Pengamatan TKG akan dilakukan menggunakan mikroskop. Hasil penelitian menunjukkan bahwa sebaran panjang total berkisar antara 15,5 – 22,5 cm, nilai eksponen b < 3 sehingga memiliki pola pertumbuhan bersifat allometrik negatif yang berarti pertambahan berat lebih lambat dari pertambahan panjang. Nisbah kelamin ikan Layang jantan dan betina tidak berimbang yaitu 2,277 : 1. Ikan yang tertangkap didominasi tingkat kematangan gonad tingkat III - IV. Estimasi nilai parameter pertumbuhan dimana panjang asimtotik adalah 23,6 cm; Nilai koefisien pertumbuhan per tahun adalah 0,67 cm. Nilai panjang pertama kali matang gonad lebih kecil dibandingkan dengan ukuran panjang rata-rata tertangkap serta laju eksploitasi ikan layang yang didapatkan melebihi rasio eksploitasi seimbang diindikasikan dapat mengganggu stok ikan layang di perairan. A B S T R A C T The purpose of the study was to determine the biological characteristics and rate exploitation of scad in the waters of North Gorontalo. Fish sampling was carried out by measuring the total length and observing the maturity of the gonads from May – August 2021. The results showed that the total length distribution ranged from 15.5 – 22.5 cm, growth pattern of Decapterus russelli was negative allometric, which means the weight gain is slower than the length gain. The sex ratio of male and female fish was 2,277 : 1. The fish caught are dominated by the level of maturity level of the gonads III - IV. The estimated value of growth parameters where the asymptotic length is 23.6 cm; The value of the growth coefficient per year is 0.67 cm. The value of the length at first maturity of the gonads is smaller than the average length caught and the exploitation rate of scad that is obtained that exceeds the balanced exploitation ratio is indicated does not support the balance stock of scad in the waters.

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“…Menurut WCS (2019), panjang ikan layang di beberapa lokasi pendaratan ikan di Sulawesi Utara berukuran 11,0-24,8 cm dengan ukuran dominan 19,22 cm. Kondisi lainnya juga dilaporkan oleh Zamroni et al (2019) di mana ikan layang memiliki sebaran ukuran panjang 10,3-32,3 dengan ukuran dominan 20,7-26,8 cm.…”

Section: Analisis Dataunclassified

Management of scad fisheries (Decapterus spp.) in Sulawesi Sea Waters, North Sulawesi Province, using EAFM

Puansalaing¹,

Budiman²,

Boneka³

et al. 2021

J.Aq.Sci.Mgmt

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There are a large variety and quite abundant types of small pelagic fish that have high economic value in the Sulawesi Sea. One of which is the blue scad fish or commonly known as malalugis (Decapterus macarellus). This study aims to analyze and determine the status of scad fisheries management and to develop recommendations in the management of scad fisheries in the waters of Sulawesi Sea, North Sulawesi Province. The evaluation of fishery management status is carried out using multi-criteria analysis (MCA) through the development of composite index of each indicator of Ecosystem Approach to Fisheries Management (EAFM). The results showed that, in general, the status of scad fisheries management in North Sulawesi Province, was in ‘good’ category, specifically reviewed from the domain of fish resources fall into the category of “medium”, habitat and ecosystem “good”, fishing techniques “good”, economy “not good”, social “medium” and institutional “good”. Management actions take precedence over domains that have “poor” indicator values. Priority management action is implemented in the economic domain, followed by the domain of fish resources, social, institutional and fishing techniques.Indonesian title: Pengelolaan perikanan ikan layang (Decapterus spp.) di perairan Laut Sulawesi, Provinsi Sulawesi Utara, menggunakan EAFM

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ASPEK BIOLOGI DAN DINAMIKA POPULASI IKAN LAYANG BIRU (Decapterus macarellus Cuvier, 1833) DI PERAIRAN LAUT SULAWESI

Cited by 14 publications

References 16 publications

Biological aspects of roundscads (Decapterus spp.) inhabiting the waters of Southeast Maluku, Eastern Indonesia

Biological aspects of roundscads (Decapterus spp.) inhabiting the waters of Southeast Maluku, Eastern Indonesia

Karakteristik Biologi dan Laju Eksploitasi Ikan Layang di Perairan Gorontalo Utara

Management of scad fisheries (Decapterus spp.) in Sulawesi Sea Waters, North Sulawesi Province, using EAFM

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