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Insentif dan Disinsentif Ekonomi pada Perlindungan Hiu Martil (Sphyrna spp.) sebagai Tangkapan Sampingan di Aceh Jaya Rohmah, Lailia Nur; Yulianto, Gatot; Kamal, Mohammad Mukhlis; Adrianto, Luky; Booth, Hollie
Buletin Ilmiah Marina Sosial Ekonomi Kelautan dan Perikanan Vol 9, No 2 (2023): Desember 2023
Publisher : Research Center for Marine and Fisheries Socio-Economic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/marina.v9i2.12547

Hiu martil (Sphyrna spp.) memiliki peluang tertangkap dan tingkat eksploitasi yang tinggi karena bentuk kepala yang unik dan perilaku agregasi remaja di perairan pesisir dangkal. Hiu yang didaratkan di PPI Rigaih umumnya merupakan bycatch, berukuran kecil dan belum dewasa/anakan.. Penelitian ini bertujuan untuk menganalisis karakteristik nelayan di Aceh Jaya dan mengestimasi besaran insentif maupun disinsentif ekonomi sebagai upaya perlindungan hiu martil di Aceh Jaya. Metode pengumpulan data yang digunakan adalah survei. Pengambilan data primer dilakukan dengan wawancara terstruktur kepada nelayan kecil di Aceh Jaya, pada bulan April sampai dengan Agustus 2022. Responden berjumlah 48 orang yang dipilih menggunakan metode simple random sampling. Metode analisis penghitungan insentif nelayan menggunakan Contingent Valuation Methods (CVM). Hasil riset menunjukkan bahwa karakteristik nelayan di Aceh Jaya adalah nelayan kecil yang beroperasi menggunakan kapal kayu berukuran 5-10 gross tone dengan durasi penangkapan ikan adalah one-day fishing dan ada juga yang 2-5 hari/trip. Estimasi besaran denda (disinsentif) yang bersedia dibayarkan oleh nelayan apabila masih melakukan penangkapan hiu martil (WTP) rata-rata sebesar Rp259.375,00/trip. Kesediaan membayar denda dipengaruhi oleh usia, pendidikan, pendapatan, dan jumlah anak. Insentif ekonomi berupa kesediaan nelayan menerima kompensasi sebagai pengganti aktivitas penangkapan hiu martil (WTA) dengan estimasi rata-rata sebesar Rp434.895,83/trip. Variabel yang berpengaruh adalah usia, pendidikan, lama trip dan pendapatan Title: Economic Incentive and Disincentiveson Protection of Hammerhead Sharks (Sphyrna spp.) as By-catch in Aceh Jaya Hammerhead sharks (Sphyrna spp.) have a high chance of being caught due to their unique head shape and juvenile aggregation behavior in shallow coastal waters whose areas overlap with capture fisheries with high levels of exploitation. These Sharks have landed at the fish landing port Rigaih of Aceh Jaya Regency, which is generally by-catch with small size at the immature/pre-adult stage. This study aims to analyze the characteristics of hammerhead fishermen in Aceh Jaya and estimate the amount of economic incentives in the form of fines to protect hammerhead sharks in Aceh Jaya. The descriptive survey was used as the data collection method in this research. The deep interview was conducted to collect primary data from fishermen from April to August 2022. This research calculates the fisherman’s incentive using contingent valuation method (CVM) analysis. A total of 48 respondents were selected using the simple random sampling method. The findings show that the characteristics of fishermen in Aceh Jaya are small fisheries that operate using 5-10 gross-tone wooden boats with one-day fishing duration and some 2-5 days/trip. The estimated disincentives fishermen will pay if they still catch hammerhead sharks (WTP) is an average of IDR 259,375.00/trip. Willingness to pay is influenced by age, education, income, and number of children. Economic incentives include fishermen’s willingness to receive compensation instead of fishing for hammerhead sharks (WTA), with an average estimated IDR 434,895.83/trip. Influential variables are age, education, length of trip, and income.

Reproductive attributes of the spot-tail shark, Carcharhinus sorrah collected from westernmost waters of Aceh, Indonesia Iqbal, Teuku Haris; Fajri, Ilham; Damora, Adrian; Lubis, Ahmad Fauzan; Simeon, Benaya Meitasari; Muttaqin, Efin; Booth, Hollie
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 13, No 3 (2024): DECEMBER 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.3.42003

The spot-tail shark, Carcharhinus sorrah is a species of requiem shark found primarily in warm coastal waters of the Indo-Pacific region. This study aims to assess the length at first maturity and length distribution The spot-tail shark, C. sorrah collected from key fish landing sites in Aceh Province, Indonesia. Data collection occurred between March 2020 and October 2022 at three fishing ports: Banda Aceh (BA), Aceh Barat (AB), and Aceh Barat Daya (ABD). A One-way Analysis of Variance (ANOVA) was employed to analyze the total length (TL) of male and female fish from these sites. Results indicated an overall sex ratio of female to male fish at 1:1.67 ( = 45.19, p 0.001), with significant differences observed in sex ratios between BA and ABD ( = 6.72, p = 0.01; = 41.14, p 0.001), while AB showed no significant difference ( = 1.64, p = 0.20). Logistic regression analysis revealed variations in the length at which 50% of males and females reached maturity (Lm50): males from ABD, AB, and BA were 110.65 cm TL, 117.03 cm TL, and 152.65 cm TL, respectively, while females from BA, ABD, and AB were 107.30 cm TL, 113.94 cm TL, and 116.14 cm TL, respectively. Notably, males from ABD and females from BA matured earlier than those from other sites. In terms of length distribution, the average greatest with standard deviation (SD) length of male C. sorrah was 122.8737.87 cm TL in AB, followed by BA at 113.8013.10 cm TL and ABD at 107.8618.38 cm TL. This species is important for both ecological balance and fisheries, emphasizing the need for effective management and conservation efforts.Keywords:The spot-tail sharkCarcharhinus sorrahsex ratiolength at first maturitywesternmost Indonesia

Reproductive attributes of the spot-tail shark, Carcharhinus sorrah collected from westernmost waters of Aceh, Indonesia Iqbal, Teuku Haris; Fajri, Ilham; Damora, Adrian; Lubis, Ahmad Fauzan; Simeon, Benaya Meitasari; Muttaqin, Efin; Booth, Hollie
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 13, No 3 (2024): DECEMBER 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.3.42003

The spot-tail shark, Carcharhinus sorrah is a species of requiem shark found primarily in warm coastal waters of the Indo-Pacific region. This study aims to assess the length at first maturity and length distribution The spot-tail shark, C. sorrah collected from key fish landing sites in Aceh Province, Indonesia. Data collection occurred between March 2020 and October 2022 at three fishing ports: Banda Aceh (BA), Aceh Barat (AB), and Aceh Barat Daya (ABD). A One-way Analysis of Variance (ANOVA) was employed to analyze the total length (TL) of male and female fish from these sites. Results indicated an overall sex ratio of female to male fish at 1:1.67 ( = 45.19, p 0.001), with significant differences observed in sex ratios between BA and ABD ( = 6.72, p = 0.01; = 41.14, p 0.001), while AB showed no significant difference ( = 1.64, p = 0.20). Logistic regression analysis revealed variations in the length at which 50% of males and females reached maturity (Lm50): males from ABD, AB, and BA were 110.65 cm TL, 117.03 cm TL, and 152.65 cm TL, respectively, while females from BA, ABD, and AB were 107.30 cm TL, 113.94 cm TL, and 116.14 cm TL, respectively. Notably, males from ABD and females from BA matured earlier than those from other sites. In terms of length distribution, the average greatest with standard deviation (SD) length of male C. sorrah was 122.8737.87 cm TL in AB, followed by BA at 113.8013.10 cm TL and ABD at 107.8618.38 cm TL. This species is important for both ecological balance and fisheries, emphasizing the need for effective management and conservation efforts.Keywords:The spot-tail sharkCarcharhinus sorrahsex ratiolength at first maturitywesternmost Indonesia

Characteristic of Eco-Biologycal and Economic Value of Wedgefish (Rhynchobatus Australiae) in Tanjung Luar, East Lombok Hafizh, Ayesha; Kamal, Mohammad Mukhlis; Adrianto, Luky; Booth, Hollie
Return : Study of Management, Economic and Bussines Vol. 2 No. 8 (2023): Return : Study of Management, Economic And Bussines
Publisher : PT. Publikasiku Academic Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57096/return.v2i8.144

White Spotted Wedgefish (Rhynchobatus australiae) is one of the member Elasmobranch family which is categorized as an endangered species. The R. australiae is the main target by fishers in Tanjung Luar and Maringkik Island. This study was aimed to analyze ecobiological aspect and to estimate economical incentive value of R. australiae fisheries in Tanjung Luar. The Total of 616 samples were collected from Tanjung Luar Fishing Port from 2017-2021, consisting of 64 males and 552 females. Total 150 fisher respondents from Tanjung Luar and Maringkik Island were interviewed. R-Studio software was used to estimate the ecobiological aspects based on life history parameters. Contingent Valuation Method (CVM) and Discrete Choice Experiment (DCE) were used to estimate economical incentive. The result show that the average length of R. australiae was 213,12 ± 2,63 (cmTL) which is accordance with the regulation. However, the sample of R. australiae was dominated by immature size fish. The growth rate of female R. australiae was lower and have a longer lifespan than male. The condition of R. australiae in Tanjung Luar waters was categorized as biological overfishing. The value of Total Willingness to Pay (WTP) for R. australie conservation was Rp11.226.000/month, whereby the value for individual was Rp.62.340/person. Education and income are the most significant variables affecting WTP.

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