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Eko Prianto, Eko
Universitas Riau
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Journal : simbiosa

 1 
Population Biology and Utilization Status of Motan Fish (Thynnichthys thynnoides) in Lake Karangan, Pelalawan Regency, Riau Aida Rama Rani; Eko Prianto; Muhammad Fauzi
SIMBIOSA Vol 15, No 1 (2026): SIMBIOSA
Publisher : Program Studi Pendidikan Biologi, Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/simbiosa.v15i1.9375

Abstract

The motan fish (Thynnichthys thynnoides) is one of the economically important fish species found in the waters of the Kampar River, including Lake Karangan, Rantau Baru Village, Pangkalan Kerinci Sub-district, Pelalawan Regency. Fishing activities that take place almost year-round, coupled with the use of fishing gear with relatively small mesh sizes, are thought to place pressure on motan fish stocks. This study aims to analyse biological parameters and determine the exploitation status of the motan fish in Lake Karangan. The research was conducted from January to March 2026 using a survey method involving sampling of fishermen’s catches. Population parameter analysis was performed using the FISAT II software, whilst the exploitation status was analysed using the Length-Based Spawning Potential Ratio (LB-SPR) method. A total of 242 motan fish were collected, ranging in length from 95–169 mm. The results of the study indicate that motan fish exhibit a negative allometric growth pattern with a b-value of 2.8205. The growth parameters obtained were asymptotic length (L∞) 175.35 mm, growth coefficient (K) 0.610 per year, and t0 of -0.31 years. The values for total mortality (Z), natural mortality (M), fishing mortality (F), and exploitation rate (E) were 2.50; 0.82; 1.69; and 0.67 per year, respectively. The results of the LB-SPR analysis indicate a first-capture length (SL50) of 105.92 mm, a first-maturity length (Lm50) of 109 mm, and a Spawning Potential Ratio (SPR) of 16%. These values indicate that the exploitation status of motan fish in Lake Karangan is in the ‘over-exploited’ category; therefore, management efforts are required through the regulation of catch sizes and the use of more selective fishing gear to support the sustainability of motan fish stocks.
Co-Authors A. Ma'suf Abdul Fadlil Adriman Adriman Adriman, Adriman Aida Rama Rani Aisyah Aisyah Aisyah Aisyah Aisyah Aisyah Aisyah Aisyah Aisyah Ali Suman Ali Suman Amelia Fauziah Husna amri, khairul Andri Hendrizal Anton Yudhana Artika, Media Asep Ma'mun Asep Priatna Asep Priatna Atika, Berliana Awal Subandar Berliana Atika Bintal Amin Budijono, Budijono Chairulwan Umar Chairulwan Umar Chairulwan Umar Desvind, Elfahra Dyta Putri Dewi, Yuni Sukma Dian Oktaviani Dian Oktaviani Eddiwan Kamaruddin Efriyeldi, Efriyeldi Eko Prasetia Eko Purwanto Eko Purwanto Eko Swi Damarwan Endi S. Kartamihardja Endi Setiadi Kartamihardja Endi Setiadi Kartamihardja Endi Setiadi Kartamihardja Endi Setiadi Kartamihardja Eni Sumiarsih Eti Nurhayati Fahreza, Rizki Fattah, Husain Abdul Febrina Rismawati Guritno, Wulan Harmelita Harmelita Harmelita, Harmelita Herlambang Sigit Pramono Hermawan, Andara Dwi Hilda Z. Dahlan Husnah Asyari Husnah Husnah Husnah Husnah Husnah Husnah Husnah Husnah Husnah Husnah Husnah Husnah Ikhsan kurniawan Imanuel Natalis Maas Indradewa, Rhian Intan Purnama Sari Irdha Mirdhayati Isma, Muhammad Fauzan Ismudi Muchsin Ismudi Muchsin Israk, Radiatun Joko Purwanto Kamaluddin Kasim Kamaluddin Kasim Kamaluddin Kasim Kamil, Hasan Rahmat Karnila, Rahman Karnila Ketut Ima Ismara Khairul Amri Khairunnisa, Rizka Lubis, Najiyya Sahilda M. Fauzi M. Mukhlis Kamal Ma?mun, Asep Makri Makri Mega Ramadhani MISWADI MISWADI Miswadi Miswadi Miswadi Miswadi Mohammad Mukhlis Kamal Muchlizar Muchlizar Muchlizar, Muchlizar Muhammad Akmal Muhammad Arifan Rakhshanjani Muhammad Bintang Anto Mycawa Muhammad Farhan Surez Muhammad Fauzi Muhammad Hasbi Muhammad Luthfi Muhammad Mukhlis Kamal Mustaqim, Ilmawan Nainggolan, Vica Meyana Anthika Ni Komang Suryati Ni Komang Suryati Nona Mutiara Sari Nora Saulina Noralisa Nilam Sari Nur El Fajri Nur El fajri Nuraini El Fajri Nurhening Yuniarti Nurwijayanti Oktaviana, Della Pandera, Cici Pranata, Eka Prasetyo, Kurnifan Adhi Priyo Suharsono Sulaiman Priyo Suharsono Sulaiman Putri, Melza Adika Putri, Riska Yana Rahmatdillah Rahmatdillah Rakhshanjani, Muhammad Arifan Ramadhani, Mega Ramadhani, Wahyu Ikma RAMSES FIRDAUS Regi Fiji Anggawangsa Reni Puspasari Reny Puspasari Reny Puspasari RHOMIE JHONNERIE Ridwan Manda Putra Rina D’rita Sibagariang Riska Yana Putri Risma Amelia, Risma Rismawati, Febrina Rizka Khairunnisa Rizka Khairunnissa Romie Jhonnerie Rudi Masuswo Purwoko Rudy Masuswo Purwoko Rudy Masuswo Purwoko Saputri, Ratih Okta Sari, Bella Puspita Sari, Noralisa Saulina, Nora Setiya Tri Haryuni Setiya Triharyuni Setiya Triharyuni Simanjuntak, Mega Sri Devi Sinaga, Merry Friendly Theresia Sinaga, Owen Rivaldi Siswanta Kaban Siti Nurul Aida Sitinjak, Yuannito Rick Yorda Situmorang, Icha Regina Siwolo, Apria Bodhi Sofian, Alifa Khansa Solekha Aprianti Solekha Aprianti Syafawani, Wan Fauziyah Syamsiar, Syamsiar Syarifah Nurdawati Syarifah Nurdawati TAUFIK HIDAYAT Tengku Dahril, Tengku Tumanggor, Rosalina Usman Muhammad Tang Utami, Tiara Viny Volcherina Darlis Wan Fauziyah Syafawani Wibawa, Wisnu Alfianta Wieda Nurwidada H. Zain Windarti Windarti Yela, Yayang Febri Yossi Oktorini Yudho Harjoyudanto Yuliati - Yuliati Yuliati Yunizar Ernawati Zuriati Murni