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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences BIOTROPIA - The Southeast Asian Journal of Tropical Biology The Journal of Experimental Life Sciences (JELS) Journal of Environmental Engineering and Sustainable Technology JFMR (Journal of Fisheries and Marine Research) AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Penelitian Perikanan Indonesia Journal of Fisheries & Marine Berita Biologi
Dewa Gede Raka Wiadnya
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Neuroscience Physics Social Sciences Veterinary

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Journal : Journal of Environmental Engineering and Sustainable Technology

 1 
LENGTH-WEIGHT RELATIONSHIP AND CONDITION FACTOR OF FOURFINGER THREADFIN (Eleutheronema tetradactylum Shaw, 1804) IN SEDATI, SIDOARJO Rahman, Muhammad Arif; Wiadnya, Dewa Gede Raka; Harlyan, Ledhyane Ika; Setyohadi, Daduk; Mahsuna, Inna Rohmatul
Journal of Environmental Engineering and Sustainable Technology Vol 11, No 02 (2024)
Publisher : Directorate of Research and Community Service (DRPM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jeest.2024.011.02.7

Abstract

The fourfinger threadfin, Eleutheronema tetradactylum is one of economic demersal species in Indonesia. Information of its biology was needed to ensure the sustainable fisheries management of this species. This study aimsto estimate the lengthweight relationship and condition factor of E. tetradactylum landed in Sedati, Sidoarjo, East Java. In total, 649 samples were randomly collected from Sedati Fishing Base during the study. The results indicated that E. tetradactylum has negative allometric growth pattern (b = 2.8, p<0.05), means the growth of length was faster than weight. In addition, the average value of relative weight condition factor (kn) was 1.01, which is greater than or equal to 1, means E. tetradactylum live in good growth conditions. This finding contributes to managing E. tetradactylum fishery in the north Java waters, especially in East Java. As this study was conducted from unsexed samples, future research with focuse on sexed samples is suggested to give more comprehensive result.
ESTIMATION OF BIOLOGICAL PARAMETERS OF SQUID (LOLIGO SPP) CAUGHT IN THE WATERS OF TUBAN REGENCY Setyohadi, Daduk; Kartikasari, Wahida; Setyanto, Arief; Wiadnya, Dewa Gede Raka; Harlyan, Ledhyane Eka; Sunardi, Sunardi; Nabilla, Azma Salma
Journal of Environmental Engineering and Sustainable Technology Vol 11, No 02 (2024)
Publisher : Directorate of Research and Community Service (DRPM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jeest.2024.011.02.8

Abstract

Squid (Loligo spp.) belongs to the Cephalopoda group (squid, cuttlefish, octopus) and is one of the primary export commodities in the fisheries sector. National squid production increased by 5.5%, from 193,583.82 tons in 2020 to 204,156.28 tons in 2021. However, the potential sustainable catch in the Java Sea (WPPNRI 712, including the Madura Strait) has experienced an average annual decline of 1.9% from 2017 to 2022, dropping to 66,608 tons in 2022. This study aims to identify the species composition of squid, analyze length-weight relationships, and determine the mantle length at first gonad maturity (Lm). Data were obtained from fixed lift-net catches and analyzed in the Fisheries Exploitation Laboratory of Universitas Brawijaya. The results identified two main species: Photololigo duvaucelli (Indian squid) and Sepioteuthis lessoniana (bigfin reef squid). The composition of squid catches was 1.29% in purse seine operations and 2.91% in payang (seine net) operations. The length-weight relationship of both species exhibited a negative allometric growth pattern, where length growth outpaces weight gain. The sex ratio between males and females was balanced for both species. The mantle length at first gonad maturity (Lm) was greater than the mantle length at first capture (Lc), indicating that the catch was dominated by immature squid. These findings highlight the need for minimum catch size regulations to ensure the sustainability of squid resources in the Tuban waters.
Co-Authors Abdul Rahem Faqih Agung Pramana Warih Marhendra, Agung Pramana Warih Agus Tumulyadi Anam, C Anam, M Choirul Anam, M. Choirul Andik Isdianto Anita Septiyani, Anita Arafik Lamadi Arief Setyanto Asadi, M. Arif Asmirijal, Amrey Syahnur Astuti , Septiana Sri Ating Yuniarti Bambang Semedi Daduk Setyohadi Darmawan Ockto Sutjipto Dewi, Citra Satrya Utama Dhea, Luthfia Ayu Diza, Novia Fara Eko Sulkhani Yulianto Endang Yuli Herawati Feni Iranawati, Feni Fuad Fuad Gatut Bintoro Hadiyah, Lisa Nur Happy Nursyam Hariati, Anik Martinah Harlyan, Ledhyane Eka Herjayanto, Muh. Irwan Jatmiko Kartikasari, Wahida Kholil, Kiki Nur Azam Kholil, Kiki Nur Azzam Kusuma, Wahyu Endra Ledhyane Ika Harlyan Lee, Ming-An Maheno Sri Widodo, Maheno Sri Mahsuna, Inna Rohmatul Marhendra, A.P.W Marsela, Kristina Muammar Kadhafi Muhammad Dailami, Muhammad Nabilla, Azma Salma Nico Rahman Caesar Nur Khamidah Paricahya, Akhsan Fikrillah Rahman, Muhammad Arif Rahmi Nurdiani Samuel, Pratama Diffi Saputri, Rengga Retno Laila Soemarno Soemarno Sriwidodo, Maheno Sufaichusan, Ifa Sukandar Sukandar Sunardi Sunardi Syarifah Hikmah Julinda Sari Tri Djoko Lelono Utama, Andria Ansri Veryl Hasan Widyawati, Yuni Yasmin, Delviega Aisyah