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All Journal Journal of Indonesian Tourism and Development Studies IJAF Journal of Fisheries & Marine
Ali Harris, Ali
Bagian Klinik Hewan, Fakultas Kedokteran Hewan, Universitas Udayana, Bali
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Environmental Science Social Sciences

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Pengaruh Suhu yang Berbeda terhadap Keberhasilan Pemijahan Kerang Bulu (Anadara Antiquata) Wahab, Abdul; Amin, Muhamad; Harris, Ali
The Indonesian Journal of Aquaculture and Fisheries Vol 1 No 1 (2019): Volume 1 Nomor 1 Tahun 2019
Publisher : Fakultas Perikanan Universitas 45 Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2212.119 KB) | DOI: 10.47353/ijaf.v1i1.5

Abstract

Pemijahan merupakan penentu dalam kegiatan pembenihan kerang bulu. Pemijahan pada hatchery biasanya didahului dengan perangsangan dan rangsangan yang diberikan berupa manipulasi suhu. Penelitian ini bertujuan untuk mengetahui pengaruh suhu terhadap tingkat pemijahan dari kerang bulu. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL). Rancangan penelitian menggunakan 3 (tiga) faktor perlakuan suhu yang berbeda dan ulangan sebanyak 3 kali. Perlakuan P1 dengan suhu 25±0,5oC, P2 dengan suhu 30±0,5oC, dan P3 dengan suhu 34±0,5oC. Variabel Independen atau variabel bebas pada penelitian ini adalah variasi suhu. Masing-masing perlakuan diulang sebanyak 3 kali ulangan dan total unit percobaan sebanyak 9 unit percobaan. Penelitian ini mendapatkan hasil dengan perlakuan 2 mendapatkan hasil paling baik dengan tingkat penetasan telur sebesar 87% diikuti perlakuan 3 yaitu 46.5%, dan perlakuan 1 tidak memijah. Sedangkan untuk kelangsungan hidup nilai tertinggi diperoleh pada perlakuan P2 (64.34%) dan P3 (24%).
The Characteristics of Chitosan Derived from Lobster Shells and its Effect on Fungi Activity and Water Stability of Lobster Pellets Ihsan, Muhsinul; Harris, Ali; Mukminah; Megawati; Purwati, Nining; Muliasari, Handa; Priyambodo, Bayu; Jones, Clive; Nankervis, Leo
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 2 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v17i2.57474

Abstract

Graphical Abstract   Highlights of Research The chitosan was successfully produced from lobster shells Panulirus homarus. The characteristics and quality of chitosan from lobster shells Panulirus homarus were observed. The anti-fungal activity of chitosan was assessed. Chitosan enhances the water stability of lobster pellets.       Abstract Tropical rock lobster aquaculture is a lucrative industry that is currently limited by the lack of appropriate formulated feed. Its nocturnal, benthic feeding behavior necessitates a water-stable feed that maintains integrity under tropical marine conditions without degrading. Chitosan, a biopolymer derived from lobster (Panulirus homarus) shells, has potential applications in aquaculture as an antifungal agent and feed binder. We report on the characteristics of chitosan extracted from the exoskeleton of spiny lobsters (Panulirus homarus), including its effect on fungal activity and water stability of pellets. Chitosan was produced through three main steps: deproteination, demineralization, and deacetylation. The resulting chitosan was characterized through crude composition (AOAC methods), FTIR spectra, and scanning electron microscope (SEM), while antifungal activity was assessed through in vitro assays. Chitosan was used to coat lobster feed pellets by immersion method at different concentrations (0%, 0,5%, 1%, 1,5%, and 2%), and its impact on pellet water stability was assessed. There were three replications in fungal activity and water stability test. The yield of chitosan was 5.9 ± 0.01% of the total shell mass, with 96.99% ± 0.01 degree of deacetylation (DD). The resulting product contained 5.94 ± 0.07% moisture, 36.72 ± 0.05% ash and 2.73 ± 0.08% nitrogen. Chitosan morphology was characterized as an irregular shape with dimensions ranging from 157 to 391 µm, with a combination of striated surface textures. Increasing concentration of chitosan increased water stability of pellets up to 1.5% inclusion, while 0.5% optimized Fusarium sp. inhibition. These findings suggest that chitosan from lobster shells can be sustainably utilized to enhance feed quality, reducing fungal contamination and nutrient leaching in aquaculture systems.
Action Plan in Developing Sea Turtle Conservation as Ecotourism Attraction in Sukamade, Meru Betiri National Park Haryati, Jehan Ramdani; Putri, Jayarani Fatimah; Chairiyah, Nurul; Harris, Ali; Putri, Helen Aulia; Pamungkas, Ratih Nila
Journal of Indonesian Tourism and Development Studies Vol. 4 No. 2 (2016)
Publisher : Graduate School, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jitode.2016.004.02.04

Abstract

Sukamade Coastal Area located in Meru Betiri National Park has particular object as ecotourism attraction, i.e. Sea Turtle. On the other hand, national park management use the cross subsidy from ecotourism activities to promote the conservation action plans for the survival of sea turtle. This study was aimed to formulate action plans to develop the sea turtle conservation as ecotourism attraction in Sukamade Coastal Area. Field observation was conducted to evaluate the current activities of the sea turtle conservation and ecotourism activities in Sukamade. Semi-structured interview and secondary data collection was also conducted to support the formulation of the action plan. Data was analyzed by SWOT method to be developed into action plan. Results showed that the management of sea turtle conservation and ecotourism activities in Sukamade Coastal Area has been attempted to meet the conservation concept for sea turtle but also beneficial for the ecotourism implementation. However, we recommend a long term and short term action plan for the sustainability of the sea turtle conservation and ecotourism activities in Sukamade Coastal area. It includes the mangrove restoration, sea turtle feed development, mapping of sea turtle distribution and migration, the use of up to date biotechnology, workshop on conservation management, and the development of research facility in the area. Additional to the current policy on sea turtle conservation and ecotourism activities, the action plan that we recommended were expected to improve the sustainability management in Sukamade Coastal Area. Keywords: Action Plan, conservation, ecotourism, Sea Turtle.
Co-Authors Abdul Wahab Haryati, Jehan Ramdani Ihsan, Muhsinul Jayarani Fatimah Putri, Jayarani Fatimah Jones, Clive Megawati Muhamad Amin Mukminah Muliasari, Handa Nankervis, Leo Nurul Chairiyah Pamungkas, Ratih Nila Priyambodo, Bayu Purwati, Nining Putri, Helen Aulia