HighlightUtilization, Growth, and Population of Bullet Tuna (Auxis rochei Risso 1810) in Indian Ocean Southern Sumbawa (2020)Eligibility Status Kawakawa (Euthynnus affinis Cantor, 1849) from Lombok Strait and Indian Ocean Southern Sumbawa (2020)Biological Aspect of Parent Candidate of White-spotted Rabbitfish (Siganus canaliculatus) from Serewe Bay, Lombok Timur District (2020)Study of Sustainability in Management of Malabar Blood Snapper Fisheries in the Indian Ocean Coastal Waters, Sumbawa Regency (2020)Growth Rate and Survivorship of Acropora sp. Fragments that Transplanted on the Artificial Substrate Made from Fly Ash and Bottom Ash (2020)Reproductive Biological Aspect of Panulirus penicillatus in Sumbawa Island Waters, Indonesia (2019)Fisheries Resource Status of Spiny Lobster Panulirus penicillatus in Labangka Waters, South Sumbawa, Indonesia (2019)Growth Rate of Acropora formosa Coral Fragments Transplanted on Different Composition of Faba Kerbstone Artificial Reef (2019)Agribusiness of Edible Jellyfish Crambione mastigophora in Saleh Bay, NTB: Implementation of Sustainable Fisheries (2019)AbstractThe Labangka tidal waters, located south of Sumbawa Regency are the habitat and potential fishing ground for lobsters. The dominant species caught by the Labangka fishermen are the Panulirus penicillatus and P. homarus. Fishing pressure is one of the greatest factor influencing the biological and stock condition of lobsters in Labangka. The aim of this study is to determine the key attributes in growth and population parameters. Some attributes whose values are relatively stable compared to that of 2015, consist of conditional factors such as (old age), growth pattern (hypoallometric), growth coefficient (slow growth), exploitation rate (overexploited), and fishing rate (excessive fishing). While, attributes that have improved are carapace length at first capture (CLc) longer than 50% carapace length of infinity (0.5CL∞) and CL rate (CLc/0.5CL∞) reaching more than 1.00 (CLR > 1.00). In implementing sustainable management of spiny lobster for fishery resources, improvisation is needed in place of catching technologies. One of the recommendation is to add more fishing vessel (Lboat > 17.0 m) equipped with engines that are able to reach potential fishing ground in the west waters of Cemplung beach, Labangka.

Ikan gurami (Osphronemus gouramy) adalah jenis ikan air tawar asli perairan Indonesia yang sudah di kenal oleh hampir seluruh masyarakat Indonesia. Kegitan budidaya ikan gurami masih mengalami kendala dalam tahap penetasan telur diakibatkan serang jamur. Pemanfaatan daun pepaya sebagai bahan alami menjadi alternatif guna meningkatkan keberhasilan penetasan telur ikan gurami. Penelitian ini bertujuan untuk mengetahui efektivitas ekstrak daun papaya terhadap infeksi jamur pada telur ikan gurami serta dosisi yang optimal untuk meminimalisir infeksi jamur tersebut. Metode penelitian yang digunakan adalah metode eksperimental dengan Rancangan Acak Lengkap (RAL) yang terdiri dari empat perlakuan dan tiga kali ulangan. Perlakuan konsentrasi ekstrak daun pepaya yang diberikan meliputi P1 0 ppm (kontrol), P2 1000 ppm, P3 2000 ppm, dan P4 3000 ppm. Parameter uji yang diamati adalah prevalensi, daya tetas (HR) dan sintasan (SR) serta kualitas air. Hasil penelitian menunjukkan perendaman ekstrak daun pepaya memberikan pengaruh nyata terhadap prevalensi, daya tetas, dan sintasan pada telur ikan gurami dengan dosis terbaik 3000 ppm.

No abstract

West Nusa Tenggara (NTB) Province is one of the seaweed production centers in Indonesia. However, the production of seaweed cultivation has various obstacles, one of which is the quality of the seeds and the growth rate of the thallus which tends to decline. Soaking Eucheuma cottonii seeds using seaweed extracts from Sargassum aquifolium, Ulva lactuca, Turbinaria sp. was able to improve seed quality and production of Eucheuma cottonii. The purpose of this study was to determine the extract content of Sargassum sp. from the Ekas Gulf, East Lombok, NTB. The method in this study used proximate analysis of Sargassum sp., alginate analysis using the Fourier Transformed Infra Red (FT-IR) test. The content of N, P and K substances, water, ash, minerals Fe, Ca, fat and carbohydrates from the dry sample of Sargassum aquifolium taken from Ekas Gulf was 7.22; 0.18; 6,70,12,79; 28.89; 0.12; 3.34; -8.41 and 59.51%. Yield and FT-IR alginate samples were 20%; the hydroxyl group (-OH) at wave number 3467.1 cm -1 , 1419.3 cm -1 , the carbonyl group (saturated cyclic COC) at the number 1114.04 cm -1 .1030.2 cm -1 and the typical CH group pyranose at 880.37 cm -1 . Sargassum sp. can increase Eucheuma production by soaking seeds before sowing because they contain many minerals that are needed for eucheuma for growth and development.