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    Wyświetlanie 1-6 z 6
    Tytuł:
    Analysis of Stingray Catches which Landed in Fish Landing Site of Labuan Bajo, West Manggarai Regency of East Nusa Tenggara
    Autorzy:
    Asut, Helena
    Hamdani, Herman
    Junianto, Junianto
    Dewanti, Lantun Paradhita
    Powiązania:
    https://bibliotekanauki.pl/articles/1076712.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Aetobatus narinari
    Dasyatis kuhlli
    Himantura granulata
    Himantura uarnak
    Pastinachus sephen
    Sex Ratio
    Stingray
    Stingray Size
    Stingray Type
    Taeniura lymma
    Opis:
    The purpose of the study was to determine the sustainability status of Stingray capture to determine the feasibility of catching Stingray in the waters of West Manggarai Regency. The research method used is the survey method, and this was conducted in July 2018 until mid-September 2018. The parameters studied included the type of Stingray, size and sex ratio. The results showed that the Stingray species found were A. narinari, D. kuhlii, H. granulata, H. uarnak, P. sephen, and T. lymma, with species diversity still stable (H' = 1,4). The average size of Stingray species caught makes it, however, not worth catching. Comparison of the Stingray sex ratio shows that T. lymma and H. granulata species were unbalanced, thus they should not be caught. D. kuhli and H. uarnak are still in balance so they can still be harvested. Based on conservation status in IUCN, the stingray that had the most severe threat status was H. granulata and H. uarnak, thus, these should not be harvested at all.
    Źródło:
    World News of Natural Sciences; 2019, 24; 89-99
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Growth Characteristics and Tracing Antagonistic Properties of Bacillus flexus and Bacillus subtilis as Antibacterials to Overcome the Attack of Aeromonas hydrophila Bacteria on Fish
    Autorzy:
    Amatulloh, Zulfahana
    Mulyani, Yuniar
    Dewanti, Lantun Paradhita
    Haetami, Kiki
    Powiązania:
    https://bibliotekanauki.pl/articles/1193472.pdf
    Data publikacji:
    2021
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Aeromonas hydrophila
    Bacillus carboniphilus
    Bacillus flexus
    Bacillus haynesii
    Bacillus subtilis
    Bacillus tequilensis
    Bacillus zhangzhouensis
    Inhibition Zone Test
    fish
    Opis:
    This research was conducted to assess the antibacterial potential of Bacillus flexus and Bacillus subtilis against Aeromonas hydrophila. Bacterial samples came from the stock of the FPIK Unpad Biotechnology Laboratory. This research was conducted in July 2020 - May 2021 in Laboratorium Biotechnology FPIK Padjadjaran University. This research was conducted using qualitative and quantitative descriptive analysis. Bacteria were collected using the purposive sampling method, Observation of the growth curve using the turbidimetric method, and the disc diffusion method for the inhibition zone test with bacterial supernatant treatment with a concentration of 50%, a concentration of 100%, bacterial culture, chloramphenicol antibiotics with a concentration of 4000 ppm as a positive control. The results showed that B. flexus bacteria experienced an exponential phase at 6 to 12 hours, after which it entered a stationary phase at 14 to 72 hours. B. subtilis bacteria experienced an exponential phase at 20 hours. Until 40 hours, then experiencing a stationary phase at 42 hours to 72 hours, and the growth of A. hydrophila bacteria experiences an exponential phase at 6 hours to 28 hours, the stationary phase at 30 to 28 hours 72. Based on the results of the inhibition zone test, it showed the formation of the inhibition zone only in the positive control treatment, while the supernatant and bacterial cultures of B. flexus and B. subtilis didn’t form an inhibition zone.
    Źródło:
    World Scientific News; 2021, 158; 91-104
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Relationship between Benthic Macrofauna Community Structure and Density of Mangrove Vegetation in Mempawah Mangrove Park, West Kalimantan, Indonesia
    Autorzy:
    Noviatri, Syafira Eka
    Zahidah, Zahidah
    Herawati, Heti
    Dewanti, Lantun Paradhita
    Powiązania:
    https://bibliotekanauki.pl/articles/1031497.pdf
    Data publikacji:
    2021
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Community Structure
    Density
    Macro-faunal benthic
    Mangrove
    Mempawah Mangrove Park
    Opis:
    This research was conducted in Mempawah Mangrove Park, West Kalimantan on July – August 2018. The research aims to map the benthic macrofauna community structure and its relationship with the structure of mangrove vegetation. The research method was a survey and use purposive sampling data method in observation stations based on different stages of mangrove vegetation. The observation stations consists of Avicennia marina and Rhizophora stylosa as the species of mangroves. Station 1 consists of mangroves in seedling size, station 2 consists of mangroves in pole size, and station 3 consists of mangrove trees. The benthic macrofauna consist of 8 species from 3 different classes, merostomata, malacostraca, and gastropods. The highest abundance value (155 ind/m2), diversity index (1,875) and similarity index (0,668) is in station 2. The relationship between benthic macrofauna abundance and mangrove density has -0,356 as the correlation coefficient which indicates that an increase of benthic macrofauna abundance is in line with the decrease of mangrove density. High density value in research shows that the mangrove is in seedling size, and vice versa a low density value indicates the mangrove trees. The coefficient of determination (0,1272) indicating that the abundance of benthic macrofauna is affected by the mangrove density as 12,72% and 87,28% affected by other factors.
    Źródło:
    World News of Natural Sciences; 2020, 33; 38-47
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bumpy Road to Understanding Transaction Cost and Fisheries Co-Management
    Autorzy:
    Rizal, Achmad
    Dewanti, Lantun Paradhita
    Apriliani, Izza M.
    Herawati, Heti
    Powiązania:
    https://bibliotekanauki.pl/articles/1063039.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    co-management
    fisheries resources
    property rights
    transaction cost
    Opis:
    The traditional approach for managing the fisheries is the acquiring of property rights over the fishery through legislation by the state. The state than parcels out rights and establishes rules (regulations) of use for the fishers. The state regulates the resource. The conventional literature in resource economics provide some insights into how common property resources such as fisheries, can be managed in a sustainable manner. Common property regimes, such as collective resource management systems, develop when a group of individuals are highly dependent on a resource (s) and when the availability of the resource (s) is uncertain or limited. There is a need to empirically evaluate the nature of the transaction costs involved in fisheries co-management institutions as a basis for defending a move away from the more centralised form of fisheries management institutions. The discussion presented in this paper will serve as a basis for further operationalization of the categories of transaction costs and for empirical case study analysis.
    Źródło:
    World Scientific News; 2019, 124, 2; 252-263
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Selectivity of fishing gear for hairtail fish (Trichiurus lepturus Linnaeus, 1758) commodities in Pangandaran District, Indonesia
    Autorzy:
    Sienna, Yafi Ibnu
    Hasan, Zahidah
    Lili, Walim
    Dewanti, Lantun Paradhita
    Powiązania:
    https://bibliotekanauki.pl/articles/1075461.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Beach seines
    Gill nets
    Pangandaran
    Selectivity
    Trichiurus lepturus
    Opis:
    Hairtail fish (Trichiurus lepturus Linnaeus, 1758) are a major commodity of high economic value in Pangadaran. This study aims to determine the most selective fishing gear for hairtail fish commodities based on the frequency of hairtail fish length, the proportion of the main catch and by-catch in Pangandaran District. Data collected are primary and secondary data. Primary data consists of catch data and fish size length. The catch is obtained by collecting the results of landing fish with gill nets and beach seines. Fish size length data obtained through direct measurement when the fish is landed. Secondary data collected is data on capture fisheries production in Pangandaran District. Data analysis consisted of calculation of length size distribution and comparison of main and by-catches with fishing gears. The analysis was carried out with the help of Microsoft Excel software. The results of this study indicate that hairtail fish in Pangandaran District were captured using gill nets and beach seines. Based on the results of the research conducted on August 2018 until January 2019, it can be concluded that gill net fishing gears are more selective compared to beach seines based on several parameters observed, namely the length distribution and the proportion of main catch : by-catch. The results showed that the comparison of the length distribution of hairtail fish that was appropriately caught between gill nets and beach seines was 85.74% : 30,74%. Comparison of the proportion of main catch : by-catch between gill nets and beach seines was 52.38%: 23.57%.
    Źródło:
    World Scientific News; 2019, 126; 248-260
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Length-Weight Relationship and Catch Size of Bigeye Tuna (Thunnus obesus) Landed in Benoa, Bali, Indonesia
    Autorzy:
    Ahmad, Fadhilah
    Dewanti, Lantun Paradhita
    Arnenda, Gussasta Levi
    Rizal, Achmad
    Powiązania:
    https://bibliotekanauki.pl/articles/1076794.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Benoa Fishing Port
    Bigeye tuna
    Thunnus obesus
    catch size
    isometric
    length-weight
    main catch
    Opis:
    The research was conducted at the Tuna Fisheries Research Station, Denpasar, Bali, in July 2018 (3 weeks duration). There were several types of high-value fish incorporated into this research: tuna, skipjack, shrimp, cob, mackerel, snapper, squid, reef fish (grouper, baronang, lobster / barong shrimp) and ornamental fish. Seaweed processing was also assessed. Benoa Fishing Port is one of the tuna landing base bases in Indonesia. It is the main port in Bali Province and ranks beside Muara Baru (Jakarta), Pelabuhan Ratu (West Java) and Cilacap (Central Java). This research aim to identified length-weight relationship, and proportion of proper catch size of bigeye tuna. Herein, bigeye tuna (Thunnus obesus) was identified visually and then assessed. The first identifier is the large size of the eye. The growth pattern of big eye tuna (Thunnus obesus) landed in Benoa Fishing Portis is isometric, where the length increase is equal to weight gain (isometric positive). The length distribution of big eye tuna was in range of 81-170 cm FL (334 fishes are obtained), and the distribution of weights varied in size from 11-95 kg, with the most common catch size being in the range of 16-20 kg (95 fishes). Of note, 60% of the fish had not reached the proper catch size.
    Źródło:
    World News of Natural Sciences; 2019, 23; 34-42
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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