Phenotypic assessment of safety and probiotic potential of native isolates from marine fish Moolgarda seheli towards sustainable aquaculture

In the last three decades aquaculture is a rapidly developing sector worldwide and antibiotics are used popularly as growth promoter. Antibiotic use was banned because research proved that antibiotic has caused many effects on environment and human health. Therefore, finding antibiotic alternatives is the first priority. The most prospect products today are probiotic and prebiotic. β-glucan is one of the immunostimulants which showed a variety of benefits to the health of many aquaculture species. In this paper only the results of β-glucan, a kind of prebiotic supplied in aquaculture, were summarized. The major benefit of β-glucan are to boost growth, to reduce mortality, to enhance tolerance or stress resistance to environmental or pathogen challenges. Although the applications of β-glucan are popular worldwide, its use in aquaculture in Vietnam is still limited. This paper provides an important reference for β-glucan utilisation which may help to develop a sustainable aquaculture in Vietnam.

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New Lactobacillus strains with probiotic potential isolated from traditionally made Serbian cheese

10.26226/morressier.5f4ccc57648d3d8b3f362bda ◽

2020 ◽

Author(s):

Ivana Radojević ◽

Olgica Stefanovic ◽

Katarina Mladenovic ◽

Mirjana Grujović

Keyword(s):

Probiotic Potential

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Faculty Opinions recommendation of What is the effect of climate change on marine fish biodiversity in an area of low connectivity, the Baltic Sea?

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.717147848.792403064 ◽

2012 ◽

Author(s):

Ferdinando Boero ◽

Valeriano Parravicini

Keyword(s):

Climate Change ◽

Baltic Sea ◽

Marine Fish ◽

The Baltic Sea ◽

Fish Biodiversity ◽

The Baltic

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Studi pengembangan unit perbenihan ikan laut di Pulau Gumilamo Kabupaten Halmahera Utara

e-Journal BUDIDAYA PERAIRAN ◽

10.35800/bdp.3.3.2015.10360 ◽

2015 ◽

Vol 3 (3) ◽

Author(s):

Yitzhak Koloba ◽

Hengky J Sinjal ◽

Ockstan Kalesaran

Keyword(s):

Local Government ◽

Development Strategy ◽

Marine Fish ◽

Government Regulation ◽

Swot Analysis ◽

Fishing Effort ◽

Government Support ◽

Fish Hatchery ◽

The Development Strategy ◽

Internal And External Factors

This research intended to evaluate the development strategy of Marine Fish Hatchery Unit at Gumilamo Island, North Halmahera. Analysis SWOT was used to determine the development strategy. Data were collected by questionnaire, interview and literature relevant to the research. SWOT analysis showed the internal and external factors that affected the development of Marine Fish Hatchery at Gumilamo island. The strenght were location, water quality , local government support, and availability of seeds and feed. Weakness were lack of public interest, lack of extension and human resources. Opportunity were the high value of the sale, business opportunities and local government regulation. Treat were dependence on fishing effort and safety. Keywords : hatchery, gumilamo, north halmahera, SWOT analysis

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Isolation, morphometry, and culture of Colurella sp. (Rotifera: Ploimida)

AQUATIC SCIENCE & MANAGEMENT ◽

10.35800/jasm.1.2.2013.7276 ◽

2013 ◽

Vol 1 (2) ◽

pp. 143

Author(s):

Petrus P Letsoin ◽

Henneke Pangkey ◽

Julius Sampekalo ◽

Inneke F.M Rumengan ◽

Stenly Wullur ◽

...

Keyword(s):

Body Size ◽

Marine Fish ◽

Fish Larvae ◽

Nannochloropsis Oculata ◽

Tropical Fish ◽

Sampling Location ◽

Larval Rearing ◽

Brachionus Rotundiformis ◽

Marine Fish Larvae ◽

Significant Difference

The rotifer Brachionus rotundiformis (total body length 240.59±10.24 μm, lorica length 175.28±9.18 μm, and lorica width 124.28±7.76μm) is commonly used as starter food in the larval rearing of marine fish. But, larvae of some marine tropical fish species required starter food with body size smaller than B. rotundiformis. The present study was aimed to isolate minute rotifers from nature and to assess the possibility of culturing these rotifers. Sampling of rotifers was conducted in an estuary of Mangket (Kema-Minut), using plankton net (mesh size 40 µm). A trial of culturing the rotifers was conducted at salinities of 10, 20 and 30 ppt by using a microalga, Nannochloropsis oculata. A species of rotifer identified as Colurella sp. (family Lepadellidae) was successfully isolated from the sampling location. Body size of Colurella sp. was extremely small (Total length 123.22±5.45 μm, lorica length 95.96±3.81 μm, and lorica width 53.57±3.11 μm), which were smaller than Brachionus rotundiformis SS-type as a conventional starter food for marine fish larvae. Results of culturing the minute rotifer Colurella sp. showed that the species grew well at salinities of 10, 20 and 30 ppt with no significant difference among treatments (ANOVA, p>0.05), indicating a potential use of minute rotifer Colurellasp. as starter food for marine fish larvae. Rotifera Branchionus rotundiformis (ukuran tubuh: panjang total 240,59±10,24 μm, panjang lorika 175,28±9,18 μm, dan lebar lorika 124,28±7,76μm) sering digunakan sebagai pakan awal pemeliharaan larva ikan laut. Namun, larva beberapa spesis ikan laut tropis membutuhkan pakan awal berukuran tubuh lebih kecil dari Branchionus rotundiformis. Penelitian ini bertujuan untuk mendapatkan minute rotifer dari alam (berukuran tubuh lebih kecil dari B. rotundiformis) dan menguji kemungkinan pemeliharaannya. Sampling rotifer dilakukan di perairan estuari Desa Mangket (Kema-Minut), menggunakan plankton net (ukuran mata jaring 40 µm). Uji coba pemeliharaan dilakukan pada salinitas (10, 20, dan 30 ppt) dengan menggunakan Nannochloropsis oculata. Satu spesies minute rotifer yang teridentifikasi sebagai Colurella sp. (family Lepadellidae) berhasil diisolasi dari lokasi sampling. Colurella sp. memiliki ukuran tubuh sangat kecil (panjang total [PT] 123,22±5,45 µm, panjang lorika [PL] 95,96±3,81 µm, dan lebar lorik [LL] 53,57±3,11 µm) yang mana lebih kecil dari Branchionus rotundiformis tipe-SS sebagai pakan awal larva ikan laut. Hasil uji coba pemeliharaan minute rotifer Colurella sp. menunjukkan bahwa spesis ini dapat tumbuh pada salinitas 10, 20, dan 30 ppt dengan perbedaan kepadatan populasi yang tidak signifikan antar perlakuan (Uji ANOVA, p > 0.05) mengindikasikan potensi pemanfaatan minute rotifer Colurella sp. sebagai pakan awal larva ikan laut.

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