Study on the Intestinal Microflora of Salmonids

Yoshimizu, Mamoru; Kondo, Takahisa

doi:10.3147/jsfp.10.243

Cited by 134 publications

(61 citation statements)

References 20 publications

(27 reference statements)

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“…However, this trend of relation ship was hardly achieved in this study as in the results obtained by Yoshimizu and Kimura (1976) when genus Vibrio formed as the dominant species in the intestines of salmonids cultured in seawater. The present result suggests the selective propagation of Vibrio species in the intestines of milkfish larvae.…”

Section: Discussioncontrasting

confidence: 38%

“…To elucidate pathogenesis of these bacterial pathogens and assess the role of gastro intestinal microflora in several marine finfishes, intestinal microflora of larval and juvenile stages were investigated (Yoshimizu and Kimura, 1976;Muroga et al, 1987;Tanasomwang and Muroga, 1988). Results obtained varied each other showing that intestinal flora were influenced mainly by flora of food ingested and/or flora of the environment.…”

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confidence: 99%

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Bacterial Flora of Milkfish, Chanos chanos, Eggs and Larvae.

Fernandez¹,

Tendencia

Leaño

et al. 1996

Fish Pathol.

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Aerobic bacterial flora of eggs and larvae of milkfish, Chanos chanos, was investigated. Microflora in the incubating water of egg, rearing water of larvae, water source, and larval food was also analyzed.Aerobic bacterial flora of milkfish eggs was largely influenced by the bacterial flora in the incubating water. Both in eggs and in the incubating water Pseudomonas species were the dominant bacteria. During milkfish larval rearing, intestinal aerobic bacterial flora was examined at days 1, 3, 7, 10, 15, 18, and 21. Bacterial number in the larvae and rearing water significantly increased during the culture period up to day 18 but dropped significant at day 21. Pseudomonas species were detected from yolk-sac larvae (day 1) as the dominant bacteria, similarly to the normal flora in the rearing water. However, intestinal bacteria were predominated with Vibrio species when the yolk-sac was absorbed on day 3. Larval rearing water, water source, and larval food contained predominantly Pseudomonas species.

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Section: Discussioncontrasting

confidence: 38%

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confidence: 99%

Bacterial Flora of Milkfish, Chanos chanos, Eggs and Larvae.

Fernandez¹,

Tendencia

Leaño

et al. 1996

Fish Pathol.

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“…Indeed, the dominance of vibrios was not recorded until the end of the larval stage [64]. The comparative lack of diversity in larvae continues into older fish, and it has been suggested that the flora may be subjected to as-yetundescribed selective effects leading to a restricted number of taxa being present [48,65,66,67,68].…”

Section: Microflora In the Digestive Tractmentioning

confidence: 99%

“…A comparatively wide range of taxa have been associated with the digestive tract of adult freshwater fish, and include Acinetobacter, Enterobacter, Escherichia, Klebsiella, Proteus, Serratia [32], Aeromonas [32,33,37,57,69,70 [4], Bacteroides [3,71,72], Citrobacter freundii [29], Hafnia alvei [69], Cytophaga/Flexibacter [57], Bacillus, Listeria, Propionibacterium, Staphylococcus [29], Moraxella [38], and Pseudomonas [4,29,57,68]. In one study involving pike perch, it was concluded that Moraxella and Staphylococcus were unique to the habitat when compared with the digestive tract of other fish species [38].…”

Section: Microflora In the Digestive Tractmentioning

confidence: 99%

The Bacterial Microflora of Fish

Austin

2002

The Scientific World JOURNAL

102

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The results of numerous studies indicate that fish possess bacterial populations on or in their skin, gills, digestive tract, and light-emitting organs. In addition, the internal organs (kidney, liver, and spleen) of healthy fish may contain bacteria, but there is debate on whether or not muscle is actually sterile. The numbers and taxonomic composition of the bacterial populations often reflect those of the surrounding water. The role of the bacteria includes the ability to degrade complex molecules (therefore exercising a potential benefit in nutrition), to produce vitamins and polymers, and to be responsible for the emission of light by the light-emitting organs of deep-sea fish. Taxa, including Pseudomonas, may contribute to spoilage by the production of histamines in fish tissue.

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“…Of the 126 bacterial strains isolated previously (Kamei et al, 1987c(Kamei et al, , 1988b (Yoshimizu and Kimura, 1976) or SA (Yamamoto et al, 1982) medium, then inoculated into CYG (Kamei et al, 1988b) or MCYG was removed and each well was inoculated with 100 PFU/0.2 ml of IHNV and allowed the virus to adsorb to the cells for 1 h and washed three times with 1 ml of Hanks' BSS. A mixture of 9 : 1 of overlay medium and each bacterial culture filtrate was prepared and 1 ml of this mixture was overlayed into each well.…”

Section: Bacterial Strainsmentioning

confidence: 99%