Marine Microorganisms Associated with the Food of Young Salmon

Seki, Humitake

doi:10.1128/aem.17.2.252-255.1969

Cited by 19 publications

(13 citation statements)

References 9 publications

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“…The bacterial genera present within the alimentary tract may possibly be a reflection of those genera present on the food ingested (Shewan, 1961;Seki, 1969). After examining 11 species of fish from the North Atlantic, Gibbons (1934) concludedthat the bacterial floras of the skin and faeces were similar; members of the genera Achromobacter and Micrococcus were the most numerous strains present.…”

Section: R W Horsleymentioning

confidence: 99%

A review of the bacterial flora of teleosts and elasmobranchs, including methods for its analysis

Horsley

1977

Journal of Fish Biology

130

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Techniques for the quantitative and qualitative analysis of the commensal bacterial flora of fish are reviewed. The literature concerning the commensal bacterial flora of fish indicates that teleost skin often features 10a-107 organisms per cm2 of skin, representing the following taxa, in descending numerical order, Achromobacter, Pseudomonas, Flavobacterium and Cytoghaga species also coryneform organisms. Actively feeding teleosts appear to have an alimentary canal bacterial flora similar to that of the skin and gills, often there are from 10s-108 organisms per 1.0 g, wet weight, of tissue. According to the limited data available for elasmobranchs Gram-positive bacteria are the predominant component of the bacterial flora on the skin of sharks, though the bacterial flora of North Sea skate (Raja spp.) is reported as being similar to that of teleosts. The commensal flora of fish, particularly of teleosts, is related t o their environment and is influenced by environmental changes that affect the quality of the water. Regular monitoring of the water of commercial fish ponds and aquaria for bacterial quality, temperature, dissolved oxygen concentration and pH, combined with a base-line knowledge of the water's quality, may provide an advanced indication of the presence of bacteria potentially able to produce diseased conditions, and factors that will enhance their growth.

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Section: R W Horsleymentioning

confidence: 99%

A review of the bacterial flora of teleosts and elasmobranchs, including methods for its analysis

Horsley

1977

Journal of Fish Biology

130

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“…Aquatic bacteria belong to a large diversity of taxonomic groups. According to Seki (1969), only 30% of the bacteria in aquatic systems are found as free-living bacteria. The majority are found as aggregates around an organic core (dead organisms, faecal pellets, molts of zooplankton, living phyto-and zooplankton (Porter et al 1983;Crump & Baross 1996;Selmi 2001;Grossart 2010;Tang et al 2010), as well as around an inorganic core, such as clay particles (Attramadal et al 2012) that tend to sink (i.e.…”

Section: Introductionmentioning

confidence: 99%

Bacteria as food in aquaculture: do they make a difference?

Nevejan

Schryver

Wille

et al. 2016

Reviews in Aquaculture

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Bacterioplankton is an important component of marine as well as fresh waters and accounts for a large fraction of the production of particulate matter in those ecosystems. The concept of bacteria as providers of essential nutrients in aquatic food webs has been raised most recently in relation to the utilization of bacteria as a food source in aquaculture food chains. This article represents a comprehensive review on the potential role of bacteria as a direct food source for aquaculture organisms. After studying shortly the analytical tools that can be applied to determine the uptake and assimilation of bacteria by higher trophic levels, it describes the bacterial loads that are found in closed and open aquaculture systems and elaborates on the composition of bacteria from a nutritional point of view. Next this study elaborates in more detail on the role of bacteria as food for the zooplankton groups used as live food in aquaculture hatcheries and for various groups of aquaculture target organisms, such as fish, crustaceans and especially bivalves. This includes an assessment of the specific uptake mechanisms of the different taxonomic groups of interest in relation to their efficiency to ingest bacteria. Finally, future research lines are suggested to elucidate the nutritional impact of the bacterial community in aquaculture systems and how to steer this in order to optimize the production.

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“…Several authors described how the intestinal microflora of fish was related to the microbial composition of the food ingested and of the water (Seki 1969;Tanasomwang and Muroga 1988;Blanch et al 1997). Others reported that the bacterial microbiota of farmed fish were not consistent with those in the water or the diet of the fish (Campbell and Buswell 1983;Muroga et al 1987;Nicolas et al 1989;Montes et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Comparison ofVibriospp. populations found in seawater, in exhibition aquaria, in fish intestine and in fish feed

Blanch

Hispano²,

Bultó³

et al. 2009

Journal of Applied Microbiology

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Aims: Vibrio populations in the seawater supply and the water of seven exhibition aquaria that simulate various Mediterranean and tropical ecosystems were compared. The similarity of Vibrio populations in the intestine of various fish species, feed and water was examined. Resistance to the antibiotics used in fish health management was analysed for the dominant Vibrio isolates. Methods and Results: Samples were collected for 1 year from seven exhibition tanks reproducing different ecosystems. The diversity and population similarity among vibrios were determined using a miniaturized biochemical phenotyping method. Similar Vibrio populations were found in the water supply and in the water of the Mediterranean ecosystems. However, different Vibrio populations were found in the water of tanks with tropical ecosystems. Vibrio populations in the water seemed to have a greater effect on the composition of intestinal Vibrio populations than those in feed. No resistance to antibiotics was observed, indicating their appropriate use for health management. Conclusions: Water characteristics have a greater impact on the composition of Vibrio populations in aquaria and fish intestinal microbiota than bacteria in feed. Significance and Impact of the Study: The microbiological monitoring water could provide valuable information for managing the health of exhibition aquaria.

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Marine Microorganisms Associated with the Food of Young Salmon

Cited by 19 publications

References 9 publications

A review of the bacterial flora of teleosts and elasmobranchs, including methods for its analysis

A review of the bacterial flora of teleosts and elasmobranchs, including methods for its analysis

Bacteria as food in aquaculture: do they make a difference?

Comparison ofVibriospp. populations found in seawater, in exhibition aquaria, in fish intestine and in fish feed

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