Studies on the Bacterial Flora in the Intestines of Various Marine Fish

Okuzumi, Masayo; Horie, Susumu

doi:10.2331/suisan.35.93

Cited by 14 publications

(8 citation statements)

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“…Most of the isolates speciated were Vibrio spp. which confirms reports that this genus generally predominates in the microflora of marine fish (Aiso et al, 1968, Okuzumi & Horie, 1969, Sakata et af., 1978a The fasting fish did not possess similar microflora, either quantitatively or qualitatively, despite sharing the same environment for 34 days. This indicates that the digestive tract microflora in adult fish does not reflect the environmental or dietary microflora but is specialized.…”

Section: Discussionsupporting

confidence: 91%

Chitinolytic enzymes and the bacterial microflora in the digestive tract of cod, Gadus morhua

Lindsay

Gooday

1985

Journal of Fish Biology

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The levels of chitinolytic enzymes and chitinolytic bacteria in the digestive tract of feeding and fasting cod were compared. Enzyme activities within a given tissue were of a similar order irrespective of the presence of chitinolytic bacteria and/or chitin. Cod chitinase and chitobiase are therefore endogenous and constitutive enzymes. Fasting cod had similar numbers of bacteria within the gastro-intestinal compartments as feeding fish. Representative bacterial isolates from fasting fish were characterized.

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Section: Discussionsupporting

confidence: 91%

Chitinolytic enzymes and the bacterial microflora in the digestive tract of cod, Gadus morhua

Lindsay

Gooday

1985

Journal of Fish Biology

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“…This finding suggested the presence of microflora was also specific for the intestines of marine fish. This result agrees with the reports of Liston (1954Liston ( , 1957, Okuzumi and Horie (1969), Kaneko (1971a, b, and c), Sera and Kimata (1972), Ishida (1972a andb), and, which indicated the predominance of genus Vibrio in the microflora of the intestines of marine fish, and the reports of Colwell (1962), Shrivastava andFloodgate (1966), andNewman et at. (1972), which indicated a higher frequency of the genus Vibrio in the micro flora of fish intestines than in the flora of fish living environments.…”

Section: Discussionsupporting

confidence: 83%

“…Bacterial flora on the body surface and gills are unlike the specific bacteria to be found in the intestinal flora of fish in general as many papers reported before (Liston 1954(Liston , 1957Spencer 1961;Aiso et al 1968;Okuzumi and Horie 1969;Chung and Kou 1973;Trust 1974). However for many years, there has been suport for the view that fish do not have any specific bacterial flora normally existing in the intestines (Obst 1919;Margolis 1953;Sorimachi and Egusa 1971).…”

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confidence: 91%

Study on the Intestinal Microflora of Salmonids

1976

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“…The predominance of Vibrio and Aeromonus spp. in the digestive tract of oysters has also been observed in fish (Okuzumi & Horie 1968;Sera et al 1974), prawns (Yasuda & Kitao 1980 and possibly in other bivalve shellfish (Sugita et al 1981). The successful establishment of Vibrio spp.…”

Section: Discussionmentioning

confidence: 91%

Bacteria in bivalve shellfish with special reference to the oyster

Kueh

Chan

1985

Journal of Applied Bacteriology

106

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The bacterial flora of the Pacific oyster Crassostrea gigas, the sea mussel Perna viridis and the arkshell clam Scapharca cornea differed considerably from that of seawater in both numbers and generic composition. The numbers of heterotrophic bacteria in the bivalve shellfish, including the anaerobes and spore-forming bacteria, were greater than that in the surrounding water. Pseudomonas spp. were the dominant organisms, comprising over one third of the 321 strains characterized after isolation from the bivalves and seawater. Other bacteria isolated from the shellfish included Vibrio, Acinetobacter, and Aeromonas spp., whereas the seawater flora consisted mainly of coliform organisms, coryneform bacteria and Flavobacterium/Cytophaga spp. Bacteria associated with the deposit-feeding clams were higher in density and more distinct in generic composition as compared with those in the suspension-feeding oysters and mussels. Over 90% of the coliform and heterotrophic bacteria in oysters were found in organs associated with the digestive tract. Coliforms were mainly found in the stomach while heterotrophs were present in both stomach and the lower intestine. The results suggest that the stomach flora of oysters are mainly derived from the external environment and, through a process of selection and multiplication, that it may be gradually replaced by a more indigenous population which dominates the lower digestive tract.

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Studies on the Bacterial Flora in the Intestines of Various Marine Fish

Cited by 14 publications

References 0 publications

Chitinolytic enzymes and the bacterial microflora in the digestive tract of cod, Gadus morhua

Chitinolytic enzymes and the bacterial microflora in the digestive tract of cod, Gadus morhua

Study on the Intestinal Microflora of Salmonids

Bacteria in bivalve shellfish with special reference to the oyster

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