Bacterial Flora in the Digestive Tract of Cultured Pacific Oyster.

2000 ◽  
Vol 35 (4) ◽  
pp. 173-177 ◽  
Author(s):  
Yoshisuke Iida ◽  
Rie Honda ◽  
Masato Nishihara ◽  
Kiyokuni Muroga
Keyword(s):  
Digestive Tract ◽  
Pacific Oyster ◽  
Bacterial Flora

Les osidases digestives de l'escargot Helix aspersa: localisations et variations en fonction de l'état nutritionnel

1992 ◽  
Vol 70 (11) ◽  
pp. 2234-2241 ◽  
Author(s):  
Maryvonne Charrier ◽  
Corinne Rouland
Keyword(s):  
Salivary Glands ◽  
Digestive Tract ◽  
Digestive Gland ◽  
Bacterial Flora ◽  
Helix Aspersa ◽  
Similar Distribution ◽  
Synergistic Activity

Osidases were studied in brown garden snails, Helix aspersa Müller, fed or starved for 4 or 7 weeks. The digestive tract was divided into seven regions: oesophagus, crop, stomach, intestine, rectum, salivary glands, and digestive gland. The results revealed the presence of a large number of enzymes that attack alimentary carbohydrates. However, α-heterosides and starch were poorly hydrolysed, and amylase was not derived from saliva. Enzymatic secretions continued in snails subjected to 7 weeks of starvation and accumulated in the stomach, while these enzymes were active mainly in the oesophagus and the crop during nutrition. Several hypotheses are presented, including that the most active enzymes, mannanases and cellulases, may be secreted both by the salivary glands and by the digestive gland. A similar distribution is postulated for two oligosaccharidases, maltase and saccharase. Since a bacterial flora exists in the digestive tract, we also consider the possibility of a synergistic activity between osidases from the snail and those originating from the microflora.

scholarly journals Isolasi Dan Identifikasi Bakteri Yang Terdapat Pada Saluran Pencernaan Ikan Gurami (Osphronemus gouramy) Dengan Pemberian Pakan Komersil Yang Berbeda [Isolation And Identification Of Bacterial In The Digestive Organ Of Gurami Fish (Osphronemus gouramy) With Different Commercial Feed]

2019 ◽  
Vol 6 (1) ◽  
pp. 87
Author(s):  
Franch Dalahi, Sri Subekti, Agustono
Keyword(s):  
Digestive Tract ◽  
Eating Habits ◽  
Bacterial Flora ◽  
Natural Food ◽  
Pseudomonas Sp ◽  
Isolation And Identification ◽  
Growth And Survival ◽  
Commercial Feed ◽  
Different Types ◽  
Identification Of Bacteria

Abstract Based on the food habits, gurami is omnivorous fish that feed herbivorous carp tend consists of natural food and artificial feed (pellets). The feed is needed to support the growth and survival of Gurami. If feed is given in accordance with the eating habits of Gurami and contain high nutritional Gurami can then growth accelerated faster. Some types of bacteria found in the digestive tract of animals has an important role in order to improve feed utilization, fish health, and environmental quality improvement and microorganisms. In addition, some bacterial flora in the gastrointestinal tract plays an important role and produce several types of enzymes in the digestive tract may contribute to the metabolism of the host. The purpose of this study was to determine the bacteria in the digestive tract of Gurami (Osphronemus gouramy) were given three different types of commercial feed. This study begins with a sampling of Gurami (Oshpronemus gouramy) of maintenance in the Faculty of Fisheries and Marine at Airlangga University in Surabaya and then do stage isolation and identification of bacteria in laboratory bacteria and Microbiology, Faculty of Veterinary Medicine, Airlangga University Surabaya. This study was conducted in July 2013. This research is a descriptive study, the method of solving the problem by describing the subject matter into a form that is easy to understand and based on facts. Results of research on gurami fish that given by three different types of commercial feed, there are two types of bacteria that dominate in the digestive tract of carp, the Pseudomonas sp. and Serratia sp. Both types of bacteria has the potential to help the digestive system of gurami fish. The result of this research are need for further research using the bacterium Pseudomonas sp. and Serratia sp. as probiotics.

scholarly journals Bacterial Flora in the Digestive Tract of Marine Fish-I

1972 ◽  
Vol 38 (1) ◽  
pp. 50-55 ◽  
Author(s):  
Hiroshi SERA ◽  
Masao KIMATA
Keyword(s):  
Digestive Tract ◽  
Marine Fish ◽  
Bacterial Flora

scholarly journals Digestive Tract Diseases and Infection: Intestinal Microbiology

2020 ◽  
pp. 1-2
Author(s):  
Eugenie Bergogne Berezin ◽  
Keyword(s):  
Digestive Tract ◽  
Bacterial Flora ◽  
Bifidobacterium Lactis ◽  
Immune Systems ◽  
Intestinal Microbiology ◽  
Esherichia Coli ◽  
Human Digestive Tract

Human digestive tract is one of the most important and vulnerable organ of the human functions. The digestive tract is formed of several anatomic sites which cooperate during digestive activities: those multiple anatomic sites possess microbiologic characteristics and each is capable to undergo pathologic conditions. In normal conditions, a natural bacterial flora is present in the digestive tract and constitutes a source of maturation of immune systems: Lactobacilli, Bifidobacterium lactis, Enterobacteriaceae, Esherichia coli, Proteus spp, anaerobes, are normal inhabitants of the gut.

scholarly journals Symbiosis of Aeromonas veronii Biovar sobria and Hirudo medicinalis, the Medicinal Leech: a Novel Model for Digestive Tract Associations

1999 ◽  
Vol 67 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Joerg Graf
Keyword(s):  
Digestive Tract ◽  
Bacterial Species ◽  
Bacterial Flora ◽  
Variable Region ◽  
Medicinal Leech ◽  
Hirudo Medicinalis ◽  
Bacterial Growth Rate ◽  
Culturable Bacterium ◽  
Aeromonas Veronii

ABSTRACT Hirudo medicinalis, the medicinal leech, is applied postoperatively in modern medicine. Infections by Aeromonasoccur in up to 20% of patients unless a preemptive antibiotic treatment is administered. The associated infections demonstrate the need for a better understanding of the digestive tract flora ofH. medicinalis. Early studies reported the presence of a single bacterial species in the digestive tract and suggested that these bacteria were endosymbionts contributing to the digestion of blood. In this study, we cultivated bacteria from the digestive tract and characterized them biochemically. The biochemical test results identified the isolates as Aeromonas veronii biovar sobria. This species identification was supported by sequence comparison of a variable region of the genes coding for 16S rRNA. In a colonization assay, a rifampin-resistant derivative of a symbiotic isolate was fed in a blood meal to H. medicinalis. The strain colonized the digestive tract rapidly and reached a concentration similar to that of the native bacterial flora. For the first 12 h, the in vivo doubling time was 1.2 h at 23°C. After 12 h, at a density of 5 × 107 CFU/ml, the increase in viable counts ceased, suggesting a dramatic reduction in the bacterial growth rate. Two human fecal isolates, identified as Aeromonas hydrophila and A. veronii biovar sobria, were also able to colonize the digestive tract. These data demonstrate that the main culturable bacterium in the crop of H. medicinalis isA. veronii biovar sobria and that the medicinal leech can be used as a model for digestive tract association ofAeromonas species.

Sign in / Sign up

Export Citation Format

Share Document