Distribution of Clostridium perfringens in polluted lake environments
Φόρτωση...
Ημερομηνία
Συγγραφείς
Bezirtzoglou, E.
Panagiou, A.
Savvaidis, I.
Maipa, V.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Academic Press Ltd.
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Anaerobe
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
Many of the directives that relate to the prevention of pollution or the improvement of fresh water also relate to lake waters since lake waters ultimately inherit much of the pollution that enters into fresh water. In order to determine the influence of the water depth on Clostridium perfringens, we utilised a new medium, lactose-sulfite (LS) broth, suggested for rapid enumeration and identification of C, perfringens. Duplicate samples were collected at each one of the following sites of the polluted station: surface, 60cm, 90cm and bottom (1.18cm). Membrane filtration equipment was used. All samples were alternatively passed through two membrane filters, the first (20-25 mu m pore size) was used for retention of the abundant phytoplankton and the second (porosity 0.45 mu m) for C. perfringens. Membranes were placed into the first tube of ten-fold dilutions from 10(1) to 10(4) and incubated aerobically in a waterbath at 46 degrees C for 24h. The numbers of C. perfringens fluctuated depending on the water depth. Vegetative forms were found only in the bottom sampling; they were never found in surface, 60cm and 90cm sampling sites. Sporulated forms were found in all sampling sites with the exception of the surface sampling. Clostridium perfringens as an anaerobic bacterium never occurred in the surface waters in vegetative or spore forms, even if the waters were extremely polluted by domestic or industrial activities. Vegetative forms occurred only in the bottom samples but spore forms which are more resistant to various environmental effects occurred in all depths except for the surface. (C) 1997 Academic Press.
Περιγραφή
Λέξεις-κλειδιά
clostridium, clostridium perfringens, water, lake, ph, bacteria
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://A1997XW04900021
http://ac.els-cdn.com/S1075996497901013/1-s2.0-S1075996497901013-main.pdf?_tid=11e31f74d20f87195ba0e64f04adc36c&acdnat=1333040193_c29ea581eba01d0262f21e0778769d22
http://ac.els-cdn.com/S1075996497901013/1-s2.0-S1075996497901013-main.pdf?_tid=11e31f74d20f87195ba0e64f04adc36c&acdnat=1333040193_c29ea581eba01d0262f21e0778769d22
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας