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Grazing of particle-associated bacteria-an elimination of the non-viable fraction BJM
Gonsalves,Maria-Judith; Fernandes,Sheryl Oliveira; Priya,Madasamy Lakshmi; LokaBharathi,Ponnapakkam Adikesavan.
Abstract Quantification of bacteria being grazed by microzooplankton is gaining importance since they serve as energy subsidies for higher trophic levels which consequently influence fish production. Hence, grazing pressure on viable and non-viable fraction of free and particle-associated bacteria in a tropical estuary controlled mainly by protist grazers was estimated using the seawater dilution technique. In vitro incubations over a period of 42 h showed that at the end of 24 h, growth coefficient (k) of particle-associated bacteria was 9 times higher at 0.546 than that of free forms. Further, ‘k’ value of viable cells on particles was double that of free forms at 0.016 and 0.007, respectively. While bacteria associated with particles were grazed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacteria; Ciliates; Grazing; Particle; Protists; Viable.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100037
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