English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Factors affecting preference responses of the freshwater ciliate Uronema nigricans to bacterial prey

Aya, B., Latatu, A., Artolozaga, I., Jürgens, K., & Iriberri, J. (2009). Factors affecting preference responses of the freshwater ciliate Uronema nigricans to bacterial prey. Journal of Eukaryotic Microbiology, 56(2), 188-193. doi:10.1111/j.1550-7408.2008.00387.x.

Item is

Files

show Files
hide Files
:
60973.pdf (Publisher version), 102KB
 
File Permalink:
-
Name:
60973.pdf
Description:
-
OA-Status:
Visibility:
Restricted (Max Planck Institute for Evolutionary Biology, MPLM; )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Aya, Begoña, Author
Latatu, Ainhoa, Author
Artolozaga, Itxaso, Author
Jürgens, Klaus1, Author           
Iriberri, Juan, Author
Affiliations:
1Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976547              

Content

show
hide
Free keywords: Aeromonas hydrophila; bacterial physiological stage; bacterivorous protist; feeding history; predator-prey interaction; preference index; Pseudomonas luteola; Serratia rubidaea
 Abstract: To enhance our understanding of the factors affecting feeding selectivity of bacterivorous protists in aquatic systems, we examined the preference responses of the freshwater ciliate Uronema nigricans towards three bacterial prey taxa, Pseudomonas luteola, Serratia rubidaea, and Aeromonas hydrophila. Potential factors influencing the predator-prey contact rate included the previous feeding history of the ciliate and physiological state of bacteria. Preference indexes were obtained from multiple-choice mazes in which ciliates moved preferentially towards alternative bacteria or the prey species on which they had been feeding. Uronema nigricans showed differential attraction towards the offered prey types, and these preferences varied as a function of the ciliate feeding history: U. nigricans growing on P. luteola showed lower preference responses towards the offered bacteria than U. nigricans growing on S. rubidaea. The bacteria in stationary phase elicited a higher degree of attraction than bacteria in exponential phase, probably due to a higher concentration of carbohydrates in the former. Therefore, this protist will preferentially swim towards bacteria in stationary growth phase, although the degree of this response will be affected by the recent feeding history of the ciliate.

Details

show
hide
Language(s): eng - English
 Dates: 2009-04
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 429751
DOI: 10.1111/j.1550-7408.2008.00387.x
Other: 2692/S 38993
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of Eukaryotic Microbiology
  Alternative Title : J. Eukaryot. Microbiol.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 56 (2) Sequence Number: - Start / End Page: 188 - 193 Identifier: ISSN: 1066-5234 (print)
ISSN: 1550-7408 (online)