English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
 
 
DownloadE-Mail
  Grazer-induced changes in the desmid Staurastrum

Wiltshire, K., Boersma, M., & Meyer, B. (2003). Grazer-induced changes in the desmid Staurastrum. Recent Developments in Fundamental and Applied Plankton Research, 255-260.

Item is

Files

show Files
hide Files
:
Wiltshire_etal_2003.pdf (Publisher version), 129KB
 
File Permalink:
-
Name:
Wiltshire_etal_2003.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:
Wiltshire, Karen1, Author           
Boersma, Maarten1, Author           
Meyer, Barbara1, 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: food quality; Daphnia; kairomone
 Abstract: In aquatic environments, predator kairomones have been shown to affect morphology of prey species. Past work on the interaction between zooplankton and phytoplankton was based mainly on the Daphnia - Scenedesmus model. Algae of the genus Staurastrum can producemucilage, causing cell clumping and settling out of the water column. These clumps are too large to be eaten by daphniids. Thus, we hypothesised that this may be a grazer defence. We investigated whether Daphnia magna induces the formation of mucus globules in Staurastrum, how this occurs, and if the formation of clumps inhibits growth in juvenile Daphnia. Eight strains of Staurastrum were used to check whether mucus extrusion is induced by the presence of Daphnia or possibly by a chemical excreted by Daphnia magna. None of the strains reacted to the presence of Daphnia water alone, animals had to be present to induce clumping. Mechanical action ( gentle stirring) caused the same strains to clump. The ecological relevance of clumping was then investigated. The different Staurastrum strains were used as food in a growth experiment with ecologically relevant densities of neonates of Daphnia hyalina. These small daphniids did not cause the same clumping observed for Daphnia magna when present in experiments at high densities. We observed that juvenile daphniids grew less well on strains with larger cell size.

Details

show
hide
Language(s): eng - English
 Dates: 2003-01
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 35625
ISI: 000183771600023
Other: 2207/S 37941
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Recent Developments in Fundamental and Applied Plankton Research
Source Genre: Issue
 Creator(s):
van Donl, E., Editor
Boersma, M.1, Editor           
Spaak, P.1, Editor           
Affiliations:
1 Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976547            
Publ. Info: -
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 255 - 260 Identifier: -

Source 2

show
hide
Title: Hydrobiologia
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Springer Nature
Pages: - Volume / Issue: 491 (1-3) Sequence Number: - Start / End Page: - Identifier: ISSN: 0018-8158
CoNE: https://pure.mpg.de/cone/journals/resource/954925565693