English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Developmental inflexibility of larval tapeworms in response to resource variation

Benesh, D. P. (2010). Developmental inflexibility of larval tapeworms in response to resource variation. International Journal for Parasitology, 40(4), 487-497. doi:10.1016/j.ijpara.2009.10.001.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D4AD-D Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D4AE-B
Genre: Journal Article

Files

show Files
hide Files
:
benesh_2010.pdf (Publisher version), 320KB
 
File Permalink:
-
Name:
benesh_2010.pdf
Description:
-
Visibility:
Restricted (Max Planck Institute for Evolutionary Biology, Plön; )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Benesh, Daniel P.1, Author              
Affiliations:
1Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445634              

Content

show
hide
Free keywords: Calcareous corpuscles; Cercomer; Developmental threshold; Genetic constraint; Larval life history; Macrocyclops albidus; Phenotypic plasticity; Quantitative genetics
 Abstract: The timing of habitat switching in organisms with complex life cycles is an important life history characteristic that is often influenced by the larval growth environment. Under starvation, longer developmental times are frequently observed, probably as a consequence of developmental thresholds, but prolonged ontogeny sometimes also occurs under good conditions, as organisms may take advantage of the large potential gains in body size. I investigated whether variation in growth conditions affects the larval development time of a complex life cycle tapeworm (Schistocephalus solidus) in its copepod first host. Moreover, I reviewed patterns of developmental plasticity in larval tapeworms to assess the generality of my findings. Copepod starvation weakly retarded parasite growth but did not affect development. Worms grew bigger in larger copepods, but they developed at a similar rate in large and small hosts. Thus, S. solidus does not delay ontogeny under good conditions nor does it fail to reach a developmental threshold under poor conditions. Although unusual in comparison to free-living organisms, such inflexibility is common in tapeworms. Plasticity, namely prolonged ontogeny, has been mainly observed at high infection intensities. For S. solidus, there were large cross-environment genetic correlations for development, suggesting there may be genetic constraints on the evolution of developmental plasticity.

Details

show
hide
Language(s): eng - English
 Dates: 2010-03-15
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 478127
DOI: 10.1016/j.ijpara.2009.10.001
Other: 2757/S 39089
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: International Journal for Parasitology
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 40 (4) Sequence Number: - Start / End Page: 487 - 497 Identifier: ISSN: 0020-7519 (print)
ISSN: 1879-0135 (online)