English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  What is responsible for the variance in life history traits of a South American semi-aquatic grasshopper (Cornops aquaticum)? A test of three possible hypotheses

Brede, E. G., Adis, J., & Schneider, P. (2007). What is responsible for the variance in life history traits of a South American semi-aquatic grasshopper (Cornops aquaticum)? A test of three possible hypotheses. Studies on Neotropical Fauna and Environment, 42(3), 225-233. doi:10.1080/01650520701414441.

Item is

Files

show Files
hide Files
:
brede_2007.pdf (Publisher version), 385KB
 
File Permalink:
-
Name:
brede_2007.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:
Brede, Edward G.1, Author           
Adis, Joachim1, Author           
Schneider, Paula, Author
Affiliations:
1Working Group Tropical Ecology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976549              

Content

show
hide
Free keywords: Acrididae; Cornops; genetic; microsatellite; phenotype; plasticity
 Abstract: The semi-aquatic grasshopper Cornops aquaticum (Bruner, 1906) is native to South America, with a distribution from the Argentinian pampas to the Gulf of Mexico, and is currently being proposed as a biological control agent for the invasive water hyacinth (Eichhornia crassipes) in South Africa. This study reports results of a neutral molecular marker (microsatellites) study on C. aquaticum within its native range. The data were analysed for levels of diversity and structure within/between South American populations, and correlations between host plant, geography and environmental/climatic variables were investigated. We found no evidence to support associations between host plant use and microsatellite genotypes (hypothesis 1). High levels of gene flow and weak genetic clustering of populations indicate a lack of differentiation, therefore an interaction between climate and local genotype (hypothesis 2) seems unlikely. Our results suggest that C. aquaticum may not have "tightly" coevolved with its host Eichhornia spp. (Pontederiaceae) as originally thought, and that instar variation might be due to the effect of local climate on phenotype (hypothesis 3) or possibly a locally adaptive trait.

Details

show
hide
Language(s): eng - English
 Dates: 2007-12
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 332243
DOI: 10.1080/01650520701414441
Other: 2590/S 38751
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Studies on Neotropical Fauna and Environment
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 42 (3) Sequence Number: - Start / End Page: 225 - 233 Identifier: ISSN: 0165-0521 (print)
ISSN: 1744-5140 (online)