Document Detail


Venom and cnidome ontogeny of the cubomedusae Chironex fleckeri.
MedLine Citation:
PMID:  23010166     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
This is the first study to explore venom and cnidome variation of individual cubomedusae, Chironex fleckeri, of different ages and from different regional locations in relation to feeding ecology. As medusae matured the proportion of mastigophores (those nematocysts containing the lethal venom component) in the cnidome increased, along with proportion of the vertebrate toxic fraction, in the venom profile. This switch in cnidome and venom occurred at the seven to ten tentacle stage. Whole venom was found to be toxic specifically to vertebrate cardiac cells, as opposed to vertebrate skeletal cells, and dose dependent, along with the vertebrate toxic fraction. The venom and cnidome ontogeny, along with venom toxicity, is correlated with C. fleckeri's known feeding ecology. Large and mature C. fleckeri feed predominantly on vertebrates, and have a greater proportion of mastigophores in their cnidome along with more vertebrate toxic fraction in their venom, compared to when they are young and small feeding on invertebrates.
Authors:
S McClounan; J Seymour
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-22
Journal Detail:
Title:  Toxicon : official journal of the International Society on Toxinology     Volume:  -     ISSN:  1879-3150     ISO Abbreviation:  Toxicon     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1307333     Medline TA:  Toxicon     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012. Published by Elsevier Ltd.
Affiliation:
School of Marine and Tropical Biology, James Cook University, McGregor Road, Cairns QLD 4878, Australia. Electronic address: sarah.mcclounan@my.jcu.edu.au.
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