Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2002-5-15
pubmed:abstractText
Amber disease in the New Zealand grass grub (Costelytra zealandica) is caused by some strains of Serratia entomophila or Serratia proteamaculans (Enterobacteriaceae). When treated with pathogenic isolates, larvae ceased feeding within 48 h, developed an amber coloration after 72 h, and entered a long chronic phase without feeding. An acute dose of 2-4 x 10(4) pathogenic bacteria was sufficient to produce disease in 50% of treated larvae. Time to death was directly related to temperature. At 15 degrees C, infected larvae remained in a chronic, nonfeeding state for more than 4 months prior to death. Nonpathogenic isolates, lacking the disease-causing plasmid (pADAP), had no effect on either feeding or disease. Twenty-four hours after ingestion, bacteria were found predominantly in the hindgut and growth occurred primarily within the fermentation chamber and in the head section of the larvae. Nonpathogenic strains did not multiply in treated larvae. Treatment of diseased larvae with antibiotic eliminated Serratia cells from the insects but did not result in restoration of feeding or the dark gut characteristic of the healthy larva.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0022-2011
pubmed:author
pubmed:issnType
Print
pubmed:volume
78
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
232-43
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Pathobiology of amber disease, caused by Serratia Spp., in the New Zealand grass grub, Costelytra zealandica.
pubmed:affiliation
AgResearch, Lincoln, New Zealand. trevor.jackson@agresearch.co.nz
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't