Document Detail

Effects of avermectin residues in cattle dung on dung beetle (Coleoptera: Scarabaeidae) reproduction and survival.
MedLine Citation:
PMID:  8346627     Owner:  NLM     Status:  MEDLINE    
Scarabaeine dung beetles feeding on dung from cattle treated with an injection of avermectin at a therapeutic dose to control internal parasites, show larval mortality, mortality of immature adults, reduced egg production, and inhibited ovariole development for periods of 1-4 weeks following treatment. In winter rainfall regions of Australia, feeding by newly emerged adults of an introduced species, Onthophagus binodis, resulted in shredding of cattle dung between December and May. Production of brood masses and eggs resulted in dung being buried from September to November. Feeding by newly emerged adults of a native species, Onthophagus ferox, resulted in dung being buried in May and June, and production of brood masses for breeding resulted in dung burial between September and November. There are thus 2-6 months of the year when injection of cattle with avermectin would affect mortality of newly emerged beetles, and 3 months of the year when avermectin treatment of cattle would affect dung beetle oviposition or larval survival. Beetles were attracted to fresh dung for 2-4 days, and most had left the pad within a week. There are no data to indicate the effects of avermectin residues in dung on dung beetle populations and on beetle fitness. Tests should be done to determine if avermectins in slow release devices have a greater effect on dung beetles than injections, and to determine what effects both have on dung beetle populations.
T J Ridsdill-Smith
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Veterinary parasitology     Volume:  48     ISSN:  0304-4017     ISO Abbreviation:  Vet. Parasitol.     Publication Date:  1993 Jun 
Date Detail:
Created Date:  1993-09-09     Completed Date:  1993-09-09     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7602745     Medline TA:  Vet Parasitol     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  127-37     Citation Subset:  IM    
CSIRO Division of Entomology, Wembley, W.A., Australia.
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MeSH Terms
Anthelmintics / toxicity*
Beetles / physiology*
Biodegradation, Environmental
Feces / parasitology*
Ivermectin / analogs & derivatives*,  toxicity
Reproduction / drug effects
Time Factors
Reg. No./Substance:
0/Anthelmintics; 70288-86-7/Ivermectin; 73989-17-0/avermectin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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