Environmental effects of mosquito insecticides on saltmarsh invertebrate fauna

Russell, T. L., Kay, B. H. and Skilleter, Gregory A. (2009) Environmental effects of mosquito insecticides on saltmarsh invertebrate fauna. Aquatic Biology, 6 1-3: 77-90. doi:10.3354/ab00156


Author Russell, T. L.
Kay, B. H.
Skilleter, Gregory A.
Title Environmental effects of mosquito insecticides on saltmarsh invertebrate fauna
Journal name Aquatic Biology   Check publisher's open access policy
ISSN 1864-7782
1864-7790
Publication date 2009-07
Year available 2009
Sub-type Article (original research)
DOI 10.3354/ab00156
Open Access Status DOI
Volume 6
Issue 1-3
Start page 77
End page 90
Total pages 14
Place of publication Germany
Publisher Inter-Research
Collection year 2010
Language eng
Formatted abstract
Despite the fact that Bacillus thuringiensis var. israelensis de Barjac (Bti) and s-methoprene are considered to be among the most target-specific of insecticides, there are some indications that non-target organisms may be impacted in different ecosystems. We examined the effects of Bti and s-methoprene on non-target aquatic and terrestrial fauna in 2 subtropical saltmarshes approximately 30 km apart. The main taxa collected from ephemeral pools were copepods and from terrestrial plots were springtails (Collembola), mites (Acariformes) and ants (Hymenoptera), with smaller numbers of beetles (Coleoptera), true bugs (Heteroptera) and flies (Diptera). Following applications of both products, inconsistent short-term (<20 d) differences in the composition of the arthropod community were noted. After applications of Bti to ephemeral pools, smaller numbers of copepods were recorded but at only one locality. There were no significant effects of s-methoprene on the arthropods in ephemeral pools at either locality. The numbers of mites increased in terrestrial plots after applications of s-methoprene at both localities and Bti at one locality, but these effects were short-lived and varied depending on which specific habitat was sampled (i.e. vegetation or sediment surface). There were few significant effects on any other taxa and these effects were also localised and short-lived. These results suggest that applications of Bti and s-methoprene do not impact the abundance and composition of non-target arthropod assemblages in subtropical saltmarshes, although more work on potential sub-lethal effects of the insecticides is needed.
Keyword Bacillus thuringiensis var. israelensis
Bti
s-methoprene
Mosquito control
Saltmarsh
Ecolgical impacts
Australia
Copepoda
Acariformes
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Biological Sciences Publications
Ecology Centre Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 9 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 12 times in Scopus Article | Citations
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Created: Tue, 10 Nov 2009, 13:13:47 EST by Hayley Ware on behalf of School of Biological Sciences