Cargando…

The protective nature of Chironomus luridus larval tubes against copper sulfate.

The objective of this study was to determine whether the tubes in which Chironomus larvae dwell protect them against chemical toxicants. A laboratory culture of an Israeli benthic midge, Chironomus luridus, was exposed to copper sulfate. Two conditions were tested in bioassay experiments: larvae wit...

Descripción completa

Detalles Bibliográficos
Autores principales: Halpern, M., Gasith, A., Bresler, V.M., Broza, M.
Formato: Texto
Lenguaje:English
Publicado: University of Arizona Library 2002
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC355908/
https://www.ncbi.nlm.nih.gov/pubmed/15455042
_version_ 1782121244702801920
author Halpern, M.
Gasith, A.
Bresler, V.M.
Broza, M.
author_facet Halpern, M.
Gasith, A.
Bresler, V.M.
Broza, M.
author_sort Halpern, M.
collection PubMed
description The objective of this study was to determine whether the tubes in which Chironomus larvae dwell protect them against chemical toxicants. A laboratory culture of an Israeli benthic midge, Chironomus luridus, was exposed to copper sulfate. Two conditions were tested in bioassay experiments: larvae within silt tubes and larvae without tubes. The non toxic, anionic, fluorescent dye, fluorescein, was used to examine the effect of sub-lethal copper sulfate concentrations on the permeability of cuticular, gill and gut epithelia of the chironomids. Increased cell permeability, which is the cause of cell damage, was reflected by an increase in fluorescence intensity. Following exposure to copper sulfate, higher fluorescence was found in different body compartments: midgut, hindgut, tracheal gills, fat body and muscles, and the Malpighian tubules. The effect was significantly higher in tube-free larvae when compared to silt tube dwelling larvae. We conclude that in addition to its other functions in feeding, respiration, and anti-predation shelter, the Chironomus luridus tube protects its inhabitant from toxins such as copper sulfate.
format Text
id pubmed-355908
institution National Center for Biotechnology Information
language English
publishDate 2002
publisher University of Arizona Library
record_format MEDLINE/PubMed
spelling pubmed-3559082004-09-27 The protective nature of Chironomus luridus larval tubes against copper sulfate. Halpern, M. Gasith, A. Bresler, V.M. Broza, M. J Insect Sci Articles The objective of this study was to determine whether the tubes in which Chironomus larvae dwell protect them against chemical toxicants. A laboratory culture of an Israeli benthic midge, Chironomus luridus, was exposed to copper sulfate. Two conditions were tested in bioassay experiments: larvae within silt tubes and larvae without tubes. The non toxic, anionic, fluorescent dye, fluorescein, was used to examine the effect of sub-lethal copper sulfate concentrations on the permeability of cuticular, gill and gut epithelia of the chironomids. Increased cell permeability, which is the cause of cell damage, was reflected by an increase in fluorescence intensity. Following exposure to copper sulfate, higher fluorescence was found in different body compartments: midgut, hindgut, tracheal gills, fat body and muscles, and the Malpighian tubules. The effect was significantly higher in tube-free larvae when compared to silt tube dwelling larvae. We conclude that in addition to its other functions in feeding, respiration, and anti-predation shelter, the Chironomus luridus tube protects its inhabitant from toxins such as copper sulfate. University of Arizona Library 2002-05-10 /pmc/articles/PMC355908/ /pubmed/15455042 Text en Copyright © 2002. Open access; copyright is maintained by the authors.
spellingShingle Articles
Halpern, M.
Gasith, A.
Bresler, V.M.
Broza, M.
The protective nature of Chironomus luridus larval tubes against copper sulfate.
title The protective nature of Chironomus luridus larval tubes against copper sulfate.
title_full The protective nature of Chironomus luridus larval tubes against copper sulfate.
title_fullStr The protective nature of Chironomus luridus larval tubes against copper sulfate.
title_full_unstemmed The protective nature of Chironomus luridus larval tubes against copper sulfate.
title_short The protective nature of Chironomus luridus larval tubes against copper sulfate.
title_sort protective nature of chironomus luridus larval tubes against copper sulfate.
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC355908/
https://www.ncbi.nlm.nih.gov/pubmed/15455042
work_keys_str_mv AT halpernm theprotectivenatureofchironomusluriduslarvaltubesagainstcoppersulfate
AT gasitha theprotectivenatureofchironomusluriduslarvaltubesagainstcoppersulfate
AT breslervm theprotectivenatureofchironomusluriduslarvaltubesagainstcoppersulfate
AT brozam theprotectivenatureofchironomusluriduslarvaltubesagainstcoppersulfate
AT halpernm protectivenatureofchironomusluriduslarvaltubesagainstcoppersulfate
AT gasitha protectivenatureofchironomusluriduslarvaltubesagainstcoppersulfate
AT breslervm protectivenatureofchironomusluriduslarvaltubesagainstcoppersulfate
AT brozam protectivenatureofchironomusluriduslarvaltubesagainstcoppersulfate