Sensitivity of preparasitic stages of <i>Chordodes nobilii</i> (Gordiida, Nematomorpha) to malathion

The largest part of the life cycle of Gordiida, known as horsehair worms, occurs in aquatic environments usually affected by agricultural activities. The free-living adults reproduce in freshwater environments, where preparasitic larvae undergo development. Since malathion is an insecticide used in...

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Detalles Bibliográficos
Autores principales: Achiorno, Cecilia Luján, Villalobos, Leonor Cristina de, Ferrari, Lucrecia
Formato: Articulo
Lenguaje:Inglés
Publicado: 2009
Materias:
Ciencias Naturales
Nematomorpha
Chordodes nobilii
Malathion
Bioassays
Infection index
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/133967
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-133967
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Nematomorpha
Chordodes nobilii
Malathion
Bioassays
Infection index
spellingShingle Ciencias Naturales
Nematomorpha
Chordodes nobilii
Malathion
Bioassays
Infection index
Achiorno, Cecilia Luján
Villalobos, Leonor Cristina de
Ferrari, Lucrecia
Sensitivity of preparasitic stages of <i>Chordodes nobilii</i> (Gordiida, Nematomorpha) to malathion
topic_facet Ciencias Naturales
Nematomorpha
Chordodes nobilii
Malathion
Bioassays
Infection index
description The largest part of the life cycle of Gordiida, known as horsehair worms, occurs in aquatic environments usually affected by agricultural activities. The free-living adults reproduce in freshwater environments, where preparasitic larvae undergo development. Since malathion is an insecticide used in the distribution area of <i>Chordodes nobilii</i>, the aim of this study is to evaluate the effect of malathion concentrations which might be expected in the environment on preparasitic stages of this species. The embryonic development and the viability of larvae were analyzed after a short-term exposure to malathion concentrations ranging between 36 and 220 μg a.i./l. Embryo development was inhibited at 220 μg a.i./l and the infective capacity of larvae derived from malathion-exposed eggs was significantly decreased starting from the lowest concentration. Larvae developed from malathion-exposed eggs exhibited malformations. Directly exposed larvae also showed decreased infectivity since the lowest assayed concentration. Our results indicate that a short-term exposure to malathion at levels potentially present in the surface water in environments inhabited by <i>Chordodes nobilii</i> affects significantly its preparasitic stages and the infective capacity of parasitic larvae.
format Articulo
Articulo
author Achiorno, Cecilia Luján
Villalobos, Leonor Cristina de
Ferrari, Lucrecia
author_facet Achiorno, Cecilia Luján
Villalobos, Leonor Cristina de
Ferrari, Lucrecia
author_sort Achiorno, Cecilia Luján
title Sensitivity of preparasitic stages of <i>Chordodes nobilii</i> (Gordiida, Nematomorpha) to malathion
title_short Sensitivity of preparasitic stages of <i>Chordodes nobilii</i> (Gordiida, Nematomorpha) to malathion
title_full Sensitivity of preparasitic stages of <i>Chordodes nobilii</i> (Gordiida, Nematomorpha) to malathion
title_fullStr Sensitivity of preparasitic stages of <i>Chordodes nobilii</i> (Gordiida, Nematomorpha) to malathion
title_full_unstemmed Sensitivity of preparasitic stages of <i>Chordodes nobilii</i> (Gordiida, Nematomorpha) to malathion
title_sort sensitivity of preparasitic stages of <i>chordodes nobilii</i> (gordiida, nematomorpha) to malathion
publishDate 2009
url http://sedici.unlp.edu.ar/handle/10915/133967
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