Effect of environmental variables and their interaction on gordiid hairworm larvae (Nematomorpha)

The different stages of the life cycle of parasites are important components of ecosystems. Changes in environmental conditions may affect free-living stages, host–parasite interactions and ecosystem functioning. The larvae of Chordodes nobilii, which belongs to the parasitic phylum Nematomorpha, ar...

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Autores principales: Achiorno, Cecilia Luján, Minardi, Graciela, Ferrari, Lucrecia
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Biología
Infectivity
temperature
pH
time
interaction of variables
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/160140
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-160140
record_format dspace
spelling I19-R120-10915-1601402023-11-14T20:07:29Z http://sedici.unlp.edu.ar/handle/10915/160140 Effect of environmental variables and their interaction on gordiid hairworm larvae (Nematomorpha) Achiorno, Cecilia Luján Minardi, Graciela Ferrari, Lucrecia 2021 2023-11-14T16:30:59Z en Biología Infectivity temperature pH time interaction of variables The different stages of the life cycle of parasites are important components of ecosystems. Changes in environmental conditions may affect free-living stages, host–parasite interactions and ecosystem functioning. The larvae of Chordodes nobilii, which belongs to the parasitic phylum Nematomorpha, are susceptible to extreme temperatures and different pollutants, but the effects of pH and moderate temperature variations have not been evaluated yet. Our objective was to assess the effect of temperature, pH and their interaction on the infectivity of C. nobilii larvae to Aedes aegypti larvae over time. Larvae were treated with factorial combinations of temperature (18, 23 and 28°C), pH (7, 8 and 9) and time periods (24 and 48 h). Results show a highly significant interaction among all variables. The highest infectivity was recorded at 18°C and pH 7 at 24 and 48 h, and the lowest one at 28°C and pH 8 at 24 and 48 h. Infectivity differed significantly among the three temperatures only at pH 8 and 48 h, decreasing with increasing temperature. Our study is the first report of the effect of pH on a Nematomorpha species and suggests that the infectivity of C. nobilii larvae may be affected negatively by an increase in temperature and its interaction with pH and time. Since parasites must be considered for a better understanding of the effects of stressors on freshwater ecosystems, our results may help in the design and analysis of studies of anthropogenic impact. Centro de Estudios Parasitológicos y de Vectores Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Biología
Infectivity
temperature
pH
time
interaction of variables
spellingShingle Biología
Infectivity
temperature
pH
time
interaction of variables
Achiorno, Cecilia Luján
Minardi, Graciela
Ferrari, Lucrecia
Effect of environmental variables and their interaction on gordiid hairworm larvae (Nematomorpha)
topic_facet Biología
Infectivity
temperature
pH
time
interaction of variables
description The different stages of the life cycle of parasites are important components of ecosystems. Changes in environmental conditions may affect free-living stages, host–parasite interactions and ecosystem functioning. The larvae of Chordodes nobilii, which belongs to the parasitic phylum Nematomorpha, are susceptible to extreme temperatures and different pollutants, but the effects of pH and moderate temperature variations have not been evaluated yet. Our objective was to assess the effect of temperature, pH and their interaction on the infectivity of C. nobilii larvae to Aedes aegypti larvae over time. Larvae were treated with factorial combinations of temperature (18, 23 and 28°C), pH (7, 8 and 9) and time periods (24 and 48 h). Results show a highly significant interaction among all variables. The highest infectivity was recorded at 18°C and pH 7 at 24 and 48 h, and the lowest one at 28°C and pH 8 at 24 and 48 h. Infectivity differed significantly among the three temperatures only at pH 8 and 48 h, decreasing with increasing temperature. Our study is the first report of the effect of pH on a Nematomorpha species and suggests that the infectivity of C. nobilii larvae may be affected negatively by an increase in temperature and its interaction with pH and time. Since parasites must be considered for a better understanding of the effects of stressors on freshwater ecosystems, our results may help in the design and analysis of studies of anthropogenic impact.
format Articulo
Articulo
author Achiorno, Cecilia Luján
Minardi, Graciela
Ferrari, Lucrecia
author_facet Achiorno, Cecilia Luján
Minardi, Graciela
Ferrari, Lucrecia
author_sort Achiorno, Cecilia Luján
title Effect of environmental variables and their interaction on gordiid hairworm larvae (Nematomorpha)
title_short Effect of environmental variables and their interaction on gordiid hairworm larvae (Nematomorpha)
title_full Effect of environmental variables and their interaction on gordiid hairworm larvae (Nematomorpha)
title_fullStr Effect of environmental variables and their interaction on gordiid hairworm larvae (Nematomorpha)
title_full_unstemmed Effect of environmental variables and their interaction on gordiid hairworm larvae (Nematomorpha)
title_sort effect of environmental variables and their interaction on gordiid hairworm larvae (nematomorpha)
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/160140
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