Trematodes and nematodes parasitizing the benthic insect community of an Andean Patagonian stream, with emphasis on plagiorchiid metacercariae
Abstract In freshwater systems, parasitological studies have mainly been carried out on vertebrates and molluscs, but little is known about parasites of aquatic insects. We describe the trematodes and nematodes parasitizing the benthic insects of an Andean Patagonian stream and the presence of paras...
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crwiley:10.1111/ivb.12005 2024-09-09T19:09:18+00:00 Trematodes and nematodes parasitizing the benthic insect community of an Andean Patagonian stream, with emphasis on plagiorchiid metacercariae Mariluan, Gustavo D. Viozzi, Gustavo P. Albariño, Ricardo J. 2012 http://dx.doi.org/10.1111/ivb.12005 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fivb.12005 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ivb.12005 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Invertebrate Biology volume 131, issue 4, page 285-293 ISSN 1077-8306 1744-7410 journal-article 2012 crwiley https://doi.org/10.1111/ivb.12005 2024-06-20T04:25:52Z Abstract In freshwater systems, parasitological studies have mainly been carried out on vertebrates and molluscs, but little is known about parasites of aquatic insects. We describe the trematodes and nematodes parasitizing the benthic insects of an Andean Patagonian stream and the presence of parasites in the terrestrial adult stages. Members of 3 of 20 insect taxa were found to be parasitized by larval nematodes, and members of six taxa harbored metacercariae of digeneans. In benthic samples, chironomids, simuliids (Order Diptera), and baetids (Order Ephemeroptera) harbored mermithid larvae (Nematoda). The stonefly Antarctoperla michaelseni (Order Plecoptera), the caddisfly Smicridea annulicornis (Order Trichoptera), a watersnipe fly (Order Diptera: Athericidae), and three species of leptophlebiid mayflies (Order Ephemeroptera) were parasitized by encysted plagiorchiid metacercariae (Order Plagiorchiida). Most metacercariae were found in the three species of mayflies with prevalences ranging 15–63% and mean intensities ranging 1.2–4.9. Prevalence declined from summer to early winter, probably because of the emergence of infected nymphs and the recruitment of uninfected new cohorts. The imagos had live metacercariae with higher prevalences and intensities of infection than nymphs. We suggest that these plagiorchiids have an allogenic life cycle, involving a terrestrial definitive host. Article in Journal/Newspaper Antarc* Wiley Online Library Invertebrate Biology 131 4 285 293 |
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Wiley Online Library |
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English |
description |
Abstract In freshwater systems, parasitological studies have mainly been carried out on vertebrates and molluscs, but little is known about parasites of aquatic insects. We describe the trematodes and nematodes parasitizing the benthic insects of an Andean Patagonian stream and the presence of parasites in the terrestrial adult stages. Members of 3 of 20 insect taxa were found to be parasitized by larval nematodes, and members of six taxa harbored metacercariae of digeneans. In benthic samples, chironomids, simuliids (Order Diptera), and baetids (Order Ephemeroptera) harbored mermithid larvae (Nematoda). The stonefly Antarctoperla michaelseni (Order Plecoptera), the caddisfly Smicridea annulicornis (Order Trichoptera), a watersnipe fly (Order Diptera: Athericidae), and three species of leptophlebiid mayflies (Order Ephemeroptera) were parasitized by encysted plagiorchiid metacercariae (Order Plagiorchiida). Most metacercariae were found in the three species of mayflies with prevalences ranging 15–63% and mean intensities ranging 1.2–4.9. Prevalence declined from summer to early winter, probably because of the emergence of infected nymphs and the recruitment of uninfected new cohorts. The imagos had live metacercariae with higher prevalences and intensities of infection than nymphs. We suggest that these plagiorchiids have an allogenic life cycle, involving a terrestrial definitive host. |
format |
Article in Journal/Newspaper |
author |
Mariluan, Gustavo D. Viozzi, Gustavo P. Albariño, Ricardo J. |
spellingShingle |
Mariluan, Gustavo D. Viozzi, Gustavo P. Albariño, Ricardo J. Trematodes and nematodes parasitizing the benthic insect community of an Andean Patagonian stream, with emphasis on plagiorchiid metacercariae |
author_facet |
Mariluan, Gustavo D. Viozzi, Gustavo P. Albariño, Ricardo J. |
author_sort |
Mariluan, Gustavo D. |
title |
Trematodes and nematodes parasitizing the benthic insect community of an Andean Patagonian stream, with emphasis on plagiorchiid metacercariae |
title_short |
Trematodes and nematodes parasitizing the benthic insect community of an Andean Patagonian stream, with emphasis on plagiorchiid metacercariae |
title_full |
Trematodes and nematodes parasitizing the benthic insect community of an Andean Patagonian stream, with emphasis on plagiorchiid metacercariae |
title_fullStr |
Trematodes and nematodes parasitizing the benthic insect community of an Andean Patagonian stream, with emphasis on plagiorchiid metacercariae |
title_full_unstemmed |
Trematodes and nematodes parasitizing the benthic insect community of an Andean Patagonian stream, with emphasis on plagiorchiid metacercariae |
title_sort |
trematodes and nematodes parasitizing the benthic insect community of an andean patagonian stream, with emphasis on plagiorchiid metacercariae |
publisher |
Wiley |
publishDate |
2012 |
url |
http://dx.doi.org/10.1111/ivb.12005 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fivb.12005 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ivb.12005 |
genre |
Antarc* |
genre_facet |
Antarc* |
op_source |
Invertebrate Biology volume 131, issue 4, page 285-293 ISSN 1077-8306 1744-7410 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/ivb.12005 |
container_title |
Invertebrate Biology |
container_volume |
131 |
container_issue |
4 |
container_start_page |
285 |
op_container_end_page |
293 |
_version_ |
1809823568302702592 |