The impact of Anguillicoloides crassus (Nematoda) on European eel swimbladder: histopathology and relationship between neuroendocrine and immune cells
Abstract The swimbladder functions as a hydrostatic organ in most bony fishes, including the European eel, Anguilla anguilla . Infection by the nematode Anguillicoloides crassus impairs swimbladder function, significantly compromising the success of the eel spawning migration. Swimbladders from 32 y...
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Cambridge University Press (CUP)
2021
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Online Access: | http://dx.doi.org/10.1017/s0031182021000032 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182021000032 |
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crcambridgeupr:10.1017/s0031182021000032 2024-09-09T19:00:41+00:00 The impact of Anguillicoloides crassus (Nematoda) on European eel swimbladder: histopathology and relationship between neuroendocrine and immune cells Dezfuli, Bahram Sayyaf Maestri, Chiara Lorenzoni, Massimo Carosi, Antonella Maynard, Barbara J Bosi, Giampaolo 2021 http://dx.doi.org/10.1017/s0031182021000032 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182021000032 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Parasitology volume 148, issue 5, page 612-622 ISSN 0031-1820 1469-8161 journal-article 2021 crcambridgeupr https://doi.org/10.1017/s0031182021000032 2024-06-19T04:02:46Z Abstract The swimbladder functions as a hydrostatic organ in most bony fishes, including the European eel, Anguilla anguilla . Infection by the nematode Anguillicoloides crassus impairs swimbladder function, significantly compromising the success of the eel spawning migration. Swimbladders from 32 yellow eels taken from Lake Trasimeno (Central Italy) were analysed by histopathology- and electron microscopy-based techniques. Sixteen eels (50%) harboured A. crassus in their swimbladders and intensity of infection ranged from 2 to 17 adult nematodes per organ (6.9 ± 1.6, mean ± s.e. ). Gross observations of heavily infected swimbladders showed opacity and histological analysis found a papillose aspect to the mucosa and hyperplasia of the lamina propria , muscularis mucosae and submucosa . Inflammation, haemorrhages, dilation of blood vessels and epithelial erosion were common in infected swimbladders. In the epithelium of parasitized swimbladders, many empty spaces and lack of apical junctional complexes were frequent among the gas gland cells. In heavily infected swimbladders, we observed hyperplasia, cellular swelling and abundant vacuolization in the apical portion of the gas gland cells. Numerous mast cells and several macrophage aggregates were noticed in the mucosal layer of infected swimbladders. We found more nervous and endocrine elements immunoreactive to a panel of six rabbit polyclonal antibodies in infected swimbladders compared to uninfected. Article in Journal/Newspaper Anguilla anguilla Cambridge University Press Parasitology 148 5 612 622 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
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English |
description |
Abstract The swimbladder functions as a hydrostatic organ in most bony fishes, including the European eel, Anguilla anguilla . Infection by the nematode Anguillicoloides crassus impairs swimbladder function, significantly compromising the success of the eel spawning migration. Swimbladders from 32 yellow eels taken from Lake Trasimeno (Central Italy) were analysed by histopathology- and electron microscopy-based techniques. Sixteen eels (50%) harboured A. crassus in their swimbladders and intensity of infection ranged from 2 to 17 adult nematodes per organ (6.9 ± 1.6, mean ± s.e. ). Gross observations of heavily infected swimbladders showed opacity and histological analysis found a papillose aspect to the mucosa and hyperplasia of the lamina propria , muscularis mucosae and submucosa . Inflammation, haemorrhages, dilation of blood vessels and epithelial erosion were common in infected swimbladders. In the epithelium of parasitized swimbladders, many empty spaces and lack of apical junctional complexes were frequent among the gas gland cells. In heavily infected swimbladders, we observed hyperplasia, cellular swelling and abundant vacuolization in the apical portion of the gas gland cells. Numerous mast cells and several macrophage aggregates were noticed in the mucosal layer of infected swimbladders. We found more nervous and endocrine elements immunoreactive to a panel of six rabbit polyclonal antibodies in infected swimbladders compared to uninfected. |
format |
Article in Journal/Newspaper |
author |
Dezfuli, Bahram Sayyaf Maestri, Chiara Lorenzoni, Massimo Carosi, Antonella Maynard, Barbara J Bosi, Giampaolo |
spellingShingle |
Dezfuli, Bahram Sayyaf Maestri, Chiara Lorenzoni, Massimo Carosi, Antonella Maynard, Barbara J Bosi, Giampaolo The impact of Anguillicoloides crassus (Nematoda) on European eel swimbladder: histopathology and relationship between neuroendocrine and immune cells |
author_facet |
Dezfuli, Bahram Sayyaf Maestri, Chiara Lorenzoni, Massimo Carosi, Antonella Maynard, Barbara J Bosi, Giampaolo |
author_sort |
Dezfuli, Bahram Sayyaf |
title |
The impact of Anguillicoloides crassus (Nematoda) on European eel swimbladder: histopathology and relationship between neuroendocrine and immune cells |
title_short |
The impact of Anguillicoloides crassus (Nematoda) on European eel swimbladder: histopathology and relationship between neuroendocrine and immune cells |
title_full |
The impact of Anguillicoloides crassus (Nematoda) on European eel swimbladder: histopathology and relationship between neuroendocrine and immune cells |
title_fullStr |
The impact of Anguillicoloides crassus (Nematoda) on European eel swimbladder: histopathology and relationship between neuroendocrine and immune cells |
title_full_unstemmed |
The impact of Anguillicoloides crassus (Nematoda) on European eel swimbladder: histopathology and relationship between neuroendocrine and immune cells |
title_sort |
impact of anguillicoloides crassus (nematoda) on european eel swimbladder: histopathology and relationship between neuroendocrine and immune cells |
publisher |
Cambridge University Press (CUP) |
publishDate |
2021 |
url |
http://dx.doi.org/10.1017/s0031182021000032 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182021000032 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
Parasitology volume 148, issue 5, page 612-622 ISSN 0031-1820 1469-8161 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0031182021000032 |
container_title |
Parasitology |
container_volume |
148 |
container_issue |
5 |
container_start_page |
612 |
op_container_end_page |
622 |
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1809941260309364736 |