Enterogyrus spp. (Monogenea: Ancyrocephalinae) and Aeromonas jandaei co-infection associated with high mortality following transport stress in cultured Nile tilapia
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1111/tbed.14295 http://hdl.handle.net/11449/229475 |
Resumo: | Monogenean infection of the internal organs is extremely rare when compared to external infections. This study describes mass mortality of Nile tilapia (Oreochromis niloticus L.) originating from co-infection with Enterogyrus spp. and Aeromonas jandaei following transport stress. The first fish deaths occurred on day 1 post-transport, while cumulative mortality reached approximately 90% by day 10 post-stocking. An atypical amount of pale (whitish) faeces floating on the surface of the water as well as typical clinical signs of motile Aeromonas septicemia, were reported. Adult monogeneans and countless eggs of monogeneans were found in the stomachs and the intestines of both moribund and dead fish, respectively. Two strains of A. jandaei were isolated from the kidneys. Scanning electron microscope microphotographs of the stomach revealed the presence of numerous monogeneans penetrating deep into the gastric tissue, and diffuse lesions filled with bacilliform bacteria. Histopathological examination showed multifocal eosinophilic infiltrate, gastric gland and epithelial necrosis with sloughed necrotic debris in the lumen. This is the first report of co-infection by Enterogyrus spp. and A. jandaei in Nile tilapia and the first report of Enterogyrus coronatus, Enterogyrus foratus, and Enterogyrus malbergi parasitizing tilapia in Brazil. These findings indicate that synergic co-infection by Monogenean stomach parasites (E. coronatus, E. foratus, and E. malbergi) and A. jandaei may induce high mortalities in tilapia following transport stress. |
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Enterogyrus spp. (Monogenea: Ancyrocephalinae) and Aeromonas jandaei co-infection associated with high mortality following transport stress in cultured Nile tilapiaco-infectionmass mortalitymonogenea infectionmotile Aeromonas septicemiaNile tilapiatransport stressMonogenean infection of the internal organs is extremely rare when compared to external infections. This study describes mass mortality of Nile tilapia (Oreochromis niloticus L.) originating from co-infection with Enterogyrus spp. and Aeromonas jandaei following transport stress. The first fish deaths occurred on day 1 post-transport, while cumulative mortality reached approximately 90% by day 10 post-stocking. An atypical amount of pale (whitish) faeces floating on the surface of the water as well as typical clinical signs of motile Aeromonas septicemia, were reported. Adult monogeneans and countless eggs of monogeneans were found in the stomachs and the intestines of both moribund and dead fish, respectively. Two strains of A. jandaei were isolated from the kidneys. Scanning electron microscope microphotographs of the stomach revealed the presence of numerous monogeneans penetrating deep into the gastric tissue, and diffuse lesions filled with bacilliform bacteria. Histopathological examination showed multifocal eosinophilic infiltrate, gastric gland and epithelial necrosis with sloughed necrotic debris in the lumen. This is the first report of co-infection by Enterogyrus spp. and A. jandaei in Nile tilapia and the first report of Enterogyrus coronatus, Enterogyrus foratus, and Enterogyrus malbergi parasitizing tilapia in Brazil. These findings indicate that synergic co-infection by Monogenean stomach parasites (E. coronatus, E. foratus, and E. malbergi) and A. jandaei may induce high mortalities in tilapia following transport stress.Post-graduate program in Aquaculture Laboratory of Microbiology and Parasitology of Aquatic Organisms São Paulo State University (Unesp) Aquaculture Center of UnespFaculdade de Ciências Agrárias Universidade Zambeze (UniZambeze)Postgraduate Program in Aquaculture Nilton Lins UniversityGraduate Program in Agricultural and Livestock Microbiology Laboratory of Microbiology and Parasitology of Aquatic Organisms São Paulo State University (UNESP) School of Agricultural and Veterinarian SciencesPost-graduate program in Aquaculture Laboratory of Microbiology and Parasitology of Aquatic Organisms São Paulo State University (Unesp) Aquaculture Center of UnespGraduate Program in Agricultural and Livestock Microbiology Laboratory of Microbiology and Parasitology of Aquatic Organisms São Paulo State University (UNESP) School of Agricultural and Veterinarian SciencesUniversidade Estadual Paulista (UNESP)Universidade Zambeze (UniZambeze)Nilton Lins UniversityAssane, Inácio Mateus [UNESP]Prada-Mejia, Karen Dayana [UNESP]Gallani, Sílvia UmedaWeiser, Natasha Fernandes [UNESP]Valladão, Gustavo Moraes RamosPilarski, Fabiana [UNESP]2022-04-29T08:32:42Z2022-04-29T08:32:42Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1111/tbed.14295Transboundary and Emerging Diseases.1865-16821865-1674http://hdl.handle.net/11449/22947510.1111/tbed.142952-s2.0-85114400219Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengTransboundary and Emerging Diseasesinfo:eu-repo/semantics/openAccess2024-04-09T15:36:42Zoai:repositorio.unesp.br:11449/229475Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:19:09.842175Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Enterogyrus spp. (Monogenea: Ancyrocephalinae) and Aeromonas jandaei co-infection associated with high mortality following transport stress in cultured Nile tilapia |
title |
Enterogyrus spp. (Monogenea: Ancyrocephalinae) and Aeromonas jandaei co-infection associated with high mortality following transport stress in cultured Nile tilapia |
spellingShingle |
Enterogyrus spp. (Monogenea: Ancyrocephalinae) and Aeromonas jandaei co-infection associated with high mortality following transport stress in cultured Nile tilapia Assane, Inácio Mateus [UNESP] co-infection mass mortality monogenea infection motile Aeromonas septicemia Nile tilapia transport stress |
title_short |
Enterogyrus spp. (Monogenea: Ancyrocephalinae) and Aeromonas jandaei co-infection associated with high mortality following transport stress in cultured Nile tilapia |
title_full |
Enterogyrus spp. (Monogenea: Ancyrocephalinae) and Aeromonas jandaei co-infection associated with high mortality following transport stress in cultured Nile tilapia |
title_fullStr |
Enterogyrus spp. (Monogenea: Ancyrocephalinae) and Aeromonas jandaei co-infection associated with high mortality following transport stress in cultured Nile tilapia |
title_full_unstemmed |
Enterogyrus spp. (Monogenea: Ancyrocephalinae) and Aeromonas jandaei co-infection associated with high mortality following transport stress in cultured Nile tilapia |
title_sort |
Enterogyrus spp. (Monogenea: Ancyrocephalinae) and Aeromonas jandaei co-infection associated with high mortality following transport stress in cultured Nile tilapia |
author |
Assane, Inácio Mateus [UNESP] |
author_facet |
Assane, Inácio Mateus [UNESP] Prada-Mejia, Karen Dayana [UNESP] Gallani, Sílvia Umeda Weiser, Natasha Fernandes [UNESP] Valladão, Gustavo Moraes Ramos Pilarski, Fabiana [UNESP] |
author_role |
author |
author2 |
Prada-Mejia, Karen Dayana [UNESP] Gallani, Sílvia Umeda Weiser, Natasha Fernandes [UNESP] Valladão, Gustavo Moraes Ramos Pilarski, Fabiana [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade Zambeze (UniZambeze) Nilton Lins University |
dc.contributor.author.fl_str_mv |
Assane, Inácio Mateus [UNESP] Prada-Mejia, Karen Dayana [UNESP] Gallani, Sílvia Umeda Weiser, Natasha Fernandes [UNESP] Valladão, Gustavo Moraes Ramos Pilarski, Fabiana [UNESP] |
dc.subject.por.fl_str_mv |
co-infection mass mortality monogenea infection motile Aeromonas septicemia Nile tilapia transport stress |
topic |
co-infection mass mortality monogenea infection motile Aeromonas septicemia Nile tilapia transport stress |
description |
Monogenean infection of the internal organs is extremely rare when compared to external infections. This study describes mass mortality of Nile tilapia (Oreochromis niloticus L.) originating from co-infection with Enterogyrus spp. and Aeromonas jandaei following transport stress. The first fish deaths occurred on day 1 post-transport, while cumulative mortality reached approximately 90% by day 10 post-stocking. An atypical amount of pale (whitish) faeces floating on the surface of the water as well as typical clinical signs of motile Aeromonas septicemia, were reported. Adult monogeneans and countless eggs of monogeneans were found in the stomachs and the intestines of both moribund and dead fish, respectively. Two strains of A. jandaei were isolated from the kidneys. Scanning electron microscope microphotographs of the stomach revealed the presence of numerous monogeneans penetrating deep into the gastric tissue, and diffuse lesions filled with bacilliform bacteria. Histopathological examination showed multifocal eosinophilic infiltrate, gastric gland and epithelial necrosis with sloughed necrotic debris in the lumen. This is the first report of co-infection by Enterogyrus spp. and A. jandaei in Nile tilapia and the first report of Enterogyrus coronatus, Enterogyrus foratus, and Enterogyrus malbergi parasitizing tilapia in Brazil. These findings indicate that synergic co-infection by Monogenean stomach parasites (E. coronatus, E. foratus, and E. malbergi) and A. jandaei may induce high mortalities in tilapia following transport stress. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-01-01 2022-04-29T08:32:42Z 2022-04-29T08:32:42Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1111/tbed.14295 Transboundary and Emerging Diseases. 1865-1682 1865-1674 http://hdl.handle.net/11449/229475 10.1111/tbed.14295 2-s2.0-85114400219 |
url |
http://dx.doi.org/10.1111/tbed.14295 http://hdl.handle.net/11449/229475 |
identifier_str_mv |
Transboundary and Emerging Diseases. 1865-1682 1865-1674 10.1111/tbed.14295 2-s2.0-85114400219 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Transboundary and Emerging Diseases |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128230440304640 |