New insight into dolphin morbillivirus phylogeny and epidemiology in the northeast Atlantic: opportunistic study in cetaceans stranded along the Portuguese and Galician coasts
Abstract Background Screening Atlantic cetacean populations for Cetacean Morbillivirus (CeMV) is essential to understand the epidemiology of the disease. In Europe, Portugal and Spain have the highest cetacean stranding rates, mostly due to the vast extension of coastline. Morbillivirus infection ha...
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ftbiomed:oai:biomedcentral.com:s12917-016-0795-4 2023-05-15T17:38:38+02:00 New insight into dolphin morbillivirus phylogeny and epidemiology in the northeast Atlantic: opportunistic study in cetaceans stranded along the Portuguese and Galician coasts Bento, Maria Eira, Catarina Vingada, José Marçalo, Ana Ferreira, Marisa Fernandez, Alfredo Tavares, Luís Duarte, Ana 2016-08-26 http://www.biomedcentral.com/1746-6148/12/176 en eng BioMed Central Ltd. http://www.biomedcentral.com/1746-6148/12/176 Copyright 2016 The Author(s). Cetacean morbillivirus Dolphin morbillivirus Striped dolphins Eastern Atlantic Research article 2016 ftbiomed 2016-09-11T00:02:17Z Abstract Background Screening Atlantic cetacean populations for Cetacean Morbillivirus (CeMV) is essential to understand the epidemiology of the disease. In Europe, Portugal and Spain have the highest cetacean stranding rates, mostly due to the vast extension of coastline. Morbillivirus infection has been associated with high morbidity and mortality in cetaceans, especially in outbreaks reported in the Mediterranean Sea. However, scarce information is available regarding this disease in cetaceans from the North-East Atlantic populations. The presence of CeMV genomic RNA was investigated by reverse transcription-quantitative PCR in samples from 279 specimens stranded along the Portuguese and Galician coastlines collected between 2004 and 2015. Results A total of sixteen animals ( n = 16/279, 5.7 %) were positive. The highest prevalence of DMV was registered in striped dolphins ( Stenella coeruleoalba ) ( n = 14/69; 20.3 %), slightly higher in those collected in Galicia ( n = 8/33; 24.2 %) than in Portugal ( n = 6/36; 16.7 %). Conclusions Phylogenetic analysis revealed that, despite the low genetic distances between samples, the high posterior probability (PP) values obtained strongly support the separation of the Portuguese and Galician sequences in an independent branch, separately from samples from the Mediterranean and the Canary Islands. Furthermore, evidence suggests an endemic rather than an epidemic situation in the striped dolphin populations from Portugal and Galicia, since no outbreaks have been detected and positive samples have been detected annually since 2007, indicating that this virus is actively circulating in these populations and reaching prevalence values as high as 24 % among the Galician samples tested. Article in Journal/Newspaper North East Atlantic Northeast Atlantic BioMed Central |
institution |
Open Polar |
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BioMed Central |
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ftbiomed |
language |
English |
topic |
Cetacean morbillivirus Dolphin morbillivirus Striped dolphins Eastern Atlantic |
spellingShingle |
Cetacean morbillivirus Dolphin morbillivirus Striped dolphins Eastern Atlantic Bento, Maria Eira, Catarina Vingada, José Marçalo, Ana Ferreira, Marisa Fernandez, Alfredo Tavares, Luís Duarte, Ana New insight into dolphin morbillivirus phylogeny and epidemiology in the northeast Atlantic: opportunistic study in cetaceans stranded along the Portuguese and Galician coasts |
topic_facet |
Cetacean morbillivirus Dolphin morbillivirus Striped dolphins Eastern Atlantic |
description |
Abstract Background Screening Atlantic cetacean populations for Cetacean Morbillivirus (CeMV) is essential to understand the epidemiology of the disease. In Europe, Portugal and Spain have the highest cetacean stranding rates, mostly due to the vast extension of coastline. Morbillivirus infection has been associated with high morbidity and mortality in cetaceans, especially in outbreaks reported in the Mediterranean Sea. However, scarce information is available regarding this disease in cetaceans from the North-East Atlantic populations. The presence of CeMV genomic RNA was investigated by reverse transcription-quantitative PCR in samples from 279 specimens stranded along the Portuguese and Galician coastlines collected between 2004 and 2015. Results A total of sixteen animals ( n = 16/279, 5.7 %) were positive. The highest prevalence of DMV was registered in striped dolphins ( Stenella coeruleoalba ) ( n = 14/69; 20.3 %), slightly higher in those collected in Galicia ( n = 8/33; 24.2 %) than in Portugal ( n = 6/36; 16.7 %). Conclusions Phylogenetic analysis revealed that, despite the low genetic distances between samples, the high posterior probability (PP) values obtained strongly support the separation of the Portuguese and Galician sequences in an independent branch, separately from samples from the Mediterranean and the Canary Islands. Furthermore, evidence suggests an endemic rather than an epidemic situation in the striped dolphin populations from Portugal and Galicia, since no outbreaks have been detected and positive samples have been detected annually since 2007, indicating that this virus is actively circulating in these populations and reaching prevalence values as high as 24 % among the Galician samples tested. |
format |
Article in Journal/Newspaper |
author |
Bento, Maria Eira, Catarina Vingada, José Marçalo, Ana Ferreira, Marisa Fernandez, Alfredo Tavares, Luís Duarte, Ana |
author_facet |
Bento, Maria Eira, Catarina Vingada, José Marçalo, Ana Ferreira, Marisa Fernandez, Alfredo Tavares, Luís Duarte, Ana |
author_sort |
Bento, Maria |
title |
New insight into dolphin morbillivirus phylogeny and epidemiology in the northeast Atlantic: opportunistic study in cetaceans stranded along the Portuguese and Galician coasts |
title_short |
New insight into dolphin morbillivirus phylogeny and epidemiology in the northeast Atlantic: opportunistic study in cetaceans stranded along the Portuguese and Galician coasts |
title_full |
New insight into dolphin morbillivirus phylogeny and epidemiology in the northeast Atlantic: opportunistic study in cetaceans stranded along the Portuguese and Galician coasts |
title_fullStr |
New insight into dolphin morbillivirus phylogeny and epidemiology in the northeast Atlantic: opportunistic study in cetaceans stranded along the Portuguese and Galician coasts |
title_full_unstemmed |
New insight into dolphin morbillivirus phylogeny and epidemiology in the northeast Atlantic: opportunistic study in cetaceans stranded along the Portuguese and Galician coasts |
title_sort |
new insight into dolphin morbillivirus phylogeny and epidemiology in the northeast atlantic: opportunistic study in cetaceans stranded along the portuguese and galician coasts |
publisher |
BioMed Central Ltd. |
publishDate |
2016 |
url |
http://www.biomedcentral.com/1746-6148/12/176 |
genre |
North East Atlantic Northeast Atlantic |
genre_facet |
North East Atlantic Northeast Atlantic |
op_relation |
http://www.biomedcentral.com/1746-6148/12/176 |
op_rights |
Copyright 2016 The Author(s). |
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1766139157526085632 |