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Artículo

Post-mortem findings in southern right whales Eubalaena australis at Península Valdés, Argentina, 2003-2012

McAloose, Denise; Rago, María VirginiaIcon ; Di Martino, Matías; Chirife, Andrea; Olson, Sarah H.; Beltramino, Lucas EstebanIcon ; Pozzi, Luciana MelinaIcon ; Musmeci, Luciana RaquelIcon ; la Sala, Luciano FranciscoIcon ; Mohamed, Nadia; Sala, Juan EmilioIcon ; Bandieri, Lucas MartínIcon ; Andrejuk, Julian; Tomaszewicz, Ania; Seimon, Tracie; Sironi, Mariano; Samartino, Luis Ernesto; Rowntree, Victoria; Uhart, Marcela María
Fecha de publicación: 04/2016
Editorial: Inter-Research
Revista: Diseases Of Aquatic Organisms
ISSN: 0177-5103
e-ISSN: 1616-1580
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

Between 2003 and 2012, 605 southern right whales (SRW; Eubalaena australis) were found dead along the shores of Península Valdés (PV), Argentina. These deaths included alarmingly high annual losses between 2007 and 2012, a peak number of deaths (116) in 2012, and a significant number of deaths across years in calves-of-the-year (544 of 605 [89.9%]; average = 60.4 yr-1). Postmortem examination and pathogen testing were performed on 212 whales; 208 (98.1%) were calvesof- the-year and 48.0% of these were newborns or neonates. A known or probable cause of death was established in only a small number (6.6%) of cases. These included ship strike in a juvenile and blunt trauma or lacerations (n = 5), pneumonia (n = 4), myocarditis (n = 2), meningitis (n = 1), or myocarditis and meningitis (n = 1) in calves. Ante-mortem gull parasitism was the most common gross finding. It was associated with systemic disease in a single 1-2 mo old calf. Immunohistochemical labeling for canine distemper virus, Toxoplasma gondii and Brucella spp., and PCR for cetacean morbillivirus (CeMV), influenza A, and apicomplexan protozoa were negative on formalin-fixed, paraffinembedded lung and brain samples from a subset of whales; PCR for Brucella spp. was positive in a newborn/neonate with pneumonia. Skin samples from whales with gull parasitism were PCR negative for CeMV, poxvirus, and papillomavirus. This is the first long-term study to investigate and summarize notable post-mortem findings in the PV SRW population. Consistent, significant findings within or between years to explain the majority of deaths and those in high-mortality years remain to be identified.
Palabras clave: Argentina , Calf , Eubalaena Australis , Histology , Mortality , Neonate , PenÍNsula ValdÉS , Southern Right Whale
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution 2.5 Unported (CC BY 2.5)
Identificadores
URI: http://hdl.handle.net/11336/37890
URL: http://www.int-res.com/abstracts/dao/v119/n1/p17-36/
DOI: http://dx.doi.org/10.3354/dao02986
Colecciones
Articulos(CCT - BAHIA BLANCA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - BAHIA BLANCA
Articulos(IBIOMAR)
Articulos de INSTITUTO DE BIOLOGIA DE ORGANISMOS MARINOS
Citación
McAloose, Denise; Rago, María Virginia; Di Martino, Matías; Chirife, Andrea; Olson, Sarah H.; et al.; Post-mortem findings in southern right whales Eubalaena australis at Península Valdés, Argentina, 2003-2012; Inter-Research; Diseases Of Aquatic Organisms; 119; 1; 4-2016; 17-36
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