Pathology and causes of death in stranded humpback whales (Megaptera novaeangliae) from Brazil

PloS One
Kátia Regina GrochJosé Luiz Catão-Dias

Abstract

This study describes the pathologic findings of 24 humpback whales (Megaptera novaeangliae) found stranded along the Brazilian coast from 2004 to 2016. Eighteen (75%) animals evaluated were found stranded alive. From these, 13 died naturally on shore and five were euthanized. Six died at sea and were washed ashore. Of the 24, 19 (79.2%) were calves, four (16.7%) were juveniles, and one (4.2%) was an adult. The most probable cause of stranding and/or death (CSD) was determined in 23/24 (95.8%) individuals. In calves, CSD included neonatal respiratory distress (13/19; 68.4%), infectious disease (septicemia, omphaloarteritis and urachocystitis; 3/19; 15.8%), trauma of unknown origin (2/19; 10.5%), and vehicular trauma (vessel strike; 1/19; 5.3%). In juveniles and adult individuals, CSD was: emaciation (2/5; 40%), sunlight-thermal burn shock (1/5; 20%); and discospondylitis (1/5; 20%). In one juvenile, the CSD was undetermined (1/5; 20%). This study integrates novel findings and published case reports to delineate the pathology of a South-western Atlantic population of humpback whales. This foundation will aid in the assessment of the population health and establish a baseline for development of conservation policies.

References

Jan 1, 1992·World Journal of Surgery·T LundR K Reed
Jan 1, 1988·Toxicon : Official Journal of the International Society on Toxinology·K KogureR R Colwell
Aug 1, 1984·Burns, Including Thermal Injury·R W SmithJ E Hammond
Oct 1, 1981·Journal of the American Academy of Dermatology·B A GilchrestM C Mihm
Jul 1, 1997·The Journal of Burn Care & Rehabilitation·F BrayeC Boucaud
Aug 13, 1999·Journal of Anatomy·D F Cowan, T L Smith
Oct 17, 2002·Annals of the New York Academy of Sciences·Jeremiah T SalikiJonathan P Gustavson
Mar 16, 2004·Veterinary Pathology·J R JaberA Fernández
Sep 21, 2005·American Journal of Respiratory Cell and Molecular Biology·Michael A Matthay, Guy A Zimmerman
Jan 16, 2007·Burns : Journal of the International Society for Burn Injuries·Hwan HerrSeongcheol Yu
May 8, 2007·Lancet·Arthur P Wheeler, Gordon R Bernard
Jun 17, 2008·Journal of Comparative Pathology·D F Cowan, B E Curry
Mar 17, 2010·Diseases of Aquatic Organisms·Andrea L BogomolniMichael Moore
Nov 9, 2012·Diseases of Aquatic Organisms·Kátia R GrochJosé Luiz Catão-Dias
Nov 14, 2012·The Veterinary Journal·P HerráezE Sierra
Apr 4, 2013·Diseases of Aquatic Organisms·Manuel ArbeloAntonio Fernández
Apr 12, 2013·Diseases of Aquatic Organisms·Michael J MooreWilliam A McLellan
Aug 24, 2013·The Journal of Veterinary Medical Science·Miyuu TanakaJyoji Yamate
Feb 26, 2014·Emerging Infectious Diseases·Kátia R GrochJosé Luiz Catão-Dias
Jan 14, 2016·Diseases of Aquatic Organisms·Jessica M JacobBrenda A Jensen
Jan 28, 2016·Laboratory Investigation; a Journal of Technical Methods and Pathology

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Citations

Nov 30, 2019·Diseases of Aquatic Organisms·Kátia R GrochJosué Díaz-Delgado
Jan 11, 2020·Frontiers in Veterinary Science·Nakita CâmaraPedro Herráez
Oct 19, 2020·Transboundary and Emerging Diseases·Kátia R GrochJosé L Catão-Dias

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