Pathological Findings in Cetaceans Sporadically Stranded Along the Chilean Coast
Chile has one of the largest coastlines in the world with at least 50% of the world cetacean species occurring within its jurisdictional waters. However, little is known regarding the health status and main causes of death in cetaceans off continental Chile. In this report, we summarize the major pa...
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ftdoajarticles:oai:doaj.org/article:1569915953634929b1a11d636f98d6cc 2023-05-15T15:36:41+02:00 Pathological Findings in Cetaceans Sporadically Stranded Along the Chilean Coast Mario Alvarado-Rybak Frederick Toro Paulette Abarca Enrique Paredes Sonia Español-Jiménez Mauricio Seguel 2020-08-01T00:00:00Z https://doi.org/10.3389/fmars.2020.00684 https://doaj.org/article/1569915953634929b1a11d636f98d6cc EN eng Frontiers Media S.A. https://www.frontiersin.org/article/10.3389/fmars.2020.00684/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2020.00684 https://doaj.org/article/1569915953634929b1a11d636f98d6cc Frontiers in Marine Science, Vol 7 (2020) Burmesteir’s porpoise cetaceans Chile mortality pathology stranding Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2020 ftdoajarticles https://doi.org/10.3389/fmars.2020.00684 2022-12-31T11:47:20Z Chile has one of the largest coastlines in the world with at least 50% of the world cetacean species occurring within its jurisdictional waters. However, little is known regarding the health status and main causes of death in cetaceans off continental Chile. In this report, we summarize the major pathological findings and most likely causes of death of 15 cetaceans stranded along the Chilean coast between 2010 and 2019. Drowning, due to fishing gear entanglement, was the most likely cause of death in 3 Burmeister’s porpoises (Phocoena spinipinnis), a Risso’s dolphin (Grampus griseus) and a short-beaked common dolphin (Delphinus delphis). Additionally, the 3 Burmeister’s porpoises had mild to moderate eosinophilic and histiocytic pneumonia with pulmonary vasculitis associated with the nematode Pseudalius inflexus. A fourth Burmeister’s porpoise died of drowning after stranding alive at a sandy beach. Two fin whales (Balaenoptera physalus) died most likely of trauma associated with large vessel collision. A long-finned pilot whale (Globicephala melas) and an Orca (Orcinus orca) stranded most likely due to traumatic intra/interspecific interaction with other odontocete although for the pilot whale, osteoporosis with loss of alveolar bone and all teeth could have played a role. For a Strap-toothed beaked whale (Mesoplodon layardi), Dwarf sperm whale (Kogia sima), Southern right-whale dolphin (Lissodelphis peronii), Peale’s dolphin (Lagenorhynchus australis) and a dusky dolphin (Lagenorhynchus obscurus), the cause of stranding could not be determined. This study shows, despite the small number of examined carcasses that in Chile, human related trauma is an important cause of single cetacean stranding events. Article in Journal/Newspaper Balaenoptera physalus Orca Orcinus orca Southern Right Whale Sperm whale Directory of Open Access Journals: DOAJ Articles Sandy Beach ENVELOPE(-55.731,-55.731,49.917,49.917) Frontiers in Marine Science 7 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Burmesteir’s porpoise cetaceans Chile mortality pathology stranding Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
Burmesteir’s porpoise cetaceans Chile mortality pathology stranding Science Q General. Including nature conservation geographical distribution QH1-199.5 Mario Alvarado-Rybak Frederick Toro Paulette Abarca Enrique Paredes Sonia Español-Jiménez Mauricio Seguel Pathological Findings in Cetaceans Sporadically Stranded Along the Chilean Coast |
topic_facet |
Burmesteir’s porpoise cetaceans Chile mortality pathology stranding Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
Chile has one of the largest coastlines in the world with at least 50% of the world cetacean species occurring within its jurisdictional waters. However, little is known regarding the health status and main causes of death in cetaceans off continental Chile. In this report, we summarize the major pathological findings and most likely causes of death of 15 cetaceans stranded along the Chilean coast between 2010 and 2019. Drowning, due to fishing gear entanglement, was the most likely cause of death in 3 Burmeister’s porpoises (Phocoena spinipinnis), a Risso’s dolphin (Grampus griseus) and a short-beaked common dolphin (Delphinus delphis). Additionally, the 3 Burmeister’s porpoises had mild to moderate eosinophilic and histiocytic pneumonia with pulmonary vasculitis associated with the nematode Pseudalius inflexus. A fourth Burmeister’s porpoise died of drowning after stranding alive at a sandy beach. Two fin whales (Balaenoptera physalus) died most likely of trauma associated with large vessel collision. A long-finned pilot whale (Globicephala melas) and an Orca (Orcinus orca) stranded most likely due to traumatic intra/interspecific interaction with other odontocete although for the pilot whale, osteoporosis with loss of alveolar bone and all teeth could have played a role. For a Strap-toothed beaked whale (Mesoplodon layardi), Dwarf sperm whale (Kogia sima), Southern right-whale dolphin (Lissodelphis peronii), Peale’s dolphin (Lagenorhynchus australis) and a dusky dolphin (Lagenorhynchus obscurus), the cause of stranding could not be determined. This study shows, despite the small number of examined carcasses that in Chile, human related trauma is an important cause of single cetacean stranding events. |
format |
Article in Journal/Newspaper |
author |
Mario Alvarado-Rybak Frederick Toro Paulette Abarca Enrique Paredes Sonia Español-Jiménez Mauricio Seguel |
author_facet |
Mario Alvarado-Rybak Frederick Toro Paulette Abarca Enrique Paredes Sonia Español-Jiménez Mauricio Seguel |
author_sort |
Mario Alvarado-Rybak |
title |
Pathological Findings in Cetaceans Sporadically Stranded Along the Chilean Coast |
title_short |
Pathological Findings in Cetaceans Sporadically Stranded Along the Chilean Coast |
title_full |
Pathological Findings in Cetaceans Sporadically Stranded Along the Chilean Coast |
title_fullStr |
Pathological Findings in Cetaceans Sporadically Stranded Along the Chilean Coast |
title_full_unstemmed |
Pathological Findings in Cetaceans Sporadically Stranded Along the Chilean Coast |
title_sort |
pathological findings in cetaceans sporadically stranded along the chilean coast |
publisher |
Frontiers Media S.A. |
publishDate |
2020 |
url |
https://doi.org/10.3389/fmars.2020.00684 https://doaj.org/article/1569915953634929b1a11d636f98d6cc |
long_lat |
ENVELOPE(-55.731,-55.731,49.917,49.917) |
geographic |
Sandy Beach |
geographic_facet |
Sandy Beach |
genre |
Balaenoptera physalus Orca Orcinus orca Southern Right Whale Sperm whale |
genre_facet |
Balaenoptera physalus Orca Orcinus orca Southern Right Whale Sperm whale |
op_source |
Frontiers in Marine Science, Vol 7 (2020) |
op_relation |
https://www.frontiersin.org/article/10.3389/fmars.2020.00684/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2020.00684 https://doaj.org/article/1569915953634929b1a11d636f98d6cc |
op_doi |
https://doi.org/10.3389/fmars.2020.00684 |
container_title |
Frontiers in Marine Science |
container_volume |
7 |
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1766367049525755904 |