Kelp and dolphin gulls cause perineal wounds in South American fur seal pups (Arctocephalus Australis) at Guafo Island, Chilean Patagonia

Mauricio Seguel, Francisco Muñoz, Felipe Montalva, Diego Perez-Venegas, Héctor Pavés, Nicole Gottdenker

Resultado de la investigación: Article

2 Citas (Scopus)

Resumen

During five reproductive seasons, we documented the presence, extent and origin of perineal wounds in South American fur seal pups (Arctocephalus australis) on Guafo Island, Northern Chilean Patagonia. The seasonal prevalence of perineal wounds ranged from 5 to 9%, and new cases were more common at the end of the breeding season (February), when pups were on average two months old and were actively expelling hookworms (Uncinaria sp). Histologically, wounds corresponded to marked ulcerative lymphoplasmacytic and histiocytic dermatitis with granulation tissue and mixed bacterial colonies. In 2015 and 2017, kelp gulls (Larus dominicanus) and dolphin gulls (Leucophaeus scoresbii) were observed picking and wounding the perineal area of marked pups. This behaviour occurred more frequently after the pups’ defecation, when sea gulls engaged in consumption of pups’ faeces. The affected pups usually had moderate to marked hookworm infections along with bloody diarrhoea and anaemia. Pups with severe wounds (23% of affected animals) had swollen perineal areas and signs of secondary systemic bacterial infection. We propose that seagulls on Guafo Island have learned to consume remains of blood and parasites in the faeces of pups affected by hookworm infection, causing perineal wounds during this process. We conclude that this perineal wounding is an unintentional, occasional negative effect of an otherwise commensal gull–fur seal relationship.

Idioma originalEnglish
Número de artículo170638
PublicaciónRoyal Society Open Science
Volumen4
N.º7
DOI
EstadoPublished - 2017

Huella dactilar

dolphins
Laridae
animal injuries
pups
macroalgae
Argentina
hookworms
breeding season
Uncinaria
feces
granulation tissue
defecation
Arctocephalus australis
dermatitis
bacterial infections
seals
infection
anemia
diarrhea
parasites

ASJC Scopus subject areas

  • General

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Seguel, Mauricio ; Muñoz, Francisco ; Montalva, Felipe ; Perez-Venegas, Diego ; Pavés, Héctor ; Gottdenker, Nicole. / Kelp and dolphin gulls cause perineal wounds in South American fur seal pups (Arctocephalus Australis) at Guafo Island, Chilean Patagonia. En: Royal Society Open Science. 2017 ; Vol. 4, N.º 7.
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title = "Kelp and dolphin gulls cause perineal wounds in South American fur seal pups (Arctocephalus Australis) at Guafo Island, Chilean Patagonia",
abstract = "During five reproductive seasons, we documented the presence, extent and origin of perineal wounds in South American fur seal pups (Arctocephalus australis) on Guafo Island, Northern Chilean Patagonia. The seasonal prevalence of perineal wounds ranged from 5 to 9{\%}, and new cases were more common at the end of the breeding season (February), when pups were on average two months old and were actively expelling hookworms (Uncinaria sp). Histologically, wounds corresponded to marked ulcerative lymphoplasmacytic and histiocytic dermatitis with granulation tissue and mixed bacterial colonies. In 2015 and 2017, kelp gulls (Larus dominicanus) and dolphin gulls (Leucophaeus scoresbii) were observed picking and wounding the perineal area of marked pups. This behaviour occurred more frequently after the pups’ defecation, when sea gulls engaged in consumption of pups’ faeces. The affected pups usually had moderate to marked hookworm infections along with bloody diarrhoea and anaemia. Pups with severe wounds (23{\%} of affected animals) had swollen perineal areas and signs of secondary systemic bacterial infection. We propose that seagulls on Guafo Island have learned to consume remains of blood and parasites in the faeces of pups affected by hookworm infection, causing perineal wounds during this process. We conclude that this perineal wounding is an unintentional, occasional negative effect of an otherwise commensal gull–fur seal relationship.",
keywords = "Arctocephalus Australis, Dolphin gull, Fur seal, Hookworm, Kelp gull, Wound",
author = "Mauricio Seguel and Francisco Mu{\~n}oz and Felipe Montalva and Diego Perez-Venegas and H{\'e}ctor Pav{\'e}s and Nicole Gottdenker",
year = "2017",
doi = "10.1098/rsos.170638",
language = "English",
volume = "4",
journal = "Royal Society Open Science",
issn = "2054-5703",
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Kelp and dolphin gulls cause perineal wounds in South American fur seal pups (Arctocephalus Australis) at Guafo Island, Chilean Patagonia. / Seguel, Mauricio; Muñoz, Francisco; Montalva, Felipe; Perez-Venegas, Diego; Pavés, Héctor; Gottdenker, Nicole.

En: Royal Society Open Science, Vol. 4, N.º 7, 170638, 2017.

Resultado de la investigación: Article

TY - JOUR

T1 - Kelp and dolphin gulls cause perineal wounds in South American fur seal pups (Arctocephalus Australis) at Guafo Island, Chilean Patagonia

AU - Seguel, Mauricio

AU - Muñoz, Francisco

AU - Montalva, Felipe

AU - Perez-Venegas, Diego

AU - Pavés, Héctor

AU - Gottdenker, Nicole

PY - 2017

Y1 - 2017

N2 - During five reproductive seasons, we documented the presence, extent and origin of perineal wounds in South American fur seal pups (Arctocephalus australis) on Guafo Island, Northern Chilean Patagonia. The seasonal prevalence of perineal wounds ranged from 5 to 9%, and new cases were more common at the end of the breeding season (February), when pups were on average two months old and were actively expelling hookworms (Uncinaria sp). Histologically, wounds corresponded to marked ulcerative lymphoplasmacytic and histiocytic dermatitis with granulation tissue and mixed bacterial colonies. In 2015 and 2017, kelp gulls (Larus dominicanus) and dolphin gulls (Leucophaeus scoresbii) were observed picking and wounding the perineal area of marked pups. This behaviour occurred more frequently after the pups’ defecation, when sea gulls engaged in consumption of pups’ faeces. The affected pups usually had moderate to marked hookworm infections along with bloody diarrhoea and anaemia. Pups with severe wounds (23% of affected animals) had swollen perineal areas and signs of secondary systemic bacterial infection. We propose that seagulls on Guafo Island have learned to consume remains of blood and parasites in the faeces of pups affected by hookworm infection, causing perineal wounds during this process. We conclude that this perineal wounding is an unintentional, occasional negative effect of an otherwise commensal gull–fur seal relationship.

AB - During five reproductive seasons, we documented the presence, extent and origin of perineal wounds in South American fur seal pups (Arctocephalus australis) on Guafo Island, Northern Chilean Patagonia. The seasonal prevalence of perineal wounds ranged from 5 to 9%, and new cases were more common at the end of the breeding season (February), when pups were on average two months old and were actively expelling hookworms (Uncinaria sp). Histologically, wounds corresponded to marked ulcerative lymphoplasmacytic and histiocytic dermatitis with granulation tissue and mixed bacterial colonies. In 2015 and 2017, kelp gulls (Larus dominicanus) and dolphin gulls (Leucophaeus scoresbii) were observed picking and wounding the perineal area of marked pups. This behaviour occurred more frequently after the pups’ defecation, when sea gulls engaged in consumption of pups’ faeces. The affected pups usually had moderate to marked hookworm infections along with bloody diarrhoea and anaemia. Pups with severe wounds (23% of affected animals) had swollen perineal areas and signs of secondary systemic bacterial infection. We propose that seagulls on Guafo Island have learned to consume remains of blood and parasites in the faeces of pups affected by hookworm infection, causing perineal wounds during this process. We conclude that this perineal wounding is an unintentional, occasional negative effect of an otherwise commensal gull–fur seal relationship.

KW - Arctocephalus Australis

KW - Dolphin gull

KW - Fur seal

KW - Hookworm

KW - Kelp gull

KW - Wound

UR - http://www.scopus.com/inward/record.url?scp=85026488421&partnerID=8YFLogxK

U2 - 10.1098/rsos.170638

DO - 10.1098/rsos.170638

M3 - Article

AN - SCOPUS:85026488421

VL - 4

JO - Royal Society Open Science

JF - Royal Society Open Science

SN - 2054-5703

IS - 7

M1 - 170638

ER -