Protozoal-related mortalities in endangered Hawaiian monk seals Neomonachus schauinslandi

Barbieri, Michelle; Kashinsky, Lizabeth; Rotstein, David S.; Colegrove, Kathleen M.; Haman, Katherine H.; Magargal, Spencer L.; Sweeny, Amy R.; Kaufman, Angela C.; Grigg, Michael E.; Littnan, Charles L.

doi:10.3354/dao03047

Cited by 40 publications

(40 citation statements)

References 51 publications

(58 reference statements)

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“…Toxoplasmosis has been documented as a cause of mortality in various marine mammals (Kreuder et al 2003;Roe et al 2013;Carlson-Bremer et al 2015;Barbieri et al 2016). Gross pathology included ascites, hepatomegaly, pleural and pericardial effusions, and pulmonary edema (Gibson et al 2011).…”

Section: Clinical Manifestationsmentioning

confidence: 99%

“…Such reproductive failure suggests that toxoplasmosis can be a risk to wildlife populations, especially those under pressure from other sources of mortality and reproductive stressors (Barbieri et al 2016;Shapiro et al 2016).…”

Section: Clinical Manifestationsmentioning

confidence: 99%

“…Transplacental transmission of T. gondii has been described in Risso's dolphin, Grampus griseus (Resendes et al 2002), Indo-Pacific bottlenose dolphin, Tursiops aduncus (Jardine and Dubey 2002), southern sea otter (Miller et al 2008b), Hawaiian monk seal (Barbieri et al 2016), and California sea lion (Zalophus californianus; Carlson-Bremer et al 2015). Transmammary transmission has only been documented in domestic and laboratory animals (Tenter et al 2000).…”

Section: Sources Of Infectionmentioning

confidence: 99%

“…Toxoplasma gondii can be associated with reproductive loss and mortalities, as well as population reduction in free-ranging animals (Jardine and Dubey 2002;Resendes et al 2002;Kreuder et al 2003;Roe et al 2013;Herder et al 2015;Carlson-Bremer et al 2015;Barbieri et al 2016). Cats and wild felids shed oocysts of Toxoplasma in feces, and contaminate the environment, food, and water.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, mortalities due to Toxoplasma infection in marine animals have been reported across the world (Kreuder et al 2003;Roe et al 2013;Carlson-Bremer et al 2015;Barbieri et al 2016). Clinical disease due to toxoplasmosis has been documented in a range of captive and free-ranging marine mammals (see Dubey et al 2003).…”

Section: Introductionmentioning

confidence: 99%

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Qualitative risk assessment of impact of Toxoplasma gondii on health of beluga whales, Delphinapterus leucas from the Eastern Beaufort Sea, Northwest Territories

et al. 2018

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In recent years, the protozoan parasite Toxoplasma gondii has increasingly been recognized in Arctic fauna, including beluga whales (Delphinapterus leucas) in the Eastern Beaufort Sea (EBS), Northwest Territories. We qualitatively assessed the risks of T. gondii to the health of EBS beluga because of their importance in livelihood of Arctic communities as well as their potential role as sentinels. This risk assessment used a standard framework including hazard identification, hazard characterization, exposure assessment, and risk characterization. We conclude that currently, the EBS beluga are at moderate risk of exposure to T. gondii, and low risk of developing disease associated with toxoplasmosis, based on the small amount of data available (only healthy, hunter-harvested animals have been examined). Although there was a high level of uncertainty due to limited published data and the challenges in determining prevalence and significance of disease in wild marine mammal populations, overall the EBS population was currently considered to be at a low risk for population level impacts of toxoplasmosis. Finally, we identify knowledge gaps that can guide future research, provide better evidence for future risk assessments, and Résumé : Au cours des dernières années, le parasite protozoaire Toxoplasma gondii a de plus en plus été reconnu dans la faune arctique, y compris chez les bélugas (Delphinapterus leucas) dans l'est de la mer de Beaufort (EMB), dans les Territoires du Nord-Ouest. Nous avons qualitativement évalué les risques de T. gondii pour la santé des bélugas dans l'EMB à cause de leur importance au niveau de la subsistance des communautés dans l'Arctique aussi bien que leur rôle potentiel comme sentinelles. Dans cette évaluation du risque, on a utilisé un cadre standard incluant l'identification des dangers, la caractérisation des dangers, l'évaluation de l'exposition et la caractérisation des risques. Nous concluons, fondé sur la faible quantité de données disponibles (seulement les animaux en bonne santé capturés par des chasseurs ont été examinés), qu'actuellement les bélugas de l'EMB sont à risque modéré d'exposition à T. gondii et à faible risque de développer une maladie associée à la toxoplasmose. Bien qu'il y ait un haut niveau d'incertitude en raison de la quantité limitée de données publiées et des défis quant à la détermination de la prévalence et de l'importance des maladies touchant les populations de mammifères marins sauvages, en général la population de l'EMB est considérée être à faible risque de subir des effets de toxoplasmose. Finalement, nous identifions les lacunes dans les connaissances qui peuvent guider les recherches futures, fournir de meilleures données pour l'évaluation des risques futurs et ultimement, mieux détecter et atténuer les risques changeants pour la santé des bélugas de l'Arctique, ainsi que les communautés qui dépendent de populations durables et saines pour la récolte. [Traduit par la Rédaction]Mots-clés : évaluation qualitative du risque, Toxoplasma gon...

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Section: Clinical Manifestationsmentioning

confidence: 99%

Section: Clinical Manifestationsmentioning

confidence: 99%

Section: Sources Of Infectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Qualitative risk assessment of impact of Toxoplasma gondii on health of beluga whales, Delphinapterus leucas from the Eastern Beaufort Sea, Northwest Territories

et al. 2018

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Sectoral Impacts of Invasive Species in the United States and Approaches to Management

Marsh

Hayes

Klein³

et al. 2021

Invasive Species in Forests and Rangelands of the United States

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Invasive species have a major effect on many sectors of the U.S. economy and on the well-being of its citizens. Their presence impacts animal and human health, military readiness, urban vegetation and infrastructure, water, energy and transportations systems, and indigenous peoples in the United States (Table 9.1). They alter bio-physical systems and cultural practices and require significant public and private expenditure for control. This chapter provides examples of the impacts to human systems and explains mechanisms of invasive species’ establishment and spread within sectors of the U.S. economy. The chapter is not intended to be comprehensive but rather to provide insight into the range and severity of impacts. Examples provide context for ongoing Federal programs and initiatives and support State and private efforts to prevent the introduction and spread of invasive species and eradicate and control established invasive species.

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The Hawaiian Monk Seal: Ethology Applied to Endangered Species Conservation and Recovery

Robinson

Barbieri

Johanos

2022

Ethology and Behavioral Ecology of Marine Mammals

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Protozoal-related mortalities in endangered Hawaiian monk seals Neomonachus schauinslandi

Cited by 40 publications

References 51 publications

Qualitative risk assessment of impact of Toxoplasma gondii on health of beluga whales, Delphinapterus leucas from the Eastern Beaufort Sea, Northwest Territories

Qualitative risk assessment of impact of Toxoplasma gondii on health of beluga whales, Delphinapterus leucas from the Eastern Beaufort Sea, Northwest Territories

Sectoral Impacts of Invasive Species in the United States and Approaches to Management

The Hawaiian Monk Seal: Ethology Applied to Endangered Species Conservation and Recovery

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