Hepatic concentrations of per- and polyfluoroalkyl substances (PFAS) in dolphins from south-east Australia: Highest reported globally

Foord, Chantel S.; Szabo, Drew; Robb, Kate; Clarke, Bradley O.; Nugegoda, Dayanthi

doi:10.1016/j.scitotenv.2023.168438

Cited by 10 publications

(1 citation statement)

References 60 publications

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“…, 2021). This classification was supported by the population's exposure to numerous anthropogenic threats, such as commercial and recreational fishing, anthropogenic contaminants, tourism, shipping, oil and gas mining, seismic exploration and environmental changes (Charlton-Robb et al, 2015;Duignan et al, 2020;Filby et al, 2014;Foord et al, 2024;Monk et al, 2014;Puszka et al, 2021). However, the Burrunan dolphins are not classified as threatened (endangered or critically endangered) at a national or global level.…”

Section: The Burrunan Dolphins Have Been Previously Described Asmentioning

confidence: 99%

Population distribution and drivers of habitat use for the Burrunan dolphins, Port Phillip Bay, Australia

Beddoe,

Shimeta,

Klaassen

et al. 2024

Ecology and Evolution

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Bottlenose dolphin (Tursiops) populations, also described as the Burrunan dolphins, consist of a resident population of approximately 150 individuals in Port Phillip Bay (PPB), Victoria. Previous reports indicate distribution across a small southern region of PPB; however, little is known about their full distribution patterns across the entire PPB region. Here, we investigate the spatiotemporal distribution of the Burrunan dolphins across four zones representative of PPB benthic habitats and bathymetry to gain a better understanding of the potential drivers of the population's habitat use. Port Phillip Bay, Victoria, Australia. One hundred and twenty‐nine boat‐based surveys were undertaken between March 2015 and August 2021, encompassing 181 sightings. Generalised linear models (GLMs) were used to investigate annual, seasonal and zonal variation. We found no variation in sighting frequencies between years. Austral summer and winter had a significantly higher sighting frequency than autumn. We found that Burrunan dolphins utilise the entire bay, further extending the species range, and show a significantly higher number of sightings in the southern zone than in any other zones. Overlaying dolphin sightings with known oceanographic characteristics within PPB, we found bathymetry and benthic habitats were potential drivers for the Burrunan dolphins distribution and habitat use within the bay, with the dolphins significantly favouring the 5–10 and 10–15 m contour depths. These results show a more widespread distribution across the bay than previously documented. We recommend expansion of the current marine protected areas in the north and south of the bay. This study has increased our understanding of the vital habitat for the Burrunan dolphin populations. By providing evidence‐based conservation recommendations, we hope to improve and contribute to future research, conservation management plans and effective marine protected areas across PPB for the resident Burrunan dolphin population.

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Section: The Burrunan Dolphins Have Been Previously Described Asmentioning

confidence: 99%

Population distribution and drivers of habitat use for the Burrunan dolphins, Port Phillip Bay, Australia

Beddoe,

Shimeta,

Klaassen

et al. 2024

Ecology and Evolution

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First report of accumulation of perfluorooctane sulfonate (PFOS) in platypuses (Ornithorhynchus anatinus) in New South Wales, Australia

Warwick,

Wright,

Whinfield

et al. 2024

Environ Sci Pollut Res

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The platypus (Ornithorhynchus anatinus) is a semi-aquatic monotreme that occupies a high trophic position in the freshwater ecosystems of eastern mainland Australia and Tasmania. Platypuses are continuously exposed to anthropogenic contaminants including perfluorooctane sulfonate (PFOS). This study examined PFOS concentrations in the livers of deceased platypuses (eight wild; one captive) that were opportunistically collected across NSW over a two- and a half-year period. There was a large variation in PFOS concentrations, ranging from < 1 µg/kg to 1200 µg/kg. This study presents the first report of PFOS contamination in platypuses, revealing their PFOS levels are broadly similar to those found in river otters (Lutra canadensis) and lower than those in American mink (Mustela vison), both which occupy similar ecological niches in freshwater systems. This study raises concerns about the impact of PFOS on platypus health.

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Perfluorooctane sulfonate causes pyroptosis and lipid metabolism disorders through ROS-mediated NLRP3 inflammasome activation in grass carp hepatocyte

Shi,

Zhang,

Xing

et al. 2024

Aquatic Toxicology

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Hepatic concentrations of per- and polyfluoroalkyl substances (PFAS) in dolphins from south-east Australia: Highest reported globally

Cited by 10 publications

References 60 publications

Population distribution and drivers of habitat use for the Burrunan dolphins, Port Phillip Bay, Australia

Population distribution and drivers of habitat use for the Burrunan dolphins, Port Phillip Bay, Australia

First report of accumulation of perfluorooctane sulfonate (PFOS) in platypuses (Ornithorhynchus anatinus) in New South Wales, Australia

Perfluorooctane sulfonate causes pyroptosis and lipid metabolism disorders through ROS-mediated NLRP3 inflammasome activation in grass carp hepatocyte

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