Pollutant exposure at wastewater treatment works affects the detoxification organs of an urban adapter, the Banana Bat

Naidoo, S.; Vosloo, Daléne; Schoeman, M. Corrie

doi:10.1016/j.envpol.2015.09.056

Cited by 19 publications

(21 citation statements)

References 58 publications

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“…Cadmium injections were linked with testicular necrosis in Rhinopoma kinneari (Dixit and Lohiya, 1974). Microscopic lesions, including hepatic necrosis, vacuolation, inflammation and atrophy, as well as renal necrosis and inflammation, were reported in Neoromicia nana feeding at wastewater treatment sites, with elevated tissue levels of iron, zinc, and copper; other studies of this population documented DNA damage and decreased antioxidant capacity (Naidoo et al, 2013(Naidoo et al, , 2015(Naidoo et al, , 2016Zocche et al, 2010). Organic tin compounds have been associated with decreased complement activity and a possible decrease in immune response in Myotis daubentonii (Lilley et al, 2013).…”

Section: Additional Toxic Diseasesmentioning

confidence: 99%

Chiroptera

Farina

Lankton

2018

Pathology of Wildlife and Zoo Animals

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FIGURE 25.2 Normal patagium, Pteropus vampyrus. The patagium consists of two thin layers of epidermis separated by collagen, vessels, and bundles of elastic fibers. FIGURE 25.1 FIGURE 25.4 Normal brain, Pteropus hypomelanus. The brain is largely lissencephalic, with rare shallow sulci. (Photo Courtesy of E. Kieran, University of Florida) FIGURE 25.5 Iron overload in the liver, Rousettus aegyptiacus. (A) Bridging fibrosis with iron overload. Abundant brown pigment is present within and at the margins of the connective tissue. (B) Abundant hemosiderin is present in macrophages at the margins of and within the fibrous connective tissue, with lesser amounts in hepatocytes, bile ducts, and Kupffer cells. Prussian blue.

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Section: Additional Toxic Diseasesmentioning

confidence: 99%

Chiroptera

Farina

Lankton

2018

Pathology of Wildlife and Zoo Animals

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“…Similarly, banana bats ( N. nana ) consuming wastewater‐contaminated food also showed decreased total antioxidant capacity (Naidoo et al . ).…”

Section: Discussionmentioning

confidence: 97%

“…; Naidoo et al . ). This results mostly in loss of function and behaviour abnormalities (Clark & Stafford ) – immunosuppression, for instance, can increase bats vulnerability to diseases like the white nose syndrome, which is known to cause massive population declines (Bennett & Thies ; Kannan et al .…”

Section: Discussionmentioning

confidence: 97%

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Exposure to the insecticide endosulfan induces liver morphology alterations and oxidative stress in fruit‐eating bats (Artibeus lituratus)

Oliveira

Brinati

Miranda

et al. 2017

Int J Experimental Path

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Exposure to pesticides may increase the generation of reactive oxygen species (ROS), leading to oxidation of cell membrane lipids and proteins. Although fruit bats are potentially exposed to pesticides during their entire lifespan, the impacts of this exposure are still poorly investigated. We examined the effects of low, commercially recommended concentrations (0, 1.05 and 2.1 g/l) of an organochlorine insecticide endosulfan (EDS) formulation on oxidative responses in the liver and kidneys of Neotropical fruit bats (Artibeus lituratus), as well as possible liver morphological alterations following a 35-day oral exposure. Superoxide dismutase activity was significantly decreased upon exposure to 1.05 g/l of EDS in the liver and kidneys, catalase was decreased in the liver of 2.1 g/l EDS-exposed bats, while glutathione S-transferase was increased in the liver of 2.1 g/l EDS-exposed bats. Protein carbonyls increased following the exposure to the highest EDS dose tested. Endosulfan-induced morphological alterations in the liver included cell degeneration and cell death, with apparent cytoplasm lipid accumulation (steatosis) and pyknotic nuclei, karyolysis and deposit of collagen fibres. Our findings suggest that exposure to low concentrations of EDS induced a certain extent of oxidative damage in fruit bats, which may have led to liver morphological alterations.

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“…However, heavy metals in the water at WWTW accumulate in N. nana liver, kidney and muscle tissues ( Naidoo et al, 2013 ) with sub-lethal haemotological and genotoxic consequences ( Naidoo et al, 2015 ). Additionally, the detoxification organs of N. nana at WWTW differ significantly from those of bats at reference sites: increased essential metal (Fe, Zn, and Cu) and one mineral nutrient (K) content; more histopathological lesions; and increased organ size ( Naidoo et al, 2016 ). In this study we tested the hypothesis that the decrease in habitat quality at WWTW (limited prey diversity, exposure to the toxic cocktail of pollutants and high illumination at night) affect fatty acid profiles in thermogenic, interscapular BrAT (iBrAT) of N. nana .…”

Section: Introductionmentioning

confidence: 97%

Foraging at wastewater treatment works affects brown adipose tissue fatty acid profiles in banana bats

et al. 2016

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In this study we tested the hypothesis that the decrease in habitat quality at wastewater treatment works (WWTW), such as limited prey diversity and exposure to the toxic cocktail of pollutants, affect fatty acid profiles of interscapular brown adipose tissue (iBrAT) in bats. Further, the antioxidant capacity of oxidative tissues such as pectoral and cardiac muscle may not be adequate to protect those tissues against reactive molecules resulting from polyunsaturated fatty acid auto-oxidation in the WWTW bats. Bats were sampled at two urban WWTW, and two unpolluted reference sites in KwaZulu-Natal, South Africa. Brown adipose tissue (BrAT) mass was lower in WWTW bats than in reference site bats. We found lower levels of saturated phospholipid fatty acids and higher levels of mono- and polyunsaturated fatty acids in WWTW bats than in reference site bats, while C18 desaturation and n-6 to n-3 ratios were higher in the WWTW bats. This was not associated with high lipid peroxidation levels in pectoral and cardiac muscle. Combined, these results indicate that WWTW bats rely on iBrAT as an energy source, and opportunistic foraging on abundant, pollutant-tolerant prey may change fatty acid profiles in their tissue, with possible effects on mitochondrial functioning, torpor and energy usage.

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Pollutant exposure at wastewater treatment works affects the detoxification organs of an urban adapter, the Banana Bat

Cited by 19 publications

References 58 publications

Chiroptera

Chiroptera

Exposure to the insecticide endosulfan induces liver morphology alterations and oxidative stress in fruit‐eating bats (Artibeus lituratus)

Foraging at wastewater treatment works affects brown adipose tissue fatty acid profiles in banana bats

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