keyword
MENU ▼
Read by QxMD icon Read
search

Wildlife stress

keyword
https://www.readbyqxmd.com/read/28318786/modulation-of-the-stress-response-in-wild-fish-is-associated-with-variation-in-dissolved-nitrate-and-nitrite
#1
Tom G Pottinger
Disruption of non-reproductive endocrine systems in wildlife by chemicals has received little attention but represents a potentially significant problem. Nitrate is a major anthropogenic contaminant in the freshwater aquatic environment and has been identified as a potential disrupter of endocrine function in aquatic animals. This study was conducted to investigate the relationship between the function of the neuroendocrine stress axis in fish and inorganic N loading along reaches of rivers receiving cumulative point source and diffuse chemical inputs...
March 15, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28284611/dead-mouse-hopping-tyzzer-s-disease-in-spinifex-hopping-mice-notomys-alexis
#2
Hayley J Stannard, Melissa L Tulk, Julie M Old
Tyzzer's disease is caused by Clostridium piliformes and affects a wide range of domestic and wildlife species. Non-descript signs, if any, and a short incubation period make Tyzzer's disease difficult to diagnose and treat before death occurs. Here we describe an unexpected outbreak of Tyzzer's disease in a colony of native Australian spinifex hopping-mice (Notomys alexis). In this study captive hopping-mice were used in a nutrition trial (n=11), and others were housed in close proximity (n=4). During the nutrition trial, two hopping-mice exhibited signs of lethargy and diarrhoea, and were removed from the trial but died soon after...
March 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28277549/the-final-oral-ebola-vaccine-trial-on-captive-chimpanzees
#3
Peter D Walsh, Drishya Kurup, Dana L Hasselschwert, Christoph Wirblich, Jason E Goetzmann, Matthias J Schnell
Could new oral vaccine technologies protect endangered wildlife against a rising tide of infectious disease? We used captive chimpanzees to test oral delivery of a rabies virus (RABV) vectored vaccine against Ebola virus (EBOV), a major threat to wild chimpanzees and gorillas. EBOV GP and RABV GP-specific antibody titers increased exponentially during the trial, with rates of increase for six orally vaccinated chimpanzees very similar to four intramuscularly vaccinated controls. Chimpanzee sera also showed robust neutralizing activity against RABV and pseudo-typed EBOV...
March 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28277184/quercetin-attenuates-domoic-acid-induced-cognitive-deficits-in-mice
#4
Dongmei Wang, Jianlong Zhao, Sanqiang Li, Guomin Shen, Shu Hu
Domoic acid (DA) is one of the best known marine toxins, causative of important neurotoxic alterations. DA effects are documented both in wildlife and experimental assays, showing that this toxin causes severe injuries principally in the hippocampal area. Accumulating evidence indicates that mitochondrial dysfunction and oxidative stress are involved in DA-induced cognitive functional impairment. Therefore, therapeutics targeted to improve mitochondrial function and increase oxidative stress defence could be beneficial...
September 26, 2016: Nutritional Neuroscience
https://www.readbyqxmd.com/read/28213652/evaluating-stress-physiology-and-parasite-infection-parameters-in-the-translocation-of-critically-endangered-woylies-bettongia-penicillata
#5
Stephanie Hing, Amy S Northover, Edward J Narayan, Adrian F Wayne, Krista L Jones, Sarah Keatley, R C Andrew Thompson, Stephanie S Godfrey
Translocation can be stressful for wildlife. Stress may be important in fauna translocation because it has been suggested that it can exacerbate the impact of infectious disease on translocated wildlife. However, few studies explore this hypothesis by measuring stress physiology and infection indices in parallel during wildlife translocations. We analysed faecal cortisol metabolite (FCM) concentration and endoparasite parameters (nematodes, coccidians and haemoparasites) in a critically endangered marsupial, the woylie (Bettongia penicillata), 1-3 months prior to translocation, at translocation, and 6 months later...
February 17, 2017: EcoHealth
https://www.readbyqxmd.com/read/28186107/blubber-transcriptome-response-to-acute-stress-axis-activation-involves-transient-changes-in-adipogenesis-and-lipolysis-in-a-fasting-adapted-marine-mammal
#6
J I Khudyakov, C D Champagne, L M Meneghetti, D E Crocker
Stress can compromise an animal's ability to conserve metabolic stores and participate in energy-demanding activities that are critical for fitness. Understanding how wild animals, especially those already experiencing physiological extremes (e.g. fasting), regulate stress responses is critical for evaluating the impacts of anthropogenic disturbance on physiology and fitness, key challenges for conservation. However, studies of stress in wildlife are often limited to baseline endocrine measurements and few have investigated stress effects in fasting-adapted species...
February 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28166271/transcriptional-deregulation-of-genetic-biomarkers-in-chironomus-riparius-larvae-exposed-to-ecologically-relevant-concentrations-of-di-2-ethylhexyl-phthalate-dehp
#7
Óscar Herrero, Gloria Morcillo, Rosario Planelló
Di(2-ethylhexyl) phthalate (DEHP) is a ubiquitous environmental pollutant used worldwide as a plasticizer and solvent in many formulations. Based on available toxicological data, it has been classified as toxic for reproduction and as an endocrine disruptor. Despite this, ecotoxicological studies in aquatic wildlife organisms are still scarce. In the present work, the toxic molecular alterations caused by DEHP in aquatic larvae of the midge Chironomus riparius have been studied, by analyzing the transcriptional activity of genes related to some vital cellular pathways, such as the ribosomal machinery (rpL4, rpL13), the cell stress response (hsc70, hsp70, hsp40, hsp27), the ecdysone hormone pathway (EcR), the energy metabolism (GAPDH), and detoxication processes (CYP4G)...
2017: PloS One
https://www.readbyqxmd.com/read/28163324/primate-reinfection-with-gastrointestinal-parasites-behavioural-and-physiological-predictors-of-parasite-acquisition
#8
Sagan Friant, Toni E Ziegler, Tony L Goldberg
Infectious disease transmission is a cost of sociality in humans and other animals. Nevertheless, the mechanisms linking social behaviour to infection risk are poorly known. We conducted a field experiment to examine how host intrinsic traits, behaviour and physiology affect infection of nonhuman primates with gastrointestinal parasites. We measured rate to reinfection in a social group of red-capped mangabeys, Cercocebus torquatus, following chemotherapeutic treatment for parasite infections. By measuring behaviour, infection and glucocorticoid levels, we compared the relative effects of space sharing, directional contact and physiological stress on risk of acquiring new infections...
July 2016: Animal Behaviour
https://www.readbyqxmd.com/read/28149693/effects-of-groundwater-abstraction-on-two-keystone-tree-species-in-an-arid-savanna-national-park
#9
Eleanor Shadwell, Edmund February
BACKGROUND: In arid systems with no surface water, deep boreholes in ephemeral river beds provide for humans and animals. With continually increasing infrastructure development for tourism in arid wildlife parks such as the Kgalagadi Transfrontier Park in southern Africa, we ask what effects increased abstraction may have on large trees. Large trees in arid savannas perform essential ecosystem services by providing food, shade, nesting sites and increased nutrients for many other plant and animal species and for this are regarded as keystone species...
2017: PeerJ
https://www.readbyqxmd.com/read/28129951/effects-of-selenite-on-microcystis-aeruginosa-growth-microcystin-production-and-its-relationship-to-toxicity-under-hypersalinity-and-copper-sulfate-stresses
#10
Chuanqi Zhou, Jung-Chen Huang, Fang Liu, Shengbing He, Weili Zhou
Se laden freshwater algae that enter the Salton Sea with river water pose ecorisks to wildlife in the lake by transferring selenium (Se) to higher trophic levels. The aim of this study was to investigate impacts of Se on Microcystis aeruginosa, widely distributed in freshwater bodies, and its relationship with toxicity, such as microcystins and Se residues. When supplied with selenite, the 96 h-IC50 was calculated 2.60 mg Se/L. However, these inhibitory effects did not extend to microcystin production, and the extracellular fraction significantly increased with selenite as well as sulfate...
April 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28104343/thyroid-pathology-in-deer-mice-peromyscus-maniculata-from-a-reclaimed-mine-site-on-the-athabasca-oil-sands
#11
COMPARATIVE STUDY
Ahmad Movasseghi, Jaime Rodríguez-Estival, Judit E G Smits
Information on naturally occurring thyroid disease in wild animals in general and in small mammals specifically is extremely limited. In the present field-based work, we investigated the structure and function of thyroid glands of deer mice (Peromyscus maniculata) studied as sentinels of ecosystem sustainability on reclaimed areas post-mining on the oil sands of northeastern Alberta, because of their greater sensitivity to contaminants relative to meadow voles (Microtus pennsylvanicus) on the same sites. Extraction of bitumen in the oil sands of northeastern Alberta, results in the release of contaminants including polycyclic aromatic compounds (PACs), metals, and metalloids to the environment that have a measurable biological cost to wildlife living in the affected areas...
March 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28074559/effects-of-traffic-noise-on-tree-frog-stress-levels-immunity-and-color-signaling
#12
Mathieu Troïanowski, Nathalie Mondy, Adeline Dumet, Caroline Arcanjo, Thierry Lengagne
During the last decade, many studies have focused on the detrimental effects of noise pollution on acoustic communication. Surprisingly, while it is known that noise exposure strongly influences health in humans, studies on wildlife remain scarce. In order to gain insight into the consequences of traffic noise exposure, we experimentally manipulated traffic noise exposure as well as the endocrine status of animals to investigate physiological and phenotypic consequences of noise pollution in an anuran species...
January 11, 2017: Conservation Biology: the Journal of the Society for Conservation Biology
https://www.readbyqxmd.com/read/28031804/does-selective-logging-stress-tropical-forest-invertebrates-using-fat-stores-to-examine-sublethal-responses-in-dung-beetles
#13
Filipe França, Jos Barlow, Bárbara Araújo, Julio Louzada
The increased global demand for tropical timber has driven vast expanses of tropical forests to be selectively logged worldwide. While logging impacts on wildlife are predicted to change species distribution and abundance, the underlying physiological responses are poorly understood. Although there is a growing consensus that selective logging impacts on natural populations start with individual stress-induced sublethal responses, this literature is dominated by investigations conducted with vertebrates from temperate zones...
December 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28018026/harnessing-learning-biases-is-essential-for-applying-social-learning-in-conservation
#14
REVIEW
Alison L Greggor, Alex Thornton, Nicola S Clayton
Social learning can influence how animals respond to anthropogenic changes in the environment, determining whether animals survive novel threats and exploit novel resources or produce maladaptive behaviour and contribute to human-wildlife conflict. Predicting where social learning will occur and manipulating its use are, therefore, important in conservation, but doing so is not straightforward. Learning is an inherently biased process that has been shaped by natural selection to prioritize important information and facilitate its efficient uptake...
2017: Behavioral Ecology and Sociobiology
https://www.readbyqxmd.com/read/27984775/cetylpyridinium-chloride-at-sublethal-levels-increases-the-susceptibility-of-rat-thymic-lymphocytes-to-oxidative-stress
#15
Hiroto Imai, Fumiya Kita, Sho Ikesugi, Masami Abe, Shizuka Sogabe, Yumiko Nishimura-Danjobara, Hajime Miura, Yasuo Oyama
Cetylpyridinium chloride (CPC) is an antimicrobial agent used in many personal care products, with subsequent release into the environment. Since CPC is found at low concentrations in river and municipal wastewater, its influence on wildlife is of concern. Therefore, in this study, we used flow cytometry to examine the effects of sublethal concentrations of CPC on rat thymic lymphocytes in order to characterize the cellular actions of CPC at low concentrations in the presence and absence of H2O2-induced oxidative stress...
March 2017: Chemosphere
https://www.readbyqxmd.com/read/27957336/physical-condition-and-stress-levels-during-early-development-reflect-feeding-rates-and-predict-pre-and-post-fledging-survival-in-a-nearshore-seabird
#16
Juliet S Lamb, Kathleen M O'Reilly, Patrick G R Jodice
The effects of acute environmental stressors on reproduction in wildlife are often difficult to measure because of the labour and disturbance involved in collecting accurate reproductive data. Stress hormones represent a promising option for assessing the effects of environmental perturbations on altricial young; however, it is necessary first to establish how stress levels are affected by environmental conditions during development and whether elevated stress results in reduced survival and recruitment rates...
2016: Conservation Physiology
https://www.readbyqxmd.com/read/27957334/parasites-stress-and-reindeer-infection-with-abomasal-nematodes-is-not-associated-with-elevated-glucocorticoid-levels-in-hair-or-faeces
#17
A M Carlsson, G Mastromonaco, E Vandervalk, S Kutz
Stress hormones (glucocorticoids), incorporated into hair/fur and faeces, have been proposed as biomarkers of overall health in wildlife. Although such biomarkers may be helpful for wildlife conservation and management, their use has rarely been validated. There is a paucity of studies examining the variation of stress hormones in mammals and how they relate to other health measures, such as parasitism. Parasites are ubiquitous in wildlife and can influence the fitness of individual animals and populations...
2016: Conservation Physiology
https://www.readbyqxmd.com/read/27943571/a-review-of-ecological-risk-assessment-methods-for-amphibians-comparative-assessment-of-testing-methodologies-and-available-data
#18
REVIEW
Mark S Johnson, Catherine Aubee, Christopher J Salice, Katrina J Leigh, Elissa Liu, Ute Pott, David Pillard
Historically, ecological risk assessments have rarely included amphibian species, focusing preferentially on other aquatic (fish, invertebrates, algae) and terrestrial wildlife (birds and mammal) species. Often this lack of consideration is due to a paucity of toxicity data, significant variation in study design, uncertainty with regard to exposure or a combination of all three. Productive risk assessments for amphibians are particularly challenging given variations in complex life history strategies. Further consideration is needed for the development of useful laboratory animal models and appropriate experimental test procedures which can be effectively applied to the examination of biological response patterns...
December 12, 2016: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/27894913/the-regulation-of-cellular-apoptosis-by-the-ros-triggered-perk-eif2%C3%AE-chop-pathway-plays-a-vital-role-in-bisphenol-a-induced-male-reproductive-toxicity
#19
Li Yin, Yanlin Dai, Zhihong Cui, Xiao Jiang, Wenbin Liu, Fei Han, Ao Lin, Jia Cao, Jinyi Liu
Bisphenol A (2,2-bis(4-hydroxyphenyl)propane, BPA) is ubiquitous in the environment, wildlife, and humans. Evidence from past studies suggests that BPA is associated with decreased semen quality. However, the molecular basis for the adverse effect of BPA on male reproductive toxicity remains unclear. We evaluated the effect of BPA on mouse spermatocytes GC-2 cells and adult mice, and we explored the potential mechanism of its action. The results showed that BPA inhibited cell proliferation and increased the apoptosis rate...
January 1, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/27816003/cadmium-tolerant-characteristic-of-a-newly-isolated-lactococcus-lactis-subsp-lactis
#20
Yao Sheng, Ying Wang, Xuan Yang, Boyang Zhang, Xiaoyun He, Wentao Xu, Kunlun Huang
Environmental contamination caused by heavy metals poses a major threat to the wildlife and human health for their toxicity and intrinsically persistent nature. Some specific food grade bacteria have properties that enable them to eliminate heavy metals from food and water. Lactococcus lactis subsp. lactis, newly isolated from pickles, is a cadmium (Cd) tolerant bacteria. Cd resistant properties of the lactis was evaluated under different Cd stresses. Cd accumulation in different cellular parts was determined by ICP-MS and cell morphology changes were measured by SEM-EDS and TEM-EDS...
December 2016: Environmental Toxicology and Pharmacology
keyword
keyword
79539
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"