E. Narayan

Publications113
h-index22
Citations1,442
Highly Influential Citations81
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Cell block cytology. Improved preparation and its efficacy in diagnostic cytology.
Cell blocks prepared from residual tissue fluids and fine-needle aspirations can be useful adjuncts to smears for establishing a more definitive cytopathologic diagnosis. They can be particularly… Expand
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Are baseline and short-term corticosterone stress responses in free-living amphibians repeatable?
Amphibians respond to environmental stressors by secreting corticosterone, a stress hormone which promotes physiological and behavioral responses. Capture handling can be used to stimulate… Expand
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Urinary corticosterone metabolite responses to capture, and annual patterns of urinary corticosterone in wild and captive endangered Fijian ground frogs (Platymantis vitiana)
This study was based on the development of a non-invasive glucocorticoid enzyme-immunoassay for the assessment of stress in wild and captive endangered Fijian ground frogs (Platymantis vitiana).… Expand
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Urinary corticosterone responses to capture and toe-clipping in the cane toad (Rhinella marina) indicate that toe-clipping is a stressor for amphibians.
Toe-clipping, the removal of one or more toes, is a common method used to individually mark free-living animals. Whilst this method is widely used in studies of amphibians, the appropriateness of the… Expand
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Repeatability of baseline corticosterone and short-term corticosterone stress responses, and their correlation with testosterone and body condition in a terrestrial breeding anuran (Platymantis…
Repeatability of physiological response variables, such as the stress hormone corticosterone, across numerous sampling occasions is an important assumption for their use as predictors of behaviour,… Expand
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Non-invasive reproductive and stress endocrinology in amphibian conservation physiology
  • E. Narayan
  • Biology, Medicine
  • Conservation physiology
  • 24 May 2013
This review focuses on non-invasive endocrinology, which is a key component of amphibian conservation physiology. It enables rapid assessment of reproductive and stress hormones in free-living and… Expand
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Sight of a Predator Induces a Corticosterone Stress Response and Generates Fear in an Amphibian
Amphibians, like other animals, generate corticosterone or cortisol glucocorticoid responses to stimuli perceived to be threatening. It is generally assumed that the corticosterone response of… Expand
  • 56
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Repeatability of baseline corticosterone and acute stress responses to capture, and patterns of reproductive hormones in vitellogenic and non-vitellogenic female Fijian ground frog (Platymantis…
The survival of animal species and individuals is largely determined by their ability to express physiological stress responses to predictable and unpredictable environmental challenges. Currently,… Expand
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The relationship between physiological stress and wildlife disease: consequences for health and conservation
Abstract. Wildlife populations are under increasing pressure from a variety of threatening processes, ranging from climate change to habitat loss, that can incite a physiological stress response. The… Expand
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Inverse urinary corticosterone and testosterone metabolite responses to different durations of restraint in the cane toad (Rhinella marina).
Non-invasive measurement of urinary corticosterone and testosterone metabolites in amphibians provides opportunities for endocrine studies of responses to physiological and psychological stressors.… Expand
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