Effect of long-term preservation methods on fecal glucocorticoid concentrations of grizzly bear and African elephant.

Abstract

Previous articleNext article No AccessTechnical CommentEffect of Long‐Term Preservation Methods on Fecal Glucocorticoid Concentrations of Grizzly Bear and African ElephantKathleen E. Hunt Samuel K. Wasser Kathleen E. HuntCenter for Conservation Biology, Department of Biology, University of Washington, Seattle, Washington 98195‐1800*Corresponding author; e‐mail: [email protected]. Search for more articles by this author Samuel K. WasserCenter for Conservation Biology, Department of Biology, University of Washington, Seattle, Washington 98195‐1800 Search for more articles by this author Center for Conservation Biology, Department of Biology, University of Washington, Seattle, Washington 98195‐1800PDFPDF PLUSFull Text Add to favoritesDownload CitationTrack CitationsPermissionsReprints Share onFacebookTwitterLinkedInRedditEmail SectionsMoreDetailsFiguresReferencesCited by Physiological and Biochemical Zoology Volume 76, Number 6November/December 2003 Sponsored by Division of Comparative Physiology and Biochemistry, Society for Integrative and Comparative Biology Article DOIhttps://doi.org/10.1086/380209 Views: 275Total views on this site Citations: 83Citations are reported from Crossref HistoryAccepted 7/22/03 © 2003 by The University of Chicago. 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Alberts Higher dominance rank is associated with lower glucocorticoids in wild female baboons: A rank metric comparison, Hormones and Behavior 125 (Sep 2020): 104826.https://doi.org/10.1016/j.yhbeh.2020.104826Fredrik Dalerum, André Ganswindt, Rupert Palme, Chiara Bettega, María del Mar Delgado, Martin Dehnhard, Susana Freire, Ricardo García González, Jaime Marcos, María Miranda, Víctor M. Vázquez, Teresa Sánchez Corominas, José Tuñón Huerta, Andreas Zedrosser, Andrés Ordiz, and Vincenzo Penteriani Methodological Considerations for Using Fecal Glucocorticoid Metabolite Concentrations as an Indicator of Physiological Stress in the Brown Bear (Ursus arctos), Physiological and Biochemical Zoology 93, no.33 (Mar 2020): 227–234.https://doi.org/10.1086/708630James P. Higham, Christiane Stahl-Hennig, Michael Heistermann Urinary suPAR: a non-invasive biomarker of infection and tissue inflammation for use in studies of large free-ranging mammals, Royal Society Open Science 7, no.22 (Feb 2020): 191825.https://doi.org/10.1098/rsos.191825Samrat Mondol, Rebecca K Booth, Samuel K Wasser, Steven Cooke Fecal stress, nutrition and reproductive hormones for monitoring environmental impacts on tigers (Panthera tigris), Conservation Physiology 8, no.11 (Jan 2020).https://doi.org/10.1093/conphys/coz091Kathleen E. Hunt, Jooke Robbins, C. Loren Buck, Martine Bérubé, Rosalind M. Rolland Evaluation of fecal hormones for noninvasive research on reproduction and stress in humpback whales (Megaptera novaeangliae), General and Comparative Endocrinology 280 (Sep 2019): 24–34.https://doi.org/10.1016/j.ygcen.2019.04.004Micaela B. Ruiz, Gabina V. Eguizábal, Daniel P. Villarreal, Juan M. Busso, Abel G. López Inhibitory action of thymol on fecal microbial activity in Tamandua tetradactyla and its effect on glucocorticoid metabolite measurement, General and Comparative Endocrinology 280 (Sep 2019): 91–96.https://doi.org/10.1016/j.ygcen.2019.04.015Vinod Kumar, Muthulingam Pradheeps, Adiseshu Kokkiligadda, Rajashekhar Niyogi, Govindhaswamy Umapathy Non-Invasive Assessment of Physiological Stress in Captive Asian Elephants, Animals 9, no.88 (Aug 2019): 553.https://doi.org/10.3390/ani9080553Shiqiang Zhang, Zhenwei Cui, Yifeng Zhang, Baishi Wang, Meilin Zhu, Jiqi Lu, Zhenlong Wang Low-ranking individuals present high and unstable fecal cortisol levels in provisioned free-ranging adult male rhesus macaques (Macaca mulatta) during the birth season in a mountain area of northern China, Primates 59, no.66 (Oct 2018): 517–522.https://doi.org/10.1007/s10329-018-0692-5Innocent Damudu Peter, Abd Wahid Haron, Faez Firdaus Abdullah Jesse, Mokrish Ajat, Mark Hiew Wen Han, Wan Nor Fitri, Muhammad Sanusi Yahaya, Mohammed Saad M. Alamaary Opportunities and challenges associated with fecal progesterone metabolite analysis, Veterinary World 11, no.1010 (Oct 2018): 1466–1472.https://doi.org/10.14202/vetworld.2018.1466-1472Sreedhar Vijayakrishnan, Mavatur Ananda Kumar, G. Umapathy, Vinod Kumar, Anindya Sinha Physiological stress responses in wild Asian elephants Elephas maximus in a human-dominated landscape in the Western Ghats, southern India, General and Comparative Endocrinology 266 (Sep 2018): 150–156.https://doi.org/10.1016/j.ygcen.2018.05.009Judith T. Webber, Michelle D. Henley, Yolanda Pretorius, Michael J. Somers, Andre Ganswindt Changes in African Elephant (Loxodonta africana) faecal steroid concentrations post-defaecation, Bothalia 48, no.22 (Jun 2018).https://doi.org/10.4102/abc.v48i2.2312Gholib Gholib, Michael Heistermann, Muhammad Agil, Iman Supriatna, Bambang Purwantara, Taufiq Purna Nugraha, Antje Engelhardt Comparison of fecal preservation and extraction methods for steroid hormone metabolite analysis in wild crested macaques, Primates 59, no.33 (Feb 2018): 281–292.https://doi.org/10.1007/s10329-018-0653-zErika T. Stevenson, Eric M. Gese, Lorin A. Neuman-Lee, Susannah S. French Levels of plasma and fecal glucocorticoid metabolites following an ACTH challenge in male and female coyotes (Canis latrans), Journal of Comparative Physiology B 188, no.22 (Oct 2017): 345–358.https://doi.org/10.1007/s00360-017-1125-2Jennifer E. Flower, Terry M. Norton, Kimberly M. Andrews, Clare E. Parker, L. Michael Romero, Kelly E. Rockwell, Mark A. Mitchell BASELINE CORTICOSTERONE, HEMATOLOGY, AND BIOCHEMISTRY RESULTS AND CORRELATIONS TO REPRODUCTIVE SUCCESS IN NESTING LOGGERHEAD SEA TURTLES ( CARETTA CARETTA ), Journal of Zoo and Wildlife Medicine 49, no.11 (Mar 2018): 9–17.https://doi.org/10.1638/2017-0051R1.1Adam Zbyryt, Jakub W Bubnicki, Dries P J Kuijper, Martin Dehnhard, Marcin Churski, Krzysztof Schmidt, Bob Wong Do wild ungulates experience higher stress with humans than with large carnivores?, Behavioral Ecology 29, no.11 (Nov 2017): 19–30.https://doi.org/10.1093/beheco/arx142RM Rolland, WA McLellan, MJ Moore, CA Harms, EA Burgess, KE Hunt Fecal glucocorticoids and anthropogenic injury and mortality in North Atlantic right whales Eubalaena glacialis, Endangered Species Research 34 (Nov 2017): 417–429.https://doi.org/10.3354/esr00866A.M. Swinbourne, S.D. Johnston, T.M. Janssen, A. Lisle, T. Keeley Validation of techniques to measure reproductive hormones in the urine of female southern hairy-nosed wombats (Lasiorhinus latifrons), General and Comparative Endocrinology 252 (Oct 2017): 130–141.https://doi.org/10.1016/j.ygcen.2017.08.003Juliette Di Francesco, Nora Navarro-Gonzalez, Katherine Wynne-Edwards, Stephanie Peacock, Lisa-Marie Leclerc, Matilde Tomaselli, Tracy Davison, Anja Carlsson, Susan Kutz Qiviut cortisol in muskoxen as a potential tool for informing conservation strategies, Conservation Physiology 5, no.11 (Sep 2017).https://doi.org/10.1093/conphys/cox052Taufiq Purna Nugraha, Michael Heistermann, Muhammad Agil, Bambang Purwantara, Iman Supriatna, Gholib Gholib, Carel P. van Schaik, Tony Weingrill Validation of a field-friendly extraction and storage method to monitor fecal steroid metabolites in wild orangutans, Primates 58, no.22 (Oct 2016): 285–294.https://doi.org/10.1007/s10329-016-0583-6Katy Scott, Michael Heistermann, Michael A. Cant, Emma I. K. Vitikainen Group size and visitor numbers predict faecal glucocorticoid concentrations in zoo meerkats, Royal Society Open Science 4, no.44 (Apr 2017): 161017.https://doi.org/10.1098/rsos.161017Peter Corkeron, Rosalind M. Rolland, Kathleen E. Hunt, Scott D. Kraus A right whale pootree: classification trees of faecal hormones identify reproductive states in North Atlantic right whales (Eubalaena glacialis), Conservation Physiology 5, no.11 (Mar 2017).https://doi.org/10.1093/conphys/cox006Ben Dantzer, Sarah E. Westrick, Freya van Kesteren Relationships between Endocrine Traits and Life Histories in Wild Animals: Insights, Problems, and Potential Pitfalls, Integrative and Comparative Biology 56, no.22 (Jun 2016): 185–197.https://doi.org/10.1093/icb/icw051Hao-Yu Shih, Jane-Fang Yu, Lih-Chiann Wang STEREOTYPIC BEHAVIORS IN BEARS, Taiwan Veterinary Journal 42, no.0101 (Mar 2016): 11–17.https://doi.org/10.1142/S168264851530004XMichael Heistermann, James P. Higham Urinary neopterin, a non-invasive marker of mammalian cellular immune activation, is highly stable under field conditions, Scientific Reports 5, no.11 (Nov 2015).https://doi.org/10.1038/srep16308Subhadeep Bhattacharjee, Vinod Kumar, Mithileshwari Chandrasekhar, Manjari Malviya, Andre Ganswindt, Krishnamurthy Ramesh, Kalyanasundaram Sankar, Govindhaswamy Umapathy, Balasubramanian Senthilkumaran Glucocorticoid Stress Responses of Reintroduced Tigers in Relation to Anthropogenic Disturbance in Sariska Tiger Reserve in India, PLOS ONE 10, no.66 (Jun 2015): e0127626.https://doi.org/10.1371/journal.pone.0127626Eve Davidian, Sarah Benhaiem, Alexandre Courtiol, Heribert Hofer, Oliver P. Höner, Martin Dehnhard, Diana Fisher Determining hormone metabolite concentrations when enzyme immunoassay accuracy varies over time, Methods in Ecology and Evolution 6, no.55 (Feb 2015): 576–583.https://doi.org/10.1111/2041-210X.12338S. Pellegrini, J.M. Busso, A. Lèche, R.H. Marin Effects of diet, time since defecation, and drying process of the droppings on corticosterone metabolite measurements in Japanese quail, Poultry Science 94, no.55 (May 2015): 1068–1074.https://doi.org/10.3382/ps/pev072Yasmine N. Majchrzak, Gabriela F. Mastromonaco, Wendy Korver, Gary Burness Use of salivary cortisol to evaluate the influence of rides in dromedary camels, General and Comparative Endocrinology 211 (Jan 2015): 123–130.https://doi.org/10.1016/j.ygcen.2014.11.007Jennifer E. Flower, Terry M. Norton, Kimberly M. Andrews, Steven E. Nelson, Clare E. Parker, L. Michael Romero, Mark A. Mitchell Baseline plasma corticosterone, haematological and biochemical results in nesting and rehabilitating loggerhead sea turtles ( Caretta caretta ), Conservation Physiology 3, no.11 (Mar 2015): cov003.https://doi.org/10.1093/conphys/cov003Tempe Parnell, Edward J. Narayan, Vere Nicolson, Patrick Martin-Vegue, Al Mucci, Jean-Marc Hero Maximizing the reliability of non-invasive endocrine sampling in the tiger ( Panthera tigris ): environmental decay and intra-sample variation in faecal glucocorticoid metabolites, Conservation Physiology 3, no.11 (Dec 2015): cov053.https://doi.org/10.1093/conphys/cov053Michela Balestri, Marta Barresi, Marco Campera, Valentina Serra, Jean Baptiste Ramanamanjato, Michael Heistermann, Giuseppe Donati, Jason M. Kamilar Habitat Degradation and Seasonality Affect Physiological Stress Levels of Eulemur collaris in Littoral Forest Fragments, PLoS ONE 9, no.99 (Sep 2014): e107698.https://doi.org/10.1371/journal.pone.0107698Vinod Kumar, Vivekananda Palugulla Reddy, Adiseshu Kokkiligadda, Sisinthy Shivaji, Govindhaswamy Umapathy Non-invasive assessment of reproductive status and stress in captive Asian elephants in three south Indian zoos, General and Comparative Endocrinology 201 (May 2014): 37–44.https://doi.org/10.1016/j.ygcen.2014.03.024K. L. Edwards, H. M. McArthur, T. Liddicoat, S. L. Walker A practical field extraction method for non-invasive monitoring of hormone activity in the black rhinoceros, Conservation Physiology 2, no.11 (Feb 2014): cot037–cot037.https://doi.org/10.1093/conphys/cot037K.S. Gobush, R.K. Booth, S.K. Wasser Validation and application of noninvasive glucocorticoid and thyroid hormone measures in free-ranging Hawaiian monk seals, General and Comparative Endocrinology 195 (Jan 2014): 174–182.https://doi.org/10.1016/j.ygcen.2013.10.020R. Rimbach, A. Link, M. Heistermann, C. Gomez-Posada, N. Galvis, E. W. Heymann Effects of logging, hunting, and forest fragment size on physiological stress levels of two sympatric ateline primates in Colombia, Conservation Physiology 1, no.11 (Nov 2013): cot031–cot031.https://doi.org/10.1093/conphys/cot031Cheryl Frederick, Kathleen Hunt, Randall Kyes, Darin Collins, Barbara Durrant, James Ha, Samuel K. Wasser Social influences on the estrous cycle of the captive sun bear ( Helarctos Malayanus ), Zoo Biology 32, no.66 (Sep 2013): 581–591.https://doi.org/10.1002/zoo.21092Christopher J. Schell, Julie K. Young, Elizabeth V. Lonsdorf, Rachel M. Santymire Anthropogenic and physiologically induced stress responses in captive coyotes, Journal of Mammalogy 94, no.55 (Oct 2013): 1131–1140.https://doi.org/10.1644/13-MAMM-A-001.1Brandon C. Wheeler, Barbara Tiddi, Urs Kalbitzer, Elisabetta Visalberghi, Michael Heistermann Methodological Considerations in the Analysis of Fecal Glucocorticoid Metabolites in Tufted Capuchins (Cebus apella), International Journal of Primatology 34, no.55 (Aug 2013): 879–898.https://doi.org/10.1007/s10764-013-9703-yRebecca Rimbach, Eckhard W. Heymann, Andrés Link, Michael Heistermann Validation of an enzyme immunoassay for assessing adrenocortical activity and evaluation of factors that affect levels of fecal glucocorticoid metabolites in two New World primates, General and Comparative Endocrinology 191 (Sep 2013): 13–23.https://doi.org/10.1016/j.ygcen.2013.05.010Julia Eggermann, Jörn Theuerkauf, Bartosz Pirga, Artur Milanowski, Roman Gula Stress-Hormone Levels of Wolves in Relation to Breeding Season, Pack Size, Human Activity, and Prey Density, Annales Zoologici Fennici 50, no.33 (Jun 2013): 170–175.https://doi.org/10.5735/086.050.0304K. E. Hunt, M. J. Moore, R. M. Rolland, N. M. Kellar, A. J. Hall, J. Kershaw, S. A. Raverty, C. E. Davis, L. C. Yeates, D. A. Fauquier, T. K. Rowles, S. D. Kraus Overcoming the challenges of studying conservation physiology in large whales: a review of available methods, Conservation Physiology 1, no.11 (May 2013): cot006–cot006.https://doi.org/10.1093/conphys/cot006Urs Kalbitzer, Michael Heistermann, Sean Rands Long‐term storage effects in steroid metabolite extracts from baboon ( Papio sp.) faeces – a comparison of three commonly applied storage methods, Methods in Ecology and Evolution 4, no.55 (Apr 2013): 493–500.https://doi.org/10.1111/2041-210X.12054Jacob C. Dunn, Jurgi Cristóbal-Azkarate, Björn Schulte-Herbrüggen, Roberto Chavira, Joaquím J. Veà Travel Time Predicts Fecal Glucocorticoid Levels in Free-Ranging Howlers (Alouatta palliata), International Journal of Primatology 34, no.22 (Jan 2013): 246–259.https://doi.org/10.1007/s10764-013-9657-0Jeff Stetz, Kathleen Hunt, Katherine C. Kendall, Samuel K. Wasser, Frank Seebacher Effects of Exposure, Diet, and Thermoregulation on Fecal Glucocorticoid Measures in Wild Bears, PLoS ONE 8, no.22 (Feb 2013): e55967.https://doi.org/10.1371/journal.pone.0055967Bryan J. Macbeth, Marc R. L. Cattet, Martyn E. Obbard, Kevin Middel, David M. Janz Evaluation of hair cortisol concentration as a biomarker of long-term stress in free-ranging polar bears, Wildlife Society Bulletin 36, no.44 (Nov 2012): 747–758.https://doi.org/10.1002/wsb.219Steffen Foerster, Marina Cords, Steven L. Monfort, Antje Engelhardt Seasonal Energetic Stress in a Tropical Forest Primate: Proximate Causes and Evolutionary Implications, PLoS ONE 7, no.1111 (Nov 2012): e50108.https://doi.org/10.1371/journal.pone.0050108Kathryn Shutt, Joanna M. Setchell, Michael Heistermann Non-invasive monitoring of physiological stress in the Western lowland gorilla (Gorilla gorilla gorilla): Validation of a fecal glucocorticoid assay and methods for practical application in the field, General and Comparative Endocrinology 179, no.22 (Nov 2012): 167–177.https://doi.org/10.1016/j.ygcen.2012.08.008Nigel J. Cook Review: Minimally invasive sampling media and the measurement of corticosteroids as biomarkers of stress in animals, Canadian Journal of Animal Science 92, no.33 (Sep 2012): 227–259.https://doi.org/10.4141/cjas2012-045Wolfgang Goymann On the use of non-invasive hormone research in uncontrolled, natural environments: the problem with sex, diet, metabolic rate and the individual, Methods in Ecology and Evolution 3, no.44 (Apr 2012): 757–765.https://doi.org/10.1111/j.2041-210X.2012.00203.xCheryl Frederick, Kathleen E. Hunt, Randall Kyes, Darin Collins, Samuel K. Wasser Reproductive timing and aseasonality in the sun bear ( Helarctos malayanus ), Journal of Mammalogy 93, no.22 (Apr 2012): 522–531.https://doi.org/10.1644/11-MAMM-A-108.1C. Vynne, M. R. Baker, Z. K. Breuer, S. K. Wasser, David Reed Factors influencing degradation of DNA and hormones in maned wolf scat, Animal Conservation 15, no.22 (Nov 2011): 184–194.https://doi.org/10.1111/j.1469-1795.2011.00503.xAnja Weltring, Franka S. Schaebs, Susan E. Perry, Tobias Deschner Simultaneous measurement of endogenous steroid hormones and their metabolites with LC–MS/MS in faeces of a New World primate species, Cebus capucinus, Physiology & Behavior 105, no.22 (Jan 2012): 510–521.https://doi.org/10.1016/j.physbeh.2011.09.004Michael J. Sheriff, Ben Dantzer, Brendan Delehanty, Rupert Palme, Rudy Boonstra Measuring stress in wildlife: techniques for quantifying glucocorticoids, Oecologia 166, no.44 (Feb 2011): 869–887.https://doi.org/10.1007/s00442-011-1943-yB. J. Macbeth, M.R.L. Cattet, G. B. Stenhouse, M. L. Gibeau, D. M. Janz Hair cortisol concentration as a noninvasive measure of long-term stress in free-ranging grizzly bears (Ursus arctos): considerations with implications for other wildlife, Canadian Journal of Zoology 88, no.1010 (Oct 2010): 935–949.https://doi.org/10.1139/Z10-057Cheryl Frederick, Randall Kyes, Kathleen Hunt, Darin Collins, Barbara Durrant, Samuel K. Wasser Methods of estrus detection and correlates of the reproductive cycle in the sun bear (Helarctos malayanus), Theriogenology 74, no.77 (Oct 2010): 1121–1135.https://doi.org/10.1016/j.theriogenology.2010.05.010Steffen Foerster, Steven L. Monfort Fecal glucocorticoids as indicators of metabolic stress in female Sykes' monkeys (Cercopithecus mitis albogularis), Hormones and Behavior 58, no.44 (Sep 2010): 685–697.https://doi.org/10.1016/j.yhbeh.2010.06.002R. M. Santymire, D. M. Armstrong Development of a field-friendly technique for fecal steroid extraction and storage using the African wild dog (Lycaon pictus), Zoo Biology 29, no.33 (Apr 2009): 289–302.https://doi.org/10.1002/zoo.20248Ting-ting CAO, De-fu HU, Xiao-jie YU, Jie CAO, Kai LI, Feng ZHANG Physiological Stress of Captive and Released Adult Male Przewalski’s Horses in Winter, Arid Zone Research 26, no.22 (Apr 2010): 234–237.https://doi.org/10.3724/SP.J.1148.2009.00234Georgia J. Mason, Jake S. Veasey How should the psychological well-being of zoo elephants be objectively investigated?, Zoo Biology 29, no.22 (Mar 2010): 237–255.https://doi.org/10.1002/zoo.20256Noa Pinter-Wollman, Lynne A. Isbell, Lynette A. Hart Assessing translocation outcome: Comparing behavioral and physiological aspects of translocated and resident African elephants (Loxodonta africana), Biological Conservation 142, no.55 (May 2009): 1116–1124.https://doi.org/10.1016/j.biocon.2009.01.027Claudia Barelli, Michael Heistermann Monitoring Female Reproductive Status in White-Handed Gibbons (Hylobates lar) Using Fecal Hormone Analysis and Patterns of Genital Skin Swellings, (Feb 2009): 313–325.https://doi.org/10.1007/978-0-387-88604-6_15C. J. Hogg, T. L. Rogers Measuring Stress in Antarctic Seals, (Jun 2009): 263–270.https://doi.org/10.1007/978-3-540-93923-8_15Jason Munshi-South, Landry Tchignoumba, Janine Brown, Nicole Abbondanza, Jésus E. Maldonado, Ann Henderson, Alfonso Alonso Physiological indicators of stress in African forest elephants ( Loxodonta africana cyclotis ) in relation to petroleum operations in Gabon, Central Africa, Diversity and Distributions 14, no.66 (Nov 2008): 995–1003.https://doi.org/10.1111/j.1472-4642.2008.00509.xJulia Ostner, Peter Kappeler, Michael Heistermann Androgen and glucocorticoid levels reflect seasonally occurring social challenges in male redfronted lemurs (Eulemur fulvus rufus), Behavioral Ecology and Sociobiology 62, no.44 (Sep 2007): 627–638.https://doi.org/10.1007/s00265-007-0487-yClaudia Fichtel, Cornelia Kraus, André Ganswindt, Michael Heistermann Influence of reproductive season and rank on fecal glucocorticoid levels in free-ranging male Verreaux's sifakas (Propithecus verreauxi), Hormones and Behavior 51, no.55 (May 2007): 640–648.https://doi.org/10.1016/j.yhbeh.2007.03.005B.A. Pettitt, C.J. Wheaton, J.M. Waterman Effects of storage treatment on fecal steroid hormone concentrations of a rodent, the Cape ground squirrel (Xerus inauris), General and Comparative Endocrinology 150, no.11 (Jan 2007): 1–11.https://doi.org/10.1016/j.ygcen.2006.06.010Nadja Wielebnowski, Jason Watters Applying Fecal Endocrine Monitoring to Conservation and Behavior Studies of Wild Mammals: Important Considerations and Preliminary Tests, Israel Journal of Ecology & Evolution 53, no.3-43-4 (Mar 2013): 439–460.https://doi.org/10.1560/IJEE.53.3.439Rosalind M. Rolland, Kathleen E. Hunt, Scott D. Kraus, Samuel K. Wasser Assessing reproductive status of right whales (Eubalaena glacialis) using fecal hormone metabolites, General and Comparative Endocrinology 142, no.33 (Jul 2005): 308–317.https://doi.org/10.1016/j.ygcen.2005.02.002ERICH MÖSTL, SOPHIE RETTENBACHER, RUPERT PALME Measurement of Corticosterone Metabolites in Birds' Droppings: An Analytical Approach, Annals of the New York Academy of Sciences 1046, no.11 (Jan 2006): 17–34.https://doi.org/10.1196/annals.1343.004WOLFGANG GOYMANN Noninvasive Monitoring of Hormones in Bird Droppings: Physiological Validation, Sampling, Extraction, Sex Differences, and the Influence of Diet on Hormone Metabolite Levels, Annals of the New York Academy of Sciences 1046, no.11 (Jan 2006): 35–53.https://doi.org/10.1196/annals.1343.005CHADI TOUMA, RUPERT PALME Measuring Fecal Glucocorticoid Metabolites in Mammals and Birds: The Importance of Validation, Annals of the New York Academy of Sciences 1046, no.11 (Jan 2006): 54–74.https://doi.org/10.1196/annals.1343.006RUPERT PALME Measuring Fecal Steroids: Guidelines for Practical Application, Annals of the New York Academy of Sciences 1046, no.11 (Jan 2006): 75–80.https://doi.org/10.1196/annals.1343.007DOMINIK THIEL, SUSANNE JENNI-EIERMANN, RUPERT PALME Measuring Corticosterone Metabolites in Droppings of Capercaillies ( Tetrao urogallus ), Annals of the New York Academy of Sciences 1046, no.11 (Jan 2006): 96–108.https://doi.org/10.1196/annals.1343.009SAMUEL K. WASSER, KATHLEEN E. HUNT Noninvasive Measures of Reproductive Function and Disturbance in the Barred Owl, Great Horned Owl, and Northern Spotted Owl, Annals of the New York Academy of Sciences 1046, no.11 (Jan 2006): 109–137.https://doi.org/10.1196/annals.1343.010KATHARINA HIRSCHENHAUSER, KURT KOTRSCHAL, ERICH MÖSTL Synthesis of Measuring Steroid Metabolites in Goose Feces, Annals of the New York Academy of Sciences 1046, no.11 (Jan 2006): 138–153.https://doi.org/10.1196/annals.1343.011 Christina G. von der Ohe , Samuel K. Wasser , Kathleen E. Hunt , and Christopher Servheen Factors Associated with Fecal Glucocorticoids in Alaskan Brown Bears (Ursus arctos horribilis) C. G. von der Ohe, S. K. Wasser, K. E. Hunt, and C. Servheen, Physiological and Biochemical Zoology 77, no.22 (Jul 2015): 313–320.https://doi.org/10.1086/378139Samuel K Wasser, Barbara Davenport, Elizabeth R Ramage, Kathleen E Hunt, Margaret Parker, Christine Clarke, Gordon Stenhouse Scat detection dogs in wildlife research and management: application to grizzly and black bears in the Yellowhead Ecosystem, Alberta, Canada, Canadian Journal of Zoology 82, no.33 (Mar 2004): 475–492.https://doi.org/10.1139/z04-020