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Yan Z, Liu X, Liu H, Xu H, Liu Y, Li C, Wang B, Cui S, Jia T, Yang D, Zhang C, Liu X, Buesching CD, Liu D. Assessment of stress levels and reproductive condition in giant pandas: insights from hair, faecal and saliva samples. CONSERVATION PHYSIOLOGY 2024; 12:coae044. [PMID: 38962510 PMCID: PMC11221559 DOI: 10.1093/conphys/coae044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 05/29/2024] [Accepted: 06/14/2024] [Indexed: 07/05/2024]
Abstract
Concerted conservation efforts have brought the giant panda (Ailuropoda melanoleuca) back from the brink of extinction, but pandas continue to face anthropogenic threats in the wild and breeding success in captivity remains low. Because stress can have detrimental impacts on reproduction, monitoring stress- and sex-steroid levels would help assess the effectiveness of conservation mitigation measures in panda populations as well as monitor the welfare and reproductive health of captive animals. In this proof-of-concept study, we used faecal sex steroid and cortisol concentrations (n = 867 samples collected from five males and five females at Beijing Zoo every 4 days over the course of 12 months) as a reference to investigate if testosterone, estradiol, progesterone and cortisol can be meaningfully measured in panda hair (n = 10) using radio-immuno-assays. Additionally, we calculated the ratio of testosterone to cortisol (T:C ratio) for each male, which can provide a biomarker of stress and physical performance. Our findings revealed distinct monthly variations in faecal sex-steroid and cortisol concentrations, reflecting reproductive seasonality and visitor-related stress among individual pandas. Notably, the oldest male had a significantly lower T:C ratio than other males. Our results confirm that the level of sex steroids and cortisol can be assayed by panda hair, and the hair cortisol concentrations correlate significantly with that in faeces with one month lag behind (r = 0.68, P = 0.03). However, the concentrations of hormones detected in saliva are lower than those in faeces by two orders of magnitude, making it difficult to ensure accuracy. By assessing the applicability of hair, faecal and salivary sampling, we can infer their utility in monitoring the reproductive status and acute and chronic stress levels of giant pandas, thereby providing a means to gauge the success of ongoing habitat restoration efforts and to discuss the feasibility of sample collection from wild populations.
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Affiliation(s)
- Zheng Yan
- Key Laboratory for Biodiversity and Ecological Engineering of Ministry of Education, Department of Ecology, College of Life Sciences, Beijing Normal University, No.19, Xinjiekouwai Street, Haidian District, Beijing 100875, China
| | - Xiaoyan Liu
- Key Laboratory for Biodiversity and Ecological Engineering of Ministry of Education, Department of Ecology, College of Life Sciences, Beijing Normal University, No.19, Xinjiekouwai Street, Haidian District, Beijing 100875, China
| | - Haoqiu Liu
- Key Laboratory for Biodiversity and Ecological Engineering of Ministry of Education, Department of Ecology, College of Life Sciences, Beijing Normal University, No.19, Xinjiekouwai Street, Haidian District, Beijing 100875, China
| | - Haihong Xu
- Beijing Key Laboratory of Captive Wildlife Technologies, Beijing Zoo, No.137, Xizhimenwai Street, Xicheng District, Beijing 100044, China
| | - Yanhui Liu
- Beijing Key Laboratory of Captive Wildlife Technologies, Beijing Zoo, No.137, Xizhimenwai Street, Xicheng District, Beijing 100044, China
| | - Changqing Li
- Beijing Key Laboratory of Captive Wildlife Technologies, Beijing Zoo, No.137, Xizhimenwai Street, Xicheng District, Beijing 100044, China
| | - Bo Wang
- Beijing Key Laboratory of Captive Wildlife Technologies, Beijing Zoo, No.137, Xizhimenwai Street, Xicheng District, Beijing 100044, China
| | - Shengnan Cui
- Beijing Key Laboratory of Captive Wildlife Technologies, Beijing Zoo, No.137, Xizhimenwai Street, Xicheng District, Beijing 100044, China
| | - Ting Jia
- Beijing Key Laboratory of Captive Wildlife Technologies, Beijing Zoo, No.137, Xizhimenwai Street, Xicheng District, Beijing 100044, China
| | - Di Yang
- Beijing Key Laboratory of Captive Wildlife Technologies, Beijing Zoo, No.137, Xizhimenwai Street, Xicheng District, Beijing 100044, China
| | - Chenglin Zhang
- Beijing Key Laboratory of Captive Wildlife Technologies, Beijing Zoo, No.137, Xizhimenwai Street, Xicheng District, Beijing 100044, China
| | - Xuefeng Liu
- Beijing Key Laboratory of Captive Wildlife Technologies, Beijing Zoo, No.137, Xizhimenwai Street, Xicheng District, Beijing 100044, China
| | - Christina D Buesching
- Department of Biology, Irving K. Barber Faculty of Sciences, The University of British Columbia, Okanagan, Kelowna, British Columbia V1V 1V7, Canada
| | - Dingzhen Liu
- Key Laboratory for Biodiversity and Ecological Engineering of Ministry of Education, Department of Ecology, College of Life Sciences, Beijing Normal University, No.19, Xinjiekouwai Street, Haidian District, Beijing 100875, China
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Yan Z, Lei Y, Zhao P, Zhang D, Shen J, Zhang G, Wei R, Liu H, Liu X, He Y, Shen S, Liu D. Natural mating ability is associated with gut microbiota composition and function in captive male giant pandas. Ecol Evol 2024; 14:e11189. [PMID: 38571808 PMCID: PMC10985376 DOI: 10.1002/ece3.11189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 03/05/2024] [Accepted: 03/12/2024] [Indexed: 04/05/2024] Open
Abstract
The issue of poor sexual performance of some male giant pandas seriously impairs the growth and the genetic diversity of the captive population, yet there is still no clear understanding of the cause of the loss of this ability and its underlying mechanism. In this study, we analyzed the gut microbiota and its function in 72 fecal samples obtained from 20 captive male giant pandas, with an equal allocation between individuals capable and incapable of natural mating. Additionally, we investigated fecal hormone levels and behavioral differences between the two groups. A correlation analysis was then conducted among these factors to explore the influencing factors of their natural mating ability. The results showed significant differences in the composition of gut microbiota between the two groups of male pandas. The capable group had significantly higher abundance of Clostridium sensu stricto 1 (p adjusted = .0021, GLMM), which was positively correlated with fatty acid degradation and two-component system functions (Spearman, p adjusted < .05). Additionally, the capable group showed higher gene abundance in gut microbiota function including purine and pyrimidine metabolism and galactose metabolism, as well as pathways related to biological processes such as ribosome and homologous recombination (DEseq2, p adjusted < .05). We found no significant differences in fecal cortisol and testosterone levels between the two groups, and no difference was found in their behavior either. Our study provides a theoretical and practical basis for further studying the behavioral degradation mechanisms of giant pandas and other endangered mammal species.
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Affiliation(s)
- Zheng Yan
- Department of Ecology, College of Life Sciences, Key Laboratory for Biodiversity and Ecological Engineering of Ministry of EducationBeijing Normal UniversityBeijingHebeiChina
| | - Yinghu Lei
- Research Center for the Qinling Giant PandaShaanxi Rare Wildlife Rescue BaseXi'anShaanxiChina
| | - Pengpeng Zhao
- Research Center for the Qinling Giant PandaShaanxi Rare Wildlife Rescue BaseXi'anShaanxiChina
| | - Danhui Zhang
- Research Center for the Qinling Giant PandaShaanxi Rare Wildlife Rescue BaseXi'anShaanxiChina
| | - Jiena Shen
- Research Center for the Qinling Giant PandaShaanxi Rare Wildlife Rescue BaseXi'anShaanxiChina
| | - Guiquan Zhang
- China Conservation and Research Centre for the Giant PandaWolongSichuanChina
| | - Rongping Wei
- China Conservation and Research Centre for the Giant PandaWolongSichuanChina
| | - Haoqiu Liu
- Department of Ecology, College of Life Sciences, Key Laboratory for Biodiversity and Ecological Engineering of Ministry of EducationBeijing Normal UniversityBeijingHebeiChina
| | - Xiaoyan Liu
- Department of Ecology, College of Life Sciences, Key Laboratory for Biodiversity and Ecological Engineering of Ministry of EducationBeijing Normal UniversityBeijingHebeiChina
| | - Yan He
- Department of Ecology, College of Life Sciences, Key Laboratory for Biodiversity and Ecological Engineering of Ministry of EducationBeijing Normal UniversityBeijingHebeiChina
| | - Sijia Shen
- Department of Ecology, College of Life Sciences, Key Laboratory for Biodiversity and Ecological Engineering of Ministry of EducationBeijing Normal UniversityBeijingHebeiChina
| | - Dingzhen Liu
- Department of Ecology, College of Life Sciences, Key Laboratory for Biodiversity and Ecological Engineering of Ministry of EducationBeijing Normal UniversityBeijingHebeiChina
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3
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Ohtsubo T, Mizoguchi Y, Aita C, Imamura Y, Kobayashi M, Kunitake Y, Tateishi H, Ueno T, Monji A. Relationship between serum cortisol levels, stereotypies, and the presence of autism spectrum disorder in patients with severe intellectual disability. Sci Rep 2024; 14:7139. [PMID: 38531943 DOI: 10.1038/s41598-024-57459-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 03/18/2024] [Indexed: 03/28/2024] Open
Abstract
Stereotypies are one of the diagnostic criteria for autism spectrum disorder (ASD) and are common to both ASD and intellectual disability (ID). Previous studies have been inconclusive, with some showing a positive correlation between stereotypies and cortisol, while others have shown a negative correlation. We hypothesised and investigated the presence of ASD as one of the variables involved in this discrepancy. We tested the following hypotheses on serum cortisol in a total of 84 hospitalised patients with severe ID and ASD with severe ID. Hypothesis (1) Higher levels of stereotypies are associated with higher levels of serum cortisol. Hypothesis (2) The presence of ASD will moderate the association between stereotypies and high serum cortisol levels. The results of the analysis supported hypotheses (1) and (2). We also found that in the population with ID, serum cortisol levels were significantly lower in the ASD group compared to the non-ASD group. The present findings that the association between stereotypies and serum cortisol levels in people with severe ID is moderated by the presence of ASD suggest that the stress response system may function differently in people with ID and ASD than in the general population.
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Affiliation(s)
- Takeru Ohtsubo
- Department of Psychiatry, National Hospital Organization Hizen Psychiatric Medical Center, 160 Mitsu, Yoshinogari, Kanzaki, Saga, 842-0192, Japan.
| | - Yoshito Mizoguchi
- Department of Psychiatry, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga, 849-8501, Japan
| | - Chie Aita
- Department of Psychiatry, National Hospital Organization Hizen Psychiatric Medical Center, 160 Mitsu, Yoshinogari, Kanzaki, Saga, 842-0192, Japan
| | - Yoshiomi Imamura
- Department of Psychiatry, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga, 849-8501, Japan
| | - Momoko Kobayashi
- Department of Psychiatry, National Hospital Organization Hizen Psychiatric Medical Center, 160 Mitsu, Yoshinogari, Kanzaki, Saga, 842-0192, Japan
- Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Yutaka Kunitake
- Department of Psychiatry, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga, 849-8501, Japan
| | - Hiroshi Tateishi
- Department of Psychiatry, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga, 849-8501, Japan
| | - Takefumi Ueno
- Department of Psychiatry, National Hospital Organization Hizen Psychiatric Medical Center, 160 Mitsu, Yoshinogari, Kanzaki, Saga, 842-0192, Japan
| | - Akira Monji
- Department of Psychiatry, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga, 849-8501, Japan
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Alejandro J, Yamanashi Y, Nemoto K, Mouri K, Huang CW, Bercovitch FB, Huffman MA. Reducing stress and stereotypic behaviors in captive female pygmy slow lorises (Nycticebus pygmeaus). Am J Primatol 2023:e23495. [PMID: 37128737 DOI: 10.1002/ajp.23495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 03/20/2023] [Accepted: 04/08/2023] [Indexed: 05/03/2023]
Abstract
Improving captive conditions of pygmy slow lorises (Nekaris and Nijman have recently suggested that the pygmy slow loris should be called the pygmy loris and is distinctive enough to warrant a new genus, Xanthonycticebu) (Nycticebus pygmeaus) poses many challenges because detailed aspects of their lives in the wild are incomplete. This hinders efforts to replicate sustainable environments for them. To improve their well-being in captivity, eight rescued female pygmy slow lorises at the Japan Monkey Center (JMC) were socially housed in two types of groups following their solitary housing: two pairs and one group of four individuals. They spent much of their time in affiliative behaviors, as well as sharing sleeping sites after placement in a social group. The purpose of my study was to examine whether social housing helped in reducing stress by comparing fecal glucocorticoids and stereotypic behaviors when housed alone and when with conspecifics. Overall, the levels of fecal glucocorticoids were significantly lower when socially housed than when kept alone. One individual exhibited stereotypic behavior when housed alone, but this behavior disappeared after social housing. These findings support recent evidence that pygmy slow lorises are social animals and will benefit from group housing in captivity. We conclude that social housing of pygmy slow lorises improves their well-being by reducing stress levels, and that their group housing in captivity can provide dividends for the conservation of this endangered nocturnal primate because lorises intended for release should find it easier to adapt to natural conditions.
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Affiliation(s)
- Josue Alejandro
- Wildlife Research Center (WRC), Kyoto University, Inuyama, Aichi, Japan
| | - Yumi Yamanashi
- Wildlife Research Center (WRC), Kyoto University, Inuyama, Aichi, Japan
- Center for Research and Education of Wildlife (CREW), Kyoto City Zoo, Kyoto, Sakyo-ku, Japan
| | - Kei Nemoto
- Japan Monkey Centre (JMC), Inuyama, Aichi, Japan
| | - Keiko Mouri
- Wildlife Research Center (WRC), Kyoto University, Inuyama, Aichi, Japan
| | - Ching-Wen Huang
- Institute of Wildlife Conservation (IWC), Pingtung County, Taiwan
| | - Fred B Bercovitch
- Wildlife Research Center (WRC), Kyoto University, Inuyama, Aichi, Japan
| | - Michael A Huffman
- Wildlife Research Center (WRC), Kyoto University, Inuyama, Aichi, Japan
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5
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Access to Multiple Habitats Improves Welfare: A Case Study of Two Zoo-Housed Black Bears (Ursus americanus). JOURNAL OF ZOOLOGICAL AND BOTANICAL GARDENS 2023. [DOI: 10.3390/jzbg4010010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Using various forms of enrichment, animal care specialists encourage species-specific behaviors and discourage stereotypic behaviors. Within the zoo community, bears (Ursids spp.) are commonly housed, yet are prone to exhibiting stress-related behaviors. Here, we assess the effect of access to multiple habitats, including areas of off guest view, on the welfare of two American black bears (U. americanus) housed at the North Carolina Zoo. In this study, we looked at two behaviors, pacing and foraging to represent negative and positive welfare indicators. We performed logistic regressions to model the effect of access on these behaviors. Because having an animal visible to guests is important to consider when creating management plans, we also explored the effect of access on the bears’ visibility. We found that full access reduced the likelihood of pacing by an average of 13% and increased the likelihood of foraging by an average of 5%. Access to multiple areas reduced the probability of visibility by 57% for one individual but did not impact visibility of the other bear. This case study suggests the value of access to zoo animal welfare and should incite future research aimed at exploring the effects of access on various behavioral outcomes.
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6
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Pan L, Nian H, Zhang R, Liu H, Li C, Wei H, Yi R, Li J, Li X, Bao J. Stereotypic behaviors are associated with physiology and immunity differences in long-term confined sows. Physiol Behav 2022; 249:113776. [PMID: 35276120 DOI: 10.1016/j.physbeh.2022.113776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 03/07/2022] [Accepted: 03/07/2022] [Indexed: 11/25/2022]
Abstract
Pregnant sows in the confined environment have poor welfare and frequently perform stereotypic behaviors. In order to clarify whether highly stereotypic behavior is a sign of increased stress and successfully contributes to coping with or adaptation to adverse environment, fifty pregnant sows (Large White × Landrace) housed in stalls were selected to observe behaviors and analyze physiological parameters [cortisol, major acute phase protein (Pig-MAP) and C-reactive protein (CRP)], and immunological parameters [immunoglobin A (IgA), immunoglobin G (IgG), interleukin 6 (IL-6), interleukin 10 (IL-10), tumor necrosis factor alpha (TNF-α) and interferon gamma (IFN-γ)] in early, middle and late gestation (27th, 62nd and 91st day). A repeated-measures analysis and Friedman test was performed to analyze the differences of behaviors and physiological and immunological parameters. The results showed that lateral lying behavior increased significantly with the progress of sows' gestation, while standing and ventral lying behaviors significantly decreased (p < 0.05). Sham-chewing, bar-biting, trough-biting and rooting behaviors significantly reduced (p < 0.05). Furthermore, there was no significant difference in physiological and immune levels in different gestational periods (p > 0.05). The results also indicated that sham-chewing behavior was positively correlated with serum cortisol, IL-6, IL-10, and negatively correlated with serum IFN-γ in each gestational period (p < 0.05). Trough-biting behavior was positively correlated with serum TNF-α in middle and late gestation (p < 0.05). Rooting behavior was positively correlated with serum IgG in each gestational period, and positively correlated with serum Pig-MAP, IL-6, and IL-10 in middle and late gestation (p < 0.05). In conclusion, the sows with a high incidence of stereotypic behaviors tried to improve stress and humoral immunity to cope with the confined environment, and long-term confined sows might be in a chronic stress state.
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Affiliation(s)
- Lei Pan
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China; Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
| | - Haoyang Nian
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China; Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
| | - Runxiang Zhang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Honggui Liu
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China; Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, Harbin 150030, China
| | - Chun Li
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Haidong Wei
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Ran Yi
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Jianhong Li
- College of Life Science, Northeast Agricultural University, Harbin 150030, China
| | - Xiang Li
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China; Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, Harbin 150030, China.
| | - Jun Bao
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China; Key Laboratory of Swine Facilities Engineering, Ministry of Agriculture and Rural Affairs, Harbin 150030, China.
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Urine Metabolomics Reveals the Effects of Confined Environment on Mating Choice in Adult Male Giant Pandas. Physiol Behav 2022; 249:113744. [DOI: 10.1016/j.physbeh.2022.113744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 01/20/2022] [Accepted: 02/14/2022] [Indexed: 12/19/2022]
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Bernstein-Kurtycz LM, Wiatroski KG, Leeds A, Lukas KE. About pace: How variations in method and definition affect quantification of pacing in bears? Zoo Biol 2022; 41:365-372. [PMID: 35037291 DOI: 10.1002/zoo.21675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 10/08/2021] [Accepted: 01/04/2022] [Indexed: 11/11/2022]
Abstract
Repetitive pacing behavior is exhibited by many species in zoos and is particularly prevalent in carnivores with large home ranges, such as bears. Pacing can be a behavioral indicator of poor welfare, however, understanding this behavior can be challenging. As many bears that pace are singly housed, efforts to systematically examine and ameliorate pacing may be strengthened by multi-institutional studies. However, there is currently no standardized method to quantify pacing, which makes cross-institutional analyses of causal factors and intervening measures challenging. The purpose of this study was to compare multiple sampling methods and definitions for quantifying pacing in bears to understand how they affect outcome measures. We analyzed video recordings of two grizzly and two black bears pacing, using three sampling methods (continuous, instantaneous 30-s interval, instantaneous 1-min interval), and three definitions of pacing (AB-two repetitions of the path, ABA-three repetitions, ABAB-four repetitions). A generalized linear mixed model revealed that continuous and instantaneous 30-s interval methods captured more pacing than instantaneous 1-min methods, and definitions captured a decreasing amount of pacing from AB to ABA to ABAB. AB also captured the highest number of pacing bouts. The importance of comparability across institutions is growing, and a standard methodology and definition for recording pacing would be useful. We suggest that the combination of instantaneous sampling and the ABA definition presents a good balance between capturing the right data and being flexible enough for a variety of institutions to implement.
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Affiliation(s)
- Laura M Bernstein-Kurtycz
- Department of Conservation and Science, Cleveland Metroparks Zoo, Cleveland, Ohio, USA.,Case Western Reserve University, Cleveland, Ohio, USA
| | | | - Austin Leeds
- Disney's Animal Kingdom, Buena Vista, Florida, USA
| | - Kristen E Lukas
- Department of Conservation and Science, Cleveland Metroparks Zoo, Cleveland, Ohio, USA.,Case Western Reserve University, Cleveland, Ohio, USA
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9
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LaDue CA, Schulte BA. Pheromonal enrichment in the zoo: An empirical approach with Asian elephants (Elephas maximus). Appl Anim Behav Sci 2021. [DOI: 10.1016/j.applanim.2021.105228] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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10
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Social, Reproductive and Contextual Influences on Fecal Glucocorticoid Metabolites in Captive Yangtze Finless Porpoises (Neophocaena asiaeorientalis asiaeorientalis) and Bottlenose Dolphins (Tursiops truncatus). JOURNAL OF ZOOLOGICAL AND BOTANICAL GARDENS 2020. [DOI: 10.3390/jzbg1010003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Although the use of fecal glucocorticoid metabolite (FGCM) measurements as non-invasive biomarkers for the stress response in mammals has increased, few studies have been conducted in odontocetes. We investigated if animal sex, age, pregnancy or contextual variations (season, sampling time, enrichment, social separation and presence of visitors) influenced the FGCM concentrations in presumably healthy, captive and endangered Yangtze finless porpoises (YFPs, N = 4) and bottlenose dolphins (BDs, N = 3). For YFPs, the FGCM concentrations were influenced by season (p = 0.01), diurnal variation (p = 0.01) and pregnancy (p = 0.005). Contextual variables that were associated with increases in FGCM concentrations included social separations (p = 0.003) and numbers of visitors (p = 0.0002). Concentrations of FGCMs were lower (p = 0.001) after exposure to environmental enrichment. For BDs, enrichment was associated with reduced concentrations of FGCMs (p < 0.0001). The presence of visitors also influenced this species’ FGCM concentrations (p = 0.006). These results demonstrate that changes in the FGCM concentrations in YFPs and BDs may occur in response to contextual and social changes. In combination with other behavioral and physiological assessments, measurements of FGCMs may be a useful tool for monitoring cetacean welfare. Such monitoring may help researchers identify and better understand situations that may be stressful for animals and, therefore, improve management and husbandry. Furthermore, results from our study and inferences of the FGCM concentrations in cetaceans, and their potential relationship to stress, may be extrapolated to studies of free-ranging animals, which may help detect possible environmental or anthropogenic stressors that could be affecting these populations.
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11
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Wang Y, Hu X, Liu G, Hu D, Liu D. Influence of Solvents on Steroid Extraction from Animal Feces and Quantification Using Enzyme Immunoassay. WILDLIFE SOC B 2020. [DOI: 10.1002/wsb.1124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yihua Wang
- Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry No. 2 Dongxiaofu, Haidian District Beijing 100091 China
| | - Xiaolong Hu
- College of Animal Science and Technology Jiangxi Agricultural University Nanchang 330045 China
| | - Gang Liu
- Wetland Research Institute, Beijing Key Laboratory of Wetland Services and Restoration Chinese Academy of Forestry Xiangshan Road, Haidian District Beijing 100091 China
| | - Defu Hu
- Laboratory of Non‐invasive Research Technology for Endangered Species, College of Nature Conservation Beijing Forestry University No. 35 Qinghua East Road, Haidian District Beijing 100083 China
| | - Dongping Liu
- Key Laboratory of Forest Ecology and Environment of National Forestry and Grassland Administration Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry No. 2 Dongxiaofu, Haidian District Beijing 100091 China
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12
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Martin MS, Owen M, Wintle NJP, Zhang G, Zhang H, Swaisgood RR. Stereotypic behaviour predicts reproductive performance and litter sex ratio in giant pandas. Sci Rep 2020; 10:7263. [PMID: 32350317 PMCID: PMC7190838 DOI: 10.1038/s41598-020-63763-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 04/01/2020] [Indexed: 11/09/2022] Open
Abstract
Breeding and welfare problems confront many conservation breeding programs. Stereotypies-repetitive, unvarying, functionless behaviours -are common abnormal behaviours that often arise in suboptimal conditions. While the role of stereotypies in welfare assessment is well studied, few investigations address the relationship between stereotypic behaviour and reproduction. We examined the correlation between stereotypic behaviour and reproductive performance in 101 giant pandas (Ailuropoda melanoleuca). High stereotyping males copulated more and produced more cubs, suggesting that highly sexually motivated males were prone to stereotypy but also had high reproductive competence. Female stereotypies were negatively associated with all reproductive measures closely tied to behavioural competence: high stereotyping females were less likely to copulate, less likely to mother-rear cubs, and-probably a result of poor maternal care-had lower cub survival. However, females that exhibited stereotypies were more likely to produce a cub, suggesting stereotypies are tied to behavioural but not physiological competence. High stereotyping female pandas also displayed strong and consistent bias toward production of female offspring while paternal relationship to sex allocation was the reverse. These results are consistent with stress-mediated sex allocation theory. Our findings raise concern about differential reproductive success among high and low stereotyping pandas, and possible genetic adaptation to captivity.
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Affiliation(s)
- Meghan S Martin
- Institute for Conservation Research, San Diego Zoo Global, 15600 San Pasqual Valley Rd., Escondido, California, 92027, USA.,PDXWildlife, 9233 SW Brier Pl., Portland, OR, 97219, USA
| | - Megan Owen
- Institute for Conservation Research, San Diego Zoo Global, 15600 San Pasqual Valley Rd., Escondido, California, 92027, USA
| | | | - Guiquan Zhang
- China Conservation and Research Center for the Giant Panda, Wolong, Sichuan, 623006, P.R. China
| | - Hemin Zhang
- China Conservation and Research Center for the Giant Panda, Wolong, Sichuan, 623006, P.R. China
| | - Ronald R Swaisgood
- Institute for Conservation Research, San Diego Zoo Global, 15600 San Pasqual Valley Rd., Escondido, California, 92027, USA.
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13
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Social and Reproductive Behavior of Captive Malayan Tapirs' (Tapirus indicus): Interactions with Maternal Experience and Environmental Conditions. Sci Rep 2020; 10:4117. [PMID: 32139707 PMCID: PMC7058076 DOI: 10.1038/s41598-020-60429-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Accepted: 01/31/2020] [Indexed: 11/20/2022] Open
Abstract
Malayan tapirs are listed as endangered and are bred in captivity under governmental management. The success of captive breeding programs varies and the underlying causes are unclear. Here, we investigate how tapir reproduction is affected by previous breeding experience, enclosure type/size and visitor numbers so that appropriate steps can be taken to achieve self-sustaining captive populations. Data on social and reproductive behaviors were collected from six tapirs (three males, three females), from different breeding centers in Peninsular Malaysia for 18 weeks. Results revealed that social and reproductive behavior of both sexes was significantly influenced by social and environmental conditions. Larger enclosure size tended to increase social and reproductive behaviors, whereas high number of visitors reduced initial interaction between males and females. No specific breeding month was confirmed; however, reproductive behaviors were highest in April. Overall, this study contributes to a better understanding of the relationships between social and reproductive behaviors, and captive environments on Malayan tapirs. In future, frequency of sexual interactions should be monitored regularly to identify animals exhibiting below-average frequency and who might, therefore, be prone to reproductive difficulties.
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Tang R, Li W, Zhu D, Shang X, Guo X, Zhang L. Raging elephants: effects of human disturbance on physiological stress and reproductive potential in wild Asian elephants. CONSERVATION PHYSIOLOGY 2020; 8:coz106. [PMID: 32010447 PMCID: PMC6985900 DOI: 10.1093/conphys/coz106] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 10/23/2019] [Accepted: 01/18/2020] [Indexed: 06/10/2023]
Abstract
Human disturbance has become a widespread threat to wildlife viability. The Asian elephant (Elephas maximus), an endangered and disturbance-prone species, is under severe threat from habitat loss and fragmentation, human-elephant conflict and poaching. Establishing connections between human disturbance, stress responses and reproduction is crucial for assessing the long-term survivability of a species and will provide critical information for conservation management. The current study investigated the effects of human disturbance on population-level stress responses and stress-related effects on reproductive potential of wild Asian elephants in Xishuangbanna Dai Autonomous Prefecture, China. We used a radioimmunoassay to measure the concentration of fecal cortisol and estradiol in 257 samples collected from five local populations at 15 sites over 4 years. Human disturbance in Xishuangbanna was quantified based on the Ecological-Niche Factor Analysis model. We found that fecal cortisol concentrations were strongly positively correlated with the degree of human disturbance and increased markedly with the expansion of tea plantations. Percentage of non-stressed individuals in a population was higher depending on the extend of undisturbed area in their home ranges. Fecal estradiol concentrations decreased significantly with increasing stress levels. Our results suggest that human disturbance poses environmental challenges to wild Asian elephant populations, and chronic exposure to human disturbance could lead to population decline. The study demonstrates the efficacy of non-invasive endocrine monitoring for further informing management decisions and developing conservation strategies.
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Affiliation(s)
- Ruchun Tang
- Key Laboratory for Biodiversity Science and Ecological Engineering, Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing 100875, China
| | - Wenwen Li
- Key Laboratory for Biodiversity Science and Ecological Engineering, Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing 100875, China
| | - Di Zhu
- Key Laboratory for Biodiversity Science and Ecological Engineering, Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing 100875, China
| | - Xiaotong Shang
- Key Laboratory for Biodiversity Science and Ecological Engineering, Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing 100875, China
| | - Xianming Guo
- Research Institute of Xishuangbanna National Nature Reserve, Jinghong 666100, China
| | - Li Zhang
- Key Laboratory for Biodiversity Science and Ecological Engineering, Ministry of Education, College of Life Sciences, Beijing Normal University, Beijing 100875, China
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15
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When food access is challenging: evidence of wood mice ability to balance energy budget under predation risk and physiological stress reactions. Behav Ecol Sociobiol 2019. [DOI: 10.1007/s00265-019-2756-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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Hernández MC, Navarro-Castilla Á, Planillo A, Sánchez-González B, Barja I. The landscape of fear: Why some free-ranging rodents choose repeated live-trapping over predation risk and how it is associated with the physiological stress response. Behav Processes 2018; 157:125-132. [PMID: 30266620 DOI: 10.1016/j.beproc.2018.09.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 09/17/2018] [Accepted: 09/21/2018] [Indexed: 12/27/2022]
Abstract
Live trapping is an essential element of field ecological studies. However, the act of trapping provides two types of conditional benefits (food from the bait when hungry, and refuge from a predator when threatened) against one type of drawback (confinement). Our understanding of how animals assess the two benefits against the lone risk determines how we interpret classic field studies in chemical ecology and wildlife management. Here, we studied wood mice responses to these risks and rewards of field trapping by examining experience through recapture and faecal corticosterone metabolites (FCM) as a physiological response indicator. Wood mice were live-trapped in two different plots subjected to two distinct phases: phase 1, absence of predator cues, and phase 2, in which traps were treated with red fox faeces. During phase 1, the recapture percentage was lower indicating that mice avoided traps while FCM levels in recaptured mice were higher. On the contrary, during phase 2, despite the total number of captures was lower we found an increase in the recapture percentage and FCM levels did not increase in recaptured mice. Our results suggest that under increased risk perception traps could be likely considered as a suitable shelter and thus, for some individuals the benefits of traps may outweigh their risks. In addition, we discovered that the effects of combining two stressors do not result in the addition of the response originated by each factor separately.
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Affiliation(s)
- M C Hernández
- Department of Biology, Universidad Autónoma de Madrid, C/ Darwin 2, Campus Universitario de Cantoblanco, 28049, Madrid, Spain.
| | - Á Navarro-Castilla
- Department of Biology, Universidad Autónoma de Madrid, C/ Darwin 2, Campus Universitario de Cantoblanco, 28049, Madrid, Spain
| | - A Planillo
- Terrestrial Ecology Group (TEG), Department of Ecology, Universidad Autónoma de Madrid, C. Darwin 2, 28049, Cantoblanco, Madrid, Spain; Department of Ecological Dynamics, Leibniz Institute for Zoo and Wildlife Research (IZW), Alfred-Kowalke-Straße 17, 10315, Berlin, Germany
| | - B Sánchez-González
- Department of Biology, Universidad Autónoma de Madrid, C/ Darwin 2, Campus Universitario de Cantoblanco, 28049, Madrid, Spain
| | - I Barja
- Department of Biology, Universidad Autónoma de Madrid, C/ Darwin 2, Campus Universitario de Cantoblanco, 28049, Madrid, Spain
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Sánchez-González B, Planillo A, Navarro-Castilla Á, Barja I. The concentration of fear: mice’s behavioural and physiological stress responses to different degrees of predation risk. Naturwissenschaften 2018; 105:16. [DOI: 10.1007/s00114-018-1540-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Revised: 01/10/2018] [Accepted: 01/12/2018] [Indexed: 11/29/2022]
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18
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Scheun J, Bennett N, Nowack J, Laver P, Ganswindt A. Putative drivers of adrenocortical activity in captive African lesser bushbaby (Galago moholi). CAN J ZOOL 2017. [DOI: 10.1139/cjz-2016-0223] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In seasonal breeders, periods of reproductive activity often coincide with high levels of glucocorticoids. We studied seven male and seven female African lesser bushbabies (Galago moholi A. Smith, 1836) over two mating periods via noninvasive faecal hormone metabolite monitoring to investigate the relationship between reproductive and adrenocortical hormone activity. We used linear mixed-effect models to investigate the effect of physiological (endocrine) variables on faecal glucocorticoid metabolite concentrations. Our results indicate faecal androgen (males) and progestagen metabolite (females) concentrations as the variables best able to explain variability in faecal glucocorticoid metabolite concentrations. However, the models explained only a fraction (26% and 12%, respectively) of the observed variability and graphical analysis suggests a biologically relevant difference in faecal glucocorticoid metabolite concentrations between captive and free-ranging animals during nonreproductive periods. Thus, captivity may have affected glucocorticoid output in our focal animals, potentially weakening the expected relationship between reproductive activity and faecal glucocorticoid metabolite variability. Due to the ease of faecal and observational sample collection, a large number of studies monitoring adrenocortical activity in wildlife are conducted using only captive settings, with inferences unquestioned when applied to free-ranging scenarios. Our study cautions against this practice, as particular housing or management conditions may influence the pattern of adrenocortical activity.
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Affiliation(s)
- J. Scheun
- Endocrine Research Laboratory, Department of Anatomy and Physiology, Faculty of Veterinary Science, University of Pretoria, Onderstepoort 0110, Republic of South Africa
- Department of Zoology and Entomology, University of Pretoria, Pretoria 0028, Republic of South Africa
- Department of Research and Services, National Zoological Gardens of South Africa, Pretoria 0001, Republic of South Africa
| | - N.C. Bennett
- Department of Zoology and Entomology, University of Pretoria, Pretoria 0028, Republic of South Africa
| | - J. Nowack
- Department of Animal Ecology and Conservation, Biocentre Grindel, University of Hamburg, 20146 Hamburg, Germany
- Department of Integrative Biology and Evolution, University of Veterinary Medicine, Savoyenstrasse 1, Vienna 1160, Austria
| | - P.N. Laver
- Endocrine Research Laboratory, Department of Anatomy and Physiology, Faculty of Veterinary Science, University of Pretoria, Onderstepoort 0110, Republic of South Africa
| | - A. Ganswindt
- Endocrine Research Laboratory, Department of Anatomy and Physiology, Faculty of Veterinary Science, University of Pretoria, Onderstepoort 0110, Republic of South Africa
- Department of Zoology and Entomology, University of Pretoria, Pretoria 0028, Republic of South Africa
- Department of Research and Services, National Zoological Gardens of South Africa, Pretoria 0001, Republic of South Africa
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Cless IT, Lukas KE. Variables affecting the manifestation of and intensity of pacing behavior: A preliminary case study in zoo-housed polar bears. Zoo Biol 2017; 36:307-315. [DOI: 10.1002/zoo.21379] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 08/11/2017] [Accepted: 08/22/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Isabelle T. Cless
- Department of Conservation and Science; Cleveland Metroparks Zoo; Cleveland Ohio
- Department of Biology; Case Western Reserve University; Cleveland Ohio
| | - Kristen E. Lukas
- Department of Conservation and Science; Cleveland Metroparks Zoo; Cleveland Ohio
- Department of Biology; Case Western Reserve University; Cleveland Ohio
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20
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Wood mice modify food intake under different degrees of predation risk: influence of acquired experience and degradation of predator’s faecal volatile compounds. CHEMOECOLOGY 2017. [DOI: 10.1007/s00049-017-0237-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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21
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Vaz J, Narayan EJ, Dileep Kumar R, Thenmozhi K, Thiyagesan K, Baskaran N. Prevalence and determinants of stereotypic behaviours and physiological stress among tigers and leopards in Indian zoos. PLoS One 2017; 12:e0174711. [PMID: 28414723 PMCID: PMC5393558 DOI: 10.1371/journal.pone.0174711] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Accepted: 03/14/2017] [Indexed: 11/23/2022] Open
Abstract
India's charismatic wildlife species are facing immense pressure from anthropogenic-induced environmental perturbations. Zoos play a major role in the conservation of threatened species, but their adaptation in captivity is posing a major challenge globally. Stress from inadequate adaptation could lead to suppression of cognitive functioning and increased display of stereotypic behaviour. It is thus necessary to measure biological traits like behaviour, stress physiology, and contextual factors driving the animals maintained at zoos. In this study, we assessed stereotypic behaviour and stress physiology employing standard behaviour scoring, non-invasive stress monitoring, and their contextual drivers in a sub-population of two large felid species managed in six Indian zoos. The prevalence and intensity of stereotypic behaviours and levels of faecal corticosterone metabolites (FCM) were ascertained among 41 Royal Bengal tigers Panthera tigris tigris and 21 Indian leopards Panthera pardus fusca between April 2014 and March 2015. Behavioural observations showed that tigers spent more time stereotyping (12%) than leopards (7%) during daylight hours. Stress levels assessed using FCM revealed that tigers (23.6 ± 1.62 ng/g) had marginally lower level of corticosterone metabolites than leopards (27.2 ±1.36 ng/g). Stereotypic behaviour increased significantly with FCM level when the effect of heath status was controlled in tigers, and the effects tree cover, stone, den and keeper attitude controlled in leopards. Comparison of stereotypes of tigers with various biological and environmental factors using binary logistic regression revealed that stereotypic prevalence decreased with increased enclosure size, and enclosure enrichments like presence of pools and stones, when managed socially with conspecifics, and with positive keeper attitude, these factors accounting for 43% of variations in stereotypic prevalence among tigers. Stereotype among leopards was significantly absent when associated with increased tree cover and presence of pool, and den in the enclosure, age and among zoo-born than wild-born ones. These factors explain 81% of variations in stereotypic prevalence in them. A comparison of FCM levels with context-dependent factors revealed that stress levels among tigers decreased significantly with enclosure size and with individuals from nil to low, and severity of health issues. These factors explain 64% of variations in FCM levels. In leopards, the presence of stones in the enclosure and keepers with positive attitude resulted in significant decrease in FCM levels, these factors together accounting for 94% of variations. Multiple regressions on selected variables based on Factor Analysis of Mixed Data showed that in tigers the intensity of stereotype decreased significantly with enclosure size, sociality and positive keeper attitude and FCM level with health problems. Similarly, analyses in leopards revealed that intensity of stereotype decreased significantly with tree cover, age and FCM level with positive keeper attitude. Overall, our study suggests that to reduce stereotypes and stress level, tigers in captivity should be managed in larger enclosures enriched with pool, and stones, and in appropriate social conditions with adequate veterinary care. Leopards should be managed in enclosures with dense tree cover, pool, stones and den. Positive keeper attitude plays a crucial role in the welfare of both the species in captivity. Our study is promising and is comparable with their natural behaviour in the wild; for example, tigers require larger natural habitats, while leopards can manage even with smaller isolated patches but with dense vegetation cover.
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Affiliation(s)
- Janice Vaz
- Department of Zoology & Wildlife Biology, A.V.C. College (Autonomous), Mannampandal, Mayiladuthurai, Tamil Nadu, India
| | - Edward J Narayan
- School of Science and Helath, Western Sydney University, Hawkesbury Campus, Richmond NSW, Australia
| | - R Dileep Kumar
- Centre for Venom Informatics, Department of Computational Biology & Bio-informatics, Kariavattom North Campus, University of Kerala, Kerala, India
| | - K Thenmozhi
- Department of Zoology & Wildlife Biology, A.V.C. College (Autonomous), Mannampandal, Mayiladuthurai, Tamil Nadu, India
| | - Krishnamoorthy Thiyagesan
- Department of Zoology & Wildlife Biology, A.V.C. College (Autonomous), Mannampandal, Mayiladuthurai, Tamil Nadu, India
| | - Nagarajan Baskaran
- Department of Zoology & Wildlife Biology, A.V.C. College (Autonomous), Mannampandal, Mayiladuthurai, Tamil Nadu, India
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22
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Coelho CM, de Azevedo CS, Guimarães MADBV, Young RJ. Environmental Enrichment Effect on Fecal Glucocorticoid Metabolites and Captive Maned Wolf (Chrysocyon brachyurus) Behavior. J APPL ANIM WELF SCI 2016; 19:353-62. [PMID: 27057585 DOI: 10.1080/10888705.2016.1161512] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Environmental enrichment is a technique that may reduce the stress of nonhuman animals in captivity. Stress may interfere with normal behavioral expression and affect cognitive decision making. Noninvasive hormonal studies can provide important information about the stress statuses of animals. This study evaluated the effectiveness of different environmental enrichment treatments in the diminution of fecal glucocorticoid metabolites (stress indicators) of three captive maned wolves (Chrysocyon brachyurus). Correlations of the fecal glucocorticoid metabolite levels with expressed behaviors were also determined. Results showed that environmental enrichment reduced fecal glucocorticoid metabolite levels. Furthermore, interspecific and foraging enrichment items were most effective in reducing stress in two of the three wolves. No definite pattern was found between behavioral and physiological responses to stress. In conclusion, these behavioral and physiological data showed that maned wolves responded positively from an animal well being perspective to the enrichment items presented.
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Affiliation(s)
| | | | | | - Robert John Young
- d School of Environment and Life Sciences, University of Salford Manchester , Salford , United Kingdom
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23
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Cless IT, Voss-Hoynes HA, Ritzmann RE, Lukas KE. Defining pacing quantitatively: A comparison of gait characteristics between pacing and non-repetitive locomotion in zoo-housed polar bears. Appl Anim Behav Sci 2015. [DOI: 10.1016/j.applanim.2015.04.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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24
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Piñeiro A, Barja I, Otero GP, Silván G, Illera JC. No Effects of Habitat, Prey Abundance and Competitor Carnivore Abundance on Fecal Cortisol Metabolite Levels in Wildcats (Felis silvestris). ANN ZOOL FENN 2015. [DOI: 10.5735/086.052.0208] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Gray AE, Wirdateti, Nekaris KAI. Trialling exudate-based enrichment efforts to improve the welfare of rescued slow lorises Nycticebus spp. ENDANGER SPECIES RES 2015. [DOI: 10.3354/esr00654] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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26
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Chosy J, Wilson M, Santymire R. Behavioral and physiological responses in felids to exhibit construction. Zoo Biol 2014; 33:267-74. [PMID: 25042703 DOI: 10.1002/zoo.21142] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Revised: 05/09/2014] [Accepted: 05/15/2014] [Indexed: 11/09/2022]
Abstract
Despite the growing body of literature examining the welfare of zoo-housed animals, little standardized work has been published on the effect of construction and environmental disruption on the physiology and behavior of affected animals. When Lincoln Park Zoo (Chicago, IL), embarked on a renovation project for its Kovler Lion House, the opportunity was taken to perform a scientific study of behavioral and physiological markers in the resident felids to determine the effect of construction and environmental disruption. Fecal samples and behavioral observations were collected on four felid species (five individuals) before, during, and after the period of construction. As a group, the average z-score for fecal glucocorticoid metabolite concentration increased during construction relative to baseline. Levels remained elevated after construction, but trended toward baseline. All individuals demonstrated a significant decrease in the frequency of pacing and time spent visible during construction. Overall activity levels also showed a significant decrease relative to baseline measures. As zoological institutions continue to recognize the importance of habitat design, construction and renovation become inevitable. It is important to be aware of the potential consequences this can have on animals in the vicinity and to work toward minimizing negative effects. One recommendation is the availability of ample retreat and hiding space for felids during disruption to their environment.
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Affiliation(s)
- Julia Chosy
- Conservation and Science Department, Lincoln Park Zoo, Chicago, Illinois
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27
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Navarro-Castilla Á, Barja I. Does predation risk, through moon phase and predator cues, modulate food intake, antipredatory and physiological responses in wood mice (Apodemus sylvaticus)? Behav Ecol Sociobiol 2014. [DOI: 10.1007/s00265-014-1759-y] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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28
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Deng H, Jin X, Hu D, Liu D. Fecal cortisol content of wild giant pandas (Ailuropoda melanoleuca) to monitor human disturbance level in natural habitats. ANIM BIOL 2014. [DOI: 10.1163/15707563-00002432] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Wild animals are affected by growing human interference in their habitats and inevitably react internally to such stimuli. This study explores inherent physiological parameters to assess the effect of human interference on giant pandas in their wild habitat. Ninety-one fecal samples were collected within four nature reserves on Qinling Mountain. Fecal cortisol determinations were performed by radioimmunoassay. We categorized the intensity of local human disturbance and tested for correlations between the intensity of human disturbance and fecal cortisol metabolite levels. The results show a significant positive correlation between giant panda fecal cortisol metabolite levels and the degree of disturbance in their habitat. This study is the first to use a non-invasive monitoring method to analyze wild giant panda habitat disturbance, and demonstrates that cortisol metabolite levels in panda dung can objectively reflect the degree of panda habitat disturbance. The results provide a relatively objective means and method with which to evaluate the quality of wild giant panda habitat. This study highlights the need to monitor the effects of human disturbance on wildlife and to implement new policies in the management of nature reserves.
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Affiliation(s)
- Huaiqing Deng
- School of Life Sciences, Guizhou Normal University, Guizhou 550001, China
- College of Nature Conservation, Beijing Forestry University, Laboratory of Non-invasive Technology for Endangered Species, Beijing 100083, China
| | - Xuelin Jin
- Shaanxi Rare Wildlife Rescuing and Breeding Research Center, Shaanxi 710402, China
| | - Defu Hu
- College of Nature Conservation, Beijing Forestry University, Laboratory of Non-invasive Technology for Endangered Species, Beijing 100083, China
| | - Dingzhen Liu
- MOE, Key Laboratory of Biological Diversity and Ecological Engineering, Institute of Ecology, Beijing Normal University, Beijing 100875, China
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29
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Navarro-Castilla Á, Barja I. Antipredatory Response and Food Intake in Wood Mice (Apodemus sylvaticus) under Simulated Predation Risk by Resident and Novel Carnivorous Predators. Ethology 2013. [DOI: 10.1111/eth.12184] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Álvaro Navarro-Castilla
- Unidad de Zoología; Departamento de Biología; Facultad de Ciencias; Universidad Autónoma de Madrid; Madrid Spain
| | - Isabel Barja
- Unidad de Zoología; Departamento de Biología; Facultad de Ciencias; Universidad Autónoma de Madrid; Madrid Spain
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30
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Keen HA, Nelson OL, Robbins CT, Evans M, Shepherdson DJ, Newberry RC. Validation of a novel cognitive bias task based on difference in quantity of reinforcement for assessing environmental enrichment. Anim Cogn 2013; 17:529-41. [PMID: 24045850 DOI: 10.1007/s10071-013-0684-1] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Revised: 09/06/2013] [Accepted: 09/10/2013] [Indexed: 11/27/2022]
Abstract
Cognitive bias tasks purport to assess affective states via responses to ambiguous stimuli. We hypothesized that a novel cognitive bias task based on positive reinforcement using quantity differences would detect changes in affect in captive grizzly bears (Ursus arctos horribilis). We trained bears (n = 8) to respond differently (nose or paw touch) to two stimuli (light or dark gray cue cards), with responses counterbalanced across bears. The two cues signaled a small or large food reward, respectively. Responses to ambiguous probe stimuli (i.e., shades of gray) intermediate to the trained stimuli were classified as either 'optimistic,' appropriate for the larger reward, or 'pessimistic,' appropriate for the smaller reward. In Experiment 1, we explored the contrast in reward size necessary to detect a change in response across probe stimuli (large reward, 3 or 6 apple slices: small reward, 1 slice). We observed a change in response across probe stimuli, with no difference in response between reward-value groups, indicating that a contrast of 3:1 apple slices was sufficient to affect responses. In Experiment 2, we investigated cognitive bias after 2.1 h of exposure to enrichment items varying in attractiveness. Results were unaffected by enrichment type or time spent interacting with enrichments, indicating that the task failed to demonstrate criterion validity for comparing mood following exposure to different enrichment items. However, greater time spent pacing prior to testing was associated with 'optimistic' judgments. The data provide some support for use of cognitive bias tasks based on quantity differences in animal welfare assessments involving captive wildlife.
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Affiliation(s)
- Heidi A Keen
- Center for the Study of Animal Well-being, Washington State University, Pullman, WA, USA
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31
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Factors influencing the prevalence of stereotypical behaviour in captive cheetahs (Acinonyx jubatus). Appl Anim Behav Sci 2012. [DOI: 10.1016/j.applanim.2012.09.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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32
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Morabito P, Bashaw MJ. A Survey of Abnormal Repetitive Behaviors in North American River Otters Housed in Zoos. J APPL ANIM WELF SCI 2012; 15:208-21. [DOI: 10.1080/10888705.2012.658334] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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33
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Snyder RJ, Perdue BM, Powell DM, Forthman DL, Bloomsmith MA, Maple TL. Behavioral and hormonal consequences of transporting giant pandas from China to the United States. J APPL ANIM WELF SCI 2012; 15:1-20. [PMID: 22233212 DOI: 10.1080/10888705.2012.624046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Zoological institutions strive to ensure the welfare of nonhuman animals in captivity. Part of this effort involves reducing the level of distress experienced by an animal to the greatest extent possible. However, some necessary zoo management practices such as transportation induce stress responses. An extensive literature exists concerning the animal welfare implications of road transportation for farm and laboratory animals. There has, however, been little focus on the effects of air transportation on wild animals in captivity. Because many endangered species are transported by air for breeding purposes, it is especially important to study the effects of stress on these species. This study investigated the behavioral and hormonal consequences of transporting 4 giant pandas (2 male-female pairs) by air from China to the United States. An autoregressive test revealed that urinary cortisol measures were highest for 2 subjects, Lun Lun and Tian Tian, during the flight than during the remainder of the 30-day period posttransport (p < .01). No long-term behavioral changes or problems emerged as a result of the transport. The study found that more research is needed to develop a complete understanding of transportation stress and welfare in captive wildlife.
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Conforti VA, Morato RG, Augusto AM, de Oliveira e Sousa L, de Avila DM, Brown JL, Reeves JJ. Noninvasive monitoring of adrenocortical function in captive jaguars (Panthera onca). Zoo Biol 2011; 31:426-41. [PMID: 21953790 DOI: 10.1002/zoo.20409] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2010] [Revised: 05/27/2011] [Accepted: 06/03/2011] [Indexed: 11/06/2022]
Abstract
Jaguars are threatened with extinction throughout their range. A sustainable captive population can serve as a hedge against extinction, but only if they are healthy and reproduce. Understanding how jaguars respond to stressors may help improve the captive environment and enhance their wellbeing. Thus, our objectives were to: (1) conduct an adrenocorticotrophic hormone (ACTH) challenge to validate a cortisol radioimmunoassay (RIA) for noninvasive monitoring of adrenocortical function in jaguars; (2) investigate the relationship between fecal corticoid (FCM) and androgen metabolite (FAM) concentrations in males during the ACTH challenge; and (3) establish a range of physiological concentrations of FCMs for the proposed protocol. Seven jaguars (3 M, 4 F) received 500 IU/animal of ACTH. Pre- and post-ACTH fecal samples were assayed for corticoid (M and F) and androgen metabolites (M) by RIA. Concentrations of FCMs increased (P80.01) after ACTH injection (pre-ACTH: 0.90 ± 0.12 µg/g dry feces; post-ACTH: 2.55 ± 0.25 µg/g). Considering pre- and post-ACTH samples, FCM concentrations were higher (P80.01) in males (2.15 ± 0.20 µg/g) than in females (1.30 ± 0.20 µg/g), but the magnitude of the response to ACTH was comparable (P>0.05) between genders. After ACTH injection, FAMs increased in two (of 3) males; in one male, FCMs and FAMs were positively correlated (0.60; P80.01). Excretion of FCMs was assessed in 16 jaguars (7 M, 9 F) and found to be highly variable (range, 80.11-1.56 µg/g). In conclusion, this study presents a cortisol RIA for monitoring adrenocortical function in jaguars noninvasively.
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Affiliation(s)
- Valéria A Conforti
- Department of Animal Sciences, Washington State University, Pullman, Washington, USA.
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Kersey DC, Wildt DE, Brown JL, Snyder RJ, Huang Y, Monfort SL. Rising fecal glucocorticoid concentrations track reproductive activity in the female giant panda (Ailuropoda melanoleuca). Gen Comp Endocrinol 2011; 173:364-70. [PMID: 21726558 DOI: 10.1016/j.ygcen.2011.06.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Revised: 06/04/2011] [Accepted: 06/17/2011] [Indexed: 12/31/2022]
Abstract
To better understand the adaptive significance of adrenal glucocorticoid (GC) variation in the giant panda, we assessed patterns of fecal GC excretion over time as well as during estrus, parturient and non-parturient luteal phases, lactation and acyclicity in 17 adult females. Fecal estrogen and GC patterns were positively correlated (P<0.05) in four of five periestrual females (r = 0.57-0.92). Among all reproductive states, fecal GC was highest (P<0.05) during periestrus (non-parturient, 495.9 ± 100.7 ng/g [mean ± SE]; parturient, 654.1 ± 10 6.5 ng/g; P>0.05). Concentrations of GC metabolites were lower (P<0.05) during the later stage of the luteal phase in non-parturient (334.8 ± 24.8 ng/g) compared to parturient (470.4 ± 54.0 ng/g) females. Although fecal GC concentrations in cyclic, non-parturient females did not differ (P>0.05) across all seasons, there were seasonal variations (P<0.05) in females that were acyclic and non-lactational. However, the overall lack of difference (P>0.05) in GC values between reproductively cyclic and acyclic females did not support the hypothesis that ovarian acyclicity is due to increased adrenal activity (related or unrelated to physiological stress). Furthermore, GCs may play an important role in the normal endocrine milieu associated with sexual receptivity and late pregnancy. These data demonstrate that both reproductive status and seasonal factors are important modulators of adrenal function in this endangered species.
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Affiliation(s)
- David C Kersey
- Smithsonian Conservation Biology Institute, Front Royal, VA 22630, USA.
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Loeding E, Thomas J, Bernier D, Santymire R. Using Fecal Hormonal and Behavioral Analyses to Evaluate the Introduction of Two Sable Antelope at Lincoln Park Zoo. J APPL ANIM WELF SCI 2011; 14:220-46. [DOI: 10.1080/10888705.2011.576968] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Influence of husbandry systems on physiological stress reactions of captive brown brocket (Mazama gouazoubira) and marsh deer (Blastocerus dichotomus)—noninvasive analysis of fecal cortisol metabolites. EUR J WILDLIFE RES 2009. [DOI: 10.1007/s10344-009-0350-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Environmental enrichment for maned wolves (Chrysocyon brachyurus): group and individual effects. Anim Welf 2009. [DOI: 10.1017/s0962728600000543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
AbstractProcedures that increase foraging and exploratory behaviours are generally accepted as effective at improving welfare and reducing stereotypies in captive animals. To determine the effect of food and toy enrichment on the behaviour and hormonal levels of maned wolves (Chrysocyon brachyurus), 11 wolves were submitted to a baseline-enrichment-baseline schedule with four enrichment conditions: food scattering, toy presentation, edible toy presentation, and a combination of food and toy conditions. Behaviour and glucocorticoid metabolite concentrations (GCM) were assessed throughout the experiment. Our hypotheses were that enrichment procedures would lead to an increase in activity in the short and long term, a decrease in pacing, and a reduction in GCM concentrations. We also hypothesised that the concentrations of GCM would show a correlation with behaviour. Enrichment conditions increased immediate locomotion but did not produce long-term changes of activity nor reduced pacing. The procedures had a clear effect on individual behaviour and induced, under food enrichment conditions, an increased interest in food. Enrichment did not lead to decreased GCM concentration in the group as a whole, but there was a tendency for male and female animals to differ in hormonal reactions to environmental change. A positive correlation between GCM concentrations and pacing behaviour and a negative correlation between GCM concentrations and social behaviour were found. Results suggest that food scattering as an enrichment procedure may be used with maned wolves to enhance welfare, whilst also revealing the importance of taking individual and gender differences into account when planning enrichment techniques.
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