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| 1 | 镜面环境下吐鲁番沙虎行为谱及PAE编码系统显示文摘基于“姿势-动作-环境(PAE)”编码系统对吐鲁番沙虎Teratoscincus roborowskii记录并构建其在独立个体环境、镜像环境及同类个体存在3种情境下的行为谱和PAE编码系统。在3种情境下共描述了吐鲁番沙虎7种姿势、50种动作、8种环境和29种行为,按照功能分为运动行为、警戒行为、冲突行为、展示行为和杂类行为5大类。研究结果显示,吐鲁番沙虎在面对镜子和同类时具有类似的反应,即引起相同的警戒行为,如翘尾、拱腰、抖尾、压头俯身和压头拱尾接近等,但对镜像的反应更强烈(频繁在镜前徘徊、长时间盯着镜子等)。实验结果中的行为谱及PAE编码系统为下一步的镜面测试实验奠定了基础,并有助于了解吐鲁番沙虎的行为功能。 | 蒙冬柳 高为震 时磊 | 2023 | 四川动物2023，42，6： | 0 |
| 2 | Complex relationships between physiological stress and endoparasite infections in natural populations显示文摘Short-term elevation of glucocorticoids(GCs)is one of the major physiological mechanisms by which vertebrates cope with challenging environmental or social factors(stressors).However,when exposure to stressors occurs repeatedly or over a prolonged period of time,animals may experience chronic elevation of GCs,which reduces the immune response efficiency and can lead to higher intensity of parasitic infection.Here,we used invasive gray squirrels Sciurus carolinensis in troduced in Norther n Italy and their 2 most prevale nt gastrointesti nal parasites,the n ematode Strongyloides robustus and coccidia of the genus Eimeria,as a model to investigate relati on ships among macroparasite infection and concentrations of fecal glucocorticoid metabolites(FGMs),an integrated measure of circulating GCs.Our results revealed an association of FGMs with infection by St.robustus,but not with coccidia.Individuals with higher FGMs appear to be responsible for the greatest St.robustus egg shedding within gray squirrel populations,thus possibly acting as superspreaders.However,FGMs were negatively associated with adult St.robustus,suggesting that the abundance of adults of this nematode species does not induce elevation in FGMs,but is only affected by it through immun e-mediated effects on its fecun dity.Fin ally,the relati on ship betwee n St.robustus(both eggs and adult parasites)and FGMs was not linear,suggesting that only high levels of physiological stress in fluence parasite inf ection.Our fin dings highlight that the direction and magnitude of the stress-infection relationship may depend not only on the specific hostparasite system,but also on the different life stages of the same parasite. | Claudia Romeo Lucas A.WAUTERS Francesca Santicchia Ben DANTZER Rupert Palme Adriano Martinoli Nicola Ferrari | 2020 | Current Zoology2020，66，5： | 0 |
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