Human activities involving noise emission can affect wild animals.European mink was exposed to road noise and human voice playbacks to analyze how sound intensity level and duration of both noises altered the time tha...Human activities involving noise emission can affect wild animals.European mink was exposed to road noise and human voice playbacks to analyze how sound intensity level and duration of both noises altered the time that individuals were active and if their fecal cortisol metabolite(FCM)levels varied.A Hierarchical Analysis Cluster was performed to establish 2 mink groups with respect to both noise source type:short duration/low intensity(SL)and long duration/high intensity(LH).We performed general linear mixed models to evaluate the variation in locomotor activity duration(s)and FCM(nanogram per gram)levels,respectively.The results showed both road noise and human voices decreased locomotor activity duration in SL more sharply compared with LH,and human voices were the triggers that induced the most pronounced response to both exposure conditions.FCM(ng/g)levels increased in SL compared with LH during road noise while the opposite happened during human voices.Differences based on sex and age of individuals were observed.In conclusion,noise characteristics given by the sound type determined the variations in locomotor activity duration while noise exposure level determined the variations in FCM(ng/g)levels.Attention should be paid to noisy activities(e.g.,recreational activities for visitors in protected natural areas)and loud groups of people to conserve wildlife,especially noise sensitive species.展开更多
基于非损伤取样和放射免疫法(RIA),于2018年9月1日—10月15日期间对四川马尔康林麝繁育场的36头雄性圈养林麝(Moschus berezovskii)的粪样类固醇激素水平进行了检测,结合麝香分泌数据采集,探究了林麝的粪样睾酮和皮质醇水平与其麝香分...基于非损伤取样和放射免疫法(RIA),于2018年9月1日—10月15日期间对四川马尔康林麝繁育场的36头雄性圈养林麝(Moschus berezovskii)的粪样类固醇激素水平进行了检测,结合麝香分泌数据采集,探究了林麝的粪样睾酮和皮质醇水平与其麝香分泌的关系,结果表明:四川马尔康圈养林麝的麝香分泌(12.53±0.76) g (n=36)与粪样睾酮水平(106.03±12.34) ng/g (n=36)呈显著正相关(r=0.436,P<0.01),泌香较多雄麝(16.50±0.61) g (n=17)的睾酮水平(141.51±21.86) ng/g (n=17)显著地高于泌香较少(8.98±0.59) g (n=19)雄麝(74.27±7.93) ng/g (n=19)(t=-3.252,df=34,P<0.01),方程y=0.021x+10.270(R2=0.120,P<0.05)可较好地拟合二者间关系。麝香分泌与皮质醇浓度(47.49±1.53) ng/g (n=36)相关不显著(r=0.078,P>0.05),泌香较多雄麝的皮质醇浓度(48.98±2.28) ng/g (n=17)略高于泌香较少雄麝(46.17±2.14) ng/g (n=19),差异不显著(P>0.05),方程y=0.038x+10.730(R2=0.023,P>0.05)可近似拟合皮质醇与泌香量间的关系。此外,雄麝睾酮水平对泌香量有显著影响(P<0.05),睾酮水平较高林麝泌香量(14.97±1.17) g (n=12)显著高于睾酮水平较低个体的泌香量(11.32±0.90) g (n=24)(F=4.79,P<0.05),而睾酮、皮质醇和年龄对麝香分泌的综合效应及变量间的交互作用均不显著(P>0.05)。研究确定了圈养林麝粪样睾酮和皮质醇水平与麝香分泌量间的关系,可用于麝类驯养实践的麝香产量预测及品系选育。展开更多
基金This research was funded by the authors with help from Fundacion para la Investigacion en Etologıa y Biodiversidad(FIEB),who funded a small portion of the hormonal analyzes.
文摘Human activities involving noise emission can affect wild animals.European mink was exposed to road noise and human voice playbacks to analyze how sound intensity level and duration of both noises altered the time that individuals were active and if their fecal cortisol metabolite(FCM)levels varied.A Hierarchical Analysis Cluster was performed to establish 2 mink groups with respect to both noise source type:short duration/low intensity(SL)and long duration/high intensity(LH).We performed general linear mixed models to evaluate the variation in locomotor activity duration(s)and FCM(nanogram per gram)levels,respectively.The results showed both road noise and human voices decreased locomotor activity duration in SL more sharply compared with LH,and human voices were the triggers that induced the most pronounced response to both exposure conditions.FCM(ng/g)levels increased in SL compared with LH during road noise while the opposite happened during human voices.Differences based on sex and age of individuals were observed.In conclusion,noise characteristics given by the sound type determined the variations in locomotor activity duration while noise exposure level determined the variations in FCM(ng/g)levels.Attention should be paid to noisy activities(e.g.,recreational activities for visitors in protected natural areas)and loud groups of people to conserve wildlife,especially noise sensitive species.
文摘基于非损伤取样和放射免疫法(RIA),于2018年9月1日—10月15日期间对四川马尔康林麝繁育场的36头雄性圈养林麝(Moschus berezovskii)的粪样类固醇激素水平进行了检测,结合麝香分泌数据采集,探究了林麝的粪样睾酮和皮质醇水平与其麝香分泌的关系,结果表明:四川马尔康圈养林麝的麝香分泌(12.53±0.76) g (n=36)与粪样睾酮水平(106.03±12.34) ng/g (n=36)呈显著正相关(r=0.436,P<0.01),泌香较多雄麝(16.50±0.61) g (n=17)的睾酮水平(141.51±21.86) ng/g (n=17)显著地高于泌香较少(8.98±0.59) g (n=19)雄麝(74.27±7.93) ng/g (n=19)(t=-3.252,df=34,P<0.01),方程y=0.021x+10.270(R2=0.120,P<0.05)可较好地拟合二者间关系。麝香分泌与皮质醇浓度(47.49±1.53) ng/g (n=36)相关不显著(r=0.078,P>0.05),泌香较多雄麝的皮质醇浓度(48.98±2.28) ng/g (n=17)略高于泌香较少雄麝(46.17±2.14) ng/g (n=19),差异不显著(P>0.05),方程y=0.038x+10.730(R2=0.023,P>0.05)可近似拟合皮质醇与泌香量间的关系。此外,雄麝睾酮水平对泌香量有显著影响(P<0.05),睾酮水平较高林麝泌香量(14.97±1.17) g (n=12)显著高于睾酮水平较低个体的泌香量(11.32±0.90) g (n=24)(F=4.79,P<0.05),而睾酮、皮质醇和年龄对麝香分泌的综合效应及变量间的交互作用均不显著(P>0.05)。研究确定了圈养林麝粪样睾酮和皮质醇水平与麝香分泌量间的关系,可用于麝类驯养实践的麝香产量预测及品系选育。
