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首页> 外文期刊>Oryx >Effects of live-shearing on population parameters and movement in sedentary and migratory populations of guanacos Lama guanicoe
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Effects of live-shearing on population parameters and movement in sedentary and migratory populations of guanacos Lama guanicoe

机译：生活剪力对骆驼科定居和迁徙种群的参数和运动的影响

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摘要

Live-shearing of wild guanacos Lama guanicoe may affect their reproductive success and population resilience, and therefore it is important to assess the biological sustainability of obtaining their wool. We evaluated effects of capture and shearing on survival and reproduction, population parameters, daily movements, ranging behaviour and spatial distribution in sedentary and migratory populations. We assessed population variables by radio-telemetry and line-transect surveys before and after capture. We estimated high post-shearing survival rates in both populations and similar yearling production in shorn and non-shorn females in the migratory population. We did not find significant variations in density and population structure before and after shearing in the sedentary population, whereas in the migratory population density decreased and the population structure changed significantly after assembly of the capture structure, returning to pre-assembly levels 1 month later. The mean daily distance moved by radio-collared guanacos during the first 2 days after shearing was three times longer than during the following 30 days. There was a 25% decrease in the mean home-range size of shorn guanacos between the first and second month after shearing but this decline appeared to be associated with a seasonal change in movement, because a similar reduction occurred during the same period the following year, when the guanacos were not shorn. Live-shearing modified the spatial distribution pattern in the sedentary population but did not have a significant effect on the migratory population. Management of guanacos may contribute towards developing a biologically sustainable economic activity that promotes conservation of wildlife and habitats.
机译：野生骆驼科的生活剪裁可能会影响它们的繁殖成功和种群适应力，因此评估获得其羊毛的生物学可持续性很重要。我们评估了捕获和剪切对久坐和迁徙人口的生存和繁殖，种群参数，日常运动，测距行为和空间分布的影响。在捕获之前和之后，我们通过无线电遥测和线横断面调查评估了种群变量。我们估计了迁移人群中剪毛后和非剪毛雌性的剪后存活率较高，并且一岁鸡的生产量相似。在久坐的人群中，在剪毛前后，密度和种群结构没有发现显着变化，而在捕获结构组装后，迁徙人口密度下降，种群结构发生了显着变化，在1个月后恢复到组装前的水平。剪毛后头2天内，放射性领鬣蜥移动的平均每日距离是其后30天内的三倍。在剪毛后的第一个月和第二个月之间，刺鬣蜥的平均范围缩小了25％，但这种下降似乎与运动的季节性变化有关，因为在第二年的同一时期发生了类似的下降，当骆驼没有剪毛。实时剪切改变了久坐人口的空间分布格局，但对迁徙人口没有显着影响。骆驼的管理可能有助于开展生物上可持续的经济活动，从而促进野生动植物和栖息地的保护。

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  • 来源
    《Oryx》 |2015年第1期|51-59|共9页
  • 作者

    Carmanchahi Pablo D.; Schroeder Natalia M.; Bolgeri Maria Jose; Walker R. Susan; Funes Martin; Berg Jodi; Taraborelli Paula; Ovejero Ramiro; Gregorio Pablo; Moreno Palo; Novaro Andres J.;

  • 作者单位

    UNCo AUSMA, INIBIOMA CONICET, Grp Invest Ecofisiol Fauna Silvest, RA-8370 Neuquen, Argentina;

    Consejo Nacl Invest Cient & Tecn, Grp Invest Ecofisiol Fauna Silvest, RA-1033 Buenos Aires, DF, Argentina|Consejo Nacl Invest Cient & Tecn, CCT Mendoza, IADIZA, Lab Desertificac & Ordenamiento Territor, RA-1033 Buenos Aires, DF, Argentina;

    Wildlife Conservat Soc, Programa Estepa Patagon & Andina, RA-8370 Neuquen, Argentina|INIBIOMA CONICET UNComa, Neuquen, Argentina;

    Wildlife Conservat Soc, Programa Estepa Patagon & Andina, RA-8370 Neuquen, Argentina;

    Wildlife Conservat Soc, Programa Estepa Patagon & Andina, RA-8370 Neuquen, Argentina;

    Wildlife Conservat Soc, Programa Estepa Patagon & Andina, RA-8370 Neuquen, Argentina;

    Consejo Nacl Invest Cient & Tecn, Grp Invest Ecofisiol Fauna Silvest, RA-1033 Buenos Aires, DF, Argentina|Consejo Nacl Invest Cient & Tecn, CCT Mendoza, IADIZA, Lab Desertificac & Ordenamiento Territor, RA-1033 Buenos Aires, DF, Argentina;

    Consejo Nacl Invest Cient & Tecn, Grp Invest Ecofisiol Fauna Silvest, RA-1033 Buenos Aires, DF, Argentina|Consejo Nacl Invest Cient & Tecn, CCT Mendoza, IADIZA, GIB, RA-1033 Buenos Aires, DF, Argentina;

    UNCo AUSMA, INIBIOMA CONICET, Grp Invest Ecofisiol Fauna Silvest, RA-8370 Neuquen, Argentina|UNL, Grp Invest Ecofisiol Fauna Silvest, Santa Fe, Argentina|UNL, Fac Cs Vet, Lab Ecol Enfermedades, Santa Fe, Argentina;

    Wildlife Conservat Soc, Programa Estepa Patagon & Andina, RA-8370 Neuquen, Argentina|INIBIOMA CONICET UNComa, Neuquen, Argentina;

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  • 正文语种 eng
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  • 关键词

    Arid ecosystem; biodiversity conservation; Lama guanicoe; population parameters; sustainable use; wild guanacos; wildlife management;

    机译：干旱生态系统;生物多样性保护;美洲驼鸟;种群参数;可持续利用;野生骆驼;野生动物管理;

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