• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Effects of Supplemental Feeding on Stress Physiology and Nesting Success of Eastern Bluebirds, Sialia sialis
【24h】

Effects of Supplemental Feeding on Stress Physiology and Nesting Success of Eastern Bluebirds, Sialia sialis

机译：补充喂养对东方蓝鸟应激生理和筑巢成功的影响

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A common anthropogenic influence on wildlife is the use of supplemental bird feeders. Dependent on abundance and natural food availability, this supplemental food source could influence individual survival and productivity. In this study, supplemental food availability was experimentally manipulated in a wild population of Eastern Bluebirds, Sialia sialis. This was done to examine the influence of the common pastime of bird feeding on physiology and reproductive success of bluebirds, especially when supplemental feeding is inconsistent. Adult and nestling bluebirds were assigned to one of three groups. In the first group, birds received mealworms ( Tenebrionidae larvae) throughout the breeding attempt. In the second group, birds received mealworms from nest completion until nestlings hatched. Birds in the third group received no supplementation but were disturbed at the same frequency as birds in the other two groups. Nestling growth and reproductive success were calculated to examine differences resulting from my experimental manipulation. I also collected blood samples from adults and nestlings to quantify differences in bacterial killing ability, circulating corticosterone levels, and heterophil to lymphocyte ratios between the experimental groups. Finally to determine if differences in habitat quality contributed to the effect of food supplementation on bluebird physiology and nest success, data on invertebrate abundance were collected on a subset of territories. I found bacterial killing ability, baseline corticosterone and heterophil to lymphocyte ratios of adults and nestlings were not significantly different across the experimental groups. Nestling mass, tarsus, and wing chord length were unaffected by experimental treatment. Invertebrate abundance and richness were similar between years as well as across nest box trails. Invertebrate abundance and richness were not correlated with any of the nesting success metrics and did not statistically influence nesting success. Experimental manipulation of supplemental feeding did not appear to influence physiology or nesting success of Eastern Bluebirds. With regard to immune function, it is possible female condition prior to egg laying has a greater influence on nestlings than changes in food availability post-laying and later. Supplemental food availability may only have significant effects on physiology metrics and nest success in years with low environmental food availability.
机译：对野生动植物的常见人为影响是使用补充鸟类喂食器。取决于丰富和天然食物的可获得性，这种补充食物来源可能会影响个体的生存和生产力。在这项研究中，实验性地在东方蓝鸟（Sialia sialis）的野生种群中操纵了补充食物的可获得性。这样做是为了检查普通鸟类消遣对蓝鸟的生理和繁殖成功的影响，特别是在补充喂养不一致的情况下。成年和雏鸟被分为三组之一。在第一组中，在整个繁殖尝试中，鸟类都接受了粉虫（Tenebrionidae幼虫）。在第二组中，鸟类从筑巢完成直到雏鸟孵化都接受了粉虫。第三组的鸟没有补充营养，但受到干扰的频率与其他两组的鸟相同。计算出雏鸟的生长和生殖成功，以检查我的实验操作产生的差异。我还从成年和刚孵出的雏鸟身上采集了血液样本，以量化实验组之间细菌杀灭能力，循环皮质酮水平以及嗜异性淋巴细胞比的差异。最后，为了确定栖息地质量的差异是否对食物补充对蓝鸟生理和巢成功的影响做出了贡献，在一部分领土上收集了无脊椎动物数量的数据。我发现实验组之间的细菌杀伤能力，成年和雏鸟的基线皮质酮和异嗜性淋巴细胞比率没有显着差异。雏巢质量，骨和翼弦长度不受实验处理的影响。年间以及巢箱间的无脊椎动物丰度和丰富度相似。无脊椎动物的丰富度和丰富度与任何筑巢成功指标均不相关，也没有统计学上影响筑巢成功。补充喂养的实验操作似乎并未影响东方蓝鸟的生理或筑巢成功。关于免疫功能，产蛋前的雌性状况可能比产后及以后的食物供应量变化对雏鸟有更大的影响。在环境食品供应量较低的情况下，补充食品的供应量可能仅对生理指标产生重大影响，并成功地筑巢成功。

著录项

  • 作者

    Perryman, Danielle Clarís.;

  • 作者单位

    Oklahoma State University.;

  • 授予单位 Oklahoma State University.;
  • 学科 Zoology.
  • 学位 M.S.
  • 年度 2017
  • 页码 79 p.
  • 总页数 79
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号