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首页> 外文学位 >The effects of dental impairment on the biology and behavioral ecology of wild ring-tailed lemurs (Lemur catta) at the Beza Mahafaly Special Reserve, Madagascar.
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The effects of dental impairment on the biology and behavioral ecology of wild ring-tailed lemurs (Lemur catta) at the Beza Mahafaly Special Reserve, Madagascar.

机译：马达加斯加Beza Mahafaly特别保护区的牙齿损伤对野生环尾狐猴（Lemur catta）的生物学和行为生态的影响。

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摘要

Ring-tailed lemurs (Lemur catta) of the Beza Mahafaly Special Reserve (BMSR) demonstrate exceptionally high rates of dental wear and subsequent tooth loss due to tamarind fruit consumption. How such wear and loss affects their behavior, nutrition and health is not yet fully understood. This study examines how dental impairment impacts ring-tailed lemur biology and behavioral ecology through a broad dental-ecological framework involving use of topographic analyses of tooth form, food processing data collection, and fecal measures of nutritional status. This study also presents visual measures of coat and body condition applicable to dental studies. Increasing topographically-measured dental impairment was associated with longer tamarind fruit feeding times and increased use of alternative tamarind fruit processing techniques (e.g., use of open fruit, manual processing and toothrow use). Increasing impairment was also associated with longer bouts for variety of other food types and species, although several foods were associated with shorter bouts, suggesting that food mechanical properties play a role in the expression of behaviors relative to dental impairment. Individuals with tooth loss and wear demonstrate larger particles within their fecal material, suggesting they possess a reduced capacity to digest and absorb ingested foods. This hypothesis was supported by fecal-nutritional analyses indicating that impairment often reduces individual capacity to ferment structural carbohydrates and/or results in seasonally increased residual fecal protein. Dental impairment was also associated with higher fecal ash content, suggesting that tooth wear at this site may also be a function of dietary silicates in addition to that caused by tamarind fruit feeding. Measures of coat and body condition indicate that lemurs show increased coat quality following the onset of the wet season when resource availability increases, and that body size appears to be related to reproductive status. As these are measures that appear to be linked to energetic status, their use may also be beneficial in future studies of dental impairment. Overall, data from this study indicate that dental impairment has real, significant and typically negative impacts on BMSR ring-tailed lemurs in terms of their feeding behaviors, ability to process foods and their capacity to utilize ingested resources.
机译：Beza Mahafaly特别储备金（BMSR）的环尾狐猴（Lemur catta）表现出极高的牙齿磨损率，其后由于食用罗望子类水果而导致牙齿脱落。这种磨损和损失如何影响其行为，营养和健康尚不完全清楚。这项研究通过广泛的牙齿​​生态学框架，研究了牙齿受损对环尾狐猴生物学和行为生态学的影响，涉及使用牙齿形态的地形学分析，食品加工数据收集以及粪便中的营养状况。这项研究还提出了适用于牙科研究的外套和身体状况的视觉测量方法。地形测量得出的牙齿损害增加与罗望子果实的进食时间延长和替代罗望子果实加工技术的使用增加（例如，使用开放式水果，手动加工和使用牙列）有关。损害的增加也与其他食物类型和种类的较长发作有关，尽管几种食物与较短发作有关，这表明相对于牙齿损害，食物机械特性在行为表现中起作用。牙齿脱落和磨损的人的粪便中有较大的颗粒，表明他们消化和吸收摄入食物的能力降低。粪便营养分析支持了这一假设，表明损伤通常会降低个体发酵结构性碳水化合物的能力和/或导致粪便残留蛋白质季节性增加。牙齿损伤还与粪便灰分含量较高有关，表明该部位的牙齿磨损可能也是除罗望子类水果摄食所致饮食中硅酸盐的作用。外套和身体状况的测量结果表明，在资源供应增加的情况下，狐猴在雨季开始后表现出外套质量的提高，并且体型似乎与生殖状态有关。由于这些措施似乎与精力充沛的状态有关，因此它们的使用在将来的牙齿损伤研究中也可能是有益的。总体而言，这项研究的数据表明，就其进食行为，加工食品的能力及其利用摄入资源的能力而言，牙齿损伤对BMSR环尾狐猴具有真实，显着且通常为负面影响。

著录项

  • 作者

    Millette, James Burns.;

  • 作者单位

    University of Colorado at Boulder.;

  • 授予单位 University of Colorado at Boulder.;
  • 学科 Physical anthropology.;Zoology.;Biology.
  • 学位 Ph.D.
  • 年度 2016
  • 页码 395 p.
  • 总页数 395
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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