...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Microbiology >Temporal Dynamics of the Cecal Gut Microbiota of Juvenile Arctic Ground Squirrels: a Strong Litter Effect across the First Active Season
【24h】

Temporal Dynamics of the Cecal Gut Microbiota of Juvenile Arctic Ground Squirrels: a Strong Litter Effect across the First Active Season

机译：幼年北极地松鼠盲肠肠道菌群的时间动态：在第一个活动季节强烈的垃圾影响。

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Arctic ground squirrels ( Urocitellus parryii ) are active for a scant 3 to 5 months of the year. During the active season, adult squirrels compete for mates, reproduce, and fatten in preparation for hibernation, while juvenile squirrels, weaned in early July, must grow and acquire sufficient fat to survive their first hibernation season. During hibernation, the gut microbial community is altered in diversity, abundance, and activity. To date, no studies have examined the gut microbiota of hibernators across the truncated active season. We characterized trends in diversity (454 pyrosequencing), density (flow cytometry), viability (flow cytometry), and metabolism (short-chain fatty acid analysis) of the gut microbial community of juvenile arctic ground squirrels across their first active season at weaning and at 4, 6, 8, and 10 weeks postweaning. At 8 weeks postweaning, the mean bacterial density was significantly higher than that at weaning, and the mean percentage of live bacteria was significantly higher than that at either weaning or 4 weeks postweaning. No significant differences in microbial diversity, total short-chain fatty acid concentrations, or molar proportions of individual short-chain fatty acids were observed among sample periods. The level of variability in gut microbial diversity among squirrels was high across the active season but was most similar among littermates, except at weaning, indicating strong maternal or genetic influences across development. Our results indicate that genetic or maternal influences exert profound effects on the gut microbial community of juvenile arctic ground squirrels. We did not find a correlation between host adiposity and gut microbial diversity during prehibernation fattening, likely due to a high level of variability among squirrels.
机译：北极地松鼠（Urocitellus parryii）一年中只有3-5个月的时间活跃。在活跃的季节中，成年松鼠争夺伴侣，繁殖并增添脂肪以准备冬眠，而在7月初断奶的幼小松鼠必须生长并获取足够的脂肪以度过他们的第一个冬眠季节。在冬眠期间，肠道微生物群落的多样性，丰富度和活动性都发生了变化。迄今为止，还没有研究检查过整个活动期冬眠者的肠道菌群。我们表征了幼仔北极地松鼠肠道微生物群落在断奶和繁殖的第一个活动季节的多样性（454焦磷酸测序），密度（流式细胞仪），生存力（流式细胞仪）和新陈代谢（短链脂肪酸分析）的趋势。断奶后第4、6、8和10周。断奶后8周，平均细菌密度显着高于断奶时，平均活菌百分比显着高于断奶或断奶后4周。在采样期间，未观察到微生物多样性，总短链脂肪酸浓度或单个短链脂肪酸的摩尔比例的显着差异。在整个活动季节中，松鼠之间的肠道微生物多样性变异水平很高，但在同窝幼仔中最相似，除了断奶时，这表明整个发育过程中母体或遗传影响很大。我们的结果表明，遗传或母亲的影响对少年北极地松鼠的肠道微生物群落产生深远的影响。我们没有发现冬眠育肥期间宿主肥胖与肠道微生物多样性之间的相关性，这可能是由于松鼠之间的高度可变性所致。

著录项

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