搜索结果: 16-30 共查到“知识库 动物群落学”相关记录213条 . 查询时间(3.222 秒)
Population Dynamics, Chick Diet, and Foraging Behavior of the Razorbill (Alca torda) at Matinicus Rock, Maine
source-sink dynamics diving, temperature-depth recorder
2015/1/4
During the summers of 2007-2009, I studied the population growth and reproductive and foraging ecology of the Razorbill (Alca torda) at Matinicus Rock (MR), Maine. This medium-sized marine bird in the...
The Conservation Value of Residential Landscapes for Native Bird Communities: Patterns, Processes, and Management Implications
giving-up densities Homeowners Associations residential gardens socio-ecology urban biodiversity urban birds
2014/12/18
Urbanization, as it transforms natural biotic systems into human-dominated landscapes, is recognized as one of the greatest threats to biodiversity throughout the world. Furthermore, urban dwellers ar...
Effects of Acarbose Addition on Ruminal Bacterial Microbiota, Lipopolysaccharide Levels and Fermentation Characteristics In vitro
Acarbose Ruminal Microbiota Pyrosequencing In vitro Fermentation
2016/5/17
This study investigated the effects of acarbose addition on changes in ruminal fermentation characteristics and the composition of the ruminal bacterial community in vitro using batch cultures. Rumen ...
Effects of Aspergillus Oryzae Culture and 2-Hydroxy-4-(Methylthio)-Butanoic Acid on In vitro Rumen Fermentation and Microbial Populations between Different Roughage Sources
Chinese Wild Rye Corn Silage In vitro Rumen Fermentation Microbial Population
2016/5/17
An in vitro experiment was conducted to evaluate the effects of Aspergillus oryzae culture (AOC) and 2-hydroxy-4-(methylthio)-butanoic acid (HMB) on rumen fermentation and microbial populations betwee...
Comparison of Faecal Microbial Community of Lantang, Bama, Erhualian, Meishan, Xiaomeishan, Duroc, Landrace, and Yorkshire Sows
Gut Microbiota 16S rRNA Gene Volatile Fatty Acid (VFA) Denaturing Gradient Gel Electrophoresis (DGGE) Real-time PCR
2016/5/16
The objective of this study was to investigate differences in the faecal microbial composition among Lantang, Bama, Erhualian, Meishan, Xiaomeishan, Duroc, Landrace, and Yorkshire sows and to explore ...
Empirical Selection of Informative Microsatellite Markers within Co-ancestry Pig Populations Is Required for Improving the Individual Assignment Efficiency
Microsatellite Markers Pigs Assignment Test
2016/5/16
The Lanyu is a miniature pig breed indigenous to Lanyu Island, Taiwan. It is distantly related to Asian and European pig breeds. It has been inbred to generate two breeds and crossed with Landrace and...
Diversity of Butyrivibrio Group Bacteria in the Rumen of Goats and Its Response to the Supplementation of Garlic Oil
Butyrivibrio 16S rRNA Gene Diversity Garlic Oil Goat Rumen
2016/5/16
This study aimed to investigate the diversity of the Butyrivibrio group bacteria in goat rumen and its response to garlic oil (GO) supplementation as revealed by molecular analysis of cloned 16S rRNA ...
中国怒江片马地区怒江金丝猴种群动态及社会组织初探
怒江金丝猴 社会组织 重层社会 怒江片马
2016/7/19
2011 年10 月至2013 年10 月在云南高黎贡山自然保护区泸水县片马镇地区对一群怒江金丝猴的社会组织进行研究,基于野外实地记录与获得的视频资料统计猴群的个体数量,研究群数量初步估计为100 只。根据体型、毛色及是否携带婴猴等特征来划分所有个体的性别年龄组,依据单元内个体通过林窗时移动的时间间隔比单元间短的原则来划分不同繁殖单元及全雄群。所有视频中共发现22 个一雄多雌单元(OMU) 和1 ...
寄生物是调节小哺乳动物种群波动的因子之一。许多生物和非生物因子可影响寄生物的感染。本研究以根田鼠为对象,在野外围栏条件下测定了根田鼠肠道寄生物种类及其感染率,并分析了根田鼠建群者数量、性别、年龄及时间对寄生物感染率的影响。结果表明,根田鼠肠道寄生物有球虫、线虫和绦虫,球虫是主要寄生物, Eimeria wenrichi 为球虫中的优势种;其感染率随根田鼠建群者数量增加而增加,且随时间而显著变化。在...
高原鼠兔对退化草地植物群落结构及恢复演替的影响
高原鼠兔 退化草地 植物群落 恢复演替
2016/7/18
2009 年4 月至2011 年9 月采用围栏封育和去除法,对去除高原鼠兔的处理组和鼠兔扰动(对照组)区域植物群落结构、物种组成和地上生物量进行了比较分析,旨在阐明高原鼠兔对草地植物群落结构和群落演替的影响。结果表明:去除高原鼠兔处理组和对照区域植物群落平均高度和种盖度逐年上升,均在2011 年达到最大值,平均高度分别为6. 5 cm 和4. 2 cm,二者差异极显著(F =127. 80,df ...
Accurate Estimation of Effective Population Size in the Korean Dairy Cattle Based on Linkage Disequilibrium Corrected by Genomic Relationship Matrix
Linkage Disequilibrium Dairy Cattle Effective Population Size SNP
2016/5/12
Linkage disequilibrium between markers or genetic variants underlying interesting traits affects many genomic methodologies. In many genomic methodologies, the effective population size (Ne) is import...
Identification and Association of SNPs in TBC1D1 Gene with Growth Traits in Two Rabbit Breeds
TBC1D Polymorphism High-resolution Melting Growth Traits Rabbit
2016/5/12
The TBC1D1 plays a key role in body energy homeostasis by regulating the insulin-stimulated glucose uptake in skeletal muscle. The present study aimed to identify the association between genetic polym...
Effect of FTO Expression and Polymorphism on Fat Deposition in Suzhong Pigs
FTO, Fat Deposition Expression Polymorphism Suzhong Pig
2016/5/12
Fat mass and obesity associated gene (FTO) plays an important role in appetite control and energy consumption in human and mice. In order to examine FTO expression influence on fat deposition in Suzho...
Variance Components and Genetic Parameters for Milk Production and Lactation Pattern in an Ethiopian Multibreed Dairy Cattle Population
Genetic Parameters Milk Yield Multibreed Tropics
2016/5/12
The objective of this study was to estimate variance components and genetic parameters for lactation milk yield (LY), lactation length (LL), average milk yield per day (YD), initial milk yield (IY), p...
Comparison and Correlation Analysis of Different Swine Breeds Meat Quality
Pork Meat Quality pH Pure Breed Correlation Carcass Grade
2016/5/12
This study was performed to determine the influence of pig breed and gender on the ultimate pH and physicochemical properties of pork. The correlations between pH and pork quality traits directly rela...