搜索结果: 1-15 共查到“动物学 Populations”相关记录78条 . 查询时间(0.115 秒)
Asian butterfly populations show different mimicry patterns,thanks to genetic 'switch'（图）
Asian butterfly populations different mimicry patterns genetic 'switch'
2021/1/26
A new study by researchers at the University of Chicago and the City College of New York has identified a unique, genetic "mimicry switch" that determines whether male and female Elymni...
Collapse of desert bird populations likely due to heat stress from climate change（图）
Collapse bird populations due heat stress climate change
2019/10/4
As temperatures rise, desert birds need more water to cool off. At the same time, deserts are becoming drier, setting some species up for a severe crash, if not extinction, according to a new study pu...
Genetic Diversity Analysis of South and East Asian Duck Populations Using Highly Polymorphic Microsatellite Markers
Discrimination Duck Genetic Diversity Microsatellite Marker
2016/5/19
Native duck populations have lower productivity, and have not been developed as much as commercials duck breeds. However, native ducks have more importance in terms of genetic diversity and potentiall...
Genetic Diversity and Phylogenetic Analysis of South-East Asian Duck Populations Based on the mtDNA D-loop Sequences
Duck Populations D-loop Region Haplotype Mitochondrial DNA Phylogeny
2016/3/22
The maternally inherited mitochondrial DNA (mtDNA) D–loop region is widely used for exploring genetic relationships and for investigating the origin of various animal species. Currently, domestic duck...
Mosquitofish populations with more females have greater ecological impact
Mosquitofish populations more females greater ecological
2015/10/20
Female mosquitofish are not only bigger than the males, they have bigger impacts on freshwater ecosystems. In a controlled study conducted in experimental ponds, researchers found dramatic differences...
Genetic Parameters of Pre-adjusted Body Weight Growth and Ultrasound Measures of Body Tissue Development in Three Seedstock Pig Breed Populations in Korea
Pig Growth Trait Ultrasound Measures Heritability Genetic Correlation
2015/5/19
The objective of this study was to compare the effects of body weight growth adjustment methods on genetic parameters of body growth and tissue among three pig breeds. Data collected on 101,820 Landra...
Genetic Diversity and Population Structure in Native Chicken Populations from Myanmar, Thailand and Laos by Using 102 Indels Markers
Indels Markers Genetic Admixture Genetic Diversity Native Chicken
2015/5/17
The genetic diversity of native chicken populations from Myanmar, Thailand, and Laos was examined by using 102 insertion and/or deletion (indels) markers. Most of the indels loci were polymorphic (71%...
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
2014/5/17
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...
Empirical Selection of Informative Microsatellite Markers within Co-ancestry Pig Populations Is Required for Improving the Individual Assignment Efficiency
Microsatellite Markers Pigs Assignment Test
2014/5/16
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...
Genetic Diversity of mtDNA D-loop Polymorphisms in Laotian Native Fowl Populations
Native Fowl Genetic Variability mtDNA Maternal Origin
2013/5/16
Here, we studied the genetic diversity of native fowls in Laos by analyzing a mitochondrial DNA (mtDNA) sequence polymorphism. A 546-bp fragment of the mtDNA D-loop region was sequenced in 129 chicken...
Effects of Dietary Supplementation with Hainanmycin on Protein Degradation and Populations of Ammonia-producing Bacteria In vitro
Ammonia-producing Bacteria Fermentation Hainanmycin Protein Degradation
2013/5/11
An in vitro fermentation was conducted to determine the effects of hainanmycin on protein degradation and populations of ammonia-producing bacteria. The substrates (DM basis) for in vitro fermentation...
Analysis of Geographic and Pairwise Distances among Chinese Cashmere Goat Populations
Cashmere Goat Geographic Distance Pairwise Distance Genetic Diversity
2013/5/11
This study investigated the geographic and pairwise distances of nine Chinese local Cashmere goat populations through the analysis of 20 microsatellite DNA markers. Fluorescence PCR was used to identi...
Effect of Population Reduction on mtDNA Diversity and Demographic History of Korean Cattle Populations
Cattle Mitochondrial DNA Genetic Diversity Population Expansion
2012/5/10
The population sizes of three Korean indigenous cattle populations have been drastically reduced over the past decades. In this study, we examined the extent to which reduction in populations influenc...
Shallow Population Genetic Structures of Thread-sail Filefish (Stephanolepis cirrhifer) Populations from Korean Coastal Waters
Demographic History Population Genetic Structure Nucleotide Sequence Analysis
2012/5/9
Genetic diversities, population genetic structures and demographic histories of the thread-sail filefish Stephanolepis cirrhifer were investigated by nucleotide sequencing of 336 base pairs of the mit...
Tissues Expression, Polymorphisms of IFN Regulatory Factor 6 (IRF6) Gene and Their Associated with Immune Traits in Three Pig Populations
Pig, IRF6, Expression, Polymorphisms, Association Analysis
2012/5/9
Interferon regulatory factor 6 (IRF6) gene is a member of the IRF-family, and plays functionally diverse roles in the regulation of the immune system. In this report, the 13,720 bp porcine IRF6 genomi...