The Przewalski's gazelle,Procapra przewalskii,is one of the most endangered species in China,and is now found only in a single small area around the Lake Qinghai.In this study,the complete mitochondrial genome of ...The Przewalski's gazelle,Procapra przewalskii,is one of the most endangered species in China,and is now found only in a single small area around the Lake Qinghai.In this study,the complete mitochondrial genome of P.przewalskii was determined and annotated.The circular genome is 16 547-bp long,containing13 protein-coding genes,22 transfer RNA genes,2 ribosomal RNA genes,and a predicted control region.The overall base composition was 34.0% A,24.7% C,28.3% T,and 13.0% G,with a total A + T content of 62.3%.Phylogenetic analysis of all 19 Bovidae species indicated that P.przewalskii showed a close relationship to Procapra gutturosa.Our results provide a great deal of useful information on further studies for conservation biology of Przewalski's gazelle.展开更多
There are six antelope species live or once lived in China. they mainly occupy steppes, alpine meadows, grasslands and desert shrub-lands in north and northwest china. Among them, the saiga is pronounced extirpated in...There are six antelope species live or once lived in China. they mainly occupy steppes, alpine meadows, grasslands and desert shrub-lands in north and northwest china. Among them, the saiga is pronounced extirpated in wild of the country, thePrzewalskt’s gazelle is now critically endangered. Mongolian gazelle and Tibetan antelope were once important game species, now their distributions are greatly reduced.展开更多
Reproductive traits are central to organismal fitness,and so the factors influencing patterns of reproduction and offspring survival are at the heart of biology.Making use of breeding data collected over 16 years at t...Reproductive traits are central to organismal fitness,and so the factors influencing patterns of reproduction and offspring survival are at the heart of biology.Making use of breeding data collected over 16 years at the King Khalid Wildlife Research Centre in Saudi Arabia,we investigated the reproductive biology of Arabian gazelles Gazella arabica.Offspring survival was mainly a function of birth weight,with heavier offspring having higher survival rates than lighter offspring.However,while sons were heavier than daughters,daughters had higher survival rates.We could not find evidence that giving birth to sons negatively impacts offspring weight in the following year.We uncovered large narrow-sense heritability(h2)in offspring weight at birth,while maternal effects(m2)on birth weight were of lesser importance.However,maternal effects on offspring survival were strong until weaning age,while paternal effects dominated survival to sexual maturity and first reproduction.We propose that variation in maternal postnatal care might overshadow the effects of maternal inheritance of birth weights,while the overall strong heritability of weight at birth and the paternal effects on survival llustrates strong variance in sire fitness based on genetic quality,suggesting a role for sexual selectionbyfemalemate choiceinwildpopulations.展开更多
基金Supported by National Natural Science Foundation of China(31301976)the Innovation Project of Chinese Academy of Agricultural Sciences(CAAS-ASTIP-2014-LIHPS-01)
文摘The Przewalski's gazelle,Procapra przewalskii,is one of the most endangered species in China,and is now found only in a single small area around the Lake Qinghai.In this study,the complete mitochondrial genome of P.przewalskii was determined and annotated.The circular genome is 16 547-bp long,containing13 protein-coding genes,22 transfer RNA genes,2 ribosomal RNA genes,and a predicted control region.The overall base composition was 34.0% A,24.7% C,28.3% T,and 13.0% G,with a total A + T content of 62.3%.Phylogenetic analysis of all 19 Bovidae species indicated that P.przewalskii showed a close relationship to Procapra gutturosa.Our results provide a great deal of useful information on further studies for conservation biology of Przewalski's gazelle.
文摘There are six antelope species live or once lived in China. they mainly occupy steppes, alpine meadows, grasslands and desert shrub-lands in north and northwest china. Among them, the saiga is pronounced extirpated in wild of the country, thePrzewalskt’s gazelle is now critically endangered. Mongolian gazelle and Tibetan antelope were once important game species, now their distributions are greatly reduced.
文摘Reproductive traits are central to organismal fitness,and so the factors influencing patterns of reproduction and offspring survival are at the heart of biology.Making use of breeding data collected over 16 years at the King Khalid Wildlife Research Centre in Saudi Arabia,we investigated the reproductive biology of Arabian gazelles Gazella arabica.Offspring survival was mainly a function of birth weight,with heavier offspring having higher survival rates than lighter offspring.However,while sons were heavier than daughters,daughters had higher survival rates.We could not find evidence that giving birth to sons negatively impacts offspring weight in the following year.We uncovered large narrow-sense heritability(h2)in offspring weight at birth,while maternal effects(m2)on birth weight were of lesser importance.However,maternal effects on offspring survival were strong until weaning age,while paternal effects dominated survival to sexual maturity and first reproduction.We propose that variation in maternal postnatal care might overshadow the effects of maternal inheritance of birth weights,while the overall strong heritability of weight at birth and the paternal effects on survival llustrates strong variance in sire fitness based on genetic quality,suggesting a role for sexual selectionbyfemalemate choiceinwildpopulations.
