2017年11月8日 · The earliest ancestors of eutherian mammals were small rat-like creatures (depicted in this illustration) that lived 145 million years ago in the shadow of the dinosaurs.

2023年10月9日 · Rattus originated in Southeast Asia about 4 million years ago. Rats reached Europe about 3 million years ago, Australia about 1 million years ago, and America about 500 thousand years ago. They were able to colonize these continents by hitching rides on human ships or rafts, or by crossing land bridges during glacial periods.

2024年9月19日 · In this Review, we explore recent advances in the evolutionary history of brown rats and discuss key challenges, including finding and accurately dating historical specimens, disentangling histories of multiple domestication events, and synthesizing functional variation in wild rat populations with the development of laboratory strains.

2017年11月8日 · Fossil teeth belonging to a small rat-like mammal were discovered in the coast of Dorset, in England. Paleontologists believe that the animal is the first known creature belonging to the line...

2024年8月1日 · Rats have been present in human settlements since ancient times. Their ability to thrive in various environments made them both companions and pests in early civilizations. In ancient Egypt, rats were seen as both pests and symbols. They were known to damage crops and stored food, leading to their association with destruction and disease.

2017年11月7日 · Fossils of the oldest mammals related to mankind — small rat-like creatures — have been discovered in southern England, a new study released Tuesday reports. The fossils were two teeth from the...

2010年1月25日 · Many rodents, murines (e.g., mice and rats) in particular, are typical r-strategists (favoring quantity over quality in offspring) and evolved extremely short generation times and extraordinary explorative and adaptive abilities, exerting significant impacts on population structures and their evolutionary rates (Spradling et al. 2001).

Historical evidence indicates that brown rats went through a series of human-influenced and/or controlled-breeding events at different times and locations: Japan in the 1600 to 1700s, Europe in the early 1800s, and North America in the mid-1800 to early 1900s.

2021年6月19日 · Historical evidence indicates that brown rats went through a series of human-influenced and/or controlled-breeding events at different times and locations: Japan in the 1600 to 1700s, Europe in the early 1800s, and North America in the mid-1800 to early 1900s.

In this Review, we explore recent advances in the evolutionary history of brown rats and discuss key challenges, including finding and accurately dating historical specimens, disentangling histories of multiple domestication events, and synthesizing functional variation in wild rat populations with the development of laboratory strains.