2017年12月1日 · Fordham University graduate student Matthew Combs studies the DNA of New York City's rats. He found that rats living uptown are genetically distinct from rats living downtown. Rats have...

However, a 2023 study estimates that there are approximately 3 million rats in New York, which is close to a third of New York's human population. The city's rat population is dominated by the brown rat (also known as the Norway rat). The average adult body weight is 350 grams (12 oz) in males and about 250 grams (8.8 oz) in females.

2024年5月28日 · Combs discovered two genetically distinct subpopulations of New York City rats — uptown and downtown — and even genetic differences among rats in adjacent neighborhoods such as the West and East Villages.

2017年11月29日 · Manhattan has two genetically distinguishable groups of rats: the uptown rats and the downtown rats, separated by the geographic barrier that is midtown. It’s not that midtown is...

2017年12月4日 · But while we’ve often just seen the rats as, well, rats, Matthew Combs, a student at Fordham University, has found that there are actually uptown rats, and downtown rats, divided from the...

2018年6月9日 · In the new report, the biologist and his colleagues mapped the genetics of rats in four cities in the New World: New Orleans, New York, Vancouver and the Brazilian city of Salvador. The researchers captured at least 150 rats in each city, snipped off a bit of tissue and probed the samples for 15,000 genetic markers.

2017年12月1日 · NEW YORK — It sounds more like a real estate issue than a scientific one, but the difference between a downtown Manhattan neighborhood and an uptown one can be discerned by the rats that live...

2017年12月1日 · Segregation is real if you're a rat in New York City, though likely for more prosaic reasons than in their human counterparts. A recent genetic study of NYC rats found unique populations living in uptown and downtown Manhattan, indicating that they probably don't interact with each other all that much.

2018年5月28日 · In fact, they found two genetically distinct rat subpopulations in Manhattan: Uptown rats and Downtown rats. The two subpopulations were separated by Midtown, where the rats had lower levels of diversity, a reduced population size, and reduced migration rates.

2017年11月30日 · Apparently, rats that live Uptown and Downtown in New York City have distinct genetic differences, according to a new paper out of Fordham University. Matthew Combs, a PhD student at...