A look at the brains of an endangered spiny rat off the coast of Japan by University of Missouri (MU) Bond Life Sciences Center scientist Cheryl Rosenfeld could illuminate the subtle genetic ...

The insular distribution and abundance of the spiny rat (Proechimys semispinosus) were studied by live-trapping rats on 50 small forested islands in Gatun Lake, Republic of Panama. Rats were found on ...

The Sox9 gene is upregulated in the absence of sex-determining Y chromosome and Sry gene in Amami spiny rat. In mammals, the distinction between male and female at the chromosomal level is due to the ...

Similarly, spiny-ness arose in a lineage containing shrews (the tenrecs) and in rodents, which are not closely related to shrews. And then, spiny-ness occurs in several branches of the rodent group: ...

Periods are a strange phenomenon. We don’t know why humans have them, or, to look at it another way, why most other animals don’t. Scientists say only 1.5 percent of mammal species have periods, and ...

The Y chromosome, carrier of male identity, is slowly fading away. Does its gradual disappearance signal the end of the human species? A recent discovery in Japanese spiny rats offers a glimmer of ...

Attempts to infect native Panamanian mammals with culture forms of local human strains of Leishmania braziliensis produced cutaneous infections for the first time in the spiny rat (Proechimys ...

Scientists zeroed in on brain circuitry powering the desire of spiny mice to live in large groups, opening the door to a new model for the study of complex social behaviors in mammals. Scientists ...