Latest Demian Chapman Stories
In some sexually reproducing species, the competition between males to pass on their genetic material ends with conception. However, for sand tiger sharks that competition extends into the female’s uteri where baby sharks cannibalize one another until only one remains.
Studies show that coastal sharks have "DNA zip codes" that can reveal where they were born; underscores potential of DNA testing to monitor fin trade STONY BROOK, N.Y., April 29, 2011 /PRNewswire-USNewswire/ -- An international team of scientists, led by the Institute for Ocean Conservation Science at Stony Brook University, has used DNA to determine that groups of dusky sharks (Carcharhinus obscurus) and copper sharks (Carcharhinus brachyurus) living in different coastal regions across the...
An international team of scientists have used DNA to determine that groups of dusky sharks and copper sharks living in different coastal regions across the globe are in fact separate populations of each species.
These breakthrough findings provide strong evidence for enacting international trade protection for hammerhead sharks at the March 2010 CITES meeting in Qatar.
A long-term field and DNA study by the Institute for Ocean Conservation Science at Stony Brook University, University of Miami, Field Museum of Chicago and others has shown that young lemon sharks born at the Bimini islands
The second-known instance of "virgin birth" in a shark has been confirmed through DNA testing, scientists said.
- To swell, as grain or wood with water.