Tue Jan 3, 2012, 02:05 PM
liberal N proud (48,653 posts)
Evolution in action - Hybrid Sharks
Australia's hybrid shark reveals evolution in action
Hybrid sharks have been discovered swimming in the waters off Australia's east coast. The finding may be driven by climate change, a research team says, suggesting such discoveries could be more common in the future.
The hybridization is between the Australian black tip shark which favors tropical waters and the larger, common black tip shark, which favors sub-tropical and temperate waters.
While the distribution for the genetically distinct species overlaps along the northern and eastern Australian coastline, the finding that they mated and produced offspring is unprecedented, according to the discovery team from the University of Queensland.
"To actually find something like this and prove it genetically is unprecedented," Bob Hueter, director of the Center for Shark Research at the Mote Marine Laboratory in Sarasota, Florida, told me Tuesday.
4 replies, 2837 views
Always highlight: 10 newest replies | Replies posted after I mark a forum
Replies to this discussion thread
Evolution in action - Hybrid Sharks (Original post)
|liberal N proud||Jan 2012||OP|
Response to liberal N proud (Original post)
Tue Jan 3, 2012, 02:20 PM
Humanist_Activist (4,344 posts)
2. This isn't evolution in action, this is hybridization in action...
of course, whether the crossbreeds can be fertile is dependent on how different their parent species are, but this isn't how evolution works, evolution is descent with modification causing speciation through a combination of natural selection, genetic drift, and mutation.
Oh, by the way, I absolutely hate how the media reports on scientific discoveries and facts.