Hammerhead sharks can reproduce without having sex
The evidence comes from a shark at Henry Doorly Zoo in Nebraska which gave birth to a pup in 2001 despite having had no contact with a male.
Genetic tests by a team from Belfast, Nebraska and Florida prove conclusively the young animal possessed no paternal DNA, Biology Letters journal reports.
The type of reproduction exhibited had been seen before in bony fish but never in cartilaginous fish such as sharks.
read the full story at BBC news
http://news.bbc.co.uk/1/hi/sci/tech/6681793.stm
Contributed by Tim Hochgrebe added 2007-05-24
Login or become a member to join in with this discussion.
Local Dive Thailand
Phuket's local scuba diving experts. A great blend of Thai local knowledge and European professionalism that equals a superb dive experience with the most knowledgeable guides and instructors
Articles
-
Sponges: More Than Just a Bathroom Accessory
- One animal that every diver will have encountered, because they don't hide or swim away and are mostly brightly coloured: the sponge. Sponges are single or colonial animals which body bears many pores. Hence the name of its Phylum: Porifera (Latin porus, 'pore'; ferre, 'to bear').
