Long term study finds lemon sharks go home to reproduce
A long-term study provides the first ‘direct evidence’ that female sharks return home to breed. Researchers tracked lemon sharks in the Bahamas for 17 years and found that pregnant females prefer to give birth where they were born. Hundreds of sharks were born between 1995 and 2012, but only about a dozen actually reached adulthood. Of those, six females returned home to give birth between the ages of 14 and 17. The results strengthen the argument for fishing restrictions at specific locations during known breeding times.
Sharks prefer to sneak up from behind, study shows
Previous studies of sharks approach to prey indicate that they prefer to avoid the prey’s field of vision and attack from behind. A new study shows that Caribbean reef (Carcharhinus perezi) sharks can comprehend body orientation in humans as well– they know if a human is facing them or not. Using divers as test subjects, researchers found that more sharks preferred to swim outside the person’s field of vision. The researchers note that this raises lots of questions about the behavior and mental capacity of sharks.
New ‘Baby Blackfish’ Born at SeaWorld
On Friday, SeaWorld San Antonio announced the birth of a new baby orca, 7-foot long female calf, born to 22-year old Takara. Check out this related post about the early stages of Takara’s pregnancy.
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