JOHANNESBURG (AFP) - Nearly 200 rhinos were killed in South Africa in the first half of 2011, with most slaughtered in the world-famous Kruger National Park, environmental group WWF said Sunday. South Africa lost 193 rhinos in the first six months of the year, with 126 of them killed in Kruger, one of South Africas top tourist draws, the group said in a statement. Last year a record 333 rhinos were killed in South Africa, which is home to about 70 percent of the worlds rhino population. Authorities have arrested 123 suspected poachers so far this year, with six convictions. But the stepped-up law enforcement efforts have yet to slow the slaughter.