A study of 25 Nile crocodiles in Lake St. Lucia, a World Heritage site in South Africa, found that the highest lead concentrations “ever reported for crocodilians worldwide” was due to the ingestion of fishing weights. That lead poisoning -- from when the animals scoop up stones from the lake floor to help with digestion -- caused anemia in some of the crocodiles as well as “severe tooth loss,” the researchers from three universities in the country and the South African National Biodiversity Institute said in the study.
from Engineering News | Home https://ift.tt/ZQ9sX4Y
