Study shows how human food affects rare rock iguanas
By Summit Voice
FRISCO — There are plenty of good reasons to follow the old adage about not feeding wild animals, and a recent study of endangered Bahamian rock iguanas provides even more proof.
According to the findings, tourist-fed iguanas are suffering physiological problems as a result of eating human food. In the study, led by Charles Knapp of the John G. Shedd Aquarium in Chicago, the scientists compared blood and faecal samples from iguanas that were fed by tourists to samples from iguanas that did not have any interactions with humans.
The body condition of the two groups of iguanas was similar, but indicators for dietary indicators showed the effects of feeding by humans. Both male and female iguanas from the islands frequently visited by tourists showed notably different levels of glucose, potassium, and uric acid, as well as levels of other minerals. The female iguanas from tourist areas differed significantly in ionized calcium. (more…)