Human Knowledge On The Diversity Of Fish Wildlife

726 Words Apr 14th, 2016 3 Pages
Dr. Olaf L.F. Weyl is an ichthyologist from the South African Institute for Aquatic Biodiversity. The goal of his research is to develop human knowledge on the diversity of fish wildlife. According to Dr. Weyl, both quantitative and qualitative data on this subject was severely lacking. Any numerical data acquired was not necessarily accurate. Another worry of his, was the impact of introductions of recreational fishing species, such as carp, trout, and bass, on the native fish of Southern Africa. Dr. Weyl had many questions and performed many experiments on a variety of aquatic animals. Using go-pros, scuba gear, drip stations, and nets, he and his students were able to gather and observe large amounts of fish for experiments.
He tried really hard to emphasize how large the impact of non-native species are on native species. In one experiment, a count of species in six separate pond less than 100 meters apart were taken. He encountered something odd so he took data from more ponds. After analyzing the data of many ponds, it became obvious that where there were no minnows there were bass. Where there were no bass, they found minnows. If bass ever invades a body of water, take over is total. There is no sharing.
In another experiment, the hunting and eating habits of a semi aggressive native South African fish, kurper, was examined. Multiple kurper were captured and put in a tank. Different species of prey was then added. As the kurper hunted, they were videoed. It turns out…

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