In Depth
- Author
- Ellis DV
- Address
- Biology Department, University of Victoria, B.C., Canada.
- Title
- Wetlands or aquatic ape? Availability of food resources.
- Source
- Nutrition & Health 1993;9(3):161-4
- Abstract
- A human evolutionary scenario including an ape inhabiting
marine wetlands is rational in a number of contexts. The concept
is viable ecologically due to the availability of abundant
animal foods in a variety of habitats ranging from mangrove
forests to coral reefs. The food resources include mollusks,
crustacea and fish abundant in wet zones and pools between high
and low tide levels. There is seasonal abundance of swarming
marsh insects, turtles, eggs and chicks of colonial birds, and
occasional beached and dying marine mammals. Some of these foods
would provide an enriched source of polyunsaturated essential
fatty acids needed for brain development, and thus allow a
spiral of increasing brain development, tool utilisation for
better food gathering, and vocal communication for group action.
The concept is viable also in terms of availability of the ape-
human stock in the African Rift Valley, isolated from montane
forests during the late Pliocene, and as an adaptive explanation
for many of the species-specific human characters not found in
other ground living primates.
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