One of the greatest dangers to the manatee population is themselves.
Scientists now believe that manatees are threatened by their lack of genetic diversity. Lacking genetic diversity within a
species makes them more likely to catch disease along with making it harder to adapt. (4)
Currently, Biologists are taking place in a project known as the Sirenia Project. They are working on identifying
the genetic material of the manatee and how it is networked in the body. Their goal is to better understand and predict the animals'
ability to react to environmental stimuli, such as prolonged periods of cold weather, red tides, and viral diseases. - Sirenia
Project. (4)
Over time, the limited population growth along with environmental conditions has lead to the lack of genetic variation
in manatees. Bob Bonde, a biologists explains the situation.... "We know that in sexually reproducing organisms, genetic diversity
is necessary for long-term survival, It's how we ensure that our offspring are armed with the appropriate mechanisms to adapt
to a changing environment." Bonde's theory also includes that homogeneity has occurred because the lack of movement, which
promotes inbreeding. (4)
In Bonde's research, his team uses cytogenetic research along with DNA
fingerprinting. Through these methods, they have revealed the genetic homogeneity within the manatee population (Probably
caused by inbreeding). Genetic homogeneity (Similar genes) can result in abnormalities, and risks the ability to adapt. Because
genetic homogeneity makes it harder to adapt to change, a specie is more susceptible to disease. The general conclusion is
that if genetic homogeneity continues, manatees may become extinct. (4)
