A new epidemiological study of endangered juvenile green sea turtles in eastern Brazil suggests that factors such as water temperature, salinity and proximity to environmental stressors could trigger the development of a tumor disease associated with a herpesvirus.
, also found that the distribution of the tumors from fibropapillomatosis, or FP, can provide clues to better understanding the disease.
The tumors caused by FP grow on the neck, eyes, flippers and limbs, and although they are not invasive, they may affect feeding, swimming and other activities.Although the disease is caused by a virus, the Chelonid herpesvirus 5, not all turtles infected with the virus will develop FP. The tumors tend to be more frequent in juvenile turtles that live near, which suggests that habitat quality may play a role in the progression of the disease.
The team of researchers looked at two datasets: daily beach surveys documenting stranded or dead turtles along 250 miles of coastline over four years, and a database about the size and location of tumors on 271 turtles from the same region. The study suggests that looking at how the tumors are distributed on the turtle's body can provide hints about what individual and environmental factors triggered the growths.
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