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St.Kitts Rodent Recovery Day 68
There has been a new discovery regarding the speciation of the Sciurus kittus and the Sciurus nevisus. After further exploring the habitats of each species, it has another form of prezygotic isolation was revealed – habitat isolation. Though both species live on trees, I have discovered that Sciurus kittus prefer to live on cashew nut trees (Anacardium excelsum) that are often located close to the ground whereas the Sciurus nevisus are found on taller more dense trees such as star apple trees (Chrysophyllum cainito).
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| Cashew Tree |
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| Star Apple Tree |
Though the reason behind this has yet to the explored, the two species
preferences for different habitats help maintain their isolation.
It is
hypothesized that, besides the taste preferences, since St. Kitts rodents are
able to reach a higher top speed than the Nevis Island rodents, they have
higher chances of escaping ground predators so they don’t require as much protection
from the trees.
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