Where in the World are the Old World Tropics?

The Old World tropics refer collectively to the tropical zone in Europe, Africa, and Asia. The term "Old World" is a historic reference to the land masses known to Europeans in the 15th century before Christopher Columbus' voyages. The New World refers collectively to North and South America and Australasia.  

International Pollinators: Lizards, Gliders, and Lemurs, Oh My

A male blue-tailed day gecko feeding on a bright pink Trochetia blackburniana flower.
A male blue-tailed day gecko
(Phelsuma cepediana) feeding on a
Trochetia blackburniana flower. Photo courtesy of Dennis Hansen.

In the United States, insects, hummingbirds, and bats are all common pollinators. However, outside of North America, critters like birds (other than hummingbirds), marsupials, primates, reptiles, and rodents have the job of transferring pollen from plant to plant. Honeyeaters (Family: Meliphagidae) live in Australasia and sunbirds and sugarbirds (Family: Nectariniidae) live in the Old World tropics. Both families of birds use brush-tipped tongues to collect nectar and transfer pollen. In Australia, plants in the Proteaceae family are commonly pollinated by marsupials like honey possums (Tarsipes rostratus) and pygmy-possums (Cercartetus spp.). Capuchin monkeys that live in Central and South America lap nectar from flowers and their hairy faces become covered in pollen. This pollen is then transferred to the next flower they visit. Thirty seven different lizard species have been documented providing pollination services, primarily on islands due to fewer insects being available for the lizards to eat. Rodents are often found pollinating plant species in Africa. So the next time you think about pollinators, take a minute to remember all of the unique relationships that have developed between plants and pollinators!

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