|bee with deformed wings - Shawn Caza, CC 2.0 license|
|Jabuticaba or Brazilian Grape, from Wikipedia|
|Hawaiian fruit fly: photo Kevin Kaneshiro|
Some vegetables lead a precarious existence in their garden though. They said some of the many endemic Hawaiian fruit flies attack any large tomatoes they plant so they only grow cherry-style tomatoes. I'll note that there are invasive Asian fly species in Hawaii that attack fruit. The more than 500 Hawaiian fruit fly species are a textbook study in evolution and adaptation on islands - see the Natinal Academy of Science's Evolution in Hawaii: A Supplement to Teaching About Evolution and the Nature of Science.
Much as I envy Cynthia and Marlin's growing environment, I don't envy them living on the edge of a zone of active lava flows. Looking at their neighborhood from Google Satellite, they pointed out areas where houses had been destroyed by lava in the last 10 years - some of which are being rebuilt. It's a precarious but rich life, just like the precarious life of Hawaiian honeybees. Marlin told us he had a friend whose previously healthy hives had just collapsed. I looked at a map in the Sheffield researcher's Science magazine article, that showed which parts of the islands were infested with the mites in 2009. Sure enough, Marlin and Cynthia's part of the big island of Hawaii was infested then while more northwesterly parts had not yet been infested, so in their neighborhood there has been enough time for the damaging strain of the virus to become omnipresent. A Hawaiian government map from 2007 shows that the mite was not present on the big island then. So, in perhaps 2-4 years after the introduction of the mite, beekeepers have been seeing increased losses.
Varroa mite can't be the whole story in colony collapse disorder, because mites have been present in continental North America for about 30 years while colony collapse has been noticed in the last decade. But this story of invasive flies, mites, and lava flows helps us understand some of the many ways life can be precarious for farmers, pollinators, and home owners.