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Biologists estimate that there are approximately 8.8 million species of eukaryotes (animals with complex cell structure) currently alive on Earth. So far, humankind has only cataloged 1.9 million species and entire biomes remain largely unknown to us.
To illustrate this point, here is a photograph of a completely unknown genus of nudibranch mollusk photographed 1 mile beneath the surface of the ocean near Davidson seamount (which is an extinct underwater volcano just off the coast of Monterey). I wish I could tell you more about the strange mollusk, but this photograph, taken from a robotic deep sea submersible in 2002 is pretty much all that humankind knows about this species. The mission photographed a huge number of other gelatinous creatures in the middle depths of the ocean, and in fact caused scientists to rethink the importance of such animals in the oceanic ecosystem. The Monterey Bay Aquarium Research Institute (MBARI) worked on the mission with the National Oceanic and Atmospheric Administration. Their website explains the robotic study by paraphrasing Bruce Robinson, an ecologist who pioneered the use of robot submersibles:
One of the most important discoveries has been the realization that gelatinous animals are important as grazers and predators that comprise a large percentage of the open ocean animal biomass. Robison estimates that gelatinous animals make up about 40 percent of the biomass in the deep sea water column.
Nudibranch mollusks are largely thought of as colorful predators of the tropical reef, so it is a big deal if they (together with other floating mollusks, cnidarians, and siphonophores) constitute such a substantial percentage of the biomass of the largest portion of the ocean. As an unscientific postscript I think the delicate translucent nudibranch is very beautiful with its alien and ghostlike (and, yes, gelatinous) features.
Once again it is the mid-autumn festival (also known as the mooncake festival), one of the most important festivals of the Chinese calendar. I hope you and your friends get together to drink rice wine while looking at the jade rabbit who mixes magic herbs on the moon!
Last year Ferrebeekeeper explored the mid-autumn festival through poetry but this year we will concentrate instead on food. The quintessential foodstuff of the mooncake festival is the mooncake, a cake which is crafted to look like the moon [Ed. this is some fine work you’re doing here], however an equally lunar-looking foodstuff is nearly as important for celebrating the holiday. The pomelo is a beloved citrus fruit which has come to be integrally associated with the mid-autumn festival. The fruit is like a giant green or chartreuse grapefruit with a yellow-white or pinkish-red interior (depending on the variety). Pomelos can be quite large with a diameter that runs between 15 and 30 centimeters (6 to 12 inches) and they can weigh up to 2 kilograms (about 4 and a half pounds). The fruit is segmented like that of an orange (albeit with a great deal more pith) and tastes like a mild sweet grapefruit. In some varieties of southern Chinese cooking, the pomelo skin is used as an ingredient in its own right.
Because of its shape, its harvesting schedule, and its delightful taste, the pomelo is a mainstay of the mid-autumn moon festival. To quote gochengdoo.com, a Chines culture blog:
In Mandarin, pomelos are called 柚子 (you zi), a homophone for words that mean “prayer for a son.” Therefore, eating pomelos and putting their rinds on the head signify a prayer for the youth in the family. In addition, the Chinese believe that by placing pomelo rinds on their heads, the moon goddess Chang’e will see them and respond to their prayers when she looks down from the moon.
The pomelo has long been cultivated in China: the first allusions to the fruit date to 100 BC, but cultivation may go back further. Many of the citrus fruits we are most familiar with, such as oranges, lemons, and limes, are the end result of centuries—or even millennia–of hybridization and selective breeding. Pomelos are an exception. Native to Malaysia and Southeast Asia, the pomelo is one of the ancestral citrus fruit and the pretty trees grow wild in the jungles of Southeast Asia. It is believed that the first sweet oranges were probably a hybridization of pomelos and mandarins. Grapefruits are probably a descendant (it is hard to tell what the exact relations are since citrus trees hybridize so readily). What is certain is that the pomelo fruit is lovely and sweet and will enhance your ability to appreciate the moon tonight!
Happy lunar viewing!