Saturday, January 18, 2014

Nematodes have adapted to life in every environment possible, feed on bacteria, fotos de flores fun

The characteristics of Nematodes fotos de flores | Articles fotos de flores Biology
Nematodes, also known as roundworms, are one of the 37 phyla of animal life, and one of the most numerous and diverse. More than 80,000 species have been named by science, and the numbers, nematodes are one of the many animals there. Nematodes are found in large numbers in all terrestrial, marine, and freshwater fotos de flores environments, where they exceed all other animals, including insects. There are an estimated 1,018 (one trillion) and 1021 (one sextillion) nematodes worldwide.
Nematodes have adapted to life in every environment possible, feed on bacteria, fotos de flores fungi, protozoa, and the contents of other animals or plants. Of the 80,000 species of nematodes were given scientific fotos de flores names, over 18,000 are parasitic. Scientists believe that the number of nematode species can exceed 500,000. Different parasitic nematodes adapted fotos de flores to different hosts, and varies according to length. Nematodes are called "roundworms" especially when it is found in the human gut, where they may be several fotos de flores inches long and cause disease. The roundworm largest ever found was 8.5 m (28 feet) long, with 32 ovaries, was found in the gut of a whale.
Nematodes are estimated to make up 90% of all life on the sea floor, and is found in the deepest ocean trenches, fotos de flores where the pressure is 100 times greater than at the surface. Three species of nematodes found in the McMurdo Dry Valleys of Antarctica, one of the harshest environments fotos de flores on earth, where the temperature reached -60 C (-76 F) in winter and wind speeds exceeding 320 km / h (200 mph), stripping almost all moisture. Nematodes can survive in small drops of water in the rock, consuming bacteria.
Nematodes can be a plague for farmers, causing billions of dollars in crop damage each year. On the plus side, one of the nematode, Caenorhabditis elegans long-1mm is a model organism in biology, and extensive fotos de flores study of the structure, fotos de flores life cycle, and genetics has been a boon to the field. Each cell in C. elegans (959 in the adult hermaphrodite; 1031 in adult males) have been mapped, fotos de flores throughout their developmental fate is known. Using genetic manipulation techniques, scientists have been able to extend the life of C. elegans ten-fold, from about the 19 days to 190 days. Some of these techniques may find future applications in medicine.
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