A new species Macrobiotus wuyishanensis sp. nov. （Tardigrada： Macrobiotidae） is described from Mt. Wuyi, Southeastern China. It is most similar to Macrobiotus spectabilis Thulin, 1928, but differs by lacking fine p...A new species Macrobiotus wuyishanensis sp. nov. （Tardigrada： Macrobiotidae） is described from Mt. Wuyi, Southeastern China. It is most similar to Macrobiotus spectabilis Thulin, 1928, but differs by lacking fine punctuation on the distal half of the projections on the egg, a ring of polygons that circle the base of each projection, and punctation between the projections on the egg shell. It is also similar to M. grandis Richters, 1911, but differs by smaller body size, lacking polygons and punctations between the projections on egg shell.展开更多
The impact of starvation and anhydrobiosis on the number and size of the storage cells in the tardigrade species Milnesium tardigradum, Paramacrobiotus tonollii and Macrobiotus sapiens was investigated to gain more in...The impact of starvation and anhydrobiosis on the number and size of the storage cells in the tardigrade species Milnesium tardigradum, Paramacrobiotus tonollii and Macrobiotus sapiens was investigated to gain more insight on the energetic side of anhydrobiosis. Storage cells are free floating cells within the body cavity of tardigrades and are presumed to store and release energy in form of glycogen, protein and fat to maintain a constant nutrient regime for the other tissues. The body size of the animals was not correlated with the size of the storage cells, however, M. tardigradum the largest species analysed also had the largest storage cells. A reduction in the size of the storage cells is apparent in all three species after seven days of starvation. A seven-day period of anhydrobiosis leads to a decrease in cell size in M. tardigradum but not in P. tonollii and M. sapiens. Although M. sapiens was raised on green algae, and M. tardigradum and P. tonollii were fed with rotifers and nematodes this difference in nourishment was not reflected in the response of the storage cells to anhydrobiosis展开更多
基金supported by the National Natural Science Foundation of China(31071888)
文摘A new species Macrobiotus wuyishanensis sp. nov. （Tardigrada： Macrobiotidae） is described from Mt. Wuyi, Southeastern China. It is most similar to Macrobiotus spectabilis Thulin, 1928, but differs by lacking fine punctuation on the distal half of the projections on the egg, a ring of polygons that circle the base of each projection, and punctation between the projections on the egg shell. It is also similar to M. grandis Richters, 1911, but differs by smaller body size, lacking polygons and punctations between the projections on egg shell.
基金enabled by the project FUNCRYPTA (0313838A)funded by the German Federal Ministry of Education and Research,BMBF
文摘The impact of starvation and anhydrobiosis on the number and size of the storage cells in the tardigrade species Milnesium tardigradum, Paramacrobiotus tonollii and Macrobiotus sapiens was investigated to gain more insight on the energetic side of anhydrobiosis. Storage cells are free floating cells within the body cavity of tardigrades and are presumed to store and release energy in form of glycogen, protein and fat to maintain a constant nutrient regime for the other tissues. The body size of the animals was not correlated with the size of the storage cells, however, M. tardigradum the largest species analysed also had the largest storage cells. A reduction in the size of the storage cells is apparent in all three species after seven days of starvation. A seven-day period of anhydrobiosis leads to a decrease in cell size in M. tardigradum but not in P. tonollii and M. sapiens. Although M. sapiens was raised on green algae, and M. tardigradum and P. tonollii were fed with rotifers and nematodes this difference in nourishment was not reflected in the response of the storage cells to anhydrobiosis
