Bdelloidea
Frederic P. Miller, Agnes F. Vandome, John McBrewster
Bdelloidea is a class of rotifers found in fresh water and moist soil. Bdelloids typically have a well developed corona, divided into two parts, on a retractable head. They may move by swimming or crawling. The latter commonly involves taking alternate steps with the head and tail, as do certain leeches, which gives the group their name. Bdelloids have been of interest to those interested in the evolutionary role of sexual reproduction, because it has disappeared entirely from the group: males are unknown, and females reproduce exclusively by parthenogenesis. Each individual has paired gonads. Despite the fact that they have been asexual for millions of years, they have diversified into more than 300 species and are fairly similar to...
ISBN: 978-6-1307-5416-7
Издательство:
Книга по требованию
Дата выхода: июль 2011