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Eurotatoria
Eurotatoria is a superclass of rotifer The rotifers (, from Latin 'wheel' and 'bearing'), sometimes called wheel animals or wheel animalcules, make up a phylum (Rotifera ) of microscopic and near-microscopic Coelom#Pseudocoelomates, pseudocoelomate animals. They were first describ ...s. References * Ridder M. De 1957a Onderzoekingen over brakwaterrotatorien. I. Assenede. (Biol. Jaarb. 195, 89-131, 11 tab.) * Ridder M. De 1957b Onderzoekingen over brakwaterrotatorien. II. Het Zwin to Knokke. (Natuurw. Tijdschr. 39, 109-126, pl I.) External links * Superclasses (biology) {{rotifer-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bdelloidea
Bdelloidea (from Greek language, Greek βδέλλα, ''bdella'' 'leech') is a Class (biology), class of rotifers found in freshwater habitats all over the world. There are over 450 described species of bdelloid rotifers (or 'bdelloids'), distinguished from each other mainly on the basis of Morphology (biology), morphology. The main characteristics that distinguish bdelloids from #Evolutionary Relationships, related groups of rotifers are exclusively parthenogenesis, parthenogenetic reproduction and the ability to survive in dry, harsh environments by entering a state of desiccation-induced dormancy (anhydrobiosis) at any life stage. They are often referred to as "ancient asexuals" due to their unique asexual history that spans back to over 25 million years ago through fossil evidence. Bdelloid rotifers are microscopic organisms, typically between 150 and 700 μm in length. Most are slightly too small to be seen with the naked eye, but appear as tiny white dots through even ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurotatoria
Eurotatoria is a superclass of rotifer The rotifers (, from Latin 'wheel' and 'bearing'), sometimes called wheel animals or wheel animalcules, make up a phylum (Rotifera ) of microscopic and near-microscopic Coelom#Pseudocoelomates, pseudocoelomate animals. They were first describ ...s. References * Ridder M. De 1957a Onderzoekingen over brakwaterrotatorien. I. Assenede. (Biol. Jaarb. 195, 89-131, 11 tab.) * Ridder M. De 1957b Onderzoekingen over brakwaterrotatorien. II. Het Zwin to Knokke. (Natuurw. Tijdschr. 39, 109-126, pl I.) External links * Superclasses (biology) {{rotifer-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rotifer
The rotifers (, from Latin 'wheel' and 'bearing'), sometimes called wheel animals or wheel animalcules, make up a phylum (Rotifera ) of microscopic and near-microscopic Coelom#Pseudocoelomates, pseudocoelomate animals. They were first described by John Harris (writer), Rev. John Harris in 1696, and other forms were described by Antonie van Leeuwenhoek in 1703. Most rotifers are around long (although their size can range from to over ), and are common in freshwater environments throughout the world with a few Seawater, saltwater species. Some rotifers are free swimming and truly planktonic, others move by inchworming along a substrate, and some are Sessility (zoology), sessile, living inside tubes or gelatinous holdfast (biology), holdfasts that are attached to a substrate. About 25 species are colonial (e.g., ''Sinantherina semibullata''), either sessile or planktonic. Rotifers are an important part of the freshwater zooplankton, being a major foodsource and with many specie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monogononta
Monogononta is a class of rotifers, found mostly in freshwater but also in soil and marine environments. They include both free-swimming and Sessility (zoology), sessile forms. Monogononts generally have a reduced Rotifer#Anatomy, corona, and each individual has a single gonad, which gives the group its name. Males are generally smaller than females, and are produced only during certain times of the year, with females otherwise reproducing through parthenogenesis. Their wikt:mastax, mastax is not designed for grinding. They produce mictic and amictic eggs. The class contains 1,570 species. Females are always diploid, and males are haploid. Diploid females produce two types of eggs. One type give rise to new females like themselves, and another that give rise to females that only produce haploid eggs. These will develop into males. When males, through hypodermic impregnation, inject sperm into the body cavity of females carrying a haploid egg, the fertilized egg will develop in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pulchritia Dorsicornuta
''Pulchritia'' is a monotypic genus of rotifers The rotifers (, from Latin 'wheel' and 'bearing'), sometimes called wheel animals or wheel animalcules, make up a phylum (Rotifera ) of microscopic and near-microscopic pseudocoelomate animals. They were first described by Rev. John Harris ... belonging to the family Trichotriidae. The only species is ''Pulchritia dorsicornuta''. References Rotifers {{rotifer-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
