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Pheretima Tschiliensis
''Pheretima'' is a genus of earthworms found mostly in New Guinea and parts of Southeast Asia. Species belonging to the genus Pheretima have a clitellum, which is a band of glandular tissue present on segments 14 to 16. Individuals are hermaphroditic and reproduction can be either sexual or parthenogenetic. Female genital pores lie on the ventral surface of segment 14. A pair of male genital pores is situated ventrally on segment 18. Genital papillae may also be present ventrally. As with all earthworms, development of young is without a larval stage and takes place in cocoons. Pheretima are generally nocturnal, like most earthworms, and have an aversion to light. They come out only at night, and feed and reproduce only at night. Similar to most earthworms, they must keep their body surface wet to respire. They are also called farmer's friend as they help in making the soil porous for easy irrigation. Similar genera include ''Amynthas'', '' Archipheretima'', '' Duplodicodrilus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pheretima Praepinguis
''Pheretima praepinguis'' is a huge earthworm about half meter long of genus Pheretima. ''Pheretima praepinguis'' lives in Mount Emei, Emei mountain, Sichuan Province, China, and is one of the most featured organisms living in the place. It's trivially called "Big Earthworm of Emei"() or "Toudilong" (, literally means "dragon which can go through the earth"). History In 1931, Yi Chen (), a honored Chinese biologist, researched some samples of an earthworm from Mount Emei, Sichuan Province. At that time, he suggested that it should be classified into ''Pheretima tschiliensis''. However, G. E. Gates found out that such earthworm is different with ''Pheretima tschiliensis''. They can be distinguished by the location of the primary spermathecal pores in parietal invaginations. He then named this earthworm after ''Pheretima praepinguis'' in 1935. Although Yi Chen insisted that ''Pheretima praepinguis'' is a synonym of ''Pheretima tschiliensis'' in an article published in 1936, this n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypoxanthine
Hypoxanthine is a naturally occurring purine derivative. It is occasionally found as a constituent of nucleic acids, where it is present in the anticodon of tRNA in the form of its nucleoside inosine. It has a tautomer known as 6-hydroxypurine. Hypoxanthine is a necessary additive in certain cells, bacteria, and parasite cultures as a substrate and nitrogen source. For example, it is commonly a required reagent in malaria parasite cultures, since '' Plasmodium falciparum'' requires a source of hypoxanthine for nucleic acid synthesis and energy metabolism. In August 2011, a report, based on NASA studies with meteorites found on Earth, was published suggesting hypoxanthine and related organic molecules, including the DNA and RNA components adenine and guanine, may have been formed extraterrestrially in outer space. The '' Pheretima aspergillum'' worm, used in Chinese medicine preparations, contains hypoxanthine. Reactions It is one of the products of the action of xanthine oxi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pithemera
''Pithemera'' is a genus of annelids belonging to the family Megascolecidae The Megascolecidae is a taxonomic family of earthworms which is native to Madagascar, Australia, New Zealand and both South East Asia and North America. All species of Megascolecidae belong to the Clitellata class. Megascolecidae are a large fam .... The species of this genus are found in Southeastern Asia. Species: *'' Pithemera altaresi'' *'' Pithemera donvictorianoi'' *'' Pithemera duhuani'' References {{Taxonbar, from=Q41157171 Annelids ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metaphire
''Metaphire'' is a genus of annelids belonging to the family Megascolecidae. The species of this genus are found in Southeastern Asia. Species: *''Metaphire acincta'' *''Metaphire bifoliolare'' *''Metaphire biforatum ''Metaphire'' is a genus of annelids belonging to the family Megascolecidae The Megascolecidae is a taxonomic family of earthworms which is native to Madagascar, Australia, New Zealand and both South East Asia and North America. All species o ...'' References {{Taxonbar, from=Q21227302 Annelids ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amynthas
''Amynthas'' is a genus of earthworms in the family Megascolecidae. They are known as jumping worms, snake worms, or crazy worms because of their erratic thrashing behaviour when disturbed. The genus is native to East Asia, but they are invasive in many areas of the United States. They are a matter of concern in many states, as they disrupt the native forest ecology by affecting soil structure and chemistry. Appearance ''Amynthas'' species can be differentiated from other earthworms by their clitellum, which is pale, annular, is close to the head, and lies flat against the body.''Wisconsin DNR Forest Health.''Jumping Worms (''Amynthas spp.'') Fact Sheet. Updated April 2015. Accessed Dec 22 2022. They vary in size between . Life cycle ''Amynthas'' species' faster reproduction rate, and their ability to reproduce asexually (parthenogenesis) has contributed to their spread into the United States. The worms reach maturity in 60 days, which allows them to have two hatches per year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. '' Panthera leo'' (lion) and '' Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. phylogenetic analysis should c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pupa
A pupa ( la, pupa, "doll"; plural: ''pupae'') is the life stage of some insects undergoing transformation between immature and mature stages. Insects that go through a pupal stage are holometabolous: they go through four distinct stages in their life cycle, the stages thereof being egg, larva, pupa, and imago. The processes of entering and completing the pupal stage are controlled by the insect's hormones, especially juvenile hormone, prothoracicotropic hormone, and ecdysone. The act of becoming a pupa is called pupation, and the act of emerging from the pupal case is called eclosion or emergence. The pupae of different groups of insects have different names such as ''chrysalis'' for the pupae of butterflies and ''tumbler'' for those of the mosquito family. Pupae may further be enclosed in other structures such as cocoons, nests, or shells. Position in life cycle The pupal stage follows the larval stage and precedes adulthood ('' imago'') in insects with complete metamo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
