Lumbriculus Genitosetosus

	Lumbriculus Genitosetosus ''Lumbriculus genitosetosus'' was described by Holmquist in 1976 from almost 2,000 individuals collected in Northern Alaska. Initially, Holmquist revived the genus ''Thinodrilus'' (previously established by Smith in 1895 for ''Th. inconstans'') for ''L. genitosetosus'', ''Lumbriculus inconstans'' and '' Lumbriculus ambiguus'' on the basis of the ''Lumbriculus''-species having only one pair of vas deferens and sperm funnels per atrium, whereas the ''Thinodrilus''-species have two (one in the anterior end and one in the posterior); this division is, however, not generally recognised today, even if ''Thinodrilus'' may be a valid subgenus. ''Lumbriculus genitosetosus'', as the name suggests, can be recognised by its modified male genital setae, unique within the Lumbriculidae The Lumbriculidae are a family of microdrile oligochaetes common in freshwater environments, including streams, lakes, marshes, wells and groundwater. They should not be confused with the earthworm family Lu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), 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 taxonomy (biology), 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Lumbriculus Inconstans ''Lumbriculus'' is a genus of oligochaete annelids. Species Species: '' Lumbriculus alexandrovi'' '' Lumbriculus ambiguus'' '' Lumbriculus caribensis'' '' Lumbriculus genitosetosus'' '' Lumbriculus illex'' '' Lumbriculus inconstans'' ''Lumbriculus japonicus'' ''Lumbriculus kolymensis'' '' Lumbriculus lacustris'' '' Lumbriculus mukoensis'' '' Lumbriculus multiatriatus'' '' Lumbriculus olgae'' '' Lumbriculus pellucidus'' '' Lumbriculus sachalinicus'' '' Lumbriculus tetraporophorus'' ''Lumbriculus variegatus ''Lumbriculus variegatus'', also known as the blackworm or California blackworm, is a species of worm inhabiting North America and Europe. It lives in shallow-water marshes, ponds, and swamps, feeding on microorganisms and organic material. The ...'' References Annelid genera Lumbriculidae {{Annelid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Lumbriculus Ambiguus ''Lumbriculus ambiguus'' was described by Holmquist in 1976, based on material collected in northern Alaska. Like '' L. genitosetosus'', ''L. ambiguus'' was initially placed in the genus ''Thinodrilus'' along with '' L. inconstans'', but this genus is generally not recognised today. Its genital characters vary greatly between individuals, but certain features (such as the location of the atria in segment VIII) appear to be constant. References ambiguus {{annelid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Lumbriculus ''Lumbriculus'' is a genus of oligochaete annelids. Species Species: ''Lumbriculus alexandrovi'' ''Lumbriculus ambiguus'' ''Lumbriculus caribensis'' ''Lumbriculus genitosetosus'' ''Lumbriculus illex'' ''Lumbriculus inconstans'' ''Lumbriculus japonicus'' ''Lumbriculus kolymensis'' ''Lumbriculus lacustris'' ''Lumbriculus mukoensis'' ''Lumbriculus multiatriatus'' ''Lumbriculus olgae'' ''Lumbriculus pellucidus'' ''Lumbriculus sachalinicus'' ''Lumbriculus tetraporophorus'' ''Lumbriculus variegatus'' References Lumbriculus, Annelid genera Lumbriculidae {{Annelid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Vas Deferens The vas deferens or ductus deferens is part of the male reproductive system of many vertebrates. The ducts transport sperm from the epididymis to the ejaculatory ducts in anticipation of ejaculation. The vas deferens is a partially coiled tube which exits the abdominal cavity through the inguinal canal. Etymology ''Vas deferens'' is Latin, meaning "carrying-away vessel"; the plural version is ''vasa deferentia''. ''Ductus deferens'' is also Latin, meaning "carrying-away duct"; the plural version is ''ducti deferentes''. Structure There are two vasa deferentia, connecting the left and right epididymis with the seminal vesicles to form the ejaculatory duct in order to move sperm. The (human) vas deferens measures 30–35 cm in length, and 2–3 mm in diameter. The vas deferens is continuous proximally with the tail of the epididymis. The vas deferens exhibits a tortuous, convoluted initial/proximal section (which measures 2–3 cm in length). Distally, it forms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Sperm Funnels Sperm is the male reproductive cell, or gamete, in anisogamous forms of sexual reproduction (forms in which there is a larger, female reproductive cell and a smaller, male one). Animals produce motile sperm with a tail known as a flagellum, which are known as spermatozoa, while some red algae and fungi produce non-motile sperm cells, known as spermatia. Flowering plants contain non-motile sperm inside pollen, while some more basal plants like ferns and some gymnosperms have motile sperm. Sperm cells form during the process known as spermatogenesis, which in amniotes (reptiles and mammals) takes place in the seminiferous tubules of the testes. This process involves the production of several successive sperm cell precursors, starting with spermatogonia, which differentiate into spermatocytes. The spermatocytes then undergo meiosis, reducing their chromosome number by half, which produces spermatids. The spermatids then mature and, in animals, construct a tail, or flagellum, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Lumbriculidae The Lumbriculidae are a family of microdrile oligochaetes common in freshwater environments, including streams, lakes, marshes, wells and groundwater. They should not be confused with the earthworm family Lumbricidae. Many species and genera are highly endemic, mainly in Siberia and the western parts of North America. Lumbriculidae are the only family in the order Lumbriculida. The family contains: ''Bichaeta'' ::'' Bichaeta sanguinea'' ''Cookidrilus'' ::'' Cookidrilus speluncaeus'' '' Eclipidrilus'' :Subgenus ''Eclipidrilus'' ::'' Eclipidrilus frigidus'' ::'' Eclipidrilus asymmetricus'' ::'' Eclipidrilus ithys'' :Subgenus ''Leptodrilus'' ::'' Eclipidrilus fontanus'' ::'' Eclipidrilus lacustris'' :Subgenus ''Premnodrilus'' ::'' Eclipidrilus daneus'' ::'' Eclipidrilus palustris'' :''Incertae sedis'' ::'' Eclipidrils pacificus'' '' Eremidrilus'' ::'' Eremidrilus allegheniensis'' ::'' Eremidrilus coyote'' ::'' Eremidrilus elegans'' ::'' Eremidrilus felini'' ::'' Eremidrilus rit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]