|
Paratrichodorus
''Paratrichodorus'' is a genus of terrestrial root feeding (stubby-root) nematodes in the Trichodoridae Family (biology), family (trichorids), being one of five genera.Order Triplochida: Paratrichodorus Nemaplex: Nematode-Plant Expert Information System. University of California, Davis. Version October 9, 2012. They are economically important plant parasites and virus vectors. The females are didelphic (two genital tracts), and are distributed worldwide. Taxonomy Historically, ''Trichodorus'' formed the only genus in the Trichodoridae family. Then ''Trichodorus'' was split into two genera in 1974 by Siddiqi, ''Trichodorus'' and ''Paratrichodorus''. The genus, which is the second largest in the family consists of 34 species.[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paratrichodorus Pachydermus
''Paratrichodorus'' is a genus of terrestrial root feeding (stubby-root) nematodes in the Trichodoridae family (trichorids), being one of five genera.Order Triplochida: Paratrichodorus Nemaplex: Nematode-Plant Expert Information System. University of California, Davis. Version October 9, 2012. They are economically important plant parasites and virus vectors. The females are didelphic (two genital tracts), and are distributed worldwide. Taxonomy Historically, '''' formed the only genus in the famil ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paratrichodorus Minor
''Paratrichodorus minor'' is a species of nematode in the family Trichodoridae, the stubby-root nematodes.Crow, W. T''Paratrichodorus minor''.EENY-339. University of Florida, IFAS. 2004. It occurs in tropical and subtropical regions of the world. It damages plants by feeding on the roots and it is a vector of plant viruses. It is a pest of some agricultural crops. Like other stubby-root nematodes, this species is microscopic, reaching up to 0.71 millimeters in length.''Paratrichodorus minor''. Nemaplex. University of California, Davis. Its body is rounded at both ends. It has an onchiostyle, a curved, solid stylet which it uses to puncture plant roots. It stabs the plant tissue rapidly, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichodoridae
Trichodoridae (stubby-root nematodes, trichodorids) is a Family (biology), family of terrestrial root feeding nematodes, being one of two that constitute suborder Triplonchida.Phylum Nematoda: Triplochida Nematode Classification. Department of Nematology. University of California, Riverside. Nemaplex: Nematode-Plant Expert Information System. University of California, Davis. Version October 9, 2012. They are economically important plant parasites and virus vectors. Taxonomy The first trichodorid was described in 1880 (De Man) as ''Dorylaimus primitivus'', and the type genus, ''Trichodorus'' described in 1913 by Cobb, based on ''Trichodorus obtusus''. |
Trichodorus
''Trichodorus'' is a genus of terrestrial root feeding (stubby-root) nematodes in the Trichodoridae family (trichorids), being one of five genera.Order Triplochida: Paratrichodorus Nemaplex: Nematode-Plant Expert Information System. University of California, Davis. Version October 9, 2012. They are economically important plant parasites and virus vectors. Taxonomy As originally described by Cobb in 1913, ''Trichodorus'' was the only genus in its family. However, in 1974 the genus was split into two genera in 1974 by Siddiqi,SIDDIQI M.R. (1974). Systematics of the genus ''Trichodorus'' Cobb, 1913 (Nematoda: Dorylaimida), with descriptions of three new species. Nematologica, 19 : 259-278. ''Trichodorus'' and '' |
Nematode
The nematodes ( or ; ; ), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum inhabit a broad range of environments. Most species are free-living, feeding on microorganisms, but many are parasitic. Parasitic worms (helminths) are the cause of soil-transmitted helminthiases. They are classified along with arthropods, tardigrades and other moulting animals in the clade Ecdysozoa. Unlike the flatworms, nematodes have a tubular digestive system, with openings at both ends. Like tardigrades, they have a reduced number of Hox genes, but their sister phylum Nematomorpha has kept the ancestral protostome Hox genotype, which shows that the reduction has occurred within the nematode phylum. Nematode species can be difficult to distinguish from one another. Consequently, estimates of the number of nematode species are uncertain. A 2013 survey of animal biodiversity suggested there are over 25,000. Estimates of the total number of extant species are su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family (, : ) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy (biology)
In biology, taxonomy () is the science, scientific study of naming, defining (Circumscription (taxonomy), circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxon, taxa (singular: taxon), and these groups are given a taxonomic rank; groups of a given rank can be aggregated to form a more inclusive group of higher rank, thus creating a taxonomic hierarchy. The principal ranks in modern use are domain (biology), domain, kingdom (biology), kingdom, phylum (''division'' is sometimes used in botany in place of ''phylum''), class (biology), class, order (biology), order, family (biology), family, genus, and species. The Swedish botanist Carl Linnaeus is regarded as the founder of the current system of taxonomy, having developed a ranked system known as Linnaean taxonomy for categorizing organisms. With advances in the theory, data and analytical technology of biological systematics, the Linnaean system has transfo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylogenetic Analysis
In biology, phylogenetics () is the study of the evolutionary history of life using observable characteristics of organisms (or genes), which is known as phylogenetic inference. It infers the relationship among organisms based on empirical data and observed heritable traits of DNA sequences, protein amino acid sequences, and morphology. The results are a phylogenetic tree—a diagram depicting the hypothetical relationships among the organisms, reflecting their inferred evolutionary history. The tips of a phylogenetic tree represent the observed entities, which can be living taxa or fossils. A phylogenetic diagram can be rooted or unrooted. A rooted tree diagram indicates the hypothetical common ancestor of the taxa represented on the tree. An unrooted tree diagram (a network) makes no assumption about directionality of character state transformation, and does not show the origin or "root" of the taxa in question. In addition to their use for inferring phylogenetic patterns a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
