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Aplectana Herediaensis
''Aplectana herediaensis'' is a species of nematodes. It was found in the large intestines of ''Lepidophyma flavimaculatum The yellow-spotted tropical night lizard or yellow-spotted night lizard (''Lepidophyma flavimaculatum'') is a species of night lizard (family Xantusiidae). The species is distributed from central Mexico, through Central America, south to Panama. ...'', and is the third species of this genus to be described in a lizard host. Description They are small, slender nematodes. Females are of a slightly greater length than males. They have a cuticle bearing striations, longitudinal striations from the pharyngeal region to the tip of the tail and transverse striation in the same region. They have narrow lateral alae beginning in the region of the nerve ring and ending on the tail in both sexes. They have a triangular mouth with three lips. Their oesophagus is divided into a short anterior pharyngeal portion, an elongated corpus, a short and narrow isthmus, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematode
The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant- parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments. Less formally, they are categorized as Helminths, but are taxonomically classified along with arthropods, tardigrades and other moulting animals in the clade Ecdysozoa, and unlike flatworms, have tubular digestive systems 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 described to date vary by author and may change rapidly over time. A 2013 survey of animal biodiversity published in the mega ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chromadorea
The Chromadorea are a class of the roundworm phylum, Nematoda. They contain a single subclass (Chromadoria) and several orders. With such a redundant arrangement, the Chromadoria are liable to be divided if the orders are found to form several clades, or abandoned if they are found to constitute a single radiation. Formerly, they were treated as a subclass in the paraphyletic " Adenophorea" assemblage, which has been mostly abandoned by modern authors. It is also suspected that the Chromadorea may not be monophyletic as delimited here; at least the Monhysterida seem to be a distinct and far more ancient lineage than the rest. Members of this class' bodies usually have annules, their amphids elaborate and spiral, and they all have three esophageal glands. They usually live in marine sediments, although they can live elsewhere. They have a more sophisticated pharynx than most roundworms. Members of this class can be identified by the presence of eight conserved signature ind ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhabditia
Subclass Rhabditia is mostly composed of parasitic nematodes (particularly in the Strongylida), though there are some free-living species as well (particularly in the Rhabditida). Phasmids (posterior sensory structures) are well-developed, while amphids (anterior sensory structures) are poorly developed or absent in this group. In an alternate classification system, they are treated as suborder Rhabditina, with the orders listed here being ranked as infraorders. Also, the Diplogasterida, which are sometimes considered a monotypic subclass, are probably better placed in the Rhabditia. On the other hand, the old placement of the Ascaridida in Rhabditia instead of Spiruria seems unwarranted. The Rhabditida contain a number of families which are probably better placed in the Tylenchia; alternatively, the latter group may entirely be merged with the Rhabditia.Tree of Life Web Project (ToL) (2002b)Nematoda Version of 2002-JAN-01. Retrieved 2008-NOV-02.ToL (2002) See also * ''Skrj ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cosmocercidae
The Cosmocercidae are a nematode family in the superfamily Cosmoceroidea. Genera Genera within the family Cosmocercidae include: * '' Cosmocercoides'' Wilkie, 1930 * ''Nemhelix'' Morand & Petter, 1986 - with the only species ''Nemhelix bakeri'' Morand & Petter, 1986 Morand S. (1988). "Cycle évolutif du ''Nemhelix bakeri'' Morand et Petter (Nematoda, Cosmocercidae), parasite de l'appareil génital de l'''Helix aspersa'' Müller (Gastropoda, Helicidae)". ''Canadian Journal of Zoology The ''Canadian Journal of Zoology'' is a peer-reviewed scientific journal that covers zoology. It was established in 1951 as the continuation of '' Canadian Journal of Research, Section D: Zoological Sciences'', and is associated with the Canadian ...'' 66(8): 1796-1802. . * '' Aplectana'', with 42 species, type: '' Aplectana herediaensis'' References External links Nematode families {{Chromadorea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aplectana
''Aplectana'' is a 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 n ... of nematodes. It includes, among other species, Aplectana herediaensis. References Cosmocercidae Rhabditida genera {{Chromadorea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can reproduction, produce Fertility, fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lepidophyma Flavimaculatum
The yellow-spotted tropical night lizard or yellow-spotted night lizard (''Lepidophyma flavimaculatum'') is a species of night lizard (family Xantusiidae). The species is distributed from central Mexico, through Central America, south to Panama. It includes two subspecies. Subspecies Two subspecies are recognized as being valid, including the nominotypical subspecies. *''Lepidophyma flavimaculatum flavimaculatum'' *''Lepidophyma flavimaculatum ophiophthalmum'' Reproduction ''L. flavimaculatum'' reproduces parthenogenetically. The female gives birth to live, fully developed young lizards. Before birth the egg cells are not fertilized. Habitat and ecology ''L. flavimaculatum'' is a secretive, terrestrial and nocturnal lizard of tropical wet and moist forests, at altitudes from sea level to . Mostly found on the ground, it is occasionally found on tree trunks or beneath bark on standing trees. It feeds on small invertebrates. Fiction The yellow-spotted night lizard is sometimes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alae (anatomy)
The alae is a protruding ridge that forms longitudinally on many nematodes. In the ''Caenorhabditis elegans ''Caenorhabditis elegans'' () is a free-living transparent nematode about 1 mm in length that lives in temperate soil environments. It is the type species of its genus. The name is a blend of the Greek ''caeno-'' (recent), ''rhabditis'' (r ...'' nematode they are present in the L1, dauer (an alternative long living larvae stage where the nematode is dormant) and adult stages. The alae are most pronounced during the dauer larval stage and not present in the L2, and L3 ''Caenorhabditis elegans, C. elegans'' stages. The term ‘alae’ is the plural of ala (wing), describing either one of the pair of ridges that forms on a nematode or an individual crease found on an individual ridge. The term ‘ala’ is rarely used in describing the alae and scientific journals use the term ‘alae’ both singularly and in the plural. Structure The alae is formed by the hyp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
