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Mattesia
''Mattesia'' is a genus of parasitic alveolates of the phylum Apicomplexa. Species in this genus infect insects ('' Coleoptera'', '' Hymenoptera'', '' Lepidoptera'' and '' Siphonaptera''). Taxonomy The genus was created in 1930 by Naville. There are eight recognised species in this genus. The type species is ''Mattesia geminata''. Description The species in this genus are spread by the orofaecal route. They infect the fat bodies of species of '' Coleoptera'', '' Hymenoptera'', '' Lepidoptera'' and '' Siphonaptera'', the hypodermis of species of '' Hymenoptera'' and the Malpighian tubules of species of ''Lepidoptera'' and ''Siphonaptera'' as well as intestine of one species of ''Lepidoptera''. The sporozoites are elongated and measure ~. They escape from oocyst while in gut lumen when polar plugs dissolve. Flexing by the sporozoites generates motility. This permits them to penetrate the gut wall and migrate to the body fat where they enter cells of the adipose tissue. An ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mattesia Geminata
''Mattesia'' is a genus of parasitic alveolates of the phylum Apicomplexa. Species in this genus infect insects (''Coleoptera'', ''Hymenoptera'', ''Lepidoptera'' and ''Siphonaptera''). Taxonomy The genus was created in 1930 by Naville. There are eight recognised species in this genus. The type species is ''Mattesia geminata''. Description The species in this genus are spread by the orofaecal route. They infect the fat bodies of species of ''Coleoptera'', ''Hymenoptera'', ''Lepidoptera'' and ''Siphonaptera'', the hypodermis of species of ''Hymenoptera'' and the Malpighian tubules of species of ''Lepidoptera'' and ''Siphonaptera'' as well as intestine of one species of ''Lepidoptera''. The sporozoites are elongated and measure ~. They escape from oocyst while in gut lumen when polar plugs dissolve. Flexing by the sporozoites generates motility. This permits them to penetrate the gut wall and migrate to the body fat where they enter cells of the adipose tissue. An apical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lipotrophidae
The Lipotrophidae are a family of parasitic alveolates in the phylum Apicomplexa. Species in this family infect insects ( Diptera, Lepidoptera, Coleoptera and Hymenoptera). History This family was created by Grasse in 1953. Taxonomy Six genera are currently recognised in this family. Lifecycle Merogony generally occurs by budding from surface of meront to form uniformly sized merozoites. The gametes are similar ( isogametes) and fuse to form navicular oocysts which have pronounced polar thickenings. The oocysts contain eight (rarely four) sporozoite Apicomplexans, a group of intracellular parasites, have life cycle stages that allow them to survive the wide variety of environments they are exposed to during their complex life cycle. Each stage in the life cycle of an apicomplexan organism is ...s. References Apicomplexa families Parasites of insects {{Apicomplexa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypodermis
The subcutaneous tissue (), also called the hypodermis, hypoderm (), subcutis, superficial fascia, is the lowermost layer of the integumentary system in vertebrates. The types of cells found in the layer are fibroblasts, adipose cells, and macrophages. The subcutaneous tissue is derived from the mesoderm, but unlike the dermis, it is not derived from the mesoderm's dermatome region. It consists primarily of loose connective tissue, and contains larger blood vessels and nerves than those found in the dermis. It is a major site of fat storage in the body. In arthropods, a hypodermis can refer to an epidermal layer of cells that secretes the chitinous cuticle. The term also refers to a layer of cells lying immediately below the epidermis of plants. Structure * Fibrous bands anchoring the skin to the deep fascia * Collagen and elastin fibers attaching it to the dermis * Fat is absent from the eyelids, clitoris, penis, much of pinna, and scrotum * Blood vessels on route to the dermi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malpighian Tubule
The Malpighian tubule system is a type of excretory and osmoregulatory system found in some insects, myriapods, arachnids and tardigrades. The system consists of branching tubules extending from the alimentary canal that absorbs solutes, water, and wastes from the surrounding hemolymph. The wastes then are released from the organism in the form of solid nitrogenous compounds and calcium oxalate. The system is named after Marcello Malpighi, a seventeenth-century anatomist. Structure Malpighian tubules are slender tubes normally found in the posterior regions of arthropod alimentary canals. Each tubule consists of a single layer of cells that is closed off at the distal end with the proximal end joining the alimentary canal at the junction between the midgut and hindgut. Most tubules are normally highly convoluted. The number of tubules varies between species although most occur in multiples of two. Tubules are usually bathed in hemolymph and are in proximity to fat body tis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
