|
Life Stages Of Mites
Mites start as an egg and then may pass through up to six instars: prelarva, larva, protoNymph (biology), nymph, deutonymph, tritonymph, and adult. These developmental stages may look different or may be omitted depending on the mite group. All mites have an adult stage; the female is the dispersal stage in some Mesostigmata and Prostigmata. Deutonymphs may also be the dispersal stage in Mesostigmata and Astigmata. The deutonymph is unspecialized or slightly specialized in Mesostigmata. In Astigmata, the larva, protonymph, tritonymph, and adult are usually feeding Ontogeny, ontogenetic stages, though exceptions occur, while the deutonymph serves for dispersal or survival in severe conditions, lacks mouthparts, and cannot feed (though non-oral feeding is possible in several taxa). Deutonymphs have many morphological specializations for Phoresis, phoresy, and they are strikingly different from other life stages. Identification {{wide image, Ontogeny Chaetodactylus krombeini.jpg, cen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mite
Mites are small arachnids (eight-legged arthropods) of two large orders, the Acariformes and the Parasitiformes, which were historically grouped together in the subclass Acari. However, most recent genetic analyses do not recover the two as each other's closest relative within Arachnida, rendering the group invalid as a clade. Most mites are tiny, less than in length, and have a simple, unsegmented body plan. The small size of most species makes them easily overlooked; some species live in water, many live in soil as decomposers, others live on plants, sometimes creating galls, while others are Predation, predators or Parasitism, parasites. This last type includes the commercially destructive ''Varroa'' parasite of honey bees, as well as scabies mites of humans. Most species are harmless to humans, but a few are associated with allergies or may transmit diseases. The scientific discipline devoted to the study of mites is called acarology. Evolution and taxonomy Mites are not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ovipositor
The ovipositor is a tube-like organ used by some animals, especially insects, for the laying of eggs. In insects, an ovipositor consists of a maximum of three pairs of appendages. The details and morphology of the ovipositor vary, but typically its form is adapted to functions such as preparing a place for the egg, transmitting the egg, and then placing it properly. For most insects, the organ is used merely to attach the egg to some surface, but for many parasitic species (primarily in wasps and other Hymenoptera), it is a piercing organ as well. Some ovipositors only retract partly when not in use, and the basal part that sticks out is known as the scape, or more specifically oviscape, the word ''scape'' deriving from the Latin word , meaning "stalk" or "shaft". In insects Grasshoppers use their ovipositors to force a burrow into the earth to receive the eggs. Cicadas pierce the wood of twigs with their ovipositors to insert the eggs. Sawflies slit the tissues of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genital Papilla
The genital papilla is an anatomical feature of the external genitalia of some animals. In mammals In mammals, the genital papilla is a part of the vulva not present in humans, which appears as a small, fleshy flab of tissue. The papilla covers the opening of the vagina.Laboratory Manual for General Biology 5th Edition In fish The genital papilla (urogenital/genital pore) is a small, fleshy tube behind the anus present in most teleost Teleostei (; Ancient Greek, Greek ''teleios'' "complete" + ''osteon'' "bone"), members of which are known as teleosts (), is, by far, the largest group of ray-finned fishes (class Actinopterygii), with 96% of all neontology, extant species of f ... fish, from which the sperm or eggs are released; the sex of a fish often can be determined by the shape of its papilla. References Mammal anatomy Mammal reproductive system Fish anatomy Sex organs {{arthropod-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acarus
''Acarus'' is a genus of mites in the family Acaridae. Species * ''Acarus ananas'' (Tryon, 1898) * ''Acarus beschkovi'' (Mitov, 1994) * ''Acarus bomiensis'' Wang, 1982 * ''Acarus calcarabellus'' (Griffiths, 1965) * ''Acarus chaetoxysilos'' Griffiths, 1970 * ''Acarus ebrius'' Ashfaq, Akhtar & Chaudhri, 1986 * ''Acarus farinae'' DeGeer, 1778 * ''Acarus farris'' (Oudemans, 1905) * ''Acarus fengxianensis'' Wang, 1985 * ''Acarus gracilis'' Hughes, 1957 * ''Acarus griffithsi'' Ranganath & Channa Basavanna, in Ranganath, Channa Basavanna & Krishna-Rao 1981 * ''Acarus immobilis'' Griffiths, 1964 * ''Acarus inaequalis'' (Banks, 1916) * ''Acarus lushanensis'' Jiang, 1992 * ''Acarus monopsyllus'' Fain & Schwan, 1984 * ''Acarus nidicolus'' Griffiths, 1970 * ''Acarus queenslandiae'' (Canestrini, 1884) * ''Acarus rhombeus'' Koch & Berendt, 1854 * ''Acarus sentus'' Ashfaq, Akhtar & Chaudhri, 1986 * ''Flour mite, Acarus siro'' Carl Linnaeus, Linnaeus, 10th edition of Systema Naturae, 1758 * ''Aca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glycyphagus
''Glycyphagus'' is a genus of Astigmatina in the family Glycyphagidae. Description In adults of ''Glycyphagus'', the prodorsum lacks external vertical setae ''ve''. The internal vertical setae ''vi'' are long and barbed, and located posterior to the anterior margin of the propodosoma. The scapular setae ''si'' and ''se'' are arranged in a trapezoid or rectangle shape. In some species, there is a prodorsal sclerotization called a crista metopica. Some of the dorsal setae are long and heavily barbed. On the ventral side of the body, the subcapitulum has a distinct pattern of ventral ridges, and near the posterior margin of the body is the anus. The tibiae of the first two leg pairs have two ventral setae each. The tarsal claws are simple and small. Members of subgenus ''Lepidoglyphus'' have subtarsal scales on the legs. Females usually have a short external copulatory tube at the posterior end of the body. Males lack paranal suckers or tarsal suckers on the fourth leg pair. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chaetodactylus
''Chaetodactylus'' is a genus of parasitic mite primarily associated with solitary bees with over 20 species. These mites usually kill young bee larvae and feed on provisioned pollen and nectar. In nests with partitions (''Osmia''), bees that develop in the innermost cells chew their way out of the nest, and phoretic deutonymphs from the opened cells may attach to them. The mites in the innermost cell may die because of their inability to break through the partition. In nests without partitions (''Lithurgus''), some young bees may complete development and transform to adults that disperse the mites. In colonies of ''Osmia cornifrons'' managed for pollination of blueberries in the US, '' Ch. krombeini'' phoretic deutonymphs could disperse from a nest to nearby nests by walking through nest entrances and holes made by parasitic wasps. Cross-nest dispersal via blueberry flowers visited by multiple individuals of '' O. cornifrons'' was proven to be negligible. Life cycle Feeding ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyemotidae
Pyemotidae is a family of mostly parasitic mites that feed on the larvae and other developmental stages of various insects but some species are herbivorous or fungivorous. Characteristics Members of this family are elongated, cylindrical mites with a large gap between the front two pairs of legs and the hind two pairs. The chelicerae (mouthparts) are needle-like. In females the body behind the posterior limbs becomes much enlarged when eggs are being carried. Distribution Members of this family have a widespread distribution and are found in most parts of the world. Ecology The adult female mites are mostly parasitic on insects. Their host range includes many holometabolous insects such as honeybees, bark-boring beetles, moths and stored product pests. They parasitise various development stages of their host species but mostly it is the larvae which are attacked. They pierce the host with their chelicerae and suck out the haemolymph. The female starts to breed after feeding on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tarsonemidae
Tarsonemidae is a family of mites, also called thread-footed mites or white mites. Only a limited number of tarsonemid genera ('' Steneotarsonemus'', '' Polyphagotarsonemus'', '' Phytonemus'', '' Floridotarsonemus'' and '' Tarsonemus'') are known to feed on higher plants while most species in this family feed on the thin-walled mycelia of fungi or possibly algal bodies. Even among the plant-feeding tarsonemid mites, most are confined to areas of new growth where cell walls are thin and therefore easily pierced. However two species (the "broad mite" '' Polyphagotarsonemus latus'' and the "cyclamen mite" '' Steneotarsonemus pallidus'') are able to feed on older leaves because of their ability to inject toxins during feeding (presumably of salivary gland origin) causing an increase of thin walled cells surrounding feeding sites. This proliferation of new growth often results in leaves that appear stunted, puckered and twisted. Some Tarsonemidae are associated with insects. For exam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trombidiformes
Trombidiformes is a large, diverse order of mites. Taxonomy In 1998, Trombidiformes was divided into the Sphaerolichida and the Prostigmata. The group has few synapomorphies by which it can be defined, unlike the other major group of acariform mites, Sarcoptiformes. Its members include medically important mites (such as ''Demodex'', the chiggers, and scrub-itch mites) and many agriculturally important species, including the spider mites (Tetranychidae). The superfamily Eriophyoidea, traditionally considered members of the Trombidiformes, have been found to be basal mites in genomic analyses, sister to the clade containing Sarcoptiformes and Trombidiformes. The 2004 classification retained the two suborders, comprising around 125 families and more than 22,000 described species. In the 2011 revised classification, the order now contains 151 families, 2235 genera and 25,821 species, and there were another 10 species with 24 species that present only as fossils. These 151 famili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LS 2-Ontogeny Dissecting Microscope Chaetodactylus Krombeini WV BMOC-15-0510-001-rev
ls is a shell command for listing files including special files such as directories. Originally developed for Unix and later codified by POSIX and Single UNIX Specification, it is supported in many operating systems today, including Unix-like variants, Windows (via PowerShell and UnxUtils), EFI, and MSX-DOS (via MSX-DOS2 Tools). The numerical computing environments MATLAB and GNU Octave include an ls command with similar functionality. In other environments, such as DOS, OS/2, and Command Prompt, similar functionality is provided by the dir command. An ls command appeared in the first version of AT&T UNIX, the name inherited from Multics and short for "list". is part of the X/Open Portability Guide since issue 2 of 1987. It was inherited into the first version of POSIX.1 and the Single Unix Specification. Behavior When invoked with no path argument, ls lists the files of the working directory. Otherwise, it includes each specified file and each file of a specified d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Podapolipidae
''Podapolipidae'' is a family of mites. All members of the family Podapolipidae are specialized obligate external (and rarely internal) parasites of various insects, among which at least 20 genera are sub elytral ectoparasites of different beetle families, mainly Carabidae, Chrysomelidae, Coccinellidae, and Scarabaeidae The family Scarabaeidae, as currently defined, consists of over 35,000 species of beetles worldwide; they are often called scarabs or scarab beetles. The classification of this family has undergone significant change. Several groups formerly tre .... These mites are sexually transmitted, i.e. the motile stages of the mite (larvae or adult females) move from one host individual to another during copulation. Parasitisation with these mites can negatively affect host fitness. For example, in some ladybirds, individuals parasitised with '' Coccipolipus'' suffer lower fecundity and egg viability and sometimes reduced longevity. Beyond this, these mites can modify h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Locustacarus Buchneri
''Locustacarus buchneri'' is a parasitic mite that lives in the respiratory air sacs of bumblebee A bumblebee (or bumble bee, bumble-bee, or humble-bee) is any of over 250 species in the genus ''Bombus'', part of Apidae, one of the bee families. This genus is the only Extant taxon, extant group in the tribe Bombini, though a few extinct r ...s. They are relatively host-specific and are found primarily in the subgenus ''Bombus sensu stricto''. Bees infested with the mite have a reduced lifespan in laboratory conditions, and although in one study they foraged at a rate similar to uninfected bees, infected bees showed a greater preference for a single flower type. Prevalence varies, but infection appears to be more common among commercial colonies than wild populations. Among colonies commercially imported from the Netherlands and Belgium to Japan, infestation rates were 20%. In South America, prevalence is very low in native populations. In Canada, there was evidence that co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
