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Chorthippus Jutlandica
''Chorthippus jutlandica'', the Jutland bow-winged grasshopper, is a species of grasshopper in the subfamily Gomphocerinae. It is endemic to sparsely vegetated coastal sand dunes in an area covering only between Blåvandshuk and Hvide Sande Hvide Sande is a small town in the middle of the Holmsland Dunes and placed around the artificial canal which connects Ringkøbing Fjord to the North Sea, in the western part of Central Denmark Region, formerly (until 1 January 2007) Ringkjøbing ... in western Jutland, Denmark, but it is common (often the most common grasshopper species in its range and habitat) and not considered to be under any threat. Unusual for a very well-surveyed small country, the species was only scientifically described in 2003, having long been confused with its similar relatives, especially '' C. biguttulus''. It was first noticed in the early 1990s that some grasshoppers in the area had a different song. It is extremely similar to ''C. biguttulus'', '' C. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chorthippus Mollis
''Chorthippus mollis'' is a species belonging to the family Acrididae, subfamily Gomphocerinae. It is found across much of Europe. The species prefers dry-warm locations with sandy ground and open soil, also roadsides, clearcuts and fallow land.Heiko Bellmann: Der Kosmos Heuschreckenführer. Die Arten Mitteleuropas sicher bestimmen. Franckh-Kosmos, Stuttgart 2006, References mollis Mollis is a former municipality in the canton of Glarus in Switzerland. Effective from 1 January 2011, Mollis is part of the municipality of Glarus Nord. History Mollis is first mentioned in 1288. Geography Mollis has an area, , of . Of this ... Orthoptera of Europe Insects described in 1825 {{Gomphocerinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orthoptera Of Europe
Orthoptera () is an order of insects that comprises the grasshoppers, locusts, and crickets, including closely related insects, such as the bush crickets or katydids and wētā. The order is subdivided into two suborders: Caelifera – grasshoppers, locusts, and close relatives; and Ensifera – crickets and close relatives. More than 20,000 species are distributed worldwide. The insects in the order have incomplete metamorphosis, and produce sound (known as a "stridulation") by rubbing their wings against each other or their legs, the wings or legs containing rows of corrugated bumps. The tympanum, or ear, is located in the front tibia in crickets, mole crickets, and bush crickets or katydids, and on the first abdominal segment in the grasshoppers and locusts. These organisms use vibrations to locate other individuals. Grasshoppers and other orthopterans are able to fold their wings (i.e. they are members of Neoptera). Etymology The name is derived from the Greek ὀρθός ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chorthippus
''Chorthippus'' is a large genus of acridid grasshoppers with around 230 described species. The genus may be subdivided into subgenera including: ''Altichorthippus'', ''Chorthippus'' and ''Glyptobothrus'', with other species not placed. Species The ''Orthoptera Species File'' includes: # '' Chorthippus abchasicus'' Ramme, 1939 # '' Chorthippus acroleucus'' (Müller, 1924) (white-tipped grasshopper) # '' Chorthippus aktaci'' Ünal, 2010 # ''Chorthippus albomarginatus'' (De Geer, 1773) (lesser marsh grasshopper) type species (as ''Acrydium albomarginatum'' De Geer = ''C. albomarginatus albomarginatus'') # '' Chorthippus albonemus'' Zheng & Tu, 1964 # '' Chorthippus almoranus'' Uvarov, 1942 # '' Chorthippus alticola'' Ramme, 1921 (alpine grasshopper) # '' Chorthippus alxaensis'' Zheng, 2000 # '' Chorthippus amplilineatus'' Ma & Guo, 1995 # ''Chorthippus amplimedilocus'' Zheng & Yang, 1997 # '' Chorthippus amplintersitus'' Liu, 1981 # '' Chorthippus angulatus'' Tarbinsky, 1927 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reproductively Isolated
The mechanisms of reproductive isolation are a collection of evolutionary mechanisms, behaviors and physiological processes critical for speciation. They prevent members of different species from producing offspring, or ensure that any offspring are sterile. These barriers maintain the integrity of a species by reducing gene flow between related species.Strickberger, M. 1978. ''Genética''. Omega, Barcelona, España, p.: 874-879. .Futuyma, D. 1998. ''Evolutionary biology'' (3ª edición). Sinauer, Sunderland. The mechanisms of reproductive isolation have been classified in a number of ways. Zoologist Ernst Mayr classified the mechanisms of reproductive isolation in two broad categories: pre-zygotic for those that act before fertilization (or before mating in the case of animals) and post-zygotic for those that act after it.Mayr, E. 1963. ''Animal species and evolution''. Harvard University Press, Cambridge. The mechanisms are genetically controlled and can appear in species whose ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Erlangen–Nuremberg
University of Erlangen–Nuremberg (german: Friedrich-Alexander-Universität Erlangen-Nürnberg, FAU) is a Public University, public research university in the cities of Erlangen and Nuremberg in Bavaria, Germany. The name Friedrich–Alexander comes from the university's first founder Frederick, Margrave of Brandenburg-Bayreuth, Friedrich, Margrave of Brandenburg-Bayreuth, and its benefactor Alexander, Margrave of Brandenburg-Ansbach. FAU is the second largest state university in the state of Bavaria. It has 5 faculties, 24 departments/schools, 25 clinical departments, 21 autonomous departments, 579 professors, 3,457 members of research staff and roughly 14,300 employees. In winter semester 2018/19 around 38,771 students (including 5,096 foreign students) enrolled in the university in 265 fields of study, with about 2/3 studying at the Erlangen campus and the remaining 1/3 at the Nuremberg campus. These statistics put FAU in the list of top 10 largest universities in Germany. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid Speciation
Hybrid speciation is a form of speciation where hybridization between two different species leads to a new species, reproductively isolated from the parent species. Previously, reproductive isolation between two species and their parents was thought to be particularly difficult to achieve, and thus hybrid species were thought to be very rare. With DNA analysis becoming more accessible in the 1990s, hybrid speciation has been shown to be a somewhat common phenomenon, particularly in plants. In botanical nomenclature, a hybrid species is also called a nothospecies. Hybrid species are by their nature polyphyletic. Ecology A hybrid may occasionally be better fitted to the local environment than the parental lineage, and as such, natural selection may favor these individuals. If reproductive isolation is subsequently achieved, a separate species may arise. Reproductive isolation may be genetic, ecological, behavioral, spatial, or a combination of these. If reproductive isolation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stridulation
Stridulation is the act of producing sound by rubbing together certain body parts. This behavior is mostly associated with insects, but other animals are known to do this as well, such as a number of species of fish, snakes and spiders. The mechanism is typically that of one structure with a well-defined lip, ridge, or nodules (the "scraper" or ''plectrum'') being moved across a finely-ridged surface (the "file" or ''stridulitrum''—sometimes called the ''pars stridens'') or vice versa, and vibrating as it does so, like the dragging of a phonograph needle across a vinyl record. Sometimes it is the structure bearing the file which resonates to produce the sound, but in other cases it is the structure bearing the scraper, with both variants possible in related groups. Common onomatopoeic words for the sounds produced by stridulation include ''chirp'' and ''chirrup''. Arthropod stridulation Insects and other arthropods stridulate by rubbing together two parts of the body. These a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insect Wing
Insect wings are adult outgrowths of the insect exoskeleton that enable insects to fly. They are found on the second and third thoracic segments (the mesothorax and metathorax), and the two pairs are often referred to as the forewings and hindwings, respectively, though a few insects lack hindwings, even rudiments. The wings are strengthened by a number of longitudinal veins, which often have cross-connections that form closed "cells" in the membrane (extreme examples include the dragonflies and lacewings). The patterns resulting from the fusion and cross-connection of the wing veins are often diagnostic for different evolutionary lineages and can be used for identification to the family or even genus level in many orders of insects. Physically, some insects move their flight muscles directly, others indirectly. In insects with direct flight, the wing muscles directly attach to the wing base, so that a small downward movement of the wing base lifts the wing itself upward. Those i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chorthippus Brunneus
''Chorthippus brunneus'', also known as the common field grasshopper, is a species of grasshopper of the subfamily Gomphocerinae. It was first described by Thunberg in 1815. It is also known as ''Gryllus brunneus'', although this name has not been adopted by the IUCN. The IUCN lists ''C. brunneus'' as Least Concern. Appearance ''C. brunneus'' are predominantly brown. However, they show a large variation in colour and can also be green, black, purple, or white. Wing patterns vary between individuals and can be mottled, striped, striped-mottled, or plain. Both green and purple grasshoppers tend to have plain forewing patterns while black grasshoppers primarily have mottled forewing patterns. Brown grasshoppers do not consistently have the same forewing pattern instead they have variable forewing patterns. At least two loci are responsible for pronotum color in ''C. brunneus''. Green alleles are dominant to all other colors while brown alleles are recessive to all other colors. W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grasshopper
Grasshoppers are a group of insects belonging to the suborder Caelifera. They are among what is possibly the most ancient living group of chewing herbivorous insects, dating back to the early Triassic around 250 million years ago. Grasshoppers are typically ground-dwelling insects with powerful hind legs which allow them to escape from threats by leaping vigorously. As hemimetabolous insects, they do not undergo complete metamorphosis; they hatch from an egg into a nymph or "hopper" which undergoes five moults, becoming more similar to the adult insect at each developmental stage. The grasshopper hears through the tympanal organ which can be found in the first segment of the abdomen attached to the thorax; while its sense of vision is in the compound eyes, the change in light intensity is perceived in the simple eyes (ocelli). At high population densities and under certain environmental conditions, some grasshopper species can change color and behavior and form swarms. Under ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chorthippus Biguttulus
''Chorthippus biguttulus'', the bow-winged grasshopper, is one of the most common species of grasshopper Grasshoppers are a group of insects belonging to the suborder Caelifera. They are among what is possibly the most ancient living group of chewing herbivorous insects, dating back to the early Triassic around 250 million years ago. Grasshopp ... found in the dry grassland of northern and central Europe. It is part of a group of species (''biguttulus''-group) that are very difficult to identify morphologically. ''Chorthippus biguttulus'' was previously classified (with '' C. brunneus'' and '' C. mollis'') as a single species ''Stauroderus variabilis''. The three species were distinguished using song characteristics. Distribution The range of the bow-winged grasshopper extends from the Finland and Scandinavia in the north to the Alps and Pyrenees in the south, and goes well into Asia including Japan. Physical appearance Females grow to approximately and are large ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
