A lighter stripe is visible down the middle of the prosoma; the opisthosoma abdomen is long and narrow and tapered towards the rear end. The female spiders has a dark patch epigyne on the underside of her abdomen that includes the copulatory organs. Male genital openings can be found at the same location, but remain inconspicuous. Patterning and coloration varies due to polymorphism ;    these patterns, which can be caused by hair and pigments, change with the growth of the spider ontogenesis. Male spiders are stronger in contrast than females and look black, especially in comparison to the white nuptial gifts.
Females tend to get paler towards the end of summer; the stripe along the back of the body can be found in all spiders and can be seen as crypsis , a protective measure against predators. The pedipalps in nymphs and females look similar to legs. In males, this structure gets thicker towards the end and is used to store sperm until reproduction bulbus ; the outer chelicerae segment consists of three teeth. They catch their prey during the day and at night and are also active on warm winter days.
Pisaura mirabilis has a palearctic distribution,  and can be found all over Europe; these spiders inhabit the Canary Islands and Madeira , the Asian part of Russia , China and North Africa. The spider develops from a fertilised egg inside a cocoon into an embryo. After inversion, the embryo enters the prelarval stage.
A few hours later, the prelarva moults into a larva. A few fine hairs can be found on their feet. Depending on the temperature, the larvae moult after 4. Once leaving the cocoon through an opening, they live in a protective web made by the mother, where they feed on the leftover yolk from their eggs and drink from water droplets. After about a week, the nymphs start suspending themselves from their own spider silk and start preying on fruit flies ; this usually happens in the sixth or seventh nymphal stage.
Cannibalism does not occur in the first few days, but occurs in later stages; the whole nymphal stage is divided into 12 stages at most. Male spiders become sexually mature in the 9th to 11th stages, females in the 10th to 12th stages. Temperature can influence the development and number of stages, with colder temperatures slowing down the process.
Under good conditions, spiders can complete their nymphal development in fewer than 12 stages;  the duration from prelarval stage to final moult maturity typically lasts days for males stage 10 and days for females stage Adulthood is the period after final moult till death. Females live longer than males, the record being days for females and Depending on habitat, nursery web spiders hibernate once or twice during the nymphal stage; the period of hibernation diapause is spent in ground vegetation under leaves, moss, and stones.
They can be found in garages and houses, as well; some individuals in the south of France have been found under loose bark of the plane tree. The nymphs in stages 6 to 8 start hibernating in November and continue with their development towards the end of February to the beginning of March. Pisaura mirabilis in Western - and Central Europe reach sexual maturity in May, when sperm uptake, the search for females, offering of nuptial gifts, and courtship and mating takes place.
In Northern and Eastern Europe, spiders reach sexual maturity only in June, while in Southern Europe, they become sexually mature in April. Nursery web spiders have a one-year annual cycle in southern Europe, they grow in summer, hibernate in winter, reach adulthood in spring, and reproduce and then die in autumn.
Their offspring are sexually mature in the following spring. Spiders from the north have a two-year cycle, having to go through two hibernations before reaching sexual maturity.
Spiders in Western and Central Europe have a mix of both one- and two-year cycles. Males have a two-month period to reproduce; females three and a half. Males of this species offer a nuptial gift to potential female mates; some Pisaura mirabilis specimens have also been observed to use thanatosis during courtship. Throughout copulation, the male keeps a leg on the gift so as to be ready if she tries to escape with it or attack him.
At this time, the male may feign death — his limbs become straight and he is dragged along with the female while holding on to the gift; when the female stops, the male slowly "resurrects" and continues attempting to mate. Predators of Pisaura mirabilis includes spider wasps , tree frogs , lizards , and song birds during the day, and toads , shrew mice , and bats at night. Other spider species, as well as from the same species cannibalism , consider P. Nursery web spiders are often parasitised by nematodes , sphecoid wasps , and chalcid wasps , as well as other parasitic wasps and Acari ; these parasites infect the spider and its eggs and cocoons, which can lead to destruction of a whole clutch of eggs.
Baculoviridae and Rickettsia species infect nursery web spiders, as well, they most likely enter the gastrointestinal tract via the spiders' prey. Not only can nymphs and adults be infected, but different stages in the cocoon are infected, as well. Spider silk Spider silk is a protein fibre spun by spiders. Spiders use their silk to make webs or other structures, which function as sticky nets to catch other animals, or as nests or cocoons to protect their offspring, or to wrap up prey, they can use their silk to suspend themselves, to float through the air, or to glide away from predators.
Most spiders vary the stickiness of their silk for different uses. In some cases, spiders may use silk as a source of food. While methods have been developed to collect silk from a spider by force, it is difficult to gather silk from many spiders in a small space, in contrast to silkworm "farms".
All spiders produce silks, a single spider can produce up to seven different types of silk for different uses; this is in contrast to insect silks, where an individual only produces one type of silk. Spider silks may be used in many different ecological ways, each with properties to match the silk's function; as spiders have evolved, so has their silks' complexity and diverse uses, for example from primitive tube webs — million years ago to complex orb webs million years ago.
Meeting the specification for all these ecological uses requires different types of silk suited to different broad properties, as either a fibre, a structure of fibres, or a silk-globule. These types include fibres; some types of fibres are used for others for constructing protective structures. Some can absorb energy whereas others transmit vibration efficiently. In a spider, these silk types are produced in different glands; each spider and each type of silk has a set of mechanical properties optimised for their biological function. Most silks, in particular dragline silk, have exceptional mechanical properties, they exhibit a unique combination of high tensile extensibility.
This enables a silk fibre to absorb a large amount of energy before breaking. A frequent mistake made in the mainstream media is to confuse strength and toughness, when comparing silk to other materials. Weight for weight, silk is not as strong as Kevlar. Silk is, tougher than either; the variability of mechanical properties of spider silk fibres may be important and it is related to their degree of molecular alignment. Mechanical properties depend on the ambient conditions, i. A dragline silk's tensile strength is comparable to that of high-grade alloy steel, about half as strong as aramid filaments, such as Twaron or Kevlar.
In , a wood-based nanofiber achieved tensile stiffness eight times greater and with higher tensile strength than spider silk. Consisting of protein, silks are about a sixth of the density of steel; as a result, a strand long enough to circle the Earth would weigh less than grams. The energy density of dragline spider silk is 1. Silks are extremely ductile , with some able to stretch up to five times their relaxed length without breaking; the combination of strength and ductility gives dragline silks a high toughness, which "equals that of commercial polyaramid filaments, which themselves are benchmarks of modern polymer fibre technology".
As occurs in many materials, spider silk fibres undergo a glass transition. Thus, C. Silk fibre is a two-compound pyriform secretion, spun into patterns that are employed to adhere silk threads to various surfaces using a minimum of silk substrate ; the pyriform threads polymerise under ambient conditions, become functional and are usable indefinitely, remaining biodegradable and compatible with numerous other materials in the environment.
The adhesive and durability properties of the attachment disc are controlled by functions within the spinnerets. Some adhesive properties of the silk resemble glue. Many species of spider have different glands to produce silk with different properties for different purposes, including housing, web construction, defence and detaining prey, egg protection, mobility. Different specialised silks have evolved with properties suitable for different uses.
For example, Argiope argentata has five different types of silk, each used for a different purpose: Silks, like many other biomaterials , have a hierarchical structure; the primary structure is its amino acid sequence consisting of. At 17,, square kilometres, Russia is by far or by a considerable margin the largest country in the world by area, covering more than one-eighth of the Earth's inhabited land area, the ninth most populous, with about Russia's capital, Moscow , is one of the largest cities in the world and the second largest city in Europe.
Extending across the entirety of Northern Asia and much of Eastern Europe, Russia spans eleven time zones and incorporates a wide range of environments and landforms. However, Russia recognises two more countries that border it, Abkhazia and South Ossetia , both of which are internationally recognized as parts of Georgia. Founded and ruled by a Varangian warrior elite and their descendants, the medieval state of Rus arose in the 9th century. In it adopted Orthodox Christianity from the Byzantine Empire , beginning the synthesis of Byzantine and Slavic cultures that defined Russian culture for the next millennium.
Rus' disintegrated into a number of smaller states; the Grand Duchy of Moscow reunified the surrounding Russian principalities and achieved independence from the Golden Horde.
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- Meaning of "Wegwespe" in the German dictionary;
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- Synonyms and antonyms of Wegwespe in the German dictionary of synonyms.
By the 18th century, the nation had expanded through conquest and exploration to become the Russian Empire , the third largest empire in history , stretching from Poland on the west to Alaska on the east. Following the Russian Revolution , the Russian Soviet Federative Socialist Republic became the largest and leading constituent of the Union of Soviet Socialist Republics , the world's first constitutionally socialist state; the Soviet Union played a decisive role in the Allied victory in World War II , emerged as a recognized superpower and rival to the United States during the Cold War.
The Soviet era saw some of the most significant technological achievements of the 20th century, including the world's first human-made satellite and the launching of the first humans in space. By the end of , the Soviet Union had the world's second largest economy, largest standing military in the world and the largest stockpile of weapons of mass destruction. Following the dissolution of the Soviet Union in , twelve independent republics emerged from the USSR: Russia, Belarus , Uzbekistan , Azerbaijan, Kyrgyzstan , Tajikistan and the Baltic states regained independence: Estonia, Lithuania , it is governed as a federal semi-presidential republic.
Russia's economy ranks as the twelfth largest by nominal GDP and sixth largest by purchasing power parity in Russia's extensive mineral and energy resources are the largest such reserves in the world, making it one of the leading producers of oil and natural gas globally; the country is one of the five recognized nuclear weapons states and possesses the largest stockpile of weapons of mass destruction.
Russia is a great power as well as a regional power and has been characterised as a potential superpower. In order to distinguish this state from other states derived from it, it is denoted as Kievan Rus' by modern historiography. The name Rus itself comes from the early medieval Rus' people, Swedish merchants and warriors who relocated from across the Baltic Sea and founded a state centered on Novgorod that became Kievan Rus.
The standard way to refer to citizens of Russia is rossiyane in Russian. There are two Russian words which are commonly. Habitat In ecology, a habitat is the type of natural environment in which a particular species of organism lives. It is characterized by both biological features. A species' habitat is those places where it can find food, shelter and mates for reproduction; the physical factors are for example soil, range of temperature, light intensity as well as biotic factors such as the availability of food and the presence or absence of predators.
Every organism has certain habitat needs for the conditions in which it will thrive, but some are tolerant of wide variations while others are specific in their requirements. A habitat is not a geographical area, it can be the interior of a stem, a rotten log, a rock or a clump of moss, for a parasitic organism it is the body of its host, part of the host's body such as the digestive tract, or a single cell within the host's body. Habitat types include polar, temperate and tropical; the terrestrial vegetation type may be forest, grassland , semi-arid or desert.
Fresh water habitats include marshes, rivers and ponds, marine habitats include salt marshes, the coast, the intertidal zone, reefs, the open sea, the sea bed, deep water and submarine vents. Habitats change over time. This may be due to a violent event such as the eruption of a volcano , an earthquake, a tsunami , a wildfire or a change in oceanic currents. Other changes come as a direct result of human activities; the introduction of alien species can have a devastating effect on native wildlife, through increased predation, through competition for resources or through the introduction of pests and diseases to which the native species have no immunity.
Habitat can be defined as the natural environment of an organism, the type of place in which it is natural for it to live and grow, it is similar in meaning to a biotope. The chief environmental factors affecting the distribution of living organisms are temperature, climate, soil type and light intensity, the presence or absence of all the requirements that the organism needs to sustain it.
Speaking, animal communities are reliant on specific types of plant communities.
Some plants and animals are generalists , their habitat requirements are met in a wide range of locations. The small white butterfly for example is found on all the continents of the world apart from Antarctica , its larvae feed on a wide range of Brassicas and various other plant species, it thrives in any open location with diverse plant associations. The large blue butterfly is much more specific in its requirements. Disturbance is important in the creation of biodiverse habitats.
In the absence of disturbance, a climax vegetation cover develops that prevents the establishment of other species. Wildflower meadows are sometimes created by conservationists but most of the flowering plants used are either annuals or biennials and disappear after a few years in the absence of patches of bare ground on which their seedlings can grow. Lightning strikes and toppled trees in tropical forests allow species richness to be maintained as pioneering species move in to fill the gaps created. Coastal habitats can become dominated by kelp until the seabed is disturbed by a storm and the algae swept away, or shifting sediment exposes new areas for colonisation.
Another cause of disturbance is when an area may be overwhelmed by an invasive introduced species, not kept under control by natural enemies in its new habitat. Terrestrial habitat types include forests, grasslands and deserts. Within these broad biomes are more specific habitats with varying climate types, temperature regimes, soils and vegetation types. Many of these habitats grade into each other and each one has its own typical communities of plants and animals.
A habitat may suit a particular species well, but its presence or absence at any particular location depends to some extent on chance, on its dispersal abilities and its efficiency as a coloniser. Freshwater habitats include rivers, lakes, ponds and bogs.
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Although some organisms are found across most of these habitats, the majority have more specific requirements; the water velocity, its temperature and oxygen saturation are important factors, but in river systems, there are fast and slow sections, pools and backwaters which provide a range of habitats. Aquatic plants can be floating, semi-submerged, submerged or grow in permanently or temporarily saturated soils besides bodies of water.
Marginal plants provide important habitat for both invertebrates and vertebrates , submerged plants provide oxygenation of the water, absorb nutrients and play a part in the reduction of pollution. Further variations include rock pools, sand banks, brackish lagoons and pebbly beaches, seagrass beds, all supporting their own flora and fauna; the benth.
Central Europe Central Europe is the region comprising the central part of Europe. It is said to occupy continuous territory that are otherwise conventionally Western Europe , Southern Europe , Eastern Europe ; the concept of Central Europe is based on a common historical and cultural identity. While the region's economy shows high disparities with regard to income, all Central European countries are listed by the Human Development Index as highly developed. The keyword of Western social development after millennium was the spread of liberties and autonomies in Western Europe.
These phenomena appeared in the middle of the 13th century in Central European countries. There were self-governments of towns and parliaments. Before , the industrialization that had developed in Western and Central Europe and the United States did not extend in any significant way to the rest of the world. In Eastern Europe, industrialization lagged far behind. Russia , for example, remained rural and agricultural, its autocratic rulers kept the peasants in serfdom. The concept of Central Europe was known at the beginning of the 19th century, but its real life began in the 20th century and became an object of intensive interest.
However, the first concept mixed science and economy — it was connected with intensively growing German economy and its aspirations to dominate a part of European continent called Mitteleuropa ; the German term denoting Central Europe was so fashionable that other languages started referring to it when indicating territories from Rhine to Vistula , or Dnieper , from the Baltic Sea to the Balkans.
An example of that-time vision of Central Europe may be seen in J. Partsch's book of Another time, the term Central Europe became connected to the German plans of political and cultural domination; the " bible " of the concept was Friedrich Naumann's book Mitteleuropa in which he called for an economic federation to be established after the war. Naumann's idea was that the federation would have at its centre Germany and the Austro-Hungarian Empire but would include all European nations outside the Anglo-French alliance, on one side, Russia, on the other.
The concept failed after the German defeat in the dissolution of Austria -- Hungary; the revival of the idea may be observed during the Hitler era. According to Emmanuel de Martonne , in the Central European countries included: Austria, Germany, Poland and Switzerland ; the author use both Human and Physical Geographical features to define Central Europe, but he doesn't care about the legal development, the social, economic, infrastructural developments in these countries.
The interwar period brought new geopolitical system and economic and political problems, the concept of Central Europe took a different character; the centre of interest was moved to its eastern part — the countries that have appeared on the map of Europe : Czechoslovakia and Poland. Central Europe ceased to be the area of German aspiration to lead or dominate and became a territory of various integration movements aiming at resolving political and national problems of "new" states, being a way to face German and Soviet pressures.
However, the conflict of interests was too big and neither Little Entente nor Intermarium ideas succeeded. The interwar period brought new elements to the concept of Central Europe. Before World War I , it embraced German states, non-German territories being an area of intended German penetration and domination — German leadership position was to be the natural result of economic dominance. After the war, the Eastern part of Central Europe was placed at the centre of the concept. At that time the scientists took an interest in the idea: the International Historical Congress in Brussels in was committed to Central Europe, the Congress continued the discussions.
It was published in Swedish, with a Latin translation printed in a smaller font below the Swedish text. Clerck described in detail 67 species of Swedish spiders, for the first time in a zoological work applied binomial nomenclature as proposed by Carl Linnaeus and used for the first time for botanical names in his work Species Plantarum , which he presented in in the 10th edition of his work Systema Naturae for more than 4, animal species. Svenska Spindlar is the first zoological work to make systematic use of binomial nomenclature, the only pre-Linnaean source to be recognised as a taxonomic authority for such names.
Clerck explained in the last chapter of his work that in contrast to previous authors he used the term "spider" in the strict sense, for animals possessing eight eyes and separated prosoma and opisthosoma , that his concept of this group of animals did not include Opiliones and other groups of arachnids. For all spiders Clerck used a single generic name, to, added a specific name which consisted of only one word; each species was presented in the Swedish text with their Latin scientific names, followed by detailed information containing the exact dates when he had found the animals, a detailed description of eyes and body.
The differences between the sexes were described; each species was illustrated in impressively accurate drawings printed on coloured copper plates which were bound at the end of the volume. Because of the exceptionally thorough treatment of the spider species, the scientific names proposed by Clerck had traditionally been recognized by arachnologists as binomial and available.
Only after was this recognized in the Code; this means that in case of doubt the spelling of a spider name as from Clerck's work has priority over that proposed by Linnaeus in , that Clerck's spiders were the first animals in modern zoology to have obtained an available scientific name in the Linnean system. In the late s, Clerck's work was accepted as the first application of binomial nomenclature to spiders. In the ICZN Commission ruled that the date should be used for Clerck's names, this date was repeated to apply to Clerck's names in the 4th edition of the International Code of Zoological Nomenclature in In a complete binomial name with author and year, the year corresponds to the year of publication of the original source.
From the beginning on the new provision in the Code has been misunderstood by many researchers who believed that by setting the date for Clerck's work to and the date for Systema Naturae to 1 January , the priority was changed. In , a case was brought before the Commission because the researchers were no longer sure whether the generic name should be Araneus Clerck or Aranea Linnaeus. In their judgement the year for Clerck's Svenska Spindlar could be interpreted in a way that the Linnean work from 1 January should have priority. In the Commission saw itself forced to repeat once more, although this was explicit in the Code's Article 3.
Svenska Spindlar lists the following 67 species of spider. Spider web A spider web, spider's web, or cobweb is a structure created by a spider out of proteinaceous spider silk extruded from its spinnerets meant to catch its prey. Spider webs have existed for at least million years, as witnessed in a rare find of Early Cretaceous amber from Sussex , southern England. Many spiders build webs to catch insects to eat. However, not all spiders catch their prey in webs, some do not build webs at all.
However, the word "cobweb" is used by biologists to describe the tangled three-dimensional web of some spiders of the Theridiidae family. While this large family is known as the cobweb spiders, they have a huge range of web architectures; when spiders moved from the water to the land in the Early Devonian period, they started making silk to protect their bodies and their eggs.
Spiders started using silk for hunting purposes, first as guide lines and signal lines as ground or bush webs, as the aerial webs that are familiar today. Spiders produce silk from their spinneret glands located at the tip of their abdomen. Each gland produces a thread for a special purpose — for example a trailed safety line, sticky silk for trapping prey or fine silk for wrapping it. Spiders use different gland types to produce different silks, some spiders are capable of producing up to eight different silks during their lifetime. Most spiders have three pairs of spinnerets, each having its own function — there are spiders with just one pair and others with as many as four pairs.
Webs allow a spider to catch prey without having to expend energy by running it down, thus it is an efficient method of gathering food.
WEGWESPE - Definition and synonyms of Wegwespe in the German dictionary
However, constructing the web is in itself an energetically costly process because of the large amount of protein required, in the form of silk. In addition, after a time the silk will lose its stickiness and thus become inefficient at capturing prey, it is common for spiders to eat their own web daily to recoup some of the energy used in spinning.
The silk proteins are thus recycled. The tensile strength of spider silk is greater than the same weight of steel and has much greater elasticity , its microstructure is under investigation for potential applications in industry, including bullet-proof vests and artificial tendons. Researchers have used genetically modified mammals to produce the proteins needed to make this material. There are a few types of spider webs found in the wild, many spiders are classified by the webs they weave. Different types of spider webs include: Spiral orb webs, associated with the family Araneidae , as well as Tetragnathidae and Uloboridae Tangle webs or cobwebs, associated with the family Theridiidae Funnel webs, with associations divided into primitive and modern Tubular webs, which run up the bases of trees or along the ground Sheet websSeveral different types of silk may be used in web construction, including a "sticky" capture silk and "fluffy" capture silk, depending on the type of spider.
Webs may be at any angle in between. It is hypothesized. As insects are spiders' main prey, it is that they would impose strong selectional forces on the foraging behavior of spiders. Most found in the sheet-web spider families , some webs will have loose, irregular tangles of silk above them; these tangled obstacle courses serve to disorient and knock down flying insects, making them more vulnerable to being trapped on the web below. They may help to protect the spider from predators such as birds and wasps. Most orb weavers construct webs in a vertical plane, although there are exceptions, such as Uloborus diversus, which builds a horizontal web.
During the process of making an orb web, the spider will use its own body for measurements. Many webs span gaps between objects; this is done by first producing a fine adhesive thread to drift on a faint breeze across a gap. When it sticks to a surface at the far end, the spider feels the change in the vibration; the spider reels in and tightens the first strand carefully walks along it and strengthens it with a second thread.
This process is repeated. After strengthening the first thread, the spider continues to make a Y-shaped netting; the first three radials of the web are now constructed. More radials are added, making sure that the distance between each radial and the next is small enough to cross; this means that the number of radials in a web directly depends on the size of the spider plus the size of the web.
It is common for a web to be about 20 times the size of the spider building it. After the radials are complete, the spider fortifies the center of the web with about five circular threads, it makes a spiral of non-sticky spaced threads to enable it to move around its own web during construction, working from the inside outward. Beginning from the outside and moving inward, the spider methodically replaces this spiral with a more spaced one made of adhesive threads, it uses the initial radiating lines as well as the non-sticky spirals as guide lines.
The spaces between each spiral and the next are directly proportional to the distance from the tip of its back legs to its spinners. France France the French Republic, is a country whose territory consists of metropolitan France in Western Europe and several overseas regions and territories. The overseas territories include French Guiana in South America and several islands in the Atlantic and Indian oceans; the country's 18 integral regions span a combined area of , square kilometres and a total population of France, a sovereign state, is a unitary semi-presidential republic with its capital in Paris , the country's largest city and main cultural and commercial centre.
Depending on habitat, nursery web spiders hibernate once or twice during the nymphal stage. The period of hibernation diapause is spent in ground vegetation under leaves, moss, and stones. They can be found in garages and houses, as well. Some individuals in the south of France have been found under loose bark of the plane tree. The nymphs in stages 6 to 8 start hibernating in November and continue with their development towards the end of February to the beginning of March. Pisaura mirabilis in Western - and Central Europe reach sexual maturity in May, when sperm uptake, the search for females, offering of nuptial gifts, and courtship and mating takes place.
In Northern and Eastern Europe, spiders reach sexual maturity only in June, while in Southern Europe, they become sexually mature in April. Nursery web spiders have a one-year annual cycle in southern Europe. They grow in summer, hibernate in winter, reach adulthood in spring, and reproduce and then die in autumn. Their offspring are sexually mature in the following spring. Spiders from the north have a two-year cycle, having to go through two hibernations before reaching sexual maturity. Spiders in Western and Central Europe have a mix of both one- and two-year cycles.
Males have a two-month period to reproduce; females three and a half. Males of this species offer a nuptial gift to potential female mates. Some Pisaura mirabilis specimens have also been observed to use thanatosis during courtship. Throughout copulation, the male keeps a leg on the gift so as to be ready if she tries to escape with it or attack him. At this time, the male may feign death — his limbs become straight and he is dragged along with the female while holding on to the gift.
When the female stops, the male slowly "resurrects" and continues attempting to mate. Predators of Pisaura mirabilis includes spider wasps , tree frogs , lizards , and song birds during the day, and toads , shrew mice , and bats at night. Other spider species, as well as from the same species cannibalism , consider P. Nursery web spiders are often parasitised by nematodes , sphecoid wasps , and chalcid wasps , as well as other parasitic wasps and Acari. These parasites infect the spider and its eggs and cocoons, which can lead to destruction of a whole clutch of eggs.
Baculoviridae and Rickettsia species infect nursery web spiders, as well. They most likely enter the gastrointestinal tract via the spiders' prey. Not only can nymphs and adults be infected, but different stages in the cocoon are infected, as well. From Wikipedia, the free encyclopedia. This article may be expanded with text translated from the corresponding article in German. December Click [show] for important translation instructions.
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For more guidance, see Wikipedia:Translation. Clerck , Retrieved World Spider Catalog. Retrieved 19 August Blandin: Etudes sur les Pisauridae africaines. Suisse Zool. Biology of Spiders. Oxford University Press. Ecophysiology of Spiders. Thanatosis as an adaptive male mating strategy in the nuptial gift-giving spider Pisaura mirabilis. Behavioral Ecology —