Hur man sprider silver

Sedan antingen gror dem i en fuktig pappershandduk för transplantation senare eller så frön efter att all risk för frost har passerat. Du kan också dela silver spetsvin på tidig vår. Gräv helt enkelt upp rotkulan och dela den på samma sätt som andra perenner, som Shasta tusenskönor. Plantera varje division på en annan plats. Ett annat populärt sätt att sprida silver spetsvin, kallas lagerläggning. Du kanske undrar precis hur man sprider en silver spets vinrankor genom lager. Välj först en flexibel stam och böj den över marken. Gör ett snitt i stammen, lägg rotförening på såret, gräva sedan ett hål i marken och begrava den sårade delen av stammen. Täck stammen med torvmossa och förankra den med en sten.

Var kommer missfärgningen ifrån?

Lägg ett lager av mulch över den. Håll mulch fuktig i tre månader för att ge den tid att rota, och skär sedan stammen fri från vinrankan. Du kan transplantera den rotade delen till en annan plats i trädgården. Dekorativa trädgårdar Special trädgårdar problem Ätliga trädgårdar Alla kategorier. Hemsida » Dekorativa trädgårdar » Förökning av silver spetsar vinstockar Lär dig hur man förökar en silver spets vinstockar. Förökning av silver spetsar vinstockar Lär dig hur man förökar en silver spets vinstockar. Förökning av spideretter Lär dig hur man rotar spindelväxter. Formering av sandkörsbärsträd Hur man förökar sandkörsbär. Nästa artikel. Propagating Snapdragons - Lär dig hur man förövar en Snapdragon-växt. In the fourth and final step before feeding, the spider manipulates the orientation of the prey so that it is in the proper positioning for the spider to consume. The determining bite length is an important component of prey immobilization.

It is determined by the spider by momentarily touching the prey before biting. This contact allows the spider to determine in some manner what the prey is, and what its immobilization will entail. Argiope argentata exhibits two different forms of biting to its prey, which are differentiated by the duration of the bite: the short bite versus the long bite. For Lepidoptera , i.

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Another juxtaposition between these two methods of predation, is that the long bite is executed before the prey is wrapped in silk, whereas the short bite is executed after. One hypothesis for the difference in bite duration is that the long bite utilizes the spider's venom to immobilize the prey, whereas the short bite is unnecessary because the prey has already been immobilized by the silk wrapping. Since the short bite is given after the prey has been immobilized by other tactics, a separate hypothesis for its purpose has been proposed. For starters, the venomous content in this bite is likely to be slim to none. Since the prey is already immobilized and dead, venom is not necessary and would be a waste of the A. Rather, this short bite may serve as a quote-on-quote "taste-tester" for the spider.

Förökning av silver spetsar vinstockar Lär dig hur man förökar en silver spets vinstockar

This "taste-tester" supposedly gives the A. Argiope argentata eats butterflies and moths, both of which require a long bite upon first encounter. This is contrary to other insects that are immediately wrapped in silk. The species incorporates UV-reflecting silks into its web design which serve as an attractor to their prey. These patterns have been hypothesized to specifically attract prey that engage in pollination. Flowers incorporate UV-reflecting patterns to ensure their pollination by insects. Since the webs of A. Like other members of Argiope , silver argiopes often spin stabilimenta into their webs.

Förökning av silver spetsar vinstockar Lär dig hur man förökar en silver spets vinstockar (Dekorativa trädgårdar) | Användbar information och tips om trädgårdsskötsel. Professionell trädgårdsmästare blogg!

There are multiple hypotheses regarding the reasoning behind A. Evidence shows that in part this web-decoration is utilized to attract prey. Further hypotheses center on the idea that the UV reflective capabilities of the web divert and deter birds from crashing into it. Thus, A. Despite hypotheses that the web is also used in part as a defense measure against predators, evidence shows that the decorations can also attract them. This is supported by the statistical analysis of degree of web decoration in association with survival rate. High degrees of decoration correlate to a lower survival rate than moderate to minimal degrees of decoration. Argiope argentata is in the family Araneidae, otherwise known as orb-weavers. These silks differ in many ways including the silk gland they are ejected from, their mechanical properties, and their protein composition. Four of the fibrous silks, aciniform, major ampullate, minor ampullate, and tubiliform, are considered dry silks, and the remaining fibrous silk, capture spiral, is considered a wet silk.

Argiope argentata spider engages in sexual cannibalism , during or after copulation, without fail. The act of sexual cannibalism amongst A. Upon the first attempt at mating, the female spider thrusts the male spider off of her, which results in his death more than two-thirds of the time. Males that survive, bravely try again, this time with success, only to be met with immediate cannibalism after the act of insemination is completed. As a consequence of post-coital cannibalism, males generally have a single chance at successful mating. As an evolutionary strategy to ensure gene propagation, they engage in "plugging", in which the male breaks off its copulatory organ, securing it into the female, thus preventing future insemination by rivals. Argiope argentata engages in grooming behavior post prey capture. The duration and intensity of this grooming behavior has a specific connection to the type of prey that was captured.

The spider deliberately grooms the tarsal region on each of its eight legs, which is hypothesized to be due to the ability of these structures to respond to chemical changes using chemosensory organs. There is no evidence that A. The act of defecation occurs most frequently after biting the prey or feeding on it, and is a very calculated process. The web is able to capture and hold droplets of water for A. It appears that this is the supplier of water for the spider, regardless of the presence and degree of other environmental conditions. For example, the spider is not reliant on the humidity of the air or the water content of the prey. Lizards are significant predators of A. That is, within island habitats, there is a negative correlation between the number of lizard inhabitants and the number of A. Other predators include wasps and birds. As skilled web designers and catchers of prey, Argiope argentata are frequently the target of food theft by other species.

Dewdrop spiders genus Argyrodes are small kleptoparasitic or commensal spiders that can often be found living in the webs of A. Argiope argentata is not currently an endangered species. These spiders are relatively abundant across a variety of different habitats. Because Argiope argentata can be found across different countries, there are currently no unified efforts to promote the conservation of either the species or the land on which they reside. As has been relatively commonplace, conservation efforts for most natural habitats including that of Argiope argentata revolve around reducing greenhouse gas emissions , recycling, and reducing pollution. These efforts will not only sustain the habitats of spiders, but those of countless other species who might be harmed by human action. Argiope argentata are very important for the conservation of certain environments. According to information gathered from the St. Louis Zoo , these spiders help keep insect and pest numbers down as they consume thousands of pounds of them per year.

This helps to preserve certain crops and plant life without the need of harmful pesticides. The determination of whether the long bite or short bite is necessary is achieved by the momentary contact touch that the spider has with the prey right before the decision has to be made.