![]() ![]() Furthermore the traps of some species are such designed that the insect produces with its flight attempts a low pressure, whereby the flight away is also aggravated. The trap becomes downward more and more narrow, so that the insect will be quasi stucked. You can observe this at some North American Pitcher Plant species and at the Cobry Lily. A further mechanism is a spatial tightness. If the insect reaches this zone then it falls down and gets into the liquid-filled third zone. Venus Flytrap (Dionaea Muscipula) This plant is native in some parts of North and South Carolina, and they thrive in damp, mossy, and in mostly covered areas where there are not many people who frequent the expanse. This zone is downward immediatly substituted by a smooth zone which is often waxy lined. It is the perfect guide to get started on the hobby of growing these amazing plants. Mostly are downward directed tiny hairs located at the trap entrance which make a break-out difficult. Several mechanism serve here the trapping of the insect and the defeat of its escape. The attraction zone leads direct to the capture zone. The partly existing caps have often transparent windows to persuade the insects of an escape route. A further attraction occurs by an appealing coloration and partially by a UV-signature (insects can perceive the in the UV-spectrum lying drawing). Mostly is nectar at the entry of the trap secreted, often also pheromones. Furthermore several mechanism were developed to the attraction of the insects. ![]() All pitfall traps have a liquid-filled cavity, which presents several mechanism to avoid an escape of the prey. ![]() In the simplest case a leaf is folded to a liquid-filled bag, in the most complicated case to a complex pipe. Pitfall traps are found in several plant families most prominently in the tree-hanging Nepenthaceae (upper left and right) and ground-dwelling Sarraceniaceae (bottom left). Special: Endangerment of Vietnamese speciesįive plant genera use this trap principle.Special: Van Long Wetland Nature Reserve.Carnivorous plants in their natural habitat.Water Wheel Plant (Aldrovanda vesiculosa).North American Pitcher Plant (Sarracenia). ![]()
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