Conservation for the future.

Welcome to my blog walking through the seasons,over the coming months i will be blogging about many different aspects of wildlife, so i hope you all enjoy looking at my blog.































































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Wednesday 28 November 2012

Spiders.

In Autumn a male house spider faces the most important and dangerous journey of his life. His mission is to seek out a female spider. But to reach her he may have to risk his own life. For the past year he has lived on his web, its an architectural wonder. On tip toes, feathery hairs on his feet stop him from sinking through the web. But a flat footed fly will some become entangled once he has flown into the web. Once the fly in on the web the spider will pick up the vibrations with the sensitive hairs on his body, he then strikes. Venom injected by needle like fangs quickly subdues his prey. Powerful jaws and digestive enzymes soon break down the fly. This will be the spiders last supper, autumn has arrived and the urge to mate has become overwhelming. When the time is right he leaves the safety of his web. Now he must venture into an unknown land where a female house spider awaits. Out in the open the spider is exposed to predators like great tits. When he gets to the house, he`s confronted with a weird landscape.  A world away from his wooden shed and his web. He has to climb a huge wooden mountain,  a staircase. Its a long way up, but he can grip onto all of the cracks and crevices on the staircase. Just like us spiders need to drink so he is drawn towards the water in the bathroom. Into danger, if he falls into the water he could drown if he can`t get out. The water surface tension will keep him afloat for a while. Our baths and sinks are death traps to spiders, but a flannel makes it easier for spiders to get out safely. His hairs on his body and his exoskeleton do repel water, so after a good groom he will soon dry off. In a spare room a female spider has spun a web, as soon as the spider touches the web, receptors on his body sense the females pheromones, he must be careful though as she may mistake him for food. He begins a courtship dance, drumming his pelps and bobbing his ofisfoma. The female listens to the vibrations and is satisfied with the suitor. She allows him to approach, he uses his pelps to transfer his sperm. After mating he takes up residents in her web. But the danger isn`t over. A rival male may approach the web, you see the female stores sperm over the winter, she then fertilises the eggs next spring. So the first male will have to fight any intruders to make sure he is the father  of the off-spring. Each male could deliver a toxic bite, so it could be a fight to the death. But the rival spider is normally pushed away from the web. He will then return to the female spider, his mission is now complete and he won`t survive the winter. He has made sure that a new generation of his will appear next year.

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