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	<title>This Week At Macquarie UniversityEight reasons not to be spooked by spiders this Halloween &#8211; This Week At Macquarie University</title>
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		<title>Eight reasons not to be spooked by spiders this Halloween</title>
		<link>https://thisweek.dev.survivor.mq.edu.au/thisweek/2017/10/31/eight-reasons-not-to-be-spooked-by-spiders-this-halloween/</link>
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		<pubDate>Mon, 30 Oct 2017 22:27:12 +0000</pubDate>
		<dc:creator><![CDATA[Triana O'Keefe]]></dc:creator>
				<category><![CDATA[Community]]></category>

		<guid isPermaLink="false">https://thisweek.dev.survivor.mq.edu.au/thisweek/?p=8190</guid>
		<description><![CDATA[Originally published on The Conversation, this article was authored by Lizzy Lowe. Spiders are a traditional part of a Halloween scare and for some people, they have been a source of fear for years. But in reality, spiders deserve to instill a sense of amazement, not fear. Spiders have amazing survival strategies, beautiful colour displays, [&#8230;]]]></description>
				<content:encoded><![CDATA[<h3>Originally published on <em><a href="https://theconversation.com/eight-reasons-not-to-be-spooked-by-spiders-this-halloween-86222" target="_blank">The Conversation</a>, </em>this article was authored by Lizzy Lowe.</h3>
<hr />
<p><strong>Spiders are a traditional part of a Halloween scare and for some people, they have been a source of fear for years. But in reality, spiders deserve to instill a sense of amazement, not fear.</strong></p>
<p>Spiders have amazing survival strategies, beautiful colour displays, complex social interactions, and play important roles in our ecosystems.</p>
<p>Here are eight reasons (one for each leg… <a href="https://australianmuseum.net.au/how-spiders-see-the-world" target="_blank">or eye</a>!) to love, not hate spiders.</p>
<ol>
<li><strong>They like to play dress-ups</strong></li>
</ol>
<p>There are many species of spider that have evolved to look very unspiderlike in order to avoid being eaten or to sneak up on their prey.</p>
<p>One fantastic example is a group of spiders that <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4038025/" target="_blank">look like bird poo</a> when they curl up on a leaf. They even leave a white pool of silk to complete the effect.</p>
<figure class="align-center zoomable"><a href="https://images.theconversation.com/files/191942/original/file-20171026-5371-4nqnsx.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/191942/original/file-20171026-5371-4nqnsx.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" alt="" /></a></figure>
<p>This is a sneaky strategy to avoid predation by birds, and can fool even the sharpest of eyes.</p>
<p>Other spiders have <a href="https://theconversation.com/spiders-disguise-themselves-as-ants-to-hide-and-hunt-their-prey-33953" target="_blank">evolved to look like ants</a> to such an extent that it’s very difficult to distinguish between the spiders and their hosts.</p>
<p>To complete the illusion these spiders even <a href="https://academic.oup.com/beheco/article/27/3/700/2365683/Locomotory-mimicry-in-ant-like-spiders" target="_blank">move like ants</a> and often hold up their front two legs to look like antennae.</p>
<figure class="align-center zoomable"><a href="https://images.theconversation.com/files/191943/original/file-20171026-28045-1did0gq.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img class="alignnone" src="https://images.theconversation.com/files/191943/original/file-20171026-28045-1did0gq.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" alt="" /></a></figure>
<p><strong>2. They love their kids</strong></p>
<p>You might think they are cold-blooded killers, but some spider mums will do anything for their kids.</p>
<p>A <a href="http://scholarworks.uark.edu/jaas/vol18/iss1/6/" target="_blank">wolf spider mum will carry all her offspring</a> around on her back until they are big enough to avoid predators and catch food on their own.</p>
<figure class="align-center zoomable"><a href="https://images.theconversation.com/files/191778/original/file-20171025-5816-5ovcnm.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/191778/original/file-20171025-5816-5ovcnm.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" alt="" /></a></figure>
<p>There is even a spider that loves her kids so much that after they’re born she fills her body with delicious nutrients and <a href="http://www.americanarachnology.org/JoA_free/JoA_v43_n1%20/arac-43-1-77.pdf" target="_blank">lets her babies eat her</a> while she’s still alive. Now that’s dedication.</p>
<p><strong>3. They&#8217;re great housemates</strong></p>
<p>Unlike your average housemate, spiders definitely pull their weight around the house.</p>
<p>They are quiet, clean, considerate and will happily clear out all of the unwanted bugs living under your cupboards.</p>
<p>Spiders are generalist predators that play <a href="http://onlinelibrary.wiley.com/doi/10.1111/j.1439-0418.1987.tb00992.x/full" target="_blank">important roles in controlling pests</a>, including cockroaches and flies around your house if you’ll let them.</p>
<figure class="align-center zoomable"><a href="https://images.theconversation.com/files/191527/original/file-20171024-20365-a7cuz0.JPG?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/191527/original/file-20171024-20365-a7cuz0.JPG?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" alt="" /></a></figure>
<p><strong>4. They have an artistic side</strong></p>
<p>The large circular webs that some spiders build are primarily used to catch prey, but they can also be a canvas for spiders who like to create masterpieces.</p>
<p>St Andrews cross spiders are common across Australia and are well known for the striking white cross in their webs which <a href="http://www.publish.csiro.au/ZO/ZO00007" target="_blank">helps them to attract prey</a>.</p>
<p>But for some reason, the juveniles like to get creative and often draw a circle of zig-zags.</p>
<figure class="align-center zoomable"><a href="https://images.theconversation.com/files/191951/original/file-20171026-28086-3k057j.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/191951/original/file-20171026-28086-3k057j.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" alt="" /></a></figure>
<p>Other spiders are hoarders and store interesting things like bits of old food, snail shells, flowers and leaves in their webs.</p>
<p>There are even spiders who use <a href="https://www.wired.com/2014/01/more-decoy-spiders-philippines/" target="_blank">debris to draw images of larger spiders</a> – presumably to trick predators into thinking that they are larger than they actually are. Or perhaps it’s a self-portrait.</p>
<p><strong>5. They&#8217;re great fishing buddies</strong></p>
<p>A spider might not be the first mate you would choose to take on a fishing trip, but Dolomedes spiders are great anglers.</p>
<p>They live in and around the water and are able to catch <a href="http://www.sciencedirect.com/science/article/pii/S0003347287801008" target="_blank">small fish, tadpoles and even frogs</a>. They can also catch you insects to use for bait.</p>
<figure class="align-center zoomable"><a href="https://images.theconversation.com/files/191779/original/file-20171025-5822-1qsw96i.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/191779/original/file-20171025-5822-1qsw96i.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" alt="" /></a></figure>
<p><strong>6. They dress (and dance) to impress</strong></p>
<p>We all know it can be hard to catch the eye of that special someone, but the little peacock spiders have courtship down to an art.</p>
<p>In addition to the colourful patterns on their flared abdomens, the males <a href="https://doi.org/10.1371/journal.pone.0025390" target="_blank">dance with their back legs and drum with their front legs</a> to attract a female.</p>
<figure class="align-center zoomable"><a href="https://images.theconversation.com/files/191959/original/file-20171026-28053-114tcio.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/191959/original/file-20171026-28053-114tcio.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" alt="" /></a></figure>
<p><strong>7. They can be social butterflies</strong></p>
<p>Social insects such as bees and ants have communal living down to an art. But did you also know there are also social spiders?</p>
<p>Sociality has evolved several times in spiders, and groups will often work together to catch food and raise offspring.</p>
<p>In Australia, there are social <a href="https://link.springer.com/article/10.1007/s00040-009-0015-3" target="_blank">huntsmen</a> who live in groups of up to 300 individuals under the bark of trees. These groups usually consist of one <a href="https://theconversation.com/hidden-housemates-australias-huge-and-hairy-huntsman-spiders-55017" target="_blank">dominant female and many of her daughters</a> who will help her to raise the younger generations.</p>
<figure class="align-center zoomable"><a href="https://images.theconversation.com/files/192133/original/file-20171026-13367-to283l.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/192133/original/file-20171026-13367-to283l.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" alt="" /></a></figure>
<p><strong>8. They&#8217;re actually not very dangerous</strong></p>
<p>A <a href="https://doi.org/10.1016/j.toxicon.2017.08.024" target="_blank">recent study</a> showed that less than 0.5% of all spider species pose a threat to humans, and even fewer can actually kill you.</p>
<p>Australians do need to watch out for redbacks and funnelwebs, but the vast majority of spiders are beneficial and will do a lot more good than harm.</p>
<figure class="align-center zoomable"><a href="https://images.theconversation.com/files/191957/original/file-20171026-28053-15beyvw.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/191957/original/file-20171026-28053-15beyvw.jpg?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" alt="" /></a></figure>
<p>So don’t be spooked by any Halloween spiders you encounter this year.</p>
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