New Zealand shuts cave for spider research & More News Here

New Zealand’s conservation division is shutting a South Island cave from vacationers to guard and examine a naturally uncommon and peculiar spider.

The Nelson cave spider, New Zealand’s largest arachnid, is present in just a few locations in and round Kahurangi National Park, on the northwestern tip of South Island.

With a legspan of 13cm and a physique of 3cm, the Nelson cave spider comes near Australia’s largest – the tarantula – however not like its trans-Tasman cousin, lives in caves somewhat than burrows.

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One such cave, Crazy Paving Cave, close to the western finish of the well-known Heaphy Track, is now being closed to permit the spiders room to breed.

Senior biodiversity ranger Scott Freeman mentioned conservationists have been involved for the species after noticing a drop-off in egg sacs within the cave.

“Only one egg sac has been seen since 2018,” he mentioned.

“We’re concerned the number of visitors, bringing torches in, was impacting the population.

“We wish to shut the cave to see if this can enable breeding to enhance. Closing the cave means we will monitor the spider inhabitants’s response to the removing of human guests.”

The egg sacs, which hang from the cave ceiling, can carry up to 50 spiders.

Mr Freeman said the spiders were “regarded as instantly descended from the earliest true spiders and could be the lacking hyperlink between primitive spiders – from the time of Gondwana 350 million years in the past – and fashionable spiders”.

New Zealand Geographic reports the species lives off native insects, including cave weta, “by dropping on high of them whereas secured to the cave ceiling with a thread, scooping them up and carrying them away like Tarzan”.

Mr Freeman mentioned spiders “climb across the cave partitions however they do not transfer very a lot, they’re fairly sedentary except they discover a weta”.

The Nelson cave spider is slow to develop, taking up to three years to mature, while other spiders complete their life cycle in a year.

A record for the spider held by New Zealand’s national museum, Te Papa, states there has been just one recorded bite.

“The chew was described as painful however no different results have been reported,” it reads.

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