Thursday, 16 May 2024
-- Advertisement --
Liberty Club Level3 Divers24

Everyone can dive - Spider Topik

The Topik spider (Argyroneta aquatica) is an unusual representative of the animal kingdom. Although its physiology and physiognomy are no different from those of other spiders, it has found a very ingenious way to spend its entire life underwater. The fact that Topik, leads an underwater lifestyle, has been recorded for more than 250 years,
Published: June 10, 2011 - 14:49
Updated: July 22, 2023 - 07:23
Everyone can dive – Spider Topik

Argyroneta_aquatica_Paar-550x359

The Topik spider (Argyroneta aquatica) is an unusual representative of the animal kingdom. Although its physiology and physiognomy are no different from those of other spiders, it has found a very ingenious way to spend its entire life underwater.

-- Advertisement --


The fact that Topik, leads an underwater lifestyle, has been recorded for more than 250 years, but only recently has it been established how it takes in and stores the oxygen it needs to survive in such a hostile environment for arachnids.

It turns out that it stores atmospheric air in an underwater bell that it inhabits during the warmer seasons. The whole process of taking and storing air looks as follows: The spider covers its abdomen (on which its respiratory organs – the lung-tracheae – are located) with an air bladder, which it creates, by submerging underwater, air bubbles. This is accomplished by raising the end of the abdomen and the hind pair of legs, between which it forms a special tangle of webbing threads, thanks to which it draws the air bubble, attached to its body, under water. The final stage is to pull the air into the bell and store it.

Scientists Roger Seymour of the University of Adelaide in South Africa and Stefan Hetz of Humboldt University in Germany, discovered that the species, uses its net like gills, allowing it to spend most of its time underwater, rarely surfacing.

In the study, they conducted an experiment on 12 spiders, which they placed in separate containers to examine the oxygen content inside the air bubbles as well as outside. For this study, they used fibre optic cables whose tips were coated with an oxygen-sensitive dye. The results showed that oxygen from the outside diffuses into the bubble, while carbon dioxide travels the other way and thus the Topik replenishes the supply it needs to survive.

Thanks to the external gills formed from their web, the spiders of this species extract up to 70% of the oxygen they need to live from the water. Scientists have never seen any individual need to surface, suggesting that the Topik can stay underwater for more than 24 hours using its ‘webbed gills’.

Scientists are fascinated by the amazing adaptability that this arachnid has developed. This provides great protection against predators that habitually prey on spiders.

Source: newscientist.com
Photo: wikipedia.co.uk

Other posts
Share:
Facebook
Telegram
LinkedIn
Twitter
Pinterest
WhatsApp

About author

Tomasz Andrukajtis
Editor-in-chief of the DIVERS24 portal and magazine. Responsible for obtaining, translating and developing content. He also supervises all publications. Achived his first diving certification – P1 CMAS, in 2000. Has a degree in journalism and social communication. In the diving industry since 2008.
-- Advertisement --
freediving dive insurance dan
-- Advertisement --
Level3 Club CCR Divers24
Recent post
KFK UJ 301 – amazing digitalisation of the German WWII warship wreck
Żibel’s Environmental Triumphs in 2023
OceanShot and PADI Unveil 2024 Plans
Reinstated Fishing Rights Threaten Divers Amid Malta's Wrecks
Ghost Nets: The Silent and Deadly Threat to Our Oceans
Sharks and plastic – how it affects these magnificent creatures?
What the Foam #WTF – Ocean Conservancy Launches a new Campaign
You haven't read yet
Lungfish Orca v6 Rebreather Achieves CE Certification
Shearwater Peregrine TX: The Ultimate Diving Companion
Raid HYPOXIC TRIMIX OC course to 100 metres
Sintzi Cave Exploration: Polish Divers' Double Success in Greece
Baltictech 2024: Dive into Inspiration - Tickets Now on Sale!
Adriatic Depths: Cultivating Sustainable Tourism through Underwater Heritage
More posts in this category

Search...

The Divers24 portal is currently the largest online medium treating diving in Poland. Since 2010 we have been providing interesting and important information from Poland and around the world on all forms of diving and related activities.

Contact us: info@divers24.com