In this blog post, we will be discussing the “Signs A Spider Is Dying” in great detail. Spiders are really fascinating and interesting creatures but like anything else in life everything has to face death ultimatley. You might hate them or they may disgust you but you cannot refuse to believe how impressive these little monsters are! And for those of you who own a spider or are just interested in knowing how a spider acts before his death that is exactly what we will talk about here. So, without further ado, let’s get right into it
The few major signs that a spider is dying are as follows:
- The Hunched Stance: Before a spider’s death due to oldage, the spider’s leg start to curl up near its body more than usual. Usually, spiders have a wider stance, stretching their legs as far as comfortably possible, but near the death bed, legs of the spider become less stable and the spider lacks the overall strength to stay in that stance and hence the leg come quite closer to the overall body frame. This is a symptom of an ailing spider’s decreased coordination and failing nervous system. This is always the case the case when a spider is dying of old age. Another interesting thing to note at this point s that, young spiders might also curl their legs inside a bit when they are dehydrated, but these are not so far in, they are still active.
- Stops Eating: When near death, spders do not eat anything even if the food is right in front of them, they just don’t have the energy to consume and digest the food anymore. So if your spider hasn’t eaten in a few days, has a bit of a curled stance, and has been mature for quite some time, there is a huge chance that it is about to bite the dust
- Less Overall Movement: The overall movement of a spider decreases quite a bit when they become old. They stop reacting less and quite slowly to the outer stimulus. The old spiders wouldn’t be fast to avoid contact or take a fighting stance. Why is this you ask? Well, they just don’t have the energy to move and the overall functioning of their body is becoming less and less efficient as everything in their body grows stiff, until when they can’t be
Theses were the three main signs that any spider shows when near death
Moving on, let’s talk about this death curl in which the spiders enter when they die, and why is it that this happpens
The Death Curl Of A Spider
The most common explanation for why spiders die on their backs is something called the “position of flexion.” When a spider is dead or dying, it cannot maintain tension in its leg muscles and naturally falls into a state of relaxation. The explanation goes that in this relaxed state, the spider’s legs curl or fold up, causing it to topple over and land on its back before it expires.
In the legs of spiders, the femur-patella joint and the tibia-metatarsus joint extend by hydraulic pressure only. Spiders do not have muscles for extending the legs at these joints. Spiders control the hemolymph (their blood) pressure in the legs to extend them and walk.
However, there are muscles for contracting these joints. So when hemolymph pressure drops, there is only a force of contraction and no force of extension. The legs therefore contract and curl up.
Do Spiders Die In An Upside Down Position?
Yes, but not all of them. The curling up of the legs and the overall posture is something that is found common in all species of a dead spider and many of you might have heard that more then just curling its legs spider when dead curls its legs in an upside down position. This is many times the case but not always the case as can be observed with many species of the tarantula who when die, do die with their legs curled up but they are not in an upside down postion when this happens
Normally, if a spider is knocked onto its back, it can use its legs to rock on its sides until it rights itself. If, however, spider can’t roll back onto its abdomen because it has become too weak or because its nervous system isn’t functioning properly, it remains stuck on its back.
Because the spider can’t get nutrients or protect itself from predators or the elements when it’s immobilized in this position, it soon dies if it can’t flip back over.
An injury or a lack of food or water can also compromise a spider’s ability to right itself. Or the spider could simply be at the end of its lifespan and its strength and coordination abilities are declining.
Hopefully, this article was helpful in giving you an insight into some of the characteristics of a dying spiders and answering a few questions that you might have had about them. If you are interested in going through some interesting facts about social spiders, ranker.com has a great article written on just that, you can give it a look “here“. And if you want to go through an article about “Do Spiders Get Revenge?”, we have an article written on that as well, you can give it a look “here“