why do spiders die 36 hours after laying eggs?
475647
This question is a bit misleading... only SOME species of spider die soon after laying their eggs. Many will live on for years and can reproduce several times.\n\nAs to those few which do die; reproduction is a very costly endeavor for any organism and this could diminish the spider's resources. Evolutionarily speaking, the only goal it to get one's genetic material to the next generation, that done, the organism is simply taking up habitat.
1139605
Black Widow Spider\nThey spin irregular webs in crevices and other dark, protected spots.The female's bite, poisonous to humans, is followed by local pain and swelling, nausea, and difficulty in breathing and is sometimes fatal. \n\nBrown Recluse Spider\nIt spins a sheet web that may be found in secluded areas among rocks or in houses. The bite causes a long-lasting sore that involves tissue death, and severe reactions to it may become life-threatening.\n\nCrab Spider\n Crab spiders do not spin webs to trap prey, but hunt on the open ground or on vegetation or flowers. In this, they resemble other free-living spiders such as jumping spiders and wolf spiders.\n\nGo to my source 4 pics
480959
It's all part of the wearing you down..till you collapse in a state of exhaustion..and the victorious fly will proceed to inject it's maggot eggs into your hide.\nIt's all perfectly normal, natural and wet.
631902
I'm not sure, it sounds like it is cracked\nI think it may be difficult for you to regulate the temperature with the light.  It may be possible you are overheating them.  If they are still moving around then they are probably not getting too cold.  i think there is a chance they are ok.  The one that cracked probably didn't survive because its lungs were not developed enough.  Do you know how many days it has been?  I believe chicks should hatch after about 21 days.
967074
Egg / ovum -- 48 hrs\nSPerms -- 48-72 hrs
152413
A few hours after a person or animal dies, the joints of the body stiffen and become locked in place. This stiffening is called rigor mortis. Depending on temperature and other conditions, rigor mortis lasts approximately 72 hours. The phenomenon is caused by the skeletal muscles partially contracting. The muscles are unable to relax, so the joints become fixed in place.\n\nMore specifically, what happens is that the membranes of muscle cells become more permeable to calcium ions. Living muscle cells expend energy to transport calcium ions to the outside of the cells. The calcium ions that flow into the muscle cells promote the cross-bridge attachment between actin and myosin, two types of fibers that work together in muscle contraction. The muscle fibers ratchet shorter and shorter until they are fully contracted or as long as the neurotransmitter acetylcholine and the energy molecule adenosine triphosphate (ATP) are present. However, muscles need ATP in order to release from a contracted state (it is used to pump the calcium out of the cells so the fibers can unlatch from each other). ATP reserves are quickly exhausted from the muscle contraction and other cellular processes. This means that the actin and myosin fibers will remain linked until the muscles themselves start to decompose.\n\nRigor mortis can be used to help estimate time of death. The onset of rigor mortis may range from 10 minutes to several hours, depending on factors including temperature (rapid cooling of a body can inhibit rigor mortis, but it occurs upon thawing). Maximum stiffness is reached around 12-24 hours post mortem. Facial muscles are affected first, with the rigor then spreading to other parts of the body. The joints are stiff for 1-3 days, but after this time general tissue decay and leaking of lysosomal intracellular digestive enzymes will cause the muscles to relax. It is interesting to note that meat is generally considered to be more tender if it is eaten after rigor mortis has passed.
218354
As soon as it lay its eggs, it will die the same day.
667090
This is like asking for the length of lifespan for mamamals and expecting one answer (i.e. cats vs humans).\n\nBelow is a link for spiders but the different species of spiders live and develop at different rates.\n\nThe arachnid family also includes scorpions, ticks and mites.
779721
The vast majority of spiders have a venom so weak it is completely and totally harmless to human beings. It is venom designed for killing only other bugs about their own size and nothing larger in most cases. In the United States the spiders you generally worry about are the brown recluse spider and the black widow spider. In Australia you would be worried about Sydney Funnelweb Spider. If it was not black and did not have an hourglass red symbol on its back I would not be too worried.\n\nAs was previously suggested don't touch it, just remove the sheets at the corners for washing and change to a fresh set of linens. The blood of spiders is not poisonous. Just the venom is very small venom glands which is not a contact poison but a venom that must be injected into the bloodstream to have any effect, generally through the fangs.
1031537
I don't know but why you find out let me know. The other day I found one and I had to throw something over it to trap it and wait 5 hours until my husband got home to kill it. I sat on the couch the whole time with my feet off the floor. My phobia is so bad they make me cry. I'm pathetic lol. They are so freaky!!!
1142664
It would bother me being there, but I wouldn't kill it. Depending on my mood, I might leave it there...or more likely I would grab a stepstool and scoop the spider up in a jar or something (so it wouldn't bite me) and then dump it outside. I don't like squishing bugs cause you get guts everywhere. gross.
628075
I have heard of only two poisonous spiders that live in homes.  Black widows which unless you have a serious allergic reaction to venoms, are the lease harmful.  But from the sound of it, u could have been bitten by a brown recluse which is very deadly.  These bite will not get better.  The venom will eat the surrounding tissue and eventually gangrene will set in and unfortunely ur limb is on the chopping block. :(  I would serious go to the ER and say look this could be a brown recluse bite and I need serious med attention.  I have pics from an email as a warning and what the bite looks like and the effect of that bite 9 days after it happen.  So u are welcome to email me and I'll be happy to send it to u for comparisons.  But I do agree with you your doctor should have done better.  He should have done a blood work or gotten tissue samples to determine the seriousness of the problem.  Return to the ER and be seen!!!
802270
Depends how fast someone steps on it.\nMost araneomorph spiders (orb weavers, huntsman, etc.) live from one to three years. Mygalomorph spiders (trapdoors, tarantulas) are generally much longer lived. Some large tarantulas species (Theraphosidae) take six to eight years to mature and live 20 years or more. A long life and continuing moulting and growth allows some of these species to grow very large - the legs of a large goliath spider (Theraphosa blondi) may almost span a dinner plate. \n\nFemale spiders generally live longer than males, this difference being especially notable in long-lived spiders like mygalomorph spiders - e.g., male funnelwebs mature in two to three years and then die about nine months later; whereas females mature in three to four years but may live for many years (six or more) after that\n\n\nHere is more info on the spider and a very interesting site about spiders.  Take a look at it you'll love it.\n\nSpiders are ancient animals with a history going back many millions of years. They have always been with us, an ancient source of fear and fascination. They are abundant and widespread and are natural controllers of insect populations. Wherever you live, you're always close to a spider. \n\n\nSpiders grow by periodically shedding their semi-rigid external 'skin' or cuticle of semi-rigid chitin and replacing it with a new larger skin they have grown underneath the old one (this is called ecdysis or moulting). This process includes replacement of every hair on the body and internal cuticular structures such as the fore and hind gut linings and female genitalia. Once they are mature most araneomorph spiders stop moulting. However, female mygalomorph spiders moult throughout life, although at longer intervals as they get older. This allows some species, particularly tarantulas (Theraphosidae), to grow very large. \n\nDuring the moulting process, which may take many hours, the spider is in great danger from predators, being soft-bodied and unable to move until its new cuticle has hardened. For this reason moulting is often done at night hanging safely in mid-air from a silk line; or sealed within a silk retreat or moulting chamber, e.g., in a curled leaf, a burrow, or under bark. \nSpider eggs develop and hatch within the egg sac, the larval spider undergoing at least one further moult before emerging from the sac. The number of growth moults varies between species, as well as with size and nutritional state. Poorly fed spiders will moult fewer times and become smaller adults. Most spiders undergo 5-10 moults to reach adulthood. Males often have fewer and faster moults. Extreme examples of this are given by the Magnificent spider (Ordgarius magnificus) and the Bird Dung spider (Calaenia kinbergi), both large, specialised moth catching relatives of the orb weavers. The males moult only within the egg sac, emerging as tiny, fully mature males along with their similarly sized and very immature sisters, which will take many weeks and moults to become large adult females. \n\nA spider's appearance can change considerably during growth from spiderling to adult, as indicated by these stages in Redback Spider development. Adult males and females also may look quite different, especially in respect of size and colour. Spiders with good eyesight like jumping spiders often have colourful or strikingly marked males which differ considerably from their drabber females.
933147
Actually a highly venomous spider after death would not be wise to touch. A dead bee if you touch the stinger you will be stung and injected with venom even though it is dead. A poisonous spider would be one that is fatal to eat. The word poisonous and the word venomous in regards to animals have two separate meanings.
123548
Yes, but it is so slow we won't register it. We only live a second, compared to the lifespan of the earth and it's evolving creatures. \nAs far as the spiders and other creatures are concerned, this is more of a fact of 'finding' and discovering new creatures, not necessarily that they just evolved.
61011
Yup da black widow spider eats up da male spider during mating........Its a way da male spider passes its sperms 2 the female as da female doesnt allow him 2 fuk her so he gets in da way but keeps on fukin her till his last breath.......(I would never do dat for mah GF)\nThe black widow spider is 20 times as big as da male spider.....
1149097
Is a species of spider where once they have mated the female spider kills the male spider hence the name black widow