Poisonous spiders prey on snakes many times their size, new research discovers — and often wins against snakes that are as poisonous as they are.
Researchers found 319 records Spider Kill and feast SnakeOf these, 297 were wild and naturally occurring events. (The remaining 22 were performed in captivity.) About one-third of these examples came from scientific observations published in journals, and the rest were found on news or social media sites. It was.
“The longer we tackle this problem, the more we find that certain spiders accomplish such amazing feats,” said Martin Naiferer, a research co-author and conservation biologist at the University of Basel, who previously reported. I will. Spider eating bats And other vertebrates.
Relation: See pictures of spiders eating bats
A mighty spider
Snake snacks are very widespread, with more than 30 species of spiders practicing in natural conditions and 11 more taking advantage of captive opportunities to Naiferer and the University of Georgia herpetologist J. Whitfield. Gibbons this month Alacnology Journal.. The widowed spider was the most frequent spider killer and was responsible for about half of the snake’s death.This group is marked with the infamous hourglass Black widow (((Latrodectus mactans, L. Hesperus, L. variolus) Relatives like African button spiders (L. indistinctus). These spiders are small, up to 0.4 inches (1.1 centimeters) in size, and usually target small, young snakes, but their poison is deadly enough to kill much larger animals.
Members of tarantula The family was responsible for another 10% of the snake killings. These large spiders do not net, but actively hunt for prey on the ground and trees. Another 8.5% of predation cases were carried out by the large Argiope amoena, also known as predating and eating. Bats and birds.. These spiders are heavily woven, Very strong circular web.. When a spider kills a snake, it sucks out its internal organs like an insect.
Reports of snake-eating spiders came from all continents except AntarcticaHowever, half of the reported events occurred in the United States and almost one-third occurred in Australia.
Researchers have found evidence of spiders preying on 86 species of snakes, with Colubrid snakes being the most common victim.This family includes common species such as: Garter snake (((Thamnophis cyrtopsis)and Rat snake (((Pantherophis guttatus), And their epidemic among spider victims is likely to reflect the fact that they are the most abundant snake family on all continents except Australia, Nyffeler and Gibbons wrote. It was.
Most of the snakes attacked by spiders were babies or boys weighing less than 1 gram. However, snakes sometimes defeated large snakes. The biggest victims were up to 3.25 feet (100 centimeters) long and weighed a few ounces. Large snakes were usually killed by orb weavers and large tarantulas. Black widow can overcome snakes up to 30 times their size by weight, and in one report spider web spiders (Steatoda triangulosa) I entwined a 6 inch (15 cm) garter snake, which is 355 times the weight of a spider.
“Such achievements are truly amazing,” Nyffeler told Live Science. “It’s almost incredible.”
Spider venom can take hours to days to kill snakes, 30% of which have their own venom. Spider attacks were fatal to snakes in 86% of reported cases, but only 1.5% of snakes escaped on their own. An additional 11% were rescued by human observers. When a spider beats a snake, it can take several days to finish the meal.
In most cases, researchers write that snakes are likely to be a rare and lucky diet for spiders that normally live in insects. However, some spiders, especially tarantulas, may make snakes a normal part of their diet. Australian Latrodectus mactans (Australian redback spiderLatrodectus hasselti) Can also be seen eating large amounts of both lizards and snakes.
He said that Niferer suffers from ophobidiophobia, but the study mixed fear and charm. “It was very fascinating to get a glimpse of the parallel world of the snake world after studying the spider world for the rest of my life,” he said.
Originally published in Live Science
These spiders kill snakes hundreds of times their size
Source link These spiders kill snakes hundreds of times their size