Surprisingly, evolutionary new research suggests that while a rattlesnake routinely eats lizard meat, a new study suggests that its neighboring snake can not strike and strike to kill reptile food.
The first study shows a major toxic variation in the population of the Florida pygmy rattlesnake and raises questions about why the effects on one type of food are very different from person to person and why this mutation exists. The study, led by evolutionary biologists at Ohio State University, is published online today (Feb. 6, 2019) Biology literature.
Scientists have long known that this type of difference exists between different populations of snakes of the same species. I had intuitive meaning because I live in a different environment.
But discovering a wide range of mutations among group members of snakes born and raised in the same area is confusing and interesting from a scientific standpoint, said H. Lisle Gibbs, lead author of the study and Ohio State Evolutionary Professor of Physics. Ecology and organic biology.
"We've found a difference of almost four times the toxicity difference between snakes in other parts of the world, not previously focused on others' snakes." In another habitat, "said Gibbs.
To study potential toxicity differences, researchers first identified 32 pygmy rattlesnakesSistrurus miliarius), Most of them were found within about 60 miles of each other in Florida. Then, they compared the effect of each snake's poison on the lizards collected in the same area.
The lizard occupies about a quarter of this snake's diet in Florida. I also like frogs and small mammals. The researchers intentionally used brown anole lizards (Arnold S. Gray) Are regarded as species invading from Florida and are used as their model because they are not of origin in that area. But they are one of the common food species of snakes, the green anoleArnold Carolyns).
In some cases the individual rat's poison can be fatal to most lizards. However, the poison of other snakes from the same area was fatal but not fatal.
One important question left by researchers is how the toxicity of snakes changes with different food species.
"Snakes that are not good for killing these lizards are great for killing other food like frogs, and we just do not know," said Gibbs.
"Another big question from an evolutionary point of view is why it is always good to kill everything."
Dr. Gibbs said that it takes a lot of energy to produce the protein found in the poison, and that other snake's energy may be concentrated on toxicity for other types of food.
"This is a whole new way of seeing how evolution works in poisons that we have not considered. There is a new behavior in this evolutionary play that we have not known yet."
In addition to widening the scientific understanding of evolution, this study is a study of drug-based drug development efforts that are already helpful in cardiovascular disease and can be proven to be important in the treatment of pain and neurological disorders in the field of pharmaceutical research. This can help. Like other people's illnesses, Gibbs said.
Variable Dock – Why are there snakes more dangerous than other snakes?
Functional divergence of a high level of toxicity to food during poisoning of a private pygmy rattlesnake Biology literature, royalsocietypublishing.org/jou … .1098 / rsbl.2018.0876