When the female American cockroach burped, more than an hour had passed since the cockroaches first ate the gel bait.
Therefore, in addition to this unlucky one, the first batch of cockroaches who ate the gel bait also reacted one after another.
At this time, in containers No. 1-3, you can clearly see multiple piles of cockroaches gathered in groups, rustling and having a carnival.
In stark contrast to this, is the scene in containers No. 4-6:
More than forty minutes passed, and even the No. 4 container with the best efficacy only contained five or six cockroaches in a state of excitement.
Then another hour passed.
In container No. 2, the males that had eaten the female cockroaches also began to exhibit abnormalities.
At the same time, due to the escape of pheromones, each male cockroach is surrounded by multiple female cockroaches, forcing it to perform an indescribable action from a certain starting point.
The male cockroaches were exhausted and died in the brutal extraction, and their bodies after death also became the prey of the female cockroaches. The scene was so bloody that even Brother Cheng would scream cruelly from the sky when he saw it, and he was glad that he died early.
Then these batches of female cockroaches dispersed one after another, and the next round of transmission started again and again.
Eight hours later.
Only a few of the cockroaches in containers 1-3 still showed signs of life, and the rest were either mutilated corpses or complete burps.
In container No. 4, there were only about ten dead cockroaches, and the number of cockroaches in a state of excitement and poisoning was about fifteen or six.
As for containers No. 5 and No. 6, not to mention, the number of deaths was in single digits.
Seeing this situation, Tang Yiqiu, the youngest among the people, couldn't restrain her emotions and suddenly said "yeah":
"Senior, it seems our experiment was a success!"
As a senior student, this is her first time to participate in a project of this level. Seeing the results of the research group, how can this little girl not be excited?
But what surprised her was that Xu Yun shook his head gently:
"Success? Xiao Tang, this is not considered a success. It is true that we have developed the fourth generation of imidacloprid, but is it really the perfect form of imidacloprid?"
Seeing that the school girl was a little confused, Xu Yun pointed at the biological container and said:
"Let me ask you, during the experiment just now, what did the cockroaches that finished eating the same kind of corpses do?"
Tang Yiqiu blinked in confusion and subconsciously replied:
"The nerves are excited, and then they emit pheromones to mate with cockroaches of the opposite sex."
"Look, isn't this the problem?"
Xu Yun clapped his hands and said with a smile:
"The biological container we prepared has a limited capacity, which results in all the cockroaches inside being covered with pheromones and then engaging in mating behavior.
But in the living environment, the scope of activities of cockroaches is not limited to such a small container?
Their biological density may not be comparable to that of containers, but the complexity of their travel routes and smell intersections is much higher than that of containers. This is the difference between the experimental environment and the real environment."
Tang Yiqiu nodded in understanding, swung her ponytail behind her back, and asked:
"So Senior Xu, are you planning to improve the pheromone protein and expand the dispersion range of the pheromone?"
"No, no, no, you misunderstood what I meant."
Xu Yun shook his head quickly and said:
"I mean......
According to our current imidacloprid formula, if a male cockroach A will only attract female B before death, what if one or several male Cs are passing by at this time?
If you are lucky, C may be attracted to B's pheromone after B and A have mated, and then mate with B again and be poisoned.
But the onset of the drug takes time. What if C leaves first during the incubation period of the drug?
Wouldn’t this result in a considerable number of targets not being covered?”
Looking at Tang Yiqiu and others who looked stunned, Xu Yun smiled happily:
"So...can we add an attractant to the pheromone protein so that the pheromones emitted by cockroaches that eat for the first time are both male and female, so that A can attract C, that is...
What about same-sex mating, or exchanging lymph fluid?"
After Xu Yun finished speaking, the entire laboratory suddenly fell into silence.
After a few seconds, the two girls Tang Yiqiu and Zhou Peiyao said in unison:
"Senior, are you a devil?!"
Xu Yun shook his head and explained with a serious expression:
"No, no, no, I'm just adding logic from a realistic perspective.
After all, we have a biological model as a basis - in a standard residential area of one kilometer, the number of daily interactions between same-sex cockroaches is only 0.37 times.
So the situation I mentioned is very likely to happen in reality.
Moreover, if we can solve the problem of same-sex attractants, we may even develop corresponding insecticides for mosquitoes and flies in the future, which is also a very broad space."
Xu Yun was very confident in what he said, because one of the core points of the fifth-generation imidacloprid formula he obtained is that it can produce specific attractants through cell binding, thereby promoting cognitive disorders in cockroaches. Zhinan
And up.
Of course.
It also contains hundreds of millions of personal emotions, which I won’t express here for the time being.
Then Xu Yun paused and said seriously:
"Finally, there is the issue of insecticide efficiency. Although our fourth-generation imidacloprid is much faster than the other three gel baits, I think the binding speed of the targeted protein is still a bit slow.
Considering the attraction effect caused by the movement of living bodies, I personally feel that 20 minutes for the first-generation body and one hour for the second- to fifth-generation bodies should be considered a more reasonable configuration.
Because even after death, cockroaches will attract similar species to come and eat them.”
Previously, considering that the research team had not successfully developed even the fourth-generation imidacloprid, Xu Yun retained some of the optimization directions of the fifth-generation imidacloprid and did not announce them.
After all, it would be too ambitious to talk about the fifth generation before the fourth generation has broken through.
But now with the technological breakthrough of the fourth generation imidacloprid, some of his ideas can be put on the table:
"For example, the target of imidacloprid is nAchR, which is the R81 arginine residue in the LoopD region of the β1 subunit. The binding time is generally not less than thirty minutes.
so....
Can we add some other ideas?
For example, inhibiting acetylcholinesterase, or acting on sodium channels?"
Looking at everyone who was deep in thought, Xu Yun continued:
"There are 9 subtypes of mammalian sodium channels, namely NaV1.1-NaV1.9. The subtypes of insects are a bit more complicated, and we also need to deduce the binding formula of the receptor."
"However, we have passed the most difficult threshold of serialization. The remaining steps will undoubtedly be much easier, so everyone, please work harder?"
"Strive to make cockroaches become more male than male as soon as possible, become male on the left and right, separate male from male, and ascend to heaven as soon as possible!"
