Soon after, Chen Hu and Isabel walked out of the baobab hole, each holding a lamp device in their hands, but it was a portable spectroscopic irradiator, as for Hubi and Pingtou Sister, they did not follow, after eating and drinking, they were too lazy to move anymore, and they fell asleep in the corner. Pen Fun Pavilion wWw. ｂiquge。 ｉｎfo

At this moment, the moon and silver stars are scarce, and the vast prairie is dark, but the moonlight illuminates the earth, as long as human eyes adapt to this light, they can still see the nearby environment clearly.

Chen Hu walked with Isabel on the grassland under the moonlight with the lamp device, and then asked:

"Little Isa...... Doctor, what animals are we going to study at night?"

Hearing this, Isabel turned on the lamp in her hand, and a purple light immediately appeared.

"A lot of insects are nocturnal, they have a strong phototaxis, and the first topic tonight is to investigate the species of insects. ”

After speaking, Isabel also asked Chen Hu to turn on the lamp, and then held it with her hand, waiting for the insects to fly over, in the process, Isa did not forget to explain:

"Many insects react differently to the intensity of light and the short wavelength of light, human visible 800-400nm, divided into red, orange, yellow, green, cyan, blue, violet, infrared light greater than 800nm and less than 400nm ultraviolet light, invisible to the human eye.Insects perceive 700-250nm light, short wave light, especially for 400-330nm ultraviolet light has a strong tropism......"

There are a lot of balabala, Chen Hu can't understand it anyway, so he doesn't bother to listen, as long as he can complete the task, he won't pay attention to the light wavelength and light wave on it, as for the tourists in the live broadcast room, there are a lot of highly educated children's shoes.

"When I saw the spectrometer, I already guessed that it had something to do with insects. ”

"Different wavelengths, corresponding to different insects, everyone guess what the first insect is?"

"The first one should be mosquitoes, I feel like this thing has the most!"

"I think it's a moth, don't they all say that a moth fights a fire? ”

……

Obviously, there are many tourists who are very interested, Chen Hu and Isabel are holding the lamp tube that emits ultraviolet light, and after a while, the first insect flies over.

The first insect was not a mosquito or a moth, but a worm with two long pigtails...... Well, it should be the tentacles of the Celestial Bull.

The heavenly bull flew to Chen Hu's lamp tube and lightly hit it a few times, but Isabel saw this, but turned on the recorder and said at the same time:

"This is a spotted rusty beetle, which has phototaxis at night, and its appearance indicates that there are eucalyptus, oak trees nearby, ......"

It's a lot of Bala again, Chen Hu is too lazy to listen, but the tourists in the live broadcast room are all annoyed, this dog-day cow will actually come out on top, it's really hateful!

It wasn't long before a few gray and white moths flew over and fluttered in front of their lamps, and the visitors were finally excited when they saw this, and Isabel said very seriously:

"Mulberry borer, one of the important pests of mulberry trees, will lay eggs on mulberry trees, and then pass through ......"

Chen Hu looked at Isabel, while explaining, while recording, I have to admire this foreign girl, if this is an ordinary girl, seeing these heavenly cows, moths and the like, I am afraid that she would have screamed in fright.

In the end, it is a doctor of zoology, not to mention the amount of knowledge, even this courage is extraordinary, and then, under Isa's signal, Chen Hu adjusted the spectrum of the lamp to blue.

After a while, countless mosquitoes flew over, and even Chen Hu could see that his scalp was numb, and then there was a white light, which once again attracted some lamp moths, stem borers, and so on.

These are attracted by insects with phototaxis, and in this process, the barrage in the live broadcast room has never stopped.

"Fancy Foot Picking Youth: Do you dare to attract the shell Lang over?

"Donkey who doesn't eat meat: The shell Lang has phototaxis?

"Xin Qian Baoding: The dung shell lang is also called dung beetle, and it is not clear whether it has phototaxis, but one of them, the one-horned stinky dung beetle, is phototaxis. ”

"Donkey who doesn't eat meat @ Xin Qian Bao Ding: No picture hanging! Lao Tzu doesn't believe it!"

"Red Dust Forever: Unbelief +1"

"Brother Big Mao: +2 if you don't believe it"

……

Obviously, a fierce war of words has been triggered in the live broadcast room, and the lamp tube in Chen Hu's hand that is emitting white light does not take long to attract a dung beetle with a hard shell to fly over.

It is the legendary shell lang who likes to drill elephant feces and rolling balls, and the appearance of this scene immediately brought the war of words in the live broadcast room to an end.

Seeing this, Chen Hu couldn't help but smile, so hearing is false, seeing is believing, and when you don't see the truth, don't make a conclusion too early, especially in nature.

But human beings are a very face-saving high-level animal, even if they see the real image, they may not admit it, although the war of words is over, but the barrage has not stopped.

"No one loves it: do you see it?

"Bumpman: Does this face hurt?"

"Donkey who doesn't eat meat: it hurts a yarn! You say it's a shell? I'm going to say it's a beetle!"

"Red Dust Forever: That's right! Unless you can prove that the insect is a dung beetle, we still don't believe it!"

"Brother Da Mao: If you don't believe +1, see what you can do!"

"Old popsicle big popsicle: this is not simple, let the tiger master pull a lump of poop, and you will know if you confirm it!"

"When you read a book, you will cry and laugh: yes! The tiger master pulled the poop and slapped them in the face!"

"Water Cold and Brittle: Pull Poop +1"

……

Chen Hu's face darkened instantly, but in the night, it didn't look very obvious, but the words of these fans made him feel bad.

If you are fighting with words, you are fighting with words, what are you doing involving Lao Tzu? Pull your sister's poop! If it weren't for Isabel beside him, Chen Hu would definitely be scolding.

Fortunately, when Isha saw the shell lang, she couldn't help but explain:

"Dung beetles, which can use the phenomenon of moonlight polarization to locate to help feed, have a certain phototaxis, and there are more than 20,000 species of dung beetles in the world...... Most dung beetles are dung-eating, feeding on animal dung and have the title of 'scavengers of nature'. ”

As soon as these words came out, a new round of war of words was finally shattered, but whether it was a winner or a loser, they were a little disappointed in their hearts, after all, they didn't see the picture of the tiger master pulling poop to attract the shell lang.

Seeing this, Chen Hu exhaled, and just almost spurted out a mouthful of old blood, and then accompanied Isabiel to continue to attract insects with a spectrum, and after about an hour, the two used five different spectra in a row, and finally finished studying the insects in this area.

[Chain Quest: The host successfully helped Dr. Isha complete the 'Phototaxis Insects' research project and was rewarded with 1000 experience points.] 】

Hearing the system prompt, Chen Hu's mood suddenly improved a lot, and then he looked at Isabel and asked with a smile:

"Shall we go back to sleep?"

……