【延伸閱讀】「蝗蟲們密密麻麻地停在建築物外牆上，就像替大樓塗上一層厚厚的濕泥。」
蟲蟲危機2：蝗災惡夢 東非、中東、南亞全淪陷 | DQ 地球圖輯隊@world_Yam - 蟲蟲蟲蟲蟲蟲蟲。 繼東非之後，巴基斯坦、印度等國也淪陷，最極端的情況甚至足以遮...

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我被文章裡的蟲蟲圖嚇到了

啊對...那張圖蟲有點大隻 (覆蓋陷阱卡

為什麼我覺得有點可愛

咦，剛剛去查了一下蝗蟲by wiki
However, under suitable conditions of drought followed by rapid vegetation growth, serotonin in their brains triggers a dramatic set of changes: they start to breed abundantly, becoming gregarious and nomadic (loosely described as migratory) when their populations become dense enough.
應該是乾旱會導致蝗災發生才對？

還是說這是品種差異，可能要找生物專家幫忙解惑QQ

krwsic: under suitable conditions of drought followed by rapid vegetation growth

這句可以擴增理解為沙漠蝗蟲wiki條目中的這一段：

The change from an innocuous solitary insect to a voracious gregarious one normally follows a period of drought, when rain falls and vegetation flushes occur in major desert locust breeding locations. The population builds up rapidly and the competition for food increases.

另外也可參考世界氣象組織的說明 (見文件中Figure 18)

Whereas locust numbers decrease during droughts, locust outbreaks often follow floods and cyclones. Local increases in rainfall can favour breeding conditions for locusts and determine the size of feeding areas, leading to changes in plague development.

Weather and Desert Locusts

以及農糧署的解說：

- The Desert Locust nearly always lays its eggs in soil that is wet enough to allow the eggs to absorb sufficient moisture to complete their development.

- The rain associated with egg laying usually produces sufficient vegetation for the hoppers to develop.

- Hopper development occurs more quickly at high temperatures than at low temperatures.

- There is no evidence that hoppers in relatively dry vegetation develop more slowly.

見Egg development和Hopper development的圖解，可發現沙漠蝗蟲的卵需要足夠的溼氣以供孵化；土壤溫度在攝氏25-37度的區間，越高溫卵越快孵化，不過溫度太高的話也會造成孵化失敗風險上升。

當卵孵化後，在攝氏24-32度的氣溫區間，隨著溫度升高，蝗蟲發育得越快，不過這種關聯性相較前述狀況來得更低了 (因為蝗蟲可以透過曬太陽或躲在陰影處，一定程度上控制牠的體溫)。

Desert Locust Guidelines

以上，如果有疏漏的部分也歡迎補充~

感謝補充～