
n. 幼蟲的糞便;蛀屑
Frass of long-horned beetle larvae plays an important role in natural enemies searching for their cerambycid hosts.
長角甲蟲幼蟲的部分在尋找天敵的天敵中起着重要的作用。
The number of emergence holes and frass holes in weeping willows on both Banks of Qinhuai river are investigated.
調查了外秦淮河兩岸垂柳上光肩星天牛羽化孔、排糞孔的分布情況。
Frass of longhorned beetle larvae plays an important role in natural enemies searching for their cerambycid hosts.
天牛幼蟲排出的蟲糞所釋放的揮發性物質成為天敵搜尋天牛所在微栖境的重要化學信息物質。
Field tests showed that females gnawed significantly fewer oviposition scars on Pinus massoniana trees treated with hexane extracts of larval frass than on the control trees.
林間驅避試驗結果說明,幼蟲蟲糞的己烷提取物處理過的樹幹上的刻槽數明顯少于對照樹幹上的刻槽數,二者具有極顯著差異;
Frass是昆蟲學中的專業術語,指昆蟲幼蟲在取食或活動過程中排出的排洩物或殘留碎屑,常見于植物葉片、木材孔洞等昆蟲栖息處。這一物質通常由未被完全消化的植物纖維、木質素及代謝廢物組成,形态多為顆粒狀或粉末狀。
Frass的形成與昆蟲的攝食行為直接相關。例如,天牛幼蟲在蛀食樹木時,會将咀嚼後的木屑與排洩物混合排出,形成條狀或顆粒狀堆積物。這種物質不僅是昆蟲活動的痕迹證據,也反映了昆蟲與宿主植物的相互作用。
"Frass" 是一個昆蟲學領域的專業術語,具體含義和用法如下:
如需例句或更詳細用法,可參考《歐路詞典》 或專業昆蟲學文獻。
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