释义 |
Definition of frass in English: frassnoun frasfras mass noun1Fine powdery refuse or fragile perforated wood produced by the activity of boring insects. 蛀屑 Example sentencesExamples - By the end of the experiment, an average of 25% of the cotyledon of Q. alba acorns had been reduced to frass, while there was no apparent damage in any of the final sample of RO acorns.
- We felt the fine, sharply scented frass of a carpenter ant colony with our fingertips.
2The excrement of insect larvae. 幼虫粪 Example sentencesExamples - Often dark black pellets of frass will be in the nest with the caterpillar.
- This frass is considerably different from the pelletized frass left by drywood and dampwood termites.
- On closer inspection, obvious discolored wounds can often be seen at the base of the plant and stems, and at the wounds, masses of a yellow-green grainy substance known as frass - the hygienic German word for caterpillar excrement.
- As a bit of frass starts to emerge from the caterpillar, it pushes a hinged plate against a ring of blood vessels surrounding the anus.
- I measured digestibility as the proportion of eaten plant biomass not deposited as frass by 0800 the following morning.
- They seemed to hunt by scent, ignoring nests with faux frass in the form of small black glass beads.
- After collecting, we removed litter from litter bags and gently cleaned it of roots, invertebrates, frass, and soil.
- The chemical analyses of the body and frass of Blepharida flavocostata revealed almost no match to the constituents found in B. biflora.
- Thus removal of cues for natural enemies is likely to have been an important selective force in the evolution of frass ejection behavior in shelter-dwelling larvae.
- Identifying the presence of frass coupled with damage is a strong indication of the presence of a caterpillar, or in some cases, beetle larvae.
- The notion that Tunisian blue-striped caterpillar frass could help you burn fat overnight while you sleep, strengthen muscles without exercise, erase wrinkles and improve your memory is too tempting for some folks to resist.
- One downside of group dining is that chemical signals from the larvae and their frass can attract parasitoids.
- Keep the grass mowed or mulched around the trunks of your fruit trees and watch for the telltale rusty frass of borers - these larval worms can be dug out with a sturdy wire.
- Larvae that had consumed leaf material frequently had green coloured alimentary canals, green frass and a portion of the leaf surface was scarred.
- As larvae feed, they spin silken threads, trapping the dying florets and their frass, giving the sunflower head a trashy appearance.
OriginMid 19th century: from German Frass, from fressen 'devour'. Definition of frass in US English: frassnounfras 1Fine powdery refuse or fragile perforated wood produced by the activity of boring insects. 蛀屑 Example sentencesExamples - We felt the fine, sharply scented frass of a carpenter ant colony with our fingertips.
- By the end of the experiment, an average of 25% of the cotyledon of Q. alba acorns had been reduced to frass, while there was no apparent damage in any of the final sample of RO acorns.
- 1.1 The excrement of insect larvae.
幼虫粪 Example sentencesExamples - Often dark black pellets of frass will be in the nest with the caterpillar.
- One downside of group dining is that chemical signals from the larvae and their frass can attract parasitoids.
- On closer inspection, obvious discolored wounds can often be seen at the base of the plant and stems, and at the wounds, masses of a yellow-green grainy substance known as frass - the hygienic German word for caterpillar excrement.
- The notion that Tunisian blue-striped caterpillar frass could help you burn fat overnight while you sleep, strengthen muscles without exercise, erase wrinkles and improve your memory is too tempting for some folks to resist.
- Thus removal of cues for natural enemies is likely to have been an important selective force in the evolution of frass ejection behavior in shelter-dwelling larvae.
- This frass is considerably different from the pelletized frass left by drywood and dampwood termites.
- As a bit of frass starts to emerge from the caterpillar, it pushes a hinged plate against a ring of blood vessels surrounding the anus.
- Keep the grass mowed or mulched around the trunks of your fruit trees and watch for the telltale rusty frass of borers - these larval worms can be dug out with a sturdy wire.
- The chemical analyses of the body and frass of Blepharida flavocostata revealed almost no match to the constituents found in B. biflora.
- Larvae that had consumed leaf material frequently had green coloured alimentary canals, green frass and a portion of the leaf surface was scarred.
- Identifying the presence of frass coupled with damage is a strong indication of the presence of a caterpillar, or in some cases, beetle larvae.
- After collecting, we removed litter from litter bags and gently cleaned it of roots, invertebrates, frass, and soil.
- I measured digestibility as the proportion of eaten plant biomass not deposited as frass by 0800 the following morning.
- As larvae feed, they spin silken threads, trapping the dying florets and their frass, giving the sunflower head a trashy appearance.
- They seemed to hunt by scent, ignoring nests with faux frass in the form of small black glass beads.
OriginMid 19th century: from German Frass, from fressen ‘devour’. |