Caterpillar Defense: 'Freeze And Drop'

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Planter er de umiskendelige vindere.

Selv en nybegynder naturforsker kan fortælle en bi fra en hvep. Så burde ikke larver, der er uberørt af den førstnævnte, men ødelagt af sidstnævnte, også kunne gøre det? Åbenbart ikke.

Forskere ved universitetet i Würzburg i Tyskland opdagede, at bietarmormen, en berygtet plantebeskyttelse, viser den samme defensive opførsel mod bier som det gør mod hveps. Faktisk forhindrer den blotte tilstedeværelse af bier armyworms fra munching leaves.
Armorms, ligesom mange larver, har sansehår nær deres hoveder, der registrerer luftvibrationer, der er omrørt af hveps vinger. Når en veps nærmer sig, fryser en varslet larve og dræber planten. Afhængig af vepsarten undgår man således at blive spist eller modtage en injektion af hvepseæg i sin krop.
At være opmærksom på, at bierens vinge beats-frekvens svarer til hveps ", Jürgen Tautz og Michael Rostás studerede bete-armorms opførsel inden for telte, der indeholder afgrødeplanter samt biavlere fyldt med sukkervand. Bier kunne kun få adgang til halvdelen af ​​teltene, og forskerne fandt ud af, at larverne der spiste 60 til 70 procent mindre bladareal end i de "stille" telte. Energi, der spildes ved at falde som reaktion på en harmløs bi, er tilsyneladende godt brugt for at undgå muligheden for at blive en hvepost eller børnehave.
Med hensyn til planterne var de de umiskendelige vindere. Tværtimod, interspersing insekt-bestøvede planter med afgrøder kunne generere nogle positive buzz i skadedyrsbekæmpelse.

Forskningen blev beskrevet i tidsskriftet Nuværende biologi.

Caterpillar Defense: 'Freeze And Drop'

FAQ - 💬

❓ What defense mechanisms do caterpillars have?

👉 When their primary defenses fail, caterpillars have an arsenal of secondary defenses. These can be chemical (tasting bad), physical (stinging spines and hairs) or behavioral (thrashing, mimicking other creatures, retracting portions of their bodies to appear larger).

❓ What does a caterpillar use for Defence?

👉 Caterpillars use a diverse range of anti-predator defenses, including camouflage, making and hiding in shelters, mimicry, regurgitating, rolling, and biting. Some caterpillars also drop to the ground and hang themselves by a silk thread.

❓ Is caterpillar a military company?

👉 Caterpillar is the world's foremost manufacturer of engines, earthmoving, construction and materials-handling equipment. As a major supplier of military engineering equipment, Caterpillar offers a full earthmoving equipment and engine line to match mission requirements to include armor solutions.

❓ What is the defense mechanism of the parsley caterpillar?

👉 It's a surprising defense mechanism.Hidden in the caterpillar's head are two large, bright orange antenna or forked gland, called osmeterium. When agitated or in danger, the snake tongue-like gland shoots out towards the threat and emits a foul, spoiled cheese smell.

❓ Does a worm have a Defence mechanism?

👉 Earthworms are provided with innate, highly developed, and effective defense mechanisms against dangerous environmental microorganisms. The first mechanical–biological line of defense, that separates the body of annelids from the external environment is the tegument, composed of an epidermis and muscle layers.

❓ Do worms have a defense mechanism?

👉 The coelomic fluid of annelids exerts numerous biological activities that are involved in effective defense mechanisms against invaders. It was documented that it contains various antimicrobial factors like lysozyme37,38 and antimicrobial peptides.

❓ Why does caterpillar defense have a parts priority system?

👉 For the most urgent demands of contingency and wartime operations, Caterpillar Defense employs a parts priority system so orders for these operations are moved to the front of the line. All around the world, people put their lives on the line to ensure others get the energy, security and aid they need. For those people, we work.

❓ When is caterpillar defense ready to respond?

👉 During disaster response or aid delivery, wartime or peacetime, surge or rapid deployment — Caterpillar Defense is ready to respond to the needs of the operation. Look over the options listed below to learn more about our capabilities.

❓ Is caterpillar defense a DoD endorsement?

👉 The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement. Disaster response or aid delivery, wartime or peace time, surge or rapid deployment– Caterpillar Defense is ready to respond to the needs of the operation.

❓ What does caterpillar do?

👉 Caterpillar’s design, engineering and manufacturing capabilities produce a broad range of products for military forces and other government entities. The company offers groundbreaking and custom-modified equipment, engines for land and marine applications, power generation for wide-ranging applications and lifecycle solutions.


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