Скачать или смотреть 5 WAYS Arum Maculatum TRAPS Insects with its SMELL

Arum maculatum (Lords-and-Ladies) traps insects using a combination of smell, heat, and structural deception. Its fetid scent mimics rotting organic matter, luring flies into a floral trap where escape is temporarily impossible.

Here are 5 distinct ways this plant uses its smell and structure to trap and manipulate insects for pollination:

1. 🦠 Fetid Odour Mimics Rotting Organic Matter
The plant emits a strong, unpleasant smell resembling decaying flesh or dung, especially in the early evening.
This scent attracts female owl-midges (Psychoda phalaenoides) and other small flies that normally seek out decomposing material to lay eggs.
2. 🔥 Heat Amplifies the Scent
The spadix (central spike) generates metabolic heat, triggered by the hormone calorigen.
This heat volatilizes the scent compounds, making the smell more intense and detectable over longer distances.
3. 🪤 Slippery Floral Chamber Traps Insects
Flies enter through the spathe (hood-like structure) and slide past downward-pointing bristles into a smooth-walled chamber.
Once inside, escape is impossible until the plant releases them—ensuring they stay long enough for pollination.
4. 🍯 Nutrient Secretion Keeps Flies Occupied
Female flowers at the base of the spadix produce a nutritious stigmatic secretion.
Flies feed on this while unknowingly depositing pollen if they’ve visited another Arum maculatum previously.
5. 🌬️ Timed Release Ensures Cross-Pollination
After pollen is released from the male flowers, the bristles wilt, allowing flies to escape.
These pollen-laden insects are then likely to be trapped by another plant still in its receptive phase, completing the cross-pollination cycle.

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