Ticket #3574 (new)

Opened 5 months ago

Rid your laundry machine of mold for free

Reported by: "Laundry Machine Cleaners" <LaundryMachineCleaners@…> Owned by:
Priority: normal Milestone: 2.11
Component: none Version: 3.8.0
Severity: medium Keywords:
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Rid your laundry machine of mold for free



Unlike most wasps which are most active during the early morning, V. orientalis is unique in showing a peak of activity during the middle of the day. Oriental hornets dig their nests underground by picking up soil in their mandibles, flying a short distance, dropping the soil, and returning to the nest to continue digging. The hornet's digging is correlated with insolation (solar energy). The more insolation, the more active the hornet. This daytime digging behavior of V. orientalis may be possible because of the ability of its cuticle to harvest solar energy.

The cuticle of the Oriental hornet contains yellow pigment that protects the cuticle from harmful UV radiation from the sun. The brown segments of the hornet's body contain melanin, which serves a similar purpose. The brown cuticle is composed of about 30 layers, the thickness of which increases from interior to exterior. The brown melanin pigment is found in these layers. The yellow cuticle is composed of 15 layers that contain yellow pigment. The yellow stripe contains xanthopterin in barrel-shaped granules.
Electric potential
Enzyme activity in the layer of yellow xanthopterin granules was demonstrated to be higher in hornets kept in dark environments and lower in those exposed to ultraviolet (UV) light. Measuring the electric voltage between the hypocuticle and the exocuticle of the yellow stripe shows a negative electric potential at the hypocuticle with respect to the positive exocuticle. If the yellow stripe is exposed to light, the potential difference between light and dark conditions increases. In dark conditions, the stripe decreases in electric potential. Pterins have a role in photoreception and phototransduction of near-UV light to blue light and pterins may play a role in photosynthesis. Some of the same researchers speculate that this is the energy for the heat organ (see #Thermo

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