Haemoglobin or Plastron Gas?

[smudger564]

Hi All, I'm trying to figure this out and need your help. When flies emerge and begin their transformation from a pupae to fly. Do they use Blood to help in their bodily change or Plastron gas, which occurs in them naturally.

The way I understand this so far is, at the sub-surface point in the meniscus or surface film, they force their way through, at the same time their bodies undergo radical changes.

Blood is pumped around the body more quickly which induces the Plastron Gas in to gaps in the skin layers, forcing them apart. The weakest point is at the top of the thorax which splits and allows the fly to emerge wings and head first.

Would this statement be correct?

Best regards

smudger564

[arkle]

I think you'll find that the only aquatic insect that we imitate that has haemoglobin in the early to mid stages of the chironamidae when it transforms from a bloodworm to an emergent pupae.

[emerger1981]

Originally Posted by smudger564

Hi All, I'm trying to figure this out and need your help. When flies emerge and begin their transformation from a pupae to fly. Do they use Blood to help in their bodily change or Plastron gas, which occurs in them naturally.

The way I understand this so far is, at the sub-surface point in the meniscus or surface film, they force their way through, at the same time their bodies undergo radical changes.

Blood is pumped around the body more quickly which induces the Plastron Gas in to gaps in the skin layers, forcing them apart. The weakest point is at the top of the thorax which splits and allows the fly to emerge wings and head first.

Would this statement be correct?

Best regards

smudger564

pretty much.. can i ask why your asking?

[smudger564]

Hi, Because if it is Blood and not Plastron Gas then that would explain Red Trigger points working on flies. Other colours have a lesser effect.

Regards

smudger564

[emerger1981]

i would add a link but its late.. youtube, midges chapter 5 of the bugs of the underworld dvd,, crackin vid!

[smudger564]

I'll have a look at it mate. thank you.

Regards

smudger564