Thread subject: Diptera.info :: What's the problem?

Posted by Roger Thomason on 29-05-2009 21:10
#1
Found this Platycheirus manicatus in the garden today...any idea what would cause the swelling/blister on its eye?
That's got to be sore...do flies feel pain?

Posted by Roger Thomason on 29-05-2009 21:11
#2
Ouch.....Frown

Posted by Paul Beuk on 29-05-2009 21:26
#3
A drop of something. Perhaps honeydew?

Posted by Roger Thomason on 30-05-2009 00:58
#4
Poor photo, but from the front it looks like a blister or something..

Posted by Tony Irwin on 30-05-2009 10:50
#5
Never seen anything like this - it looks like there is some of the eye missing. It's possibly a developmental problem, but perhaps an accident with some caustic liquid?
I should think it's aware that there's a problem, but generally I don't credit flies with enough brain capacity to register pain as such. Otherwise I'd have to stop collecting them ... Frown

Posted by Andre on 01-06-2009 10:01
#6
So let's presume flies don't feel pain, so we can keep pinning them.

Did anyone ever register the amount of stress-hormones in a fly, while being killed in a bottle? Frown

Posted by Paul Beuk on 01-06-2009 10:24
#7
Something hypertonous enough might be able to extract the liquid contents from the head causing the eye to collaps?