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<div dir="ltr"><font face="Tahoma" color="#000000" size="2">Good afternoon,</font></div>
<div dir="ltr"><font face="tahoma" size="2"></font> </div>
<div dir="ltr"><font face="tahoma" size="2">I could do with some advice on my hoverflies! Thanks already for those who have already offered much useful advice on my first PhD experiemnt examining food chain lengths... this email list has proved invaluable.</font></div>
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<div dir="ltr"><font face="Tahoma" size="2">I have two new querries though if anyone could help:
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<div dir="ltr"><font face="Tahoma" size="2">I am raising Syrphus ribesii larvae and am keeping each larvae individually in small glass / plastic test tubes and provide them with a small leaf and lots of fresh aphids every day. I clean the tubes every day, and use
damp cotton wool to plug the ends of the tube. They are kept at 70% humidity, 16:8 hours light: dark.</font></div>
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<div dir="ltr"><font face="tahoma" size="2">1. My larvae are now 6 days old and I need to know if they have any requirements for successful development into pupae</font> - do they require something to stick too or do they need to hang upside down etc. Also
should I need to keep them moist throughout their pupae stage? </div>
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<div dir="ltr"><font face="times new roman">2. I have recently had many (less than 25%) of different age classes turn black and die. It appears on first glance like they have not discharged their gut... but I have no idea. Does anyone recognise these symptoms
or could provide advice or keeping more alive?</font></div>
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<div dir="ltr"><font face="times new roman">Thanks,</font></div>
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<div dir="ltr"><font face="times new roman">Matt Perkins</font></div>
<div dir="ltr"><font face="times new roman"></font> </div>
<div dir="ltr"><font face="times new roman">PhD Researcher</font></div>
<div dir="ltr"><font face="times new roman">Center for Ecology & Conservation</font></div>
<div dir="ltr"><font face="times new roman">University of Exeter,</font></div>
<div dir="ltr"><font face="times new roman">Cornwall Campus</font></div>
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