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Most users ever online was 248 on Wed Dec 12, 2007 11:53 pm


Life span?

 
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AngieT



Joined: 15 Aug 2006
Posts: 52
Location: Poole, Dorset, UK

PostPosted: Thu Oct 04, 2007 12:56 am    Post subject: Life span? Reply with quote

Question Could anyone tell me how long hoverflies live (if it can be generalised)? I was wondering if the pair of Helophilus pendulus that I saw in the garden a couple of days ago were the same ones that were there a month or so ago.
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Ian Wynne



Joined: 16 Oct 2007
Posts: 4

PostPosted: Tue Oct 16, 2007 1:17 am    Post subject: Reply with quote

Well, I don't know off-hand (re: H. pendulus) but I did once do a mark-recapature experiment with this species and there was a good deal of 'turnover' of individuals on a daily basis. So though it is possible, I doubt if you are seeing same individuals. I have the data somewhere, so I will look it it up and get back to you.
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AngieT



Joined: 15 Aug 2006
Posts: 52
Location: Poole, Dorset, UK

PostPosted: Tue Oct 16, 2007 3:42 pm    Post subject: Still here... Reply with quote

Ah yes, thank you.
I actually have one of these hovers in the garden today, so I suppose it would be expecting a lot for it to be the same one from all that time (relatively speaking!) ago. On the other hand, there have been so few hovers in the garden this year that I would be surprised if there were more than two of them in the area!
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Roger K.A. Morris



Joined: 06 Nov 2005
Posts: 1583

PostPosted: Sun Oct 28, 2007 11:19 pm    Post subject: Hoverfly lifespan Reply with quote

Hello Angie

Stuart and I did some work a few years ago on Volucella - the most long-lived went to six weeks but the bulk went no more than about 3 weeks - this probably represents what might be expected for bigger hoverflies.

Regards

Roger
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AngieT



Joined: 15 Aug 2006
Posts: 52
Location: Poole, Dorset, UK

PostPosted: Mon Oct 29, 2007 3:13 pm    Post subject: Life-span Reply with quote

Very Happy Thank you.
That's interesting.
And encouraging too, as I suppose it means that there have been a few more hovers in the garden than I had thought!
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