[Syrphidae] Re: Pollen retention and movement of hoverflies

[Peter Hondelmann]

Hey Erik,

here are some other sources.

Two oral presentations that might be interesting, though I'm not sure if 
the results were published elsewhere (but abstracts from the 
presentations are available):

Yvonne Golding &  Malcolm Edmunds:
A novel method to investigate the pollen diets of hoverflies (Diptera: 
Syrphidae).
II International Symposium on the Syrphidae. Biodiversity and 
Conservation 16-19th June 2003, Alicante, Spain

W.H.O. Ernst:
Pollen supply and feeding preferences of syrphids in shrub/herb 
vegetation boundary by feces analysis.
3rd  International Symposium on Syrphidae 2 – 5 September 2005, Leiden


and a paper:
Bribosia E, Bylemans D, Migon M, van Impe G.:
Internal labelling of the eggs of the aphidophagous hoverfly Episyrphus 
balteatus (De Geer) (Diptera: Syrphidae) with a fluorescent dye.
Commun Agric Appl Biol Sci. 2005;70(4): 725-31.

If someone has a pdf of the last, I'd be interested in, too.

Best wishes
Peter



schrieb Erik Nelson:
> Dear colleagues,
>
> I have two questions for you.
>
> (1) How long do pollen grains stay in a syrphid's digestive tract? In 
> other words, what is a syrphid's gut retention time for pollen? My 
> reason for asking is that I want to calculate syrphid movement rates 
> from distance and time.If syrphids retain pollen for (say) 8 hours, 
> that may be the best value to use for “time”. Please inform me of any 
> existing data sets or journal articles.
>
> (2) I want to summarize existing studies that measure movement by 
> hover flies. Can you recommend any published studies that should be 
> added to the list below?
>
> Thank you,
>
> Erik Nelson
> University of California, at Berkeley
>
>
> ============List of studies that measure movement by hover 
> flies==============
> -----Study -------------------------------------- Species 
> ---------------------------- Methods ------------
> Wratten et al. 1995, Phenology and ecology … M. novaezelandiae Visual 
> observations
> Wratten et al. 1995, Phenology and ecology … M. fasciatum Visual 
> observations
> Wratten et al. 2003, Field boundaries… E.balteatus and M. corollae Pan 
> traps, gut pollen
> Wratten et al. 2003, Field boundaries… M. fasciatum Pan traps, gut pollen
> Hickman et al. 2005: Effect of hunger… E.balteatus Pan traps, gut pollen
> Bowie, 2001: Ecology and morphology … A. ventralis Pan traps, gut pollen
> Lövei et al, 1998: Dispersal and barriers… M. fasciatum Pan traps, gut 
> pollen
> Schneider, 1948 (cited in Lövei 1998): Beitrag zur … Scaeva pyrastri 
> Pan traps, gut pollen
> Arrignon et al., 2007: Modelling the overwintering … E.balteatus 
> simulation Individual-based simulation model
> Freeman Long et al., 1998: Beneficial insects move… Toxomerus sp. and 
> others Sticky cards, rubidium labelled flowers
> Laubertie, 2007 thesis, p. 61 M. novaezelandiae Pan traps, gut pollen
> Laubertie, 2007 thesis, p. 61 M. fasciatum Pan traps, gut pollen
> Harwood et al. 1994, Field margins … E.balteatus Pan traps, gut pollen
>
>
> _______________________________________________
>
>

-- 

Dr Peter Hondelmann

Leibniz University Hannover
Institute of Plant Diseases and Plant Protection
Herrenhaeuser Str. 2
30419 Hannover
Germany

Tel.: +49(0)511/762-3144
Fax.: +49(0)511/762-3015
E-Mail: hondelmann at ipp.uni-hannover.de