From ehnelson at berkeley.edu Mon Aug 22 21:01:20 2011 From: ehnelson at berkeley.edu (Erik Nelson) Date: Mon, 22 Aug 2011 13:01:20 -0700 Subject: [Syrphidae] Pollen retention and movement of hoverflies In-Reply-To: <805F2082D37DF147BE0D9EB60EBECD4D9E5B2F@kwek.ic.uva.nl> References: <903e64a243d72c6e0290262e536110ce@berkeley.edu> <805F2082D37DF147BE0D9EB60EBECD4D9E5B2F@kwek.ic.uva.nl> Message-ID: <4E52B590.7040801@berkeley.edu> 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 L?vei et al, 1998: Dispersal and barriers? M. fasciatum Pan traps, gut pollen Schneider, 1948 (cited in L?vei 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 From xmengual at gmail.com Mon Aug 22 22:26:08 2011 From: xmengual at gmail.com (ximo mengual sanchis) Date: Mon, 22 Aug 2011 17:26:08 -0400 Subject: [Syrphidae] Re: Pollen retention and movement of hoverflies In-Reply-To: References: <903e64a243d72c6e0290262e536110ce@berkeley.edu> <805F2082D37DF147BE0D9EB60EBECD4D9E5B2F@kwek.ic.uva.nl> <4E52B590.7040801@berkeley.edu> Message-ID: > > Hi Erik, > > It's not only about movement but also talks about pollination: > http://onlinelibrary.wiley.com/doi/10.1111/j.1472-4642.2011.00757.x/abstract > > Not focused only on Syrphidae but I think you may be interested on. > > Cheers, > > Ximo > ******************************************************** Dr. Ximo Mengual Research Entomologist (Research Associate) Systematic Entomology Lab., USDA c/o National Museum of Natural History PO Box 37012, MRC-0168 Washington, D.C. 20013-7012 Phone: +1 (202) 633-1004 e-mail: xmengual at gmail.com http://entomology.si.edu/StaffPages/MengualJ.html For courier (FedEx, DHL, etc.): Smithsonian Institution National Museum of Natural History (NHB) Department of Entomology 10th & Constitution NW Phone: +1 (202) 633-1004 Washington, DC 20560-0168 -------------- next part -------------- An HTML attachment was scrubbed... URL: From hondelmann at IPP.UNI-HANNOVER.DE Tue Aug 23 10:29:42 2011 From: hondelmann at IPP.UNI-HANNOVER.DE (Peter Hondelmann) Date: Tue, 23 Aug 2011 11:29:42 +0200 Subject: [Syrphidae] Re: Pollen retention and movement of hoverflies In-Reply-To: <4E52B590.7040801@berkeley.edu> References: <903e64a243d72c6e0290262e536110ce@berkeley.edu> <805F2082D37DF147BE0D9EB60EBECD4D9E5B2F@kwek.ic.uva.nl> <4E52B590.7040801@berkeley.edu> Message-ID: <4E537306.2010700@IPP.UNI-HANNOVER.DE> 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 > L?vei et al, 1998: Dispersal and barriers? M. fasciatum Pan traps, gut > pollen > Schneider, 1948 (cited in L?vei 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