[Syrphidae] Efficiency of trapping methods for flowerflies
daniele sommaggio
dsommaggio at tiscalinet.it
Fri Jun 3 00:35:46 BST 2005
Hello
during the last few years I and Burgio compared Malaise trap and
chromotropic trap (both with water and glue) in several different sites. In
all case we note that the two tecniques are not similar. Malaise trap are
much more efficency but they generally understimate some species and in
particular Eristalis sp. and S. pipiens. Recently we tried also to used
Symphyta as bioindicators in asssociation with hoverflies. Discussing with
specialist from Italy, he confirmed that also on Symphyta populaton, Malaise
trap understimate some genera, such as Macrophya, which show territoriality
like in example in Ersitalis.
Daniele
----- Original Message -----
From: "Francis Gilbert" <Francis.Gilbert at nottingham.ac.uk>
To: <syrphidae at nottingham.ac.uk>; <cthompson at sel.barc.usda.gov>
Sent: Wednesday, June 01, 2005 8:53 AM
Subject: Re: [Syrphidae] Efficiency of trapping methods for flowerflies
there are a number of studies done in Germany (and published in German) that
specifically compare various trapping methods for syrphids, and also
elsewhere in Europe. For example:-
Pompé T & Cölln K 1993 [ Malaise traps as a method of short-term faunal
recording, illustrated by the hoverflies (Diptera, Syrphidae) of the
district of Daun/Eifel ] Malaisefallen als Methode zur kurzfristigen
Faunenerfassungdargestellt am Beispiel der Schwebfliegen (Diptera:
Syrphidae) des Landkreises Daun/Eifel. Verhandlungen der westdeutscher
Entomologentag. Düsseldorf. 1991 101-108
Precht A & Cölln K 1996 b [ On the specificity of location of Malaise-traps:
a study on hoverflies (Diptera, Syrphidae) ] Zum Standortbezug von
Malaise-Fallen: eine Untersuchung am Beispiel der Schwebfliegen (Diptera:
Syrphidae) Fauna Flora Rheinland-Pfalz 8 449-508
Stollar S 1973 b [ The effectiveness of using the fixed Malaise trap for
catching insects with special reference to the catching of hoverflies
(Diptera, Syrphidae) ] 104-106 in Seminar on methods used in the study of
Diptera of economic importance Z Radosova (ed) Prague (source RAE 62:4178)
in Cz with a german summary
In English there is Henry Disney et al's work, that is very nice.
Disney RHL, Erzinclioglu Y, Henshaw D, Howse D, Unwin D, et al 1982
Collecting methods and the adequacy of attempted faunal surveys, with
reference to the Diptera Field Studies 5 607-621
Francis
Dr Francis Gilbert
(on sabbatical in Egypt from 25th Feb 2005)
Info: http://www.nottingham.ac.uk/biology/gilbert
Website http://www.nottingham.ac.uk/~plzfg
Egyptian-British Biological Society
http://www.nottingham.ac.uk/~plzfg/EBBSoc/ebbsoc.html
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