[Syrphidae] Re: abundance of Eristalis larvae in microhabitat

Francis Gilbert Francis.Gilbert at nottingham.ac.uk
Mon Jan 28 19:42:08 GMT 2013

hi Grigory

I have not come across any proper estimates of larval densities in the field for Eristalis tenax. There are some for other Eristalis  and Eristalinus species in Egypt from monthly surveys in, for example, sewage settling ponds. These vary from about 3 to about 60 larvae per 900 cm² surface in a gravel-bed hydroponic system where the water is 30 cms deep. This is about 30 to 650 larvae per m² water surface.

The reference for this:
Mahmoud MAM (1997) Ecological and microbiological studies on syrphid larvae inhabiting sewage water. MSc Thesis, Faculty of Science, Suez Canal University, Egypt. 149 pp. (in English with arabic abstract)


Dr Francis Gilbert
Associate Professor of Ecology, School of Biology
University Park, University of Nottingham, Nottingham NG7 2RD, UK
Tel: +44 (0) 115 951 3215
website: www.nottingham.ac.uk/~plzfg

From: syrphidae-bounces at lists.nottingham.ac.uk [mailto:syrphidae-bounces at lists.nottingham.ac.uk] On Behalf Of Popov Grigory
Sent: 28 January 2013 17:49
To: syrphidae at lists.nottingham.ac.uk
Subject: [Syrphidae] abundance of Eristalis larvae in microhabitat

Hi, friends,

Please, can anyone tell what is the maximum (and "normal") density of Eristalis tenax larvae in nature microhabitat (may be with literature references)?
In "The Natural History of Hoverflies" there are no...

Best regards, Grigory Popov.

Grigory V. Popov, Dr, PhD
senior research worker
Section of Population Genetics
Donetsk Botanic Gardens
National Academy of Sciences of Ukraine
Illicha av. 110, 83059 Donetsk
office +38062-2941280 (fax)
mobile +38050-5638552
e-mail mbu at yandex.ru
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