From owner-dros@hgmp.mrc.ac.uk Fri May 30 15:59:38 2003 Return-Path: X-Original-To: dros-outgoing Received: from localhost (localhost [127.0.0.1]) by mercury.hgmp.mrc.ac.uk (Postfix) with SMTP id 8AD607D0DA for ; Fri, 30 May 2003 15:59:36 +0100 (BST) X-Original-To: dros-list@hgmp.mrc.ac.uk Received: from localhost (localhost [127.0.0.1]) by mercury.hgmp.mrc.ac.uk (Postfix) with ESMTP id 594FA7D254 for ; Fri, 30 May 2003 15:59:35 +0100 (BST) Received: by mercury.hgmp.mrc.ac.uk (Postfix, from userid 6020) id 2F6D47D0DA; Fri, 30 May 2003 15:59:34 +0100 (BST) X-Original-To: bionet-drosophila@net.bio.net Received: from localhost (localhost [127.0.0.1]) by mercury.hgmp.mrc.ac.uk (Postfix) with ESMTP id DA36E7D34E for ; Fri, 30 May 2003 13:28:43 +0100 (BST) Received: by mercury.hgmp.mrc.ac.uk (Postfix, from userid 60001) id 050047D2A6; Fri, 30 May 2003 13:28:42 +0100 (BST) To: bionet-drosophila@net.bio.net From: b1wertheim@yahoo.com (bregje wertheim) Newsgroups: bionet.drosophila Subject: Re: Drosophila attractant Organization: BIOSCI/MRC Human Genome Mapping Project Resource Centre Message-ID: <20030530122839.17914.qmail@web9506.mail.yahoo.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-1397004405-1054297719=:17084" X-Original-To: dros@net.bio.net X-Received: from localhost (localhost [127.0.0.1]) by mercury.hgmp.mrc.ac.uk (Postfix) with ESMTP id 0EAEF7D34E for ; Fri, 30 May 2003 13:28:42 +0100 (BST) X-Received: from web9506.mail.yahoo.com (web9506.mail.yahoo.com [216.136.129.20]) by mercury.hgmp.mrc.ac.uk (Postfix) with SMTP id 593147D2A6 for ; Fri, 30 May 2003 13:28:40 +0100 (BST) X-Received: from [128.40.79.179] by web9506.mail.yahoo.com via HTTP; Fri, 30 May 2003 05:28:39 PDT X-To: dros@net.bio.net X-Cc: KevMoran@aol.com Date: Fri, 30 May 2003 15:59:34 +0100 (BST) Sender: owner-dros@hgmp.mrc.ac.uk Precedence: bulk --0-1397004405-1054297719=:17084 Content-Type: text/plain; charset=us-ascii Fermenting substrates that are suited for oviposition, such as banana, melon etc, serve well in attracting (frugivorous) Drosophila. Rotting cucumbers seems to attract many fungivorous fruit flies. The fruits can be dipped in yeast (or beer!) to enhance their attractivity. Additionally, most fruit flies possess aggregation pheromones, that can strongly enhance the catch of both males and females on these breeding substrates. These pheromones are species-specific, but often contain a general component that attracts most members of a species group. For example, many members of the melanogaster-species group respond strongly to Z-11-octadecenyl acetate. The aggregation pheromones of 27 species of Drosophila were chemically identified, mostly by R.J. Bartelt, A.M. Schaner and co-workers. The aggregation pheromones are commercially available from chemical firms, and small alliquots (5-15 ug) can easily triple the numbers of fruit flies on these substrates in field experiments (from own experience). The pheromones should ideally be stored in a freezers, but could remain stable for several weeks-months under RT conditions. I hope this is of help? Regards, Bregje Wertheim Dept. of Biology, UCL --------------------------------- Do you Yahoo!? Free online calendar with sync to Outlook(TM). --0-1397004405-1054297719=:17084 Content-Type: text/html; charset=us-ascii
Fermenting substrates that are suited for oviposition, such as banana, melon etc, serve well in attracting (frugivorous) Drosophila. Rotting cucumbers seems to attract many fungivorous fruit flies. The fruits can be dipped in yeast (or beer!) to enhance their attractivity. Additionally, most fruit flies possess aggregation pheromones, that can strongly enhance the catch of both males and females on these breeding substrates. These pheromones are species-specific, but often contain a general component that attracts most members of a species group.  For example, many members of the melanogaster-species group respond strongly to Z-11-octadecenyl acetate. The aggregation pheromones of 27 species of Drosophila were chemically identified, mostly by R.J. Bartelt, A.M. Schaner and co-workers. The aggregation pheromones are commercially available from chemical firms, and small alliquots (5-15 ug) can easily triple the numbers of fruit flies on these substrates in field experiments (from own e xperience). The pheromones should ideally be stored in a freezers, but could remain stable for several weeks-months under RT conditions.
I hope this is of help?
Regards,
 
Bregje Wertheim
Dept. of Biology, UCL

 

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