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 Tephritid pheromones
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| John Smit |
Posted on 29-09-2007 12:35
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 Member Location: Utrecht Posts: 565 Joined: 05.10.04 |
Hi Jere, I'll try and dehydrate some in acetone, see if I can make them visible! Sounds interesting! Yes you'ld rather expect females to have such pouches distributing pheromones. However in these Teprhitid cases it is known that males protect possible oviposition-sites, therefore it will be handy for males to let their females know which capitula is defended for that particular species, especially if you have a male of a sibling species on the capitula next to you! John |
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| Ben Hamers |
Posted on 03-06-2008 07:03
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Member Location: Heerlen ( Holland ) Posts: 737 Joined: 16.12.04 |
Here are some pictures of males Tephritis cometa. I think it's visible that, as Kahis wrote, the "balloons" are inflatable. There were three males on a Cirsium of which the only one with balloons was clearly in charge. He was walking around, waving his wings and chasing the others. The two without balloons were inactive, only moving when attacked. This went on for an hour and then the situation became a bit complicated, as a second one "pumped up" his balloons and got in conflict with the other. A ritual took place which lasted several minutes. After that everything became quiet again and I couldn't really see if there was a winner. I neither saw a female during the whole event. Ben Hamers attached the following image:  [105.79Kb] Edited by Ben Hamers on 21-05-2012 19:00 |
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| ChrisR |
Posted on 03-06-2008 14:50
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 Super Administrator Location: Reading, England Posts: 7703 Joined: 12.07.04 |
Great photos Ben - I have moved it to the Diptera area as this is not parasitism 
Edited by ChrisR on 03-06-2008 18:17 |
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| Ben Hamers |
Posted on 03-06-2008 19:11
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Member Location: Heerlen ( Holland ) Posts: 737 Joined: 16.12.04 |
Thanks for moving the thread Chris. Title of the thread changed from "Passengers" to "Tephritid pheromones" Ben Edited by Ben Hamers on 03-06-2008 19:12 |
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| Paul Beuk |
Posted on 03-06-2008 19:43
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 Super Administrator Location: Netherlands Posts: 19403 Joined: 11.05.04 |
Another example is HERE.
Paul - - - - Paul Beuk on https://diptera.info |
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| Ben Hamers |
Posted on 21-07-2008 12:33
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Member Location: Heerlen ( Holland ) Posts: 737 Joined: 16.12.04 |
These are two males and a female of Terellia tussilaginis. It seemed that one male protected the female during the oviposition. The second male tried to chase his rival away, but after a struggle which lasted several minutes the female flew away with the first male on her back. Ben Ben Hamers attached the following image:  [67.79Kb] Edited by Ben Hamers on 21-05-2012 19:01 |
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| Nosferatumyia |
Posted on 22-07-2008 00:41
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 Member Location: Posts: 3495 Joined: 28.12.07 |
incredible pix! thanx! it is not so common to see any comprehensive data on male pheromone emanation in the Tephritinae.
Val |
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