Gallery Links
Users Online
· Guests Online: 20

· Members Online: 0

· Total Members: 4,960
· Newest Member: Urs-Peter
Forum Threads
Theme Switcher
Switch to:
Last Seen Users
· Nosferatumyia00:19:48
· Carnifex01:00:59
· weia01:31:01
· Svavar01:33:36
· kevin_cheng01:43:32
· ESant02:08:07
· Mario Renden02:15:06
· Arthur van O...02:26:36
· blaauw702:42:47
· Volker03:22:08
Latest Photo Additions
View Thread
Diptera.info :: Miscellaneous :: General queries
Who is here? 1 guest(s)
 Print Thread
Sex differences in the phenology of Diptera
tristram
#1 Print Post
Posted on 30-05-2023 22:02
Member

Location: Reading, UK
Posts: 1329
Joined: 27.06.10

Does anyone know of any literature that deals with sex diferences in the phenology of Diptera?

The following two plots are based on specimens I collected near Reading, UK since 2014.
(Actually one specimen was collected in North Yorkshire)
tristram attached the following image:


[9.63Kb]
Edited by tristram on 30-05-2023 22:21
 
http://tristram.squarespace.com
tristram
#2 Print Post
Posted on 30-05-2023 22:05
Member

Location: Reading, UK
Posts: 1329
Joined: 27.06.10

The complete absence of males from the autumn generation is not something I expected.
tristram attached the following image:


[9.19Kb]
 
http://tristram.squarespace.com
tristram
#3 Print Post
Posted on 30-05-2023 22:18
Member

Location: Reading, UK
Posts: 1329
Joined: 27.06.10

It seems to me that this is evolutionarily unstable and raises interesting questions, such as:
Are the females that come out in the autumn reproducing asexually, or are they just wasting their time coming out at that time of year?
What is the mechanism that 'wakes up' the females in the autumn but does not 'wake up' the males?

I have found this, but it is not specific to Diptera):
Sex-Differences in Phenology: A Tinbergian Perspective
Cory T Williams, Helen E Chmura, Cole K Deal, Kathryn Wilsterman
Integrative and Comparative Biology, Volume 62, Issue 4, October 2022, Pages 980–997

Any pointers to any other relevant literature would be much appreciated.
Edited by tristram on 04-10-2023 19:00
 
http://tristram.squarespace.com
tristram
#4 Print Post
Posted on 04-10-2023 18:59
Member

Location: Reading, UK
Posts: 1329
Joined: 27.06.10

Eumea linearicornis also appears to have a female-only autumn generation (all specimens collected from the area of Readiing, UK since April 2014)
tristram attached the following image:


[21.39Kb]
 
http://tristram.squarespace.com
Fred Fly
#5 Print Post
Posted on 05-10-2023 06:23
Member

Location: Germany
Posts: 392
Joined: 19.07.11

I remember no paper on protrandry in Diptera at present accept some notes on phenology for single species. There are papers and book chapters of general entomology dealing with it. I think that almost all Brachycera are protandrous. In some cases mated females are living very long and could be the only hibernating sex occuring in the following spring.
Regards
Fred
 
Jump to Forum:
Similar Threads
Thread Forum Replies Last Post
Diptera ID Diptera (adults) 2 23-05-2024 13:45
Diptera larva? Diptera (eggs, larvae, pupae) 1 17-05-2024 12:36
Diptera ID? (Otites centralis female) Diptera (adults) 6 08-05-2024 14:28
Some diptera puparium, No = aphid parasitized by a wasp Diptera (eggs, larvae, pupae) 3 21-03-2024 18:29
Diptera Diptera (adults) 2 20-03-2024 22:28
Date and time
27 May 2024 23:23
Login
Username

Password



Not a member yet?
Click here to register.

Forgotten your password?
Request a new one here.
Temporary email?
Due to fact this site has functionality making use of your email address, any registration using a temporary email address will be rejected.

Paul
Donate
Please, help to make
Diptera.info
possible and enable
further improvements!
Latest Articles
Syrph the Net
Those who want to have access to the Syrph the Net database need to sign the
License Agreement -
Click to Download


Public files of Syrph the Net can be downloaded HERE

Last updated: 25.08.2011
Shoutbox
You must login to post a message.

07.03.24 00:01
Some flies preserved in ethanol and then pinned often get the eyes sunken, how can this be avoided? Best answer: I usually keep alcohol-collected material in alcohol

17.08.23 15:23
Aneomochtherus

17.08.23 13:54
Tony, I HAD a blank in the file name. Sorry!

17.08.23 13:44
Tony, thanks! I tried it (see "Cylindromyia" Wink but don't see the image in the post.

17.08.23 11:37
pjt - just send the post and attached image. Do not preview thread, as this will lose the link to the image,

16.08.23 08:37
Tried to attach an image to a forum post. jpg, 32kB, 72dpi, no blanks, ... File name is correctly displayed, but when I click "Preview Thread" it just vanishes. Help!

23.02.23 21:29
Has anyone used the Leica DM500, any comments.

27.12.22 21:10
Thanks, Jan Willem! Much appreciated. Grin

19.12.22 11:33
Thanks Paul for your work on keeping this forum available! Just made a donation via PayPal.

09.10.22 17:07
Yes, dipterologists from far abroad, please buy your copy at veldshop. Stamps will be expensive, but he, the book is unreasonably cheap Smile

Render time: 0.92 seconds | 193,714,673 unique visits