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Diptera.info :: Miscellaneous :: General queries
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Sex differences in the phenology of Diptera
tristram
#1 Print Post
Posted on 30-05-2023 22:02
Member

Location: Reading, UK
Posts: 1322
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
 
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tristram
#2 Print Post
Posted on 30-05-2023 22:05
Member

Location: Reading, UK
Posts: 1322
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]
 
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tristram
#3 Print Post
Posted on 30-05-2023 22:18
Member

Location: Reading, UK
Posts: 1322
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 makes?

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.
 
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