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Post by jmg on Sept 5, 2015 16:32:20 GMT
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Post by nomad on Sept 6, 2015 7:29:59 GMT
Very interesting information on two of your special butterflies  . It must have been very disappointing not to have found those two endemic subspecies. Are there any suggestions, as to why they have perhaps disappeared. |
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Post by Adam Cotton on Sept 6, 2015 7:50:52 GMT
If the weather is not right the P. alexanor pupae will not emerge and will wait another 12 months. Perhaps that's what has happened this year, at least I hope so.
Adam.
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lv73
New Aurelian
Posts: 17 
Country: France
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Post by lv73 on Sept 11, 2015 19:47:49 GMT
Weather has been awfull during spring and summer 2014, but has been quite good in 2015. So I'm afraid those two small populations have desappeard.
Unfortunatey we can expect that global climate change will not be good for this type of taxa...
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Post by wollastoni on Sept 12, 2015 9:44:20 GMT
Laurent, you are right for Parnassius corybas but Papilio alexanor is a Mediterranean species with strong populations in Israel for example... global warming should rather expand its territory instead of threatening it?
What do you think ?
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Post by Paul K on Sept 12, 2015 14:32:12 GMT
In Rocky Mountains in Alberta Canada due to global warming the habitat of Parnassius smintheus is shrinking. The meadows on the hill tops are disappearing and are replaced by growing forest . The tree line is moving to higher elevation. The study shows that the specimens don't migrate between two separate meadows so it is getting more localized. Maybe that is same case in regards P.corybas gazeli once the weather is getting warmer the food plant and habitat disappear and the species is extinct from locality due to be unable to move to another higher mountain top which might be to far away.
Paul
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Post by nostrodamus on Sept 12, 2015 14:51:43 GMT
Weather has been awfull during spring and summer 2014
One bad season like last year isn't enough to make disappear one species !!! |
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Post by Paul K on Sept 12, 2015 15:07:11 GMT
I don't think the weather actually directly cause the extinction, unless it would get extremely hot or cold.
And you are right the change is not going to happen in one year unless the population is very small and very limited to one location and balance is jeopardized.
Paul
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Post by jmg on Oct 24, 2017 7:59:38 GMT
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Post by limenitis78 on Nov 24, 2017 22:56:42 GMT
Greetings. I would not bring more information but P corybas remains present according to some members of the ALF in the Mercantour. Regarding Destelensis opinions are shared within this association but it seems to still exist in the Var (I do not know the localities sorry) and for some if it is a different host plant and a size a little larger. That does not bring "big thing" but that's all I learned about them. He remains nevertheless in the Alps as here. (it's in French.) insectera.forumactif.com/t28078-vallee-du-sasse-la-basse-combe-04-iiGood research! Sorry I do with Google translation to understand you. Good evening to all. |
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Post by xavm (Xavier) on Jan 24, 2018 19:32:51 GMT
If I can update our colleagues:
Papilio alexanor destelensis can still be seen in the Var, north of Toulon (data from May 2016).
Parnassius "gazeli" has moved from its original location and was observed in 2016 (4-5 specimens). However, despite the biotope altitude (i.e. 2400 m asl), few Parnassius apollo were seen. There is a high risk of hybridization with can lead to gazeli end...
Cheers, Xavier
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. It must have been very disappointing not to have found those two endemic subspecies. Are there any suggestions, as to why they have perhaps disappeared. 
