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Author Topic: Climate change causing lifecycle disruption  (Read 777 times)
Robert
Rangiora
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« on: (06 Apr 2010) Tue 01:38 PM »

Hi,

Just a New Scientist article about the Common Brown Heteronympha merope in Victoria (Aus) emerging earlier & having to live longer as a Adult Butterfly as warmer winters are causing problems in their larvae.

The article can be found at;
http://www.newscientist.com/article/dn18671-global-warming-changes-natural-event-first-causal-link.html

Here in NZ, we have serveral species that are used to living in the cold (mainly) as larvae, the most notable being the Butler's Ringlet Erebiola butleri ( nzButterfly.info/resident/butlers-ringlet ) which lives for months as a larva to avoid predators by not being active on warm clear days (normal Butterfly wether) & presumably survives the winter as a larva.

We also know that Red Admirals Vanessa gonerilla ( nzButterfly.info/resident/red-admiral ) aren't keen on hot weather, choosing to take shelter on hot days.

Edited on 7/4/10 to change subject title.
« Last Edit: (07 Apr 2010) Wed 01:53 PM by Robert » Logged
Jane
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« Reply #1 on: (07 Nov 2011) Mon 10:48 AM »

That might explain why I saw a Red Admiral about 6 weeks ago during a cold snap here in the Manawatu.
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Robert
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« Reply #2 on: (07 Nov 2011) Mon 06:16 PM »

Bear in mind, that Red Admirals can be seen all winter, then in spring the over-wintering larvae are emerging as imagines (adults).

Coppers, Blues & Ringlets would be better idicator species in NZ.
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