[Odonata-l] Emergence Triggers

[Paul Brunelle]

Hal;
	I quite agree. But I do think there may be some interesting hints to  
be taken from behavior in captivity, which could then be studied in  
the natural setting. Another interesting possibility is field  
captivity such as an enclosure or emergence trap. The latter was  
quite useful when I was studying N. michaeli.
	Paul
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Paul M. Brunelle, BDes, FGDC
4 Hilltop Terrace, Dartmouth, NS, Canada, B2Y 3T1
(about 45°N) 902-423-1845
Fellow of the Society of Graphic Designers of Canada
Research Associate, New Brunswick Museum
Regional Coordinator, Atlantic Dragonfly Inventory Program
Coordinator, Maine Damselfly and Dragonfly Survey
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>>
>>> On Apr 25, 2008, at 12:19 PM, Hal White wrote:
>>>> Paul and others,
>>>>
>>>> I really would be careful trying to make conclusions about the  
>>>> factors critical for emergence from nymphs kept inside during  
>>>> the winter in uncontrolled circumstances. Anecdotally, I too  
>>>> have had emergence much earlier than in the field. The  
>>>> temperatures were different for a long time and the photoperiods  
>>>> were quite different as well. Also water temperatures where the  
>>>> larva live are less variable and slower to respond than air  
>>>> temperature.
>>>>
>>>> Corbet is an excellent place to start for anyone wishing to  
>>>> study this issue systematically for particular species. Clearly,  
>>>> there are many interesting issues about Odonate biology that  
>>>> warrant further study.
>>>>
>>>> Hal
>>>>
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