[Odonata-l] Dragonfly life span
Wed, 18 Jun 2003 11:33:30 -0700
Ola Fincke wrote:
>I think the record for adult Odonata goes to Megaloprepus caerulatus -
>>From raised larvae, marked at emergence, we have records of about 8
>>months for one individual.
>But 'old' individuals can be 5 months, so average life span is
>likely only 4 or so.
Many tropical species spend the dry season as adults, and in regions
in which the rainy season lasts only 5-6 months, they presumably live
at least 6-7 months. Ola's Megaloprepus, as far as I know, are the
only such odonates that have actually been marked and resighted to
support this hypothesis. We need biologists willing to spend a year
at a tropical field station and have fun marking all the dragonflies
>But if you're talking larvae, many Canadian dragonflies have the
>record I think, of several years.
Corbet (1999) lists 5 years as the longest known larval development
(Cordulia aenea in Japan), with suppositions up to 8 or even 10 years
in some high-latitude, high-altitude cold-water species.
Dennis Paulson, Director phone 253-879-3798
Slater Museum of Natural History fax 253-879-3352
University of Puget Sound e-mail email@example.com
1500 N. Warner, #1088
Tacoma, WA 98416-1088