Let's talk about Monarchs!
Moderator: Monarch Watch
Jeans wrote:hey i found about 20 today. how do i tell if these are the monarchs that will migrate? last year the first ones i found for tagging were born August 1st... was this too early?
donnap27 wrote:i have had the same question i my mind. i've looked up my coordinates.
Can you advise me on the date that i should start tagging?
Latitude 42.3533 -- 42degrees 21.2min N
Longitude 85.3928 -- 85degrees 23.6min W
thank you ... you are all a wonderful source of information
Jeans wrote:hey I live in Dunnville, Ontario, and my latitude is 42.90360 and my longatude is 79.61695.For the "Peak Migration dates", is that just when they begin to migrate, or when to start tagging? Do the migrating monarchs stick around for a few weeks, and then migrate? or would they sort of just hatch and go? the chrysalises I have are just starting to hatch, and one hatched yesterday.... do you think I should tag her?
Mona Miller wrote: Latitude Midpoint Peak in monarch abundance
43 degrees north 11 September 3 - 15 September
41 degrees north 16 September 8 - 20 September
Paul Cherubini wrote:Jeans wrote:hey i found about 20 today. how do i tell if these are the monarchs that will migrate? last year the first ones i found for tagging were born August 1st... was this too early?
Yes, eggs being laid now in all parts of Ontario will produce adults that are in reproductive diapause that will migrate mostly to Mexico (if the caterpillars and chrysalids are reared outdoors).
We cannot fully answer your question about whether or not Aug.1 adults will be in diapause unless you tell us what city you live in or what latitude you live at. Generally, most adults born the first week of August at a latitude of 49 degrees N or higher will be in reproductive diapause and will migrate mostly to Mexico.
David Calhoun wrote: I didn't know that the migration of an individual depended on whether the cat or chrysalid was reared indoors. Can you please elaborate? Thanks in advance. David in Charlestown,IN
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