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Index of Subjects On 24 Aug 2019 11:42, Larry Bogan wrote: > Hi, > Only the abstract of the University of Chicago article about > Monarchs is free. However, Andy Davis at the University of Georgia > has > a Blog describing the reasearch. See his June 24 Blog on his website > http://monarchscience.org . I would recommend reading many of his > other blogs about Monarch Science. (There are several about Nova > Scotia there) > > There has been some reservations about the rearing of Monarchs being > of value to migrations for several years now. This article emphasizes > that commercial Monarchs are different. I think there has to be a > more > definitive experiments about the eclosing indoors effecting the > migration pattern of the Monarch. In the experiment, they placed the > pupae in an incubator. > > Alison and I rear our Monarchs on the plants where we found them and > let them wander at will, and only restricting them when they reach > 5th > instar. Our enclosure is large and near large windows with natural > light. > > This year we are bringing fewer inside and flagging chysalis in the > field and monitoring them. A large fraction of them get into trouble > from predation and attaching to things like grass and dead leaves > that > fall off plants. In those cases we rescue and allow them to eclose > inside by attaching them to study supports. At the moment we have > nearly 50 chrysalis flagged in the field and have released over 50 > reared inside. We have at least over 50 in caterpillar stages. > > We saw a greater return of Monarch butterflies this year although > the were late due to the cool June. The Monarchs are a couple weeks > behind where they were last year and there will not be two > generations > reared this year. > > I will give a more completer report later. > Regards, > Larry > > There was a Monarch on my Brown-eyed Susans this morning..the first I've seen this year. French Cove, Rich. Co. Billy > -- > Larry Bogan > <larry@bogan.ca> > Brooklyn Corner, Nova Scotia > > ////////////////////////// > On Fri, 23 Aug 2019 20:55:37 -0300 > Lois Codling <loiscodling@hfx.eastlink.ca> wrote: > >> >> Larry and others will be interested in this study. If you look at >> the >> link, the article is near the bottom of the page. >> >> Lois Codling >> >> >> Monarch migration aggravation >> >> <https://world.wng.org/content/time_to_get_over_darwin/#monarchs> >> >> Soon the monarch butterflies of North America will begin their >> annual >> fall migration to the warmer climates of California or Mexico, where >> they will winter until their return next spring. Over the past two >> decades, the number of North American monarchs has dwindled by 90 >> percent. To boost their numbers, hobbyists raise large numbers of >> monarchs, and commercial breeders sell them for school children to >> release. But a study <https://www.pnas.org/content/116/29/14671> >> published July 16 in the /Proceedings of the National Academy of >> Sciences/, showed that captive breeding disrupts monarchs’ migratory > ......
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