[Taxacom] Taxacom Digest, Vol 111, Issue 2

[Mabel Alvarado]

Mabel Alvarado Gutierrez
Museo de Historia Natural
Departamento de Entomología
Av. Arenales 1256 Jesus María
Lima 14 - Perú
cel:    (511) 997345956
http://museohn.unmsm.edu.pe

> From: taxacom-request at mailman.nhm.ku.edu
> Subject: Taxacom Digest, Vol 111, Issue 2
> To: taxacom at mailman.nhm.ku.edu
> Date: Wed, 3 Jun 2015 12:00:02 -0500
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> Today's Topics:
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>    1. Laser-stimulated fluorescence in Paleontoloty (Kenneth Kinman)
>    2. why speculum feathers evolved (Kenneth Kinman)
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Tue, 2 Jun 2015 21:02:58 -0500
> From: Kenneth Kinman <kinman at hotmail.com>
> To: "taxacom at mailman.nhm.ku.edu" <taxacom at mailman.nhm.ku.edu>
> Subject: [Taxacom] Laser-stimulated fluorescence in Paleontoloty
> Message-ID: <SNT148-W5091AA8D023649351AA3F8C1B40 at phx.gbl>
> Content-Type: text/plain; charset="iso-8859-1"
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> Dear all,                          For those of you interested in fossils, there is a new paper out in PLOS ONE which describes laser-stimulated fluorescence in the study of fossils (showing much greater detail than ultraviolet).  Below is a weblink to the article.                  ----------------Ken Kinman           
> http://journals.plos.org/plosone/article?id.1371/journal.pone.0125923     
> 
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> ------------------------------
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> Message: 2
> Date: Tue, 2 Jun 2015 21:11:32 -0500
> From: Kenneth Kinman <kinman at hotmail.com>
> To: "taxacom at mailman.nhm.ku.edu" <taxacom at mailman.nhm.ku.edu>
> Subject: [Taxacom] why speculum feathers evolved
> Message-ID: <SNT148-W5677E0E23C4FAD45BA988EC1B40 at phx.gbl>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> Hi All,                         The consensus view seems to be that the main reason speculum feathers evolved was to help maintain flock cohesion.  However, if you click on the weblink below, there is a picture of the speculum feathers (from behind) of a duck in flight.  I noticed that the white and black feathers surrounding the blue ones give them a remarkable resemblance to the eye spots on some butterflies.  Therefore, perhaps the speculum feathers could act like huge eye spots which sometimes temporarily startles a predator bird, especially a younger, inexperienced predator that has never seen them before.  That might help explain why there are white and black feathers surrounding the blue feathers.           http://blog.kootenay-lake.ca/?pe81                                                    ---------------Ken Kinman
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> End of Taxacom Digest, Vol 111, Issue 2
> ***************************************