<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
I've followed this thread for a little while and have avoided commenting on it. In large part, because it started when I was in Nairobi, and had low band-width. Now my travels have now taken me to Hobart, with its higher bandwidth! Alas, no collecting/watching
in either location, work-related (teaching and on an advisory committee).</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
>From a genetics standpoint, the issue can be clearly framed in terms of gene exchange. In a classic paper, Sewall Wright (one of the founders of population genetics) noted that a single exchange of an individual between populations per generation is about
all that is needed to keep two neutral subpopulations from diverging (more formally, 4Nm >> 1, where m is the exchange rate and N the population size). So the issue becomes: "is there something about the migrationing population that results in a drastic
reduction in gene exchange with the non-migration population". Unless there is differential mate choice when they come into contact (which they will do each year), don't think the case can be made.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
cheers</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof">
bruce</div>
<div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div id="Signature">
<div>
<div></div>
<div id="divtagdefaultwrapper" dir="ltr" style="font-size:12pt; color:#000000; font-family:Calibri,Helvetica,sans-serif">
<div class="BodyFragment"><font size="2"><span style="font-size:10pt">
<div class="PlainText"> <br>
Bruce Walsh<br>
Professor, Ecology and Evolutionary Biology<br>
Professor, Public Health<br>
Professor, BIO5 Institute<br>
Professor, Plant Sciences<br>
Adjunct Professor, Animal and Comparative Biomedical Sciences<br>
Adjunct Professor, Molecular and Cellular Biology<br>
Member, Graduate Committees on Applied Math, Insect Sciences, Genetics, Statistics<br>
University of Arizona</div>
<div class="PlainText"><br>
</div>
<div class="PlainText">Evolution and Selection of Quantitative Traits (Oxford 2018)</div>
<div class="PlainText"><a href="https://global.oup.com/academic/product/evolution-and-selection-of-quantitative-traits-9780198830870" class="OWAAutoLink">https://global.oup.com/academic/product/evolution-and-selection-of-quantitative-traits-9780198830870</a> <br>
</div>
<div class="PlainText"><a href="https://www.amazon.com/gp/product/0198830874" class="OWAAutoLink">https://www.amazon.com/gp/product/0198830874</a><br>
</div>
<div class="PlainText"><br>
</div>
<div class="PlainText">Genetics and Analysis of Quantitative Traits (Sinauer <Oxford> 1998)<br>
</div>
<div class="PlainText"><a href="https://global.oup.com/academic/product/genetics-and-analysis-of-quantitative-traits-9780878934812" class="OWAAutoLink">https://global.oup.com/academic/product/genetics-and-analysis-of-quantitative-traits-9780878934812</a></div>
<div class="PlainText"><a href="https://www.amazon.com/Genetics-Analysis-Quantitative-Traits-Michael/dp/0878934812" class="OWAAutoLink">https://www.amazon.com/Genetics-Analysis-Quantitative-Traits-Michael/dp/0878934812</a><br>
</div>
<div class="PlainText"><br>
</div>
<div class="PlainText">
<div class="PlainText" style="font-family:Calibri,Helvetica,sans-serif,Helvetica,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols">
Google Scholar</div>
<div class="PlainText" style="font-family:Calibri,Helvetica,sans-serif,Helvetica,EmojiFont,"Apple Color Emoji","Segoe UI Emoji",NotoColorEmoji,"Segoe UI Symbol","Android Emoji",EmojiSymbols">
<a href="https://scholar.google.com/citations?user=7iQEFwIAAAAJ&hl=en&oi=ao" class="OWAAutoLink" id="LPlnk699724">https://scholar.google.com/citations?user=7iQEFwIAAAAJ&hl=en&oi=ao</a></div>
</div>
<div class="PlainText"><br>
</div>
</span></font></div>
</div>
</div>
</div>
</div>
<div id="appendonsend"></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div class="BodyFragment"><font size="2"><span style="font-size:11pt">
<div class="PlainText elementToProof"><br>
</div>
</span></font></div>
</body>
</html>