[APMW] FW: [OB] Sarus Crane population genetics study indicatenodistinctsubspecies.

[Taej Mundkur <taejmundkur.wi@vsnl.net>]

FYI and apologies for any cross-postings, With best wishes, Taej

Dr. Taej Mundkur
Wetlands International - South Asia

 

-----Original Message-----
From: gopi sundar [mailto:thavalei@hotmail.com] 
Sent: 22 February 2005 19:14
To: delhibird@yahoogroups.com; orientalbirding@yahoogroups.com;
naturalhistory-india@princeton.edu; bngbirds@yahoogroups.com
Subject: [OB] Sarus Crane population genetics study indicate
nodistinctsubspecies.


A new study of population genetics of Sarus Cranes just published in the

journal Animal Conservation by Ken Jones of the University of Illinois
and 
his associates from the International Crane Foundation reveal that there
are 
no subspecies in this species. This study utilised 13 DNA microsatellite

loci and investigated population structure of various individuals of
this 
species with representatives from all three "subspecies". While
significant 
divergence was observed among populations when individuals were assigned
to 
geographical populations, analyses based solely on individual genotypes 
demonstrated a clinal nature to the variation with the Indian Sarus
Cranes 
and the Eastern Sarus Cranes forming two ends of the cline. This
evidence 
suggests that there are no distinct subspecies within the species. This
may 
be because the populations have not been seperated long enough. This 
research supports recent thories that the Australian population was
derived 
from mainland Asia. The Australian population most certainly will not
have a 
chance to maintain gene flow with the other two populations in the Asian

continent. The Sarus Cranes in Myanmar may represent an introgression
zone 
between the Indian and the Eastern populations.

Previous segregation of cranes in different areas as subspecies was
based on 
morphological and plumage characteristics.

Complete citation of the publication:

Jones, K., Barzen, J and Ashley, M.V. 2005. Geographical partitioning of

microsatellite variation in the sarus crane. Animal Conservation 8: 1-8.

Gopi Sundar.

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