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Genetic and biometric variation across the fragmented range of Jerdon's Babbler, Chrysomma altirostre, a threatened Oriental grassland specialist

Journal article
Authors K. R. Sadanandan
Urban Olsson
R. Tizard
A. A. Khan
T. Z. Naing
N. Lin
N. Pwint
F. E. Rheindt
Published in Journal of Ornithology
Volume 159
Issue 2
Pages 575-579
ISSN 0021-8375
Publication year 2018
Published at Department of Biological and Environmental Sciences
Pages 575-579
Language en
Links doi.org/10.1007/s10336-018-1530-7
Keywords Grassland specialist, Ecomorphological adaptations, Gloger's rule, Jerdon's Babbler, birds
Subject categories Zoology

Abstract

Jerdon's Babbler Chrysomma altirostre is a threatened Oriental grassland specialist passerine heavily affected by habitat loss. Its now-relictual range spans from Pakistan to Myanmar covering three poorly-studied subspecies. Our study of subspecific differentiation revealed limited range-wide mitochondrial divergences, suggesting that mountain ranges and other geographic barriers may not have been insurmountable obstacles to inter-subspecific Pleistocene connectivity of this highly specialized grassland bird. For the westernmost subspecies scindicum, we report on phenotypic differentiation consistent with Gloger's Rule, and ecomorphological adaptations to arid environments requiring increased mobility.

Page Manager: Webmaster|Last update: 9/11/2012
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