Ardea, Volume (105), No (1), Year (2017-5) , Pages (27-36)

Title : ( An expanding hybrid zone between Black-headed and Red-headed Buntings in northern Iran )

Authors: Ali gholamhosseini , Mansour Aliabadian , Jamshid Darvish , Till Topfer , Glenn-Peter Sætre ,

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Black-headed Bunting Emberiza melanocephala and Red-headed Bunting Emberiza bruniceps are closely related passerine species that were reported to meet in a hybrid zone southeast of the Caspian Sea, Iran, over 70 years ago. In this study, we revisited the hybrid zone in the northern parts of Iran to compare its present extension and position with previous reports and to determine the relative importance of intrinsic and extrinsic factors in defining range limits of these bunting species in the contact zone. Species Distribution Models (SDMs) were constructed to characterize the factors affecting the current location of the zone. Our results show that the hybrid zone has expanded westwards approximately 170 km in recent decades and that the Black-headed Bunting is being replaced by the Red-headed Bunting in a westward movement. The Blackheaded Bunting has retreated a little from its eastern range in north Iran in recent decades. The hybrid zone has expanded westward rather than shifted. Model outputs show that climatically suitable habitats for both species extend far beyond the hybrid zone. This mismatch between the potential and realized distribution for the two species suggests that intrinsic factors play a major role in shaping range limits of these hybridizing bunting species

Keywords

, expanding hybrid zone, ecological niche, niche modelling, contact zone,
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@article{paperid:1064045,
author = {Gholamhosseini, Ali and Aliabadian, Mansour and Darvish, Jamshid and Till Topfer and Glenn-Peter Sætre},
title = {An expanding hybrid zone between Black-headed and Red-headed Buntings in northern Iran},
journal = {Ardea},
year = {2017},
volume = {105},
number = {1},
month = {May},
issn = {0373-2266},
pages = {27--36},
numpages = {9},
keywords = {expanding hybrid zone; ecological niche; niche modelling; contact zone; Emberizidae},
}

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%0 Journal Article
%T An expanding hybrid zone between Black-headed and Red-headed Buntings in northern Iran
%A Gholamhosseini, Ali
%A Aliabadian, Mansour
%A Darvish, Jamshid
%A Till Topfer
%A Glenn-Peter Sætre
%J Ardea
%@ 0373-2266
%D 2017

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