کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2835198 1164335 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
DNA evidence shows vocalizations to be a better indicator of taxonomic limits than plumage patterns in Zimmerius tyrant-flycatchers
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
DNA evidence shows vocalizations to be a better indicator of taxonomic limits than plumage patterns in Zimmerius tyrant-flycatchers
چکیده انگلیسی

We investigated mitochondrial and nuclear DNA in the small tyrant-flycatcher genus Zimmerius (Tyrannidae) and show that molecular data are in strong disagreement with morphology-based taxonomy, but in good concordance with vocal characters. Our molecular data identified two independent cases of well-supported polyphyletic species arrangements within this genus that indicate the following taxonomic changes: elevation of Z. acer and Z. albigularis to species level, separation of northern populations of Z. chrysops as a species and inclusion of southern populations of Z. chrysops into Z. viridiflavus. Although polyphyly has rarely been encountered in bird systematics it has previously been shown for two other tyrannid genera and suggests that tyrannid taxonomy may be poorly resolved, presumably as a consequence of the conserved plumage patterns observed in many tyrannid genera. Our study suggests that vocalizations can be a better indicator of taxonomic limits than plumage pattern in tyrannids.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Molecular Phylogenetics and Evolution - Volume 48, Issue 1, July 2008, Pages 150–156
نویسندگان
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