کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9142970 | 1164371 | 2005 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Confrontation of morphological and molecular data: The Praomys group (Rodentia, Murinae) as a case of adaptive convergences and morphological stasis
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Confrontation of morphological and molecular data: The Praomys group (Rodentia, Murinae) as a case of adaptive convergences and morphological stasis Confrontation of morphological and molecular data: The Praomys group (Rodentia, Murinae) as a case of adaptive convergences and morphological stasis](/preview/png/9142970.png)
چکیده انگلیسی
Phylogenetic relationships in a group of 21 African rodent species designated as the Praomys group (Murinae) were investigated using morphological characters and sequence data from the complete mitochondrial cytochrome b gene and nuclear IRBP gene fragment (840Â bp). The molecular results confirm the monophyly of the Praomys group, including the species Malacomys verschureni, while the other Malacomys species appear very divergent. The basal relationships within the Praomys group are poorly resolved, suggesting a rapid radiation at about 7-9 million years ago based on genetic divergence rates calibrated from the fossil record. Discrepancies between molecular and morphological results probably reflect of numerous convergences as well as variations in the rates of morphological evolution among lineages. Reconstructions of the ancestral character states suggest a savannah origin for the Praomys group, along with some morphological traits conserved by stasis in savannah taxa. At the same time, forest taxa seem to be characterized by an accelerated morphological evolution, with acquisition of convergent adaptive characters.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Molecular Phylogenetics and Evolution - Volume 37, Issue 3, December 2005, Pages 899-919
Journal: Molecular Phylogenetics and Evolution - Volume 37, Issue 3, December 2005, Pages 899-919
نویسندگان
E. Lecompte, C. Denys, L. Granjon,