How complex is the Bufo bufo species group?

被引:43
|
作者
Arntzen, Jan W. [1 ]
Recuero, Ernesto [2 ]
Canestrelli, Daniele [3 ]
Martinez-Solano, Inigo [4 ]
机构
[1] Nat Biodivers Ctr, NL-2300 RA Leiden, Netherlands
[2] CSIC, Museo Nacl Ciencias Nat, E-28006 Madrid, Spain
[3] Univ Tuscia, Dept Ecol & Biol, I-01100 Viterbo, Italy
[4] CSIC UCLM JCCM, Inst Invest Recursos Cineget IREC, Ciudad Real 13071, Spain
关键词
Molecular systematics; Bufo bufo; Bufo spinosus; Bufo verrucosissimus; Phylogeny; Allozymes; COMMON TOADS; PHYLOGEOGRAPHY; BIOGEOGRAPHY; DIVERGENCE; ANURA;
D O I
10.1016/j.ympev.2013.07.012
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Species delineation remains one of the most challenging tasks in the study of biodiversity, mostly owing to the application of different species concepts, which results in contrasting taxonomic arrangements. This has important practical consequences, since species are basic units in fields like ecology and conservation biology. We here review molecular genetic evidence relevant to the systematics of toads in the Bufo bufo species group (Anura, Bufonidae). Two studies recently published in this journal (Recuero et al., MPE 62: 71-86 and Garcia-Porta et al., MPE 63: 113-130) addressed this issue but reached opposing conclusions on the taxonomy of the group (four versus two species). In particular, allozyme data in the latter paper were interpreted as evidence for hybridization across species (between B. bufo-B. spinosus and B. bufo-B. verrucosissimus). We tested claims for hybridization through re-analysis of allozyme data for individuals instead of populations, to be able to distinguish between sympatry with and without admixture, and found no evidence of hybridization across taxa. We propose alternative explanations for the observed patterns that Garcia-Porta et al. (2012) failed to consider. In the absence of unequivocal evidence for hybridization and introgression, we reject the proposal to downgrade Bufo spinosus and Bufo verrucosissimus to the subspecies level. (C) 2013 The Authors. Published by Elsevier Inc. All rights reserved.
引用
收藏
页码:1203 / 1208
页数:6
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