Species delimitation based on diagnosis and monophyly, and its importance for advancing mammalian taxonomy

  title={Species delimitation based on diagnosis and monophyly, and its importance for advancing mammalian taxonomy},
  author={Eli{\'e}cer E. Guti{\'e}rrez and Guilherme Siniciato Terra Garbino},
  journal={Zoological Research},
  pages={301 - 308}
A recently proposed taxonomic classification of extant ungulates sparked a series of publications that criticize the Phylogenetic Species Concept (PSC) claiming it to be a particularly poor species concept. These opinions reiteratively stated that (1) the two fundamental elements of the "PSC", i.e., monophyly and diagnosability, do not offer objective criteria as to where the line between species should be drawn; and (2) that extirpation of populations can lead to artificial diagnosability and… Expand
10 Citations

Figures and Topics from this paper

Species delimitation in mammals: A comment on Zachos (2018)
In this reply to Zachos (2018), it is emphasized that to avoid encouraging mistrust in taxonomy that can have negative consequences for taxonomists and taxonomic infrastructures, no doubt taxonomy is crucial to effective monitoring and conservation of mammal biodiversity. Expand
Systematics of Brucepattersonius Hershkovitz, 1998 (Rodentia, Sigmodontinae): molecular species delimitation and morphological analyses suggest an overestimation in species diversity
This study presents a phylogenetic hypothesis including samples throughout the distribution of the genus Brucepattersonius and employed single-locus molecular species delimitation analyses to provide a new hypothesis for species limits within Brucepat Pattersonius, and recovers four strongly supported clades within the genus. Expand
Species Concepts: What about Ticks?
The issue of the species concept in tick taxonomy is addressed and the adoption of an integrative species concept is discussed, in light of recent advances in understanding of the genetics, morphology, and biology of ticks. Expand
Unveiling the identity of Kerr's Atlantic tree rat, Phyllomys kerri (Rodentia, Echimyidae)
An emended diagnosis of P. kerri is provided, comparing it with sympatric congeners, and comments on its evolutionary affinities, geographic distribution, and conservation status are provided. Expand
Taxonomic revision and phylogenetic position of the flying squirrel genus Biswamoyopterus (Mammalia, Rodentia, Sciuridae, Pteromyini) on the northern Indo-China peninsula
The flying squirrel genus Biswamoyopterus (Rodentia: Sciuridae: Pteromyini) was once considered to contain two species, Biswamoyopterus biswasi from northeastern India and B. laoensis from centralExpand
Taxonomic revision and phylogenetic position of the flying squirrel genus Biswamoyopterus (Mammalia, Rodentia, Sciuridae, Pteromyini) on the northern Indo-China peninsula
The phylogenetic analyses strongly support Biswamoyopterus as an independent genus of Pteromyini, as a sister group to Aeromys, and the results strongly support these two samples as representatives of the same species. Expand
Inferring the mammal tree: Species-level sets of phylogenies for questions in ecology, evolution, and conservation
Credible sets of mammalian phylogenetic history are developed, enabling investigations of long-standing questions in comparative biology, and finding that node ages are broadly concordant among studies, and recent rates of speciation are estimated more accurately in this study than in previous "supertree" approaches. Expand
Taxonomic revision of the South Asian River dolphins ( Platanista ): Indus and Ganges River dolphins are separate species
Funding information Marine Mammal Commission, Grant/Award Number: MMC12-129; Whale and Dolphin Conservation; World Wildlife Fund Abstract South Asian river dolphins (Platanista gangetica) are amongExpand


Commentary on taxonomic inflation, species delimitation and classification in Ruminantia
This commentary raises some of the discussed points that I consider particularly important and then list a number of recent examples of what I consider excessive splitting of some ruminant species. Expand
Quantitative criteria for species delimitation
This work develops quantitative methods for a classic technique in systematic zoology, namely the use of divergence between undisputed sympatric species as a yardstick for assessing the taxonomic status of allopatric forms, which can be applied to the global avifauna to deliver taxonomic decisions with a high level of objectivity, consistency and transparency. Expand
Species inflation and taxonomic artefacts—A critical comment on recent trends in mammalian classification
This work highlights several cases of splitting and argues that much of this taxonomic inflation is artificial due to shortcomings of the phylogenetic species concept and unjustified reliance on insufficient morphological and/or genetic data. Expand
Does nomenclatural availability of nomina of new species or subspecies require the deposition of vouchers in collections
It is supported here the view that practice of naming new species or subspecies without material onomatophores is not doing a service to the discipline of taxonomy as illustrations, DNA sequences or “definitions” cannot replace voucher specimens. Expand
New species and subspecies descriptions do not and should not always require a dead type specimen
Possible reasons why the collection of a dead type specimen might not be necessary or recommended include the setting of a good example to communities in whose hands conservation action lies, government permit issues and the description of new taxa on the brink of extinction where collecting may impact populations. Expand
Taxonomic revision of the genus Galictis (Carnivora: Mustelidae): species delimitation, morphological diagnosis, and refined mapping of geographical distribution
A comprehensive assessment of morphological and molecular characters is performed to test the number of species within Galictis, and to characterize their distinctiveness and evolutionary history, providing a solid taxonomic framework for this poorly known taxon. Expand
Impacts of taxonomic inertia for the conservation of African ungulate diversity: an overview
There is no evidence that purported ‘taxonomic inflation’ has adverse effects on ungulate conservation: rather, it is taxonomic inertia that has such adverse effects. Expand
Species delimitation in systematics: inferring diagnostic differences between species
  • J. Wiens, M. Servedio
  • Biology, Medicine
  • Proceedings of the Royal Society of London. Series B: Biological Sciences
  • 2000
It is argued that determining whether diagnostic characters are truly fixed with certainty is generally impossible with finite sample sizes and it is shown that sample sizes of hundreds or thousands of individuals may be necessary to have a reasonable probability of detecting polymorphisms in diagnostic characters at frequencies approaching zero. Expand
Tree thinking and species delimitation: Guidelines for taxonomy and phylogenetic terminology
This editorial briefly summarizes phylogenetic and taxonomic issues and provides guidelines to authors submitting their studies to Mammalian Biology in order to avoid errors in phylogenetic discussions and to do justice to the fundamental nature of species in biology. Expand
What is an ‘extant’ type specimen? Problems arising from naming mammalian species‐group taxa without preserved types
It is found that the Code's waiver of the requirement that a type specimen be deposited in a collection if the specimen is no longer extant presents numerous problems—in particular, that a living-at-large type specimen can still be ‘extant’ even if its whereabouts are unknown at certain times and/or it may no longer be alive. Expand