• Corpus ID: 30381336

Concepts of species and modes of speciation

  title={Concepts of species and modes of speciation},
  author={B. N. Singh},
Species is a Latin word meaning ‘kind’. In biology, species is a basic unit of biological classification and a taxonomic rank. Traditionally, species has been considered as a basic category of biological classification and defined as a group of similar organisms showing the same essence which is based on typological species concept (essentialism). Later on, in the eighteenth century, the typological species definition was found inappropriate for biological species so mainly in the second half… 
The genus Drosophila is characterized by a large number of sibling species showing evolutionary significance
Sibling species are widespread among the dipteran insects and as such are well studied because some species are important medically, genetically (Drosophila) and cytologically (Sciara and Chironomus).
Allopatric and Sympatric Modes of Speciation: Examples from Drosophila
Both allopatric and sympatric modes of speciation are briefly described with the help of suitable examples from Drosophila.
In the last century, a few new concepts of evolutionary biology were proposed by evolutionary biologists which are punctuated equilibrium, concerted evolution and coevolution which are of considerable evolutionary significance and are briefly described in this article.
Reproductive Isolating Mechanisms and Speciation
  • B. Singh
  • Biology
  • 2022
Different types of isolating mechanism are defined and a few examples from Drosophila are given which show that origin and development of reproductive isolating mechanisms are considered prerequisite for the process of speciation.
Niche similarities among white‐eared opossums (Mammalia, Didelphidae): Is ecological niche modelling relevant to setting species limits?
It is suggested that ENM should be used to explore speciation mechanisms, rather than being applied to questions of setting species limits in a complex of white‐eared opossums, because differences in combinations of niche and range were clear.
Speciation under changing environments
A polyvalent sexual reproduction scheme and an automated phylogenetic tool capable of producing hierarchical species trees with relatively low memory footprint are devised and asserted that these apparatus perform well under reasonable stress by embedding them into 2D simulations of unsupervised plant evolution in textbook cases of geographical speciation.
A Review of Fish Taxonomy Conventions and Species Identification Techniques
This review paper attempts to clarify and discuss the latest schools of thought pertaining to fish taxonomy and the techniques for species identification.
New Bythinella species from northern Romania (Gastropoda: Rissooidea)
Recent samples of freshwater molluscs from Romania contained six new Bythinella species, and differences between these species were studied, to identify diagnostic features.
Intraspecific morphological variation of the scorpionfly Dicerapanorpa magna (Chou) (Mecoptera: Panorpidae) based on geometric morphometric analysis of wings
Wing shape variation was investigated between the sexes and among four populations of the scorpionfly Dicerapanorpa magna through the landmark-based geometric morphometric approach and shows that sexual dimorphism exists both in wing size and shape in D. magna.


How to be a chaste species pluralist-realist: the origins of species modes and the synapomorphic species concept
It is argued that it is useful to treat the various ways of being a species (species modes) as traits of clades, and to understand that the plurality of species concepts reflects the biological realities of monophyletic groups.
Ernst Mayr and the modern concept of species
  • K. de Queiroz
  • Biology
    Proceedings of the National Academy of Sciences of the United States of America
  • 2005
Reconciliation of incompatible species definitions and the development of a unified species concept require rejecting the interpretation of various contingent properties of metapopulation lineages, including intrinsic reproductive isolation in Mayr's definition, as necessary properties of species.
Consilience and a hierarchy of species concepts: advances toward closure on the species puzzle.
  • R. Mayden
  • Environmental Science
    Journal of nematology
  • 1999
The proposed hierarchical system of primary and secondary concepts promises both the most productive framework for mutual respect for varied concepts and the most efficient and effective means for revealing species diversity.
A species definition for the modern synthesis.
  • J. Mallet
  • Environmental Science
    Trends in ecology & evolution
  • 1995
Charles Darwin's biological species concept and theory of geographic speciation: the transmutation notebooks
Summary The common view has been that Darwin regarded species as artificial and arbitrary constructions of taxonomists, not as distinct natural units. However, in his transmutation notebooks he
Modes of Animal Speciation
Speciation is ultimately an adaptive process that involves establishment of intrin­ sic barriers to gene flow between closely related populations by development of reproductive isolating mechanisms.
19 A hierarchy of species concepts : the denouement in the saga of the species problem
  • R.
  • Environmental Science
  • 2009
At least 22 concepts of species are in use today and many of these are notably incompatible in their accounts of biological diversity. Much of the traditional turmoil embodied in the species problem
Why was Darwin’s view of species rejected by twentieth century biologists?
In the 150th anniversary of The Origin of Species, Darwinian views on species appear to be returning to more Darwinianviews on species, and to a fuller appreciation of what Darwin meant.
The Taxonomic Aspect of the Species Question
It troubled him very little whether the plants cited were species or varieties as long as they were differecd in remarkable perceptible qualities, and Achanson approves this view, remarking that it seenis to him sufficient and reasonable.