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Patterns of taxonomic diversity among terrestrial isopods.

Sfenthourakis S, Taiti S - Zookeys (2015)

Bottom Line: In addition, we consider the structure of isopod taxonomic system under the fractal perspective that has been proposed as a measure of a taxon's diversification.Finally, we check whether there is any phylogenetic signal behind taxonomic diversity patterns.The results can be useful in a more detailed elaboration of Oniscidea systematics.

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Affiliation: University of Cyprus, Department of Biological Sciences, P.O. Box 20537, 1678 Nicosia, Cyprus.

ABSTRACT
The publication of the world catalog of terrestrial isopods some ten years ago by Schmalfuss has facilitated research on isopod diversity patterns at a global scale. Furthermore, even though we still lack a comprehensive and robust phylogeny of Oniscidea, we do have some useful approaches to phylogenetic relationships among major clades which can offer additional insights into isopod evolutionary dynamics. Taxonomic diversity is one of many approaches to biodiversity and, despite its sensitiveness to biases in taxonomic practice, has proved useful in exploring diversification dynamics of various taxa. In the present work, we attempt an analysis of taxonomic diversity patterns among Oniscidea based on an updated world list of species containing 3,710 species belonging to 527 genera and 37 families (data till April 2014). The analysis explores species diversity at the genus and family level, as well as the relationships between species per genera, species per families, and genera per families. In addition, we consider the structure of isopod taxonomic system under the fractal perspective that has been proposed as a measure of a taxon's diversification. Finally, we check whether there is any phylogenetic signal behind taxonomic diversity patterns. The results can be useful in a more detailed elaboration of Oniscidea systematics.

No MeSH data available.


The species richness of Oniscidea families against two phylogenetic hypotheses. A Tree from Mattern and Schlegel (2001) incorporating also hypotheses from Erhard (1998) B tree for Crinocheta from Schmidt (2008).
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Figure 5: The species richness of Oniscidea families against two phylogenetic hypotheses. A Tree from Mattern and Schlegel (2001) incorporating also hypotheses from Erhard (1998) B tree for Crinocheta from Schmidt (2008).

Mentions: Species richness values per family were mapped on the available phylogenetic trees for Oniscidea (Fig. 5A, B) to see whether there is any apparent phylogenetic signal in richness patterns. It is obvious that basal clades are poor, but inside the more derived clade Crinocheta-Synocheta the picture is not very clear (Fig. 5A). Nevertheless, inside Crinocheta (Fig. 5B) it seems that species richness is much higher in the more derived clades.


Patterns of taxonomic diversity among terrestrial isopods.

Sfenthourakis S, Taiti S - Zookeys (2015)

The species richness of Oniscidea families against two phylogenetic hypotheses. A Tree from Mattern and Schlegel (2001) incorporating also hypotheses from Erhard (1998) B tree for Crinocheta from Schmidt (2008).
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4525032&req=5

Figure 5: The species richness of Oniscidea families against two phylogenetic hypotheses. A Tree from Mattern and Schlegel (2001) incorporating also hypotheses from Erhard (1998) B tree for Crinocheta from Schmidt (2008).
Mentions: Species richness values per family were mapped on the available phylogenetic trees for Oniscidea (Fig. 5A, B) to see whether there is any apparent phylogenetic signal in richness patterns. It is obvious that basal clades are poor, but inside the more derived clade Crinocheta-Synocheta the picture is not very clear (Fig. 5A). Nevertheless, inside Crinocheta (Fig. 5B) it seems that species richness is much higher in the more derived clades.

Bottom Line: In addition, we consider the structure of isopod taxonomic system under the fractal perspective that has been proposed as a measure of a taxon's diversification.Finally, we check whether there is any phylogenetic signal behind taxonomic diversity patterns.The results can be useful in a more detailed elaboration of Oniscidea systematics.

View Article: PubMed Central - HTML - PubMed

Affiliation: University of Cyprus, Department of Biological Sciences, P.O. Box 20537, 1678 Nicosia, Cyprus.

ABSTRACT
The publication of the world catalog of terrestrial isopods some ten years ago by Schmalfuss has facilitated research on isopod diversity patterns at a global scale. Furthermore, even though we still lack a comprehensive and robust phylogeny of Oniscidea, we do have some useful approaches to phylogenetic relationships among major clades which can offer additional insights into isopod evolutionary dynamics. Taxonomic diversity is one of many approaches to biodiversity and, despite its sensitiveness to biases in taxonomic practice, has proved useful in exploring diversification dynamics of various taxa. In the present work, we attempt an analysis of taxonomic diversity patterns among Oniscidea based on an updated world list of species containing 3,710 species belonging to 527 genera and 37 families (data till April 2014). The analysis explores species diversity at the genus and family level, as well as the relationships between species per genera, species per families, and genera per families. In addition, we consider the structure of isopod taxonomic system under the fractal perspective that has been proposed as a measure of a taxon's diversification. Finally, we check whether there is any phylogenetic signal behind taxonomic diversity patterns. The results can be useful in a more detailed elaboration of Oniscidea systematics.

No MeSH data available.