Patterns of morphological variation among populations of the widespread annual killifish Nothobranchius orthonotus are independent of genetic divergence and biogeography

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F16%3A00458779" target="_blank" >RIV/68081766:_____/16:00458779 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1111/jzs.12134" target="_blank" >http://dx.doi.org/10.1111/jzs.12134</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jzs.12134" target="_blank" >10.1111/jzs.12134</a>

Result language

angličtina

Original language name

Patterns of morphological variation among populations of the widespread annual killifish Nothobranchius orthonotus are independent of genetic divergence and biogeography

Original language description

Populations of annual killifish of the genus Nothobranchius occur in patchily distributed temporary pools in the East African savannah. Their fragmented distribution and low dispersal ability result in highly structured genetic clustering of their populations. In this study, we examined body shape variation in a widely distributed species, Nothobranchius orthonotus with known phylogeographic structure. We tested whether genetic divergence of major mitochondrial lineages forming two candidate species is congruent with phenotypic diversification, using linear and geometric morphometry analyses of body shape in 23 wild populations. We also conducted a common-garden experiment with two wild-derived populations to control for the effect of local environmental conditions on body shape. We identified different allometric trajectories for different mitochondrial lineages and candidate species in both sexes. However, in a principal components analysis of population-level body shape, the separation among mitochondrial lineages was incomplete. Higher similarity of mitochondrial lineages belonging to different candidate species than that of same candidate species prevented distinction of the two candidate species on the basis of body shape. Analysis at the individual level demonstrated that N. orthonotus express high intrapopulation variability, with major overlap among individuals from all populations. In conclusion, we suggest that N. orthonotus be considered as a single species with an extensive geographic range, strong population genetic structure and high morphological variability.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EG - Zoology

OECD FORD branch

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Project

<a href="/en/project/GBP505%2F12%2FG112" target="_blank" >GBP505/12/G112: ECIP - European Centre of Ichtyoparasitology</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Zoological Systematics and Evolutionary Research

ISSN

0947-5745

e-ISSN

—

Volume of the periodical

54

Issue of the periodical within the volume

4

Country of publishing house

DE - GERMANY

Number of pages

10

Pages from-to

289-298

UT code for WoS article

000386032500005

EID of the result in the Scopus database

2-s2.0-84963893759