Asymmetry in Luticola species

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F19%3A00508257" target="_blank" >RIV/67985939:_____/19:00508257 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/19:10403503

Result on the web

<a href="http://hdl.handle.net/11104/0299217" target="_blank" >http://hdl.handle.net/11104/0299217</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/0269249X.2019.1604435" target="_blank" >10.1080/0269249X.2019.1604435</a>

Result language

angličtina

Original language name

Asymmetry in Luticola species

Original language description

Morphological asymmetry in raphid pennate diatoms is detectable not only by valve outline and specific frustule features, but also in their ontogeny. All raphid pennate diatoms exhibit cryptic lateral polarity, which is associated with the asymmetric formation of the valve sides along the apical axis. Differences in the relative widths of primary and secondary valve sides have proven taxonomically important for separating dorsiventral genera within the Cymbellales. However, rigorous studies examining subtle asymmetric differencesnin valve outline are scarce. In the present geometric morphometric study of 23 Luticola species, the total asymmetry in valve outline of natural populations was decomposed into components of directional asymmetry (DA) and fluctuating asymmetry (FA) to test whether cryptic directional asymmetry has a significant effect on valve outlines across the genus as a whole. The patterns of asymmetric variation provide a view on average asymmetry of populations (evaluated by DA) and individual asymmetric deviations (associated with FA).nSubtle, but statistically significant, average irregularities between the primary and secondary sides of Luticola species (i.e., the effect of DA) were found in all but two species. Patterns of DA between valve sides were quite similar in 17 of the analysed species. This likely indicates common developmental patterns in their morphogenesis. The effect of FA, which has often been used as a proxy of developmental instability of populations, was significant in all Luticola species. Since FA scores of individual cells were not correlated with size diminution of most species, FA might reflect the effect of environmental factors but not life cycle changes. The methodological framework presented in this study could be valuable for future work focused on evolutionarily and/or environmentally related shape aberrations and valve variation in pennate diatoms.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10602 - Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology

Project

<a href="/en/project/GJ16-17346Y" target="_blank" >GJ16-17346Y: The past is the key to the future: Ecology and Holocene evolution of freshwater diatom communities in the northern Antarctic Peninsula region.</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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

Name of the periodical

Diatom Research

ISSN

0269-249X

e-ISSN

—

Volume of the periodical

34

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

67-74

UT code for WoS article

000470352800001

EID of the result in the Scopus database

2-s2.0-85065744146