Strong nonlinear selection against fluctuating asymmetry in wild populations of a marine fish

Evolution ◽  
2016 ◽  
Vol 70 (12) ◽  
pp. 2899-2908 ◽  
Author(s):  
Ashley M. S. Tocts ◽  
Darren W. Johnson ◽  
Ashley J. R. Carter
Keyword(s):  
Marine Fish ◽  
Fluctuating Asymmetry ◽  
Wild Populations ◽  
Nonlinear Selection

scholarly journals Otolith fluctuating asymmetry: a misconception of its biological relevance?

2015 ◽  
Vol 72 (7) ◽  
pp. 2079-2089 ◽  
Author(s):  
Carlos Díaz-Gil ◽  
Miquel Palmer ◽  
Ignacio A. Catalán ◽  
Josep Alós ◽  
Lee A. Fuiman ◽  
...  
Keyword(s):  
Fluctuating Asymmetry ◽  
Bilateral Symmetry ◽  
Field Studies ◽  
Experimental Designs ◽  
Wild Populations ◽  
Negative Results ◽  
Individual Fitness ◽  
Wide Range ◽  
Hard Structures ◽  
Shed Light

Abstract For decades, disruption of the bilateral symmetry of body structures has been related to underperformance and, hence, to fitness. In fish, this concept coupled with the claimed evidence for increased fluctuating asymmetry (FA) of pairs of hard structures, such as otoliths under conditions of stress, has led to the use of otolith FA (OFA) as a proxy for individual fitness and population success. Interpreting those significant differences in OFA in relation to stress-inducing environments and using them to identify suboptimal conditions for survival is especially appealing in the context of, for example, assessing climate change using historical otolith collections. Despite several works that give evidence to support the usefulness of OFA approach, we report on a number of unpublished and published datasets from a wide range of both, wild populations and experimental designs that show no correlation between OFA and any of the usual indicators of fitness or between OFA and expected stress gradients. Our results suggest that there may be a strong bias in the published literature towards positive relationships, despite the enormous importance of negative results for understanding the significance of OFA. These results might shed light on the interpretability of OFA in both laboratory and field studies.

Seasonal changes in silicon accumulation of wild populations of horsetail (Equisetum arvense L.)

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
P Labun ◽  
D Grulova ◽  
I Salamon
Keyword(s):  
Seasonal Changes ◽  
Equisetum Arvense ◽  
Wild Populations ◽  
Silicon Accumulation

Comparative phytochemical study on the phenolic compounds content of Artemisia annua L. from wild populations in Republic of Moldova

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
CP Stefanache ◽  
OC Bujor ◽  
R Necula ◽  
V Ghendov ◽  
A Trifan ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Artemisia Annua ◽  
Wild Populations ◽  
Phytochemical Study ◽  
Republic Of Moldova ◽  
Artemisia Annua L

Batrachochytrium dendrobatidis is present in Poland and associated with reduced fitness in wild populations of Pelophylax lessonae

2017 ◽  
Vol 124 (3) ◽  
pp. 241-245
Author(s):  
K Kolenda ◽  
A Najbar ◽  
M Ogielska ◽  
V Baláž
Keyword(s):  
Batrachochytrium Dendrobatidis ◽  
Wild Populations

DETECTION OF XENOBIOTIC SUBSTANCES IN MUTE SWANS’ (CYGNUS OLOR) BLOOD

2015 ◽  
Author(s):  
Jolanta STANKEVIČIŪTĖ ◽  
Solveiga Marija BARKAUSKAITĖ ◽  
Gediminas BRAZAITIS
Keyword(s):  
Animal Species ◽  
Wild Animal ◽  
Wild Populations ◽  
New Methods ◽  
Negative Results ◽  
Cygnus Olor ◽  
Ecological Scale ◽  
Literature Reviews ◽  
Baseline Information ◽  
Mute Swans

During recent years the attention towards the effects of xenobiotic substances on wild nature has been steadily increasing. Literature reviews have revealed that active hormone-disintegrating substances might affect the reproduction of some wild animal species. Research shows anomalies of reproduction and development in various animal groups such as birds, fish, invertebrates and reptiles. Species inhabiting water and its surroundings cause the highest concern. Due to insufficient baseline information it is difficult to determine the extent of the problem in these wild populations on an ecological scale. The research described in this article is the first attempt to analyse xenobiotic substances and evaluate possible accumulation of pharmaceuticals in animals higher up in the food chain in Lithuania. This research tests new methods for to analyse for xenobiotics substances, which might be used in the future. Blood samples of 7 swans were examined using liquid chromatography, however, no xenobiotics were detected. Negative results do not eliminate the necessity for further investigate of larger samples, other species or to search for non-pharmaceutical xenobiotics.

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