Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Modeling Sexual Differences of Body Size Variation in Ground Beetles in Geographical Gradient (The Case Study in Pterostichus oblongopunctatus Fabricius, 1787)

Raisa Sukhodolskaya
* ORCID logo ,
Anatoliy Saveliev
ORCID logo ,
Nadezhda Ukhova
,
Iraida Vorobyova
,
Igor Solodovnikov
,
Anatoliy Anciferov
,
Tatyana Gordienko
,
Rifgat Shagidullin
,
Dmitriy Vavilov
Version 1 : Received: 19 October 2020 / Approved: 20 October 2020 / Online: 20 October 2020 (10:51:54 CEST)

How to cite: Sukhodolskaya, R.; Saveliev, A.; Ukhova, N.; Vorobyova, I.; Solodovnikov, I.; Anciferov, A.; Gordienko, T.; Shagidullin, R.; Vavilov, D. Modeling Sexual Differences of Body Size Variation in Ground Beetles in Geographical Gradient (The Case Study in Pterostichus oblongopunctatus Fabricius, 1787). Preprints 2020, 2020100408. https://doi.org/10.20944/preprints202010.0408.v1 Sukhodolskaya, R.; Saveliev, A.; Ukhova, N.; Vorobyova, I.; Solodovnikov, I.; Anciferov, A.; Gordienko, T.; Shagidullin, R.; Vavilov, D. Modeling Sexual Differences of Body Size Variation in Ground Beetles in Geographical Gradient (The Case Study in Pterostichus oblongopunctatus Fabricius, 1787). Preprints 2020, 2020100408. https://doi.org/10.20944/preprints202010.0408.v1

Abstract

Concretizing the mechanisms of Bergmann rule, we found saw-tooth pattern in body size variation in ground beetle Pterostichus oblongopunctatus. We sampled beetles in 2010 – 2018 at the forest undisturbed plots on the broad territory in Russia. Investigating regions covered territory, extending to 3 degrees latitude and 19 degrees longitude. We measured six traits in every of 3294 caught individual. ANOVA showed that latitude, and sex affected significantly body size of the species studied. Mean values of each trait changed significantly from one studied region to another in females and males as well. Sexual size dimorphism in species was female-biased. We performed models in R to estimate the steepness of body size variation in both sexes. In overwhelming majority of cases that parameter was equal in both sexes. So the hypothesis, that male′s variation is steeper in latitude gradient was not confirmed.

Keywords

body size variation; ground beetles; latitude gradient; sexual size dimorphism; steepness of variation.

Subject

Biology and Life Sciences, Anatomy and Physiology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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