Ground Beetle (Coleoptera: Carabidae) Diversity and Body-Size Variation in Four Land Use Types in a Mountainous Area Near Beijing, China

2017 ◽  
Vol 71 (2) ◽  
pp. 402 ◽  
Author(s):  
Xin Zhang ◽  
Guishen Zhao ◽  
Xuzhu Zhang ◽  
Xiao Li ◽  
Zhenrong Yu ◽  
...  
Keyword(s):  
Land Use ◽  
Body Size ◽  
Ground Beetle ◽  
Size Variation ◽  
Mountainous Area ◽  
Body Size Variation ◽  
Land Use Types ◽  
Beijing China

scholarly journals Modeling Sexual Differences of Body Size Variation in Ground Beetles in Geographical Gradients: A Case Study of Pterostichus melanarius (Illiger, 1798) (Coleoptera, Carabidae)

Life ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 112
Author(s):  
Sergey Luzyanin ◽  
Anatoly Saveliev ◽  
Nadezhda Ukhova ◽  
Iraida Vorobyova ◽  
Igor Solodovnikov ◽  
...  
Keyword(s):  
Body Size ◽  
Ground Beetle ◽  
Size Variation ◽  
Trait Variation ◽  
Data Set ◽  
Body Size Variation ◽  
Regression Curves ◽  
Length Increase ◽  
Pterostichus Melanarius

The aim of this study was to test the steepness of body size variation in males and females in the widespread ground beetle Pterostichus melanarius in geographical gradients. Beetles were sampled in 15 regions of Europe and Asia, and sampling territories differed 17° in latitude and 121° in longitude. We measured six linear traits in every captured beetle and formed a data set that included 2154 individuals. Body size variation in all traits in general was sawtooth, both in latitude and in longitude gradients. Regression analysis showed slight trends: in the latitude gradient, elytra parameters increased, pronotum length did not change but the width increased, and head parameters decreased. In the longitude gradient, the changes were as follows: elytra length increased, but its width did not change; pronotum length did not change, but its width increased; the head parameters decreased. Thus, we observed the elytra length increase and the head parameters decrease northwards and eastwards. We compared female and male regression curves (trait size on latitude/longitude): p-levels were significant only in four cases out of 12. Thus, we conclude that, in general, there is no evidence for the steepness in trait variation in males compared with females.

scholarly journals Modeling sexual differences of body size variation in ground beetles in geographical gradient (The case study in Pterostichus oblongpunctatus Fabricius, 1787)

2020 ◽  
Vol 13 (3) ◽  
pp. 149-161
Author(s):  
Raisa A Sukhodolskaya ◽  
Anatoly A Saveliev ◽  
Nadezhda L Ukhova ◽  
Iraida G Vorobyova ◽  
Igor A Solodovnikov ◽  
...  
Keyword(s):  
Body Size ◽  
Sexual Size Dimorphism ◽  
Ground Beetle ◽  
Geographical Location ◽  
Size Variation ◽  
Ground Beetles ◽  
Mean Values ◽  
Size Dimorphism ◽  
Body Size Variation

Fleshing out 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 and Belarus. Investigating regions covered territory, extending to 3 degrees latitude and 31 degrees longitude. We measured six traits in every of 3294 caught individuals. ANOVA showed that geographical location 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.

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

2020 ◽  
Author(s):  
Raisa Sukhodolskaya ◽  
Anatoliy Saveliev ◽  
Nadezhda Ukhova ◽  
Iraida Vorobyova ◽  
Igor Solodovnikov ◽  
...  
Keyword(s):  
Body Size ◽  
Sexual Size Dimorphism ◽  
Ground Beetle ◽  
Size Variation ◽  
Ground Beetles ◽  
Mean Values ◽  
Size Dimorphism ◽  
Body Size Variation ◽  
Pterostichus Oblongopunctatus

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.

scholarly journals Mammalian body size is determined by interactions between climate, urbanization, and ecological traits

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Maggie M. Hantak ◽  
Bryan S. McLean ◽  
Daijiang Li ◽  
Robert P. Guralnick
Keyword(s):  
Body Size ◽  
Resource Availability ◽  
Critical Role ◽  
Size Variation ◽  
Ecological Factors ◽  
Species Traits ◽  
Body Size Variation ◽  
Resource Availability Hypothesis ◽  
Urban Heat ◽  
Thermal Buffering

AbstractAnthropogenically-driven climate warming is a hypothesized driver of animal body size reductions. Less understood are effects of other human-caused disturbances on body size, such as urbanization. We compiled 140,499 body size records of over 100 North American mammals to test how climate and human population density, a proxy for urbanization, and their interactions with species traits, impact body size. We tested three hypotheses of body size variation across urbanization gradients: urban heat island effects, habitat fragmentation, and resource availability. Our results demonstrate that both urbanization and temperature influence mammalian body size variation, most often leading to larger individuals, thus supporting the resource availability hypothesis. In addition, life history and other ecological factors play a critical role in mediating the effects of climate and urbanization on body size. Larger mammals and species that utilize thermal buffering are more sensitive to warmer temperatures, while flexibility in activity time appears to be advantageous in urbanized areas. This work highlights the value of using digitized, natural history data to track how human disturbance drives morphological variation.

scholarly journals The role of local versus biogeographical processes in influencing diversity and body‐size variation in mammal assemblages

2016 ◽  
Vol 6 (5) ◽  
pp. 1447-1456 ◽  
Author(s):  
Luiz Carlos S. Lopez ◽  
Marcos S. L. Figueiredo ◽  
Maria Paula de Aguiar Fracasso ◽  
Daniel Oliveira Mesquita ◽  
Ulisses Umbelino Anjos ◽  
...  
Keyword(s):  
Body Size ◽  
Size Variation ◽  
Body Size Variation ◽  
Mammal Assemblages

scholarly journals Insights into body size variation in cetaceans from the evolution of body-size-related genes

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Yingying Sun ◽  
Yanzhi Liu ◽  
Xiaohui Sun ◽  
Yurui Lin ◽  
Daiqing Yin ◽  
...  
Keyword(s):  
Body Size ◽  
Size Variation ◽  
Body Size Variation
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