Altitudinal life-cycle and body-size variation in ground beetles of the genus Carabus (subgenus Ohomopterus) in relation to the temperature conditions and prey earthworms

Pedobiologia ◽  
2012 ◽  
Vol 55 (2) ◽  
pp. 67-73 ◽  
Author(s):  
Hiroshi Ikeda ◽  
Yuzo Tsuchiya ◽  
Nobuaki Nagata ◽  
Masamichi T. Ito ◽  
Teiji Sota
Keyword(s):  
Life Cycle ◽  
Body Size ◽  
Size Variation ◽  
Ground Beetles ◽  
Body Size Variation ◽  
Temperature Conditions

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 Geographic body size variation in the periodical cicadas Magicicada : implications for life cycle divergence and local adaptation

2015 ◽  
Vol 28 (6) ◽  
pp. 1270-1277 ◽  
Author(s):  
T. Koyama ◽  
H. Ito ◽  
S. Kakishima ◽  
J. Yoshimura ◽  
J. R. Cooley ◽  
...  
Keyword(s):  
Life Cycle ◽  
Body Size ◽  
Local Adaptation ◽  
Size Variation ◽  
Body Size Variation ◽  
Periodical Cicadas

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

Geographic variation in body size and sexual size dimorphism of North American Ratsnakes (Pantherophis spp. s.l.)

2018 ◽  
Vol 96 (11) ◽  
pp. 1196-1202 ◽  
Author(s):  
Brett A. DeGregorio ◽  
Gabriel Blouin-Demers ◽  
Gerardo L.F. Carfagno ◽  
J. Whitfield Gibbons ◽  
Stephen J. Mullin ◽  
...  
Keyword(s):  
Body Size ◽  
Large Scale ◽  
Sexual Size Dimorphism ◽  
Size Variation ◽  
Sexually Dimorphic ◽  
Male Body ◽  
Complex Species ◽  
Size Dimorphism ◽  
Body Size Variation ◽  
Female Body Size

Because body size affects nearly all facets of an organism’s life history, ecologists have long been interested in large-scale patterns of body-size variation, as well as why those large-scale patterns often differ between sexes. We explored body-size variation across the range of the sexually dimorphic Ratsnake complex (species of the genus Pantherophis Fitzinger, 1843 s.l.; formerly Elaphe obsoleta (Say in James, 1823)) in North America. We specifically explored whether variation in body size followed latitudinal patterns or varied with climatic variables. We found that body size did not conform to a climatic or latitudinal gradient, but instead, some of the populations with the largest snakes occurred near the core of the geographic range and some with the smallest occurred near the northern, western, and southern peripheries of the range. Males averaged 14% larger than females, although the degree of sexual size dimorphism varied between populations (range: 2%–25%). There was a weak trend for male body size to change in relation to temperature, whereas female body size did not. Our results indicate that relationships between climate and an ectotherm’s body size are more complicated than linear latitudinal clines and likely differ for males and females.

scholarly journals Temperature‐driven color lightness and body size variation scale to local assemblages of European Odonata but are modified by propensity for dispersal

2020 ◽  
Vol 10 (16) ◽  
pp. 8936-8948
Author(s):  
Daniel Acquah‐Lamptey ◽  
Martin Brändle ◽  
Roland Brandl ◽  
Stefan Pinkert
Keyword(s):  
Body Size ◽  
Size Variation ◽  
Body Size Variation
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