Age-related variation of homing range in honeybee males (Apis mellifera)

2021 ◽  
Author(s):  
S. Hayashi ◽  
T. Sasaki ◽  
S. Ibrahim Farkhary ◽  
K. Kaneko ◽  
Y. Hosaka ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Related Variation ◽  
Age Related

Age-Related Variation in Copulations of Male Northern Muriquis (Brachyteles hypoxanthus)

2005 ◽  
Vol 76 (1) ◽  
pp. 33-36 ◽  
Author(s):  
Carla B. Possamai ◽  
Robert J. Young ◽  
Regiane C.R. de Oliveira ◽  
Sergio L. Mendes ◽  
Karen B. Strier
Keyword(s):  
Related Variation ◽  
Age Related

scholarly journals Age-related variation in mobility independence among wheelchair users with spinal cord injury: A cross-sectional study

2016 ◽  
Vol 39 (2) ◽  
pp. 180-189 ◽  
Author(s):  
Timo Hinrichs ◽  
Veronika Lay ◽  
Ursina Arnet ◽  
Inge Eriks-Hoogland ◽  
Hans Georg Koch ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Wheelchair Users ◽  
Related Variation ◽  
Age Related ◽  
Cord Injury

scholarly journals Sex- and age-related variation in metal content of penguin feathers

Ecotoxicology ◽  
2015 ◽  
Vol 25 (2) ◽  
pp. 431-438 ◽  
Author(s):  
Stefania Squadrone ◽  
Maria Cesarina Abete ◽  
Paola Brizio ◽  
Gabriella Monaco ◽  
Silvia Colussi ◽  
...  
Keyword(s):  
Metal Content ◽  
Related Variation ◽  
Age Related

scholarly journals Age Related Variation in Feminine Handwriting among Population Groups of Delhi, India

2018 ◽  
Vol 6 (1) ◽  
pp. 1-6
Author(s):  
Vijit Deepani ◽  
A.K Kapoor ◽  
Monika Saini
Keyword(s):  
Significant Variation ◽  
Research Result ◽  
Age Groups ◽  
Population Group ◽  
Population Groups ◽  
Related Variation ◽  
Age Related ◽  
Significant Difference ◽  
Micro Features ◽  
Lower Loop

Background: Handwriting is a uniquely human trait which progresses and evolves during lifetime and declines with age. The aim of the present paper is to assess variation in handwriting features with age among female writers of select population groups of Delhi, India (for roman script). Method: A total of 405 handwritten samples were obtained from female (n=405) writers in the age range of 14-60 years. Writers were stratified into three age groups (≤ 18 years, 19-38 years and ≥39 years) in accordance to population group. Macro- and micro-features of handwriting were extracted from the scanned handwritten samples. These features were subjected to statistical analysis in the objective driven research. Result: The mean difference among age groups for pen pressure, height of handwriting and handwriting connectivity was statistically significant (p < 0.001). Significant difference was also observed among age groups for all micro-features of handwriting selected in the present study, namely, nature of ‘i’ – dot (p < 0.001), nature of lower loop of ‘g’ (p < 0.01); nature of‘d’- stem (p < 0.01), nature of ‘m’-hump (p < 0.05) and ‘r’- shape (p < 0.001). Conclusion: The present study showed that there was a significant variation in both macro- and micro- features of handwriting with respect to age of the writer. Pen pressure, height of handwriting and handwriting connectivity were prominent macro-features that addressed age related variation in handwriting. In addition, significant variation was observed among age groups for all micro-features of handwriting selected in the present study. The present study has immense forensic significance as it can assist to analyze age of the writer on the basis of handwriting characteristics.

scholarly journals Demographic age-related variation in Circle of Willis completeness assessed by digital subtraction angiography

2020 ◽  
Vol 6 (1) ◽  
pp. 31 ◽  
Author(s):  
CiaránJ Powers ◽  
RyanG Eaton ◽  
VarunS Shah ◽  
David Dornbos III ◽  
OrelA Zaninovich ◽  
...  
Keyword(s):  
Digital Subtraction Angiography ◽  
Circle Of Willis ◽  
Digital Subtraction ◽  
Related Variation ◽  
Age Related

Aging, cognition, and the brain: effects of age-related variation in white matter integrity on neuropsychological function

2018 ◽  
Vol 23 (7) ◽  
pp. 831-839 ◽  
Author(s):  
Yang-Teng Fan ◽  
Ya-Wen Fang ◽  
Ya-Ping Chen ◽  
Eric D. Leshikar ◽  
Ching-Po Lin ◽  
...  
Keyword(s):  
White Matter ◽  
White Matter Integrity ◽  
Neuropsychological Function ◽  
Related Variation ◽  
Age Related ◽  
The Brain

Ten. Sex- and age-related variation in reproductive effort of northern elephant seals

1994 ◽  
pp. 169-210 ◽  
Author(s):  
Charles J. Deutsch ◽  
Daniel E. Crocker ◽  
Daniel P. Costa ◽  
Burney J. Le Boeuf
Keyword(s):  
Reproductive Effort ◽  
Elephant Seals ◽  
Related Variation ◽  
Age Related ◽  
Northern Elephant Seals

scholarly journals Age-Related Variation of Bacterial and Fungal Communities in Different Body Habitats across the Young, Elderly, and Centenarians in Sardinia

mSphere ◽  
2020 ◽  
Vol 5 (1) ◽  
Author(s):  
Lu Wu ◽  
Tiansheng Zeng ◽  
Massimo Deligios ◽  
Luciano Milanesi ◽  
Morgan G. I. Langille ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Oral Cavity ◽  
Microbial Communities ◽  
Aging Process ◽  
Fungal Communities ◽  
Mediterranean Population ◽  
Related Variation ◽  
Human Microbiota ◽  
Age Related ◽  
Age Range

ABSTRACT Human body microbes interact with the host, forming microbial communities that are in continual flux during the aging process. Previous studies have mostly focused on surveying a single body habitat to determine the age-related variation in the bacterial and fungal communities. A more comprehensive understanding of the variation in the human microbiota and mycobiota across multiple body habitats related to aging is still unclear. To obtain an integrated view of the spatial distribution of microbes in a specific Mediterranean population across a wide age range, we surveyed the bacterial and fungal communities in the skin, oral cavity, and gut in the young, elderly, and centenarians in Sardinia using 16S rRNA gene and internal transcribed spacer 1 (ITS1) sequencing. We found that the distribution and correlation of bacterial and fungal communities in Sardinians were largely determined by body site. In each age group, the bacterial and fungal communities found in the skin were significantly different in structure. In the oral cavity, age had a marginal impact on the structures of the bacterial and fungal communities. Furthermore, the gut bacterial communities in centenarians clustered separately from those of the young and elderly, while the fungal communities in the gut habitat could not be separated by host age. IMPORTANCE Site-specific microbial communities are recognized as important factors in host health and disease. To better understand how the human microbiota potentially affects and is affected by its host during the aging process, the fundamental issue to address is the distribution of microbiota related to age. Here, we show an integrated view of the spatial distribution of microbes in a specific Mediterranean population (Sardinians) across a wide age range. Our study indicates that age plays a critical role in shaping the human microbiota in a habitat-dependent manner. The dynamic age-related microbiota changes we observed across multiple body sites may provide possibilities for modulating microbe communities to maintain or improve health during aging.

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