Is group size related to longevity in mammals?
نویسندگان
چکیده
منابع مشابه
Is group size related to longevity in mammals?
Life-history theory predicts that reduced extrinsic risk of mortality should increase species longevity over evolutionary time. Increasing group size should reduce an individual's risk of predation, and consequently reduce its extrinsic risk of mortality. Therefore, we should expect a relationship between group size and maximum longevity across species, while controlling for well-known correlat...
متن کاملMitochondrially encoded methionine is inversely related to longevity in mammals.
Methionine residues in proteins react readily with reactive oxygen species making them particularly sensitive to oxidation. However, because oxidized methionine can be reduced back in a catalyzed reaction, it has been suggested that methionine residues act as oxidant scavengers, protecting not only the proteins where they are located but also the surrounding macromolecules. To investigate wheth...
متن کاملIs sex-biased ectoparasitism related to sexual size dimorphism in small mammals of Central Europe?
Sexual size dimorphism (SSD) in mammals reveals the extent of sexual selection, which may in turn explain why males are often more infected by parasites than females and that parasites may contribute to the association between SSD and male-biased mortality. Here, we investigated the relationship between SSD in small mammals of Central Europe and the differences in sex infection by fleas. A comp...
متن کاملSize-Related Changes in Foot Impact Mechanics in Hoofed Mammals
Foot-ground impact is mechanically challenging for all animals, but how do large animals mitigate increased mass during foot impact? We hypothesized that impact force amplitude scales according to isometry in animals of increasing size through allometric scaling of related impact parameters. To test this, we measured limb kinetics and kinematics in 11 species of hoofed mammals ranging from 18-3...
متن کاملIs stress management related to workforce productivity?
The purpose of the study was to determine the relationship between stressmanagement and workforce productivity of Amol Industrial Park located inMazandaran Province. The total population size in the research was 250 from topmanagers, middle managers and supervisors responsible in the before-mentionedIndustrial Park and the sample size was determined through Morgan samplepopulation volume table ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Biology Letters
سال: 2010
ISSN: 1744-9561,1744-957X
DOI: 10.1098/rsbl.2010.0348