geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Sex differences in ageing in natural populations of vertebrates


, : Sex differences in ageing in natural populations of vertebrates. Proceedings. Biological Sciences 274(1629): 3097-3104

In many long-lived vertebrates (including humans), adult males have shorter lifespans than adult females, partly as a result of higher annual rates of mortality in males and partly owing to sex differences in the rate of ageing. A probable explanation of the evolution of sex differences in ageing is that, in polygynous species, intense intrasexual competition between males restricts the number of seasons for which individual males are able to breed successfully, weakening selection pressures favouring adult longevity in males relative to females. If this is the case, sex differences in adult longevity and in the onset and rate of senescence should be greater in polygynous species than in monogamous ones and their magnitude should be related to the duration of effective breeding males compared with females. Here, we use data from longitudinal studies of vertebrates to show that reduced longevity in adult males (relative to females) is commonly associated with a more rapid decline in male than female survival with increasing age and is largely confined to polygynous species. The magnitude of sex differences in adult longevity in different species is consistently related to the magnitude of sex differences in the duration of effective breeding, calculated across surviving adults. Our results are consistent with the suggestion that sex differences in senescence in polygynous species are a consequence of weaker selection for longevity in males than females.

US$19.90

PMID: 17939988

DOI: 10.1098/rspb.2007.1138


Other references

Giban, J., 1954: Field voles as pests of orchards. Damage caused by, and identification and control of 2 vole species, Arvicola terrestris and Pitymys subterraneus, are described. These pests eat the root systems of most fruit trees, but there is some indication of varietal preference in apples. M...

Rees, G.B.; Broughton Pipkin, F.; Symonds, E.M.; Patrick, J.M., 1990: A longitudinal study of respiratory changes in normal human pregnancy with cross-sectional data on subjects with pregnancy-induced hypertension. Respiratory frequency, tidal volume, minute ventilation, oxygen consumption, carbon dioxide production, and end-tidal carbon dioxide tension were measured longitudinally during pregnancy and post partum in 20 normal subjects with a computer-assist...

Whitson, H.E.; Steinhauser, K.; Ammarell, N.; Whitaker, D.; Cousins, S.W.; Ansah, D.; Sanders, L.L.; Cohen, H.J., 2012: Categorizing the effect of comorbidity: a qualitative study of individuals' experiences in a low-vision rehabilitation program. To identify generalizable ways that comorbidity affects older adults' experiences in a health service program directed toward an index condition and to develop a framework to assist clinicians in approaching comorbidity in the design, deliver...

Waal, B.C.W. van der, 2000: Fish as a resource in a rural river catchment in the Northern Province, South Africa. Results of surveys on fishing and fish consumption of the rural population in the Mutshindudi River valley, in the northeastern corner of the Northern Province, South Africa, are presented. A total of 542 questionnaires were completed in 23 villag...

Shi, Z.; Zhou, A.; Liu, P.; Zhang, P.; Han, W., 2011: An EEG study on the effect of self-relevant possessive pronoun: self-referential content and first-person perspective. The present study aimed at examining the brain mechanism of the effect of self-relevant possessive pronoun (SRPP). Eighteen participants observed the following stimuli: "wo de" (Chinese for "my"/"mine"), "ta de&q...

Anonymous, 1991: Marine geology activities of the Geological Survey of Japan, 1988-1989. Proceedings of the Session of the Committee for Co-ordination of Joint Prospecting for Mineral Resources in Asian Offshore Areas (CCOP) 26, Part 2: 37-43

Beniya, A.; Isomura, N.; Hirata, H.; Watanabe, Y., 2014: Morphology and chemical states of size-selected Pt(n) clusters on an aluminium oxide film on NiAl(110). The adsorption states of size-selected Ptn clusters (7 ≤ n ≤ 20) soft-landed on an Al2O3/NiAl(110) substrate were investigated using scanning tunneling microscopy, infrared reflection absorption spectroscopy, and temperature programmed desorpt...

Wang, Y-Qi.; Li, Z-Yong.; Cao, X-Fang.; Wang, H-Xiang.; Guo, Z-Kuan., 2013: Effects of tumor necrosis factor-α on immunoregulatory activities of mesenchymal stem cells in vitro and in vivo. Mesenchymal stem cells (MSC) are characterized by their potent immuno-regulatory activity, however our previous data have shown that MSC have no therapeutic effects on collagen-induced arthritis (CIA). To further clarify the complexity, the effect...

Betteridge, K.; Gillingham, A.; Haneklaus, S.; Schnug, E., 2003: A perspective on precision agriculture - progress and prospects. After more than a decade, precision agriculture (PA) has many expectations that have not yet been fulfilled despite the widespread use of GPS related technology for detailed mapping of soil resource parameters and associated crop yields. This pape...

Mandelbaum-Shavit, F.; Ramu, A., 1987: Dihydrofolate reductase activity in adriamycin and methotrexate sensitive and resistant P388 leukemia cells. P388 murine leukemia cells 18.4-fold more resistant to methotrexate (MTX) than the parent, drug susceptible line, were shown to possess a 1.5-fold higher dihydrofolate reductase (EC1.5.1.3) (DHFR) activity. This is in contrast to a MTX-resistant l...