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Keywords: Senescence
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Journal Articles
J Exp Biol (2020) 223 (21): jeb235002.
Published: 06 November 2020
... among conspecific populations, and that these differences might be an overlooked legacy of past biogeographic processes. Antioxidant Oxidative stress Range expansion Senescence Vertebrates Ageing is a ubiquitous process of decline in physiological function, survival and fecundity with...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (12): jeb223057.
Published: 17 June 2020
... senescence in this population. Additionally, we detected mixed evidence for a trade-off between reproduction and immune health. References Baker , S. , Kessler , E. , Darville-Bowleg , L. and Merchant , M. ( 2019 ). Different mechanisms of serum complement activation in the plasma...
Journal Articles
J Exp Biol (2019) 222 (13): jeb194688.
Published: 02 July 2019
... cell senescence. By contrast, the redox signalling hypothesis states that a trade-off between signalling and biochemical oxidative stress underlies the regulation of reactive oxygen species production and their subsequent control. Finally, I critically appraise our current knowledge of oxidative stress...
Journal Articles
J Exp Biol (2019) 222 (12): jeb200246.
Published: 25 June 2019
... accelerated aging. We contrasted markers of oxidative damage with antioxidant profiles across age and sex for propulsive (longissismus dorsi) and maneuvering (pectoralis) muscles of Weddell seals to determine whether previously observed morphological senescence is associated with oxidative stress. In...
Journal Articles
In collection:
Neuroethology
J Exp Biol (2018) 221 (19): jeb185751.
Published: 08 October 2018
.... Transcriptome analyses in other tissues demonstrate that these molecular changes are not generalized markers of senescence, but instead, specific features of the optic glands. Our study expands the classic optic gland–pituitary gland analogy and more specifically, it indicates that, rather than a single ‘self...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (15): jeb181586.
Published: 10 August 2018
...-1-1/ Highlighted Article: Faster embryonic growth rate, manipulated using incubation temperature, results in shorter telomere length at hatching in a wild bird species, the common tern. Ageing Embryonic development Cell division Life-history trade-off Lifespan Senescence...
Journal Articles
J Exp Biol (2018) 221 (14): jeb183228.
Published: 26 July 2018
...Joseph W. Margotta; Stephen P. Roberts; Michelle M. Elekonich ABSTRACT Frequent and highly aerobic behaviors likely contribute to naturally occurring stress, accelerate senescence and limit lifespan. To understand how the physiological and cellular mechanisms that determine the onset and duration...
Journal Articles
J Exp Biol (2015) 218 (5): 668–674.
Published: 01 March 2015
...-life performance. Telomere length Life-history evolution Senescence Telomere dynamics Cohort effects One of the principal aims of evolutionary ecology is to understand the mechanisms underlying individual variation in longevity and fecundity. Telomere dynamics link cellular processes...
Journal Articles
J Exp Biol (2014) 217 (9): 1437–1443.
Published: 01 May 2014
...Steven J. Lane; W. Anthony Frankino; Michelle M. Elekonich; Stephen P. Roberts The effects of flight behavior on physiology and senescence may be profound in insects because of the extremely high metabolic costs of flight. Flight capacity in insects decreases with age; in contrast, limiting flight...
Journal Articles
J Exp Biol (2013) 216 (15): 2879–2888.
Published: 01 August 2013
... directly causes somatic damage. Oxidative stress, an overproduction of reactive oxygen species in relation to cellular defences, can correlate with reproductive investment and has been implicated as a pathway leading to senescence. This has led to the suggestion that this aspect of physiology could be an...
Includes: Supplementary data
Journal Articles
J Exp Biol (2013) 216 (9): 1638–1649.
Published: 01 May 2013
... transition between short-lived and extremely long-lived phenotypes with negligible senescence. Among honey bee workers, short to intermediate lifespans are typical for summer castes, while the winter caste can live up to 10 times longer. For summer castes, experimental interventions could predictably...
Journal Articles
J Exp Biol (2013) 216 (8): 1388–1397.
Published: 15 April 2013
... the Glanville fritillary butterfly ( Melitaea cinxia ). Measurements of MR peak showed significant repeatability. Senescence occurred only shortly before death. RMR showed a U-shaped relationship with age and very low repeatability. Intraspecific association between metabolic rates and lifespan was...
Includes: Supplementary data
Journal Articles
J Exp Biol (2011) 214 (8): 1322–1332.
Published: 15 April 2011
...Christina C. Tolfsen; Nicholas Baker; Claus Kreibich; Gro V. Amdam SUMMARY Honeybees ( Apis mellifera ) senesce within 2 weeks after they discontinue nest tasks in favour of foraging. Foraging involves metabolically demanding flight, which in houseflies ( Musca domestica ) and fruit flies...
Includes: Supplementary data
Journal Articles
J Exp Biol (2009) 212 (24): 4027–4032.
Published: 15 December 2009
...F. Wolschin; D. Münch; G. V. Amdam SUMMARY Among insects, learning is particularly well studied in the fruit fly Drosophila melanogaster and the honeybee Apis mellifera . A senescence-dependent decline in classic pavlovian conditioning is demonstrated for both species. To understand how aging...
Includes: Supplementary data
Journal Articles
J Exp Biol (2009) 212 (16): 2604–2611.
Published: 15 August 2009
... in foragers older than 29 days. This pattern coincides with previously described age-dependent biochemical and metabolic properties of honey bee flight muscle. 21 5 2009 2009 flight development senescence Apis mellifera A critical issue in life history theory is how...
Journal Articles
J Exp Biol (2007) 210 (19): 3407–3414.
Published: 01 October 2007
... 2007 2007 ageing basal metabolic rate body condition disposable soma theory diurnal rhythm long-lived seabirds oxidative stress hypothesis Pagodroma nivea senescence Ageing (or senescence) is a decline in physiological functioning with age accompanied by a decrease in...
Journal Articles
J Exp Biol (2004) 207 (9): 1523–1532.
Published: 01 April 2004
... life extension senescence Blastogenesis, which in some colonial tunicate species is a cyclical and synchronized organogenesis process, is an indispensable developmental operation in modular organisms. This phenomenon is particularly important in the life history of the botryllid ascidians...
Journal Articles
J Exp Biol (2003) 206 (24): 4453–4465.
Published: 15 December 2003
... correspondence (e-mail: alr17@cwru.edu ) 8 9 2003 © The Company of Biologists Limited 2003 2003 senescence walking arthropod central nervous system kinematics In all animals, the aging process is accompanied by physiological and behavioral changes. Physiological changes, such as...