scholarly journals Understanding the evolution of infidelity using the Seychelles warbler system

2019 ◽  
Author(s):  
Sara Raj Pant
Keyword(s):  
Seychelles Warbler

Seychelles Warbler (Acrocephalus sechellensis)

2020 ◽  
Author(s):  
Andrzej Dyrcz ◽  
Chris Sharpe
Keyword(s):  
Seychelles Warbler

scholarly journals Telomere heritability and parental age at conception effects in a wild avian population

2020 ◽  
Author(s):  
Alexandra Sparks ◽  
Lewis G. Spurgin ◽  
Marco van der Velde ◽  
Eleanor A. Fairfield ◽  
Jan Komdeur ◽  
...  
Keyword(s):  
Animal Models ◽  
Telomere Length ◽  
Paternal Age ◽  
Parental Age ◽  
Wild Populations ◽  
Evolutionary Potential ◽  
Confounding Variables ◽  
In The Wild ◽  
Seychelles Warbler ◽  
Heritability Estimates

Individual variation in telomere length is predictive of health and mortality risk across a range of species. However, the relative influence of environmental and genetic variation on individual telomere length in wild populations remains poorly understood. In previous studies, heritability of telomere length has primarily been calculated using parent-offspring regression, but shared environments can confound such estimates. Furthermore, associations with age and parental age at conception effects are typically not accounted for but can also bias heritability estimates. To control for these confounding variables, quantitative genetic ‘animal models’ can be used. However, the few studies on wild populations using this approach have been restricted by power. Here, we investigated the heritability of telomere length and parental age at conception effects in the Seychelles warbler using 2664 telomere length measures from 1318 birds over 20 years and a multi-generational pedigree. We found a weak negative within-paternal age at conception effect (as fathers aged, their offspring had shorter telomeres) and a weak positive between-maternal age at conception effect (females that survived to older ages had offspring with longer telomeres). While parent–offspring regressions did not detect heritability, animal models provided evidence that heritability of telomere length was low in this population. Environmental and technical variation largely influenced telomere length and would have biased heritability estimates if unaccounted for. Estimating the heritability of telomere length is complex, requiring large sample sizes and accounting for confounding effects in order to improve our understanding of the evolutionary potential of telomere length in the wild.

scholarly journals Oxidative status and fitness components in the Seychelles warbler

2017 ◽  
Vol 31 (6) ◽  
pp. 1210-1219 ◽  
Author(s):  
Janske Crommenacker ◽  
Martijn Hammers ◽  
Jildou Woude ◽  
Marina Louter ◽  
Peter Santema ◽  
...  
Keyword(s):  
Oxidative Status ◽  
Fitness Components ◽  
Seychelles Warbler

scholarly journals Pre-ovulation control of hatchling sex ratio in the Seychelles warbler

2002 ◽  
Vol 269 (1495) ◽  
pp. 1067-1072 ◽  
Author(s):  
J. Komdeur ◽  
M. J. L. Magrath ◽  
S. Krackow
Keyword(s):  
Sex Ratio ◽  
Seychelles Warbler

The song of the Seychelles Warbler Acrocephalus sechellensis, an island endemic

Ibis ◽  
2008 ◽  
Vol 135 (2) ◽  
pp. 190-195 ◽  
Author(s):  
CLIVE K. CATCHPOLE ◽  
JAN KOMDEUR
Keyword(s):  
Island Endemic ◽  
Seychelles Warbler
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