Parental age does not influence offspring telomeres during early life in common gulls (Larus canus)

Abstract

Parental age can affect offspring telomere length through heritable and epigenetic-like effects, but at what stage during development these effects are established is not well known. To address this, we conducted a cross-fostering experiment in common gulls (Larus canus) that enabled us distinguish between pre-and post-natal parental age effects on offspring telomere length. Whole clutches were exchanged after clutch completion within and between parental age classes (young and old) and blood samples were collected from chicks at hatching and during the fastest growth phase (11 days later) to measure telomeres. Neither the ages of the natal nor the foster parents' predicted the telomere length or the change in telomere lengths of their chicks. Telomere length was repeatable within chicks, but increased across development (repeatability = 0.55, Intraclass Correlation Coefficient within sampling events 0.934).Telomere length and the change in telomere length were not predicted by post-natal growth rate. Taken together, these findings suggest that in common gulls, telomere length during early life is not influenced by parental age or growth rate, which may indicate that protective mechanisms buffer telomeres from external conditions during development in this relatively long-lived species.

Parental age at conception on mouse lemur’s offspring longevity: Sex-specific maternal effects

“…If strong evidence exists for genetic inheritance of TL, conclusions on relationship between parental age at conception and TL of offspring depend on the species studied. In several studies (mostly birds), TL shortens as parents age and predicts offspring TL with sex-specific differences in TL inheritance [ 6 , 8 , 40 – 47 ]. By constrast, a weak or no relationship between TL and parental TL has been observed in other species [ 45 – 48 ].…”

Parental age at conception on mouse lemur’s offspring longevity: sex-specific maternal effects

“…In several studies (mostly birds), TL shortens as parents age and predicts offspring TL with sex-specific differences in TL inheritance [4,6,[37][38][39][40][41]. By constrast, a weak or no relationships between TL and parental TL has been observed in other species [42][43][44][45].…”

Editorial 2023

“…Additional studies also emphasize that what qualifies as a stressor depends greatly on the biology of the organism (Friesen et al, 2022;Wood et al, 2022), and demonstrate there is much to be gained by examining telomere dynamics across diverse forms of life (Bae et al, 2022;Boonekamp et al, 2022;McLennan et al, 2022;Power et al, 2022;Rouan et al, 2022). The third suite of articles in this special issue addresses the idea that telomeres may mediate life history trade-offs, examining correlations between telomere length and reproductive fitness (Heidinger et al, 2022;Kauzálová et al, 2022;Ravindran et al, 2022;Sepp et al, 2022) (Bauch et al, 2022;Kärkkäinen, Briga, et al 2022;Le Pepke, Kvalnes, Lundregan, et al, 2022;Sparks et al, 2022;Vedder et al, 2022).…”