Abstract：
:Across latitudinal clines, the juvenile developmental rates of ectotherms often covary with the length of the growing season, due to life-history trade-offs imposed by the time-constrained environments. However, as the start of the growing season often varies substantially across years, adaptive parental effects on juvenile developmental rates may mediate the costs of a delayed season. By employing a meta-analysis, we tested whether larval developmental rates across a latitudinal cline of the common frog (Rana temporaria) are affected by fluctuating onsets of breeding, across years. We predicted that larval developmental rate will be inversely related to the onset of breeding, and that northern populations will be more prone to shorten their developmental rate in response to late breeding, as the costs of delayed metamorphosis should be highest in areas with a shorter growing season. We found that the larval period of both northern and southern populations responded to parental environmental conditions to a similar degree in absolute terms, but in different directions. In northern populations, a late season start correlated with decreased development time, suggesting that the evolution of parental effects aids population persistence in time-constrained environments. In southern populations, late season start correlated with increased development time, which could potentially be explained as a predator avoidance strategy. Our findings suggest that local ecological variables can induce adaptive parental effects, but responses are complex, and likely trade-off with other ecological factors.
journal_name
Oecologiajournal_title
Oecologiaauthors
Rowiński PK,Laurila A,Gotthard K,Sowersby W,Lind MI,Richter-Boix A,Eckerström-Liedholm S,Rogell Bdoi
10.1007/s00442-020-04642-8subject
Has Abstractpub_date
2020-04-01 00:00:00pages
1013-1022issue
4eissn
0029-8549issn
1432-1939pii
10.1007/s00442-020-04642-8journal_volume
192pub_type
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