Genetic and life-history consequences of extreme climate events

Vincenzi, Simone; Mangel, Marc; Jesensek, Dusan; Garza, John Carlos; Crivelli, Alain J.

doi:10.1098/rspb.2016.2118

i

Genetic and life-history consequences of extreme climate events

2017
By Vincenzi, Simone ; Mangel, Marc ; Jesensek, Dusan ; ...

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Journal Title:

Proceedings of the Royal Society B: Biological Sciences
Personal Author:

Vincenzi, Simone ; Mangel, Marc ; Jesensek, Dusan ; Garza, John Carlos ; Crivelli, Alain J.
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; SWFSC (Southwest Fisheries Science Center)
Description:

Climate change is predicted to increase the frequency and intensity of extreme climate events. Tests on empirical data of theory-based predictions on the consequences of extreme climate events are thus necessary to understand the adaptive potential of species and the overarching risks associated with all aspects of climate change. We tested predictions on the genetic and life-history consequences of extreme climate events in two populations of marble trout Salmo marmoratus that have experienced severe demographic bottlenecks due to flash floods. We combined long-term field and genotyping data with pedigree reconstruction in a theory-based framework. Our results show that after flash floods, reproduction occurred at a younger age in one population. In both populations, we found the highest reproductive variance in the first cohort born after the floods due to a combination of fewer parents and higher early survival of offspring. A small number of parents allowed for demographic recovery after the floods, but the genetic bottleneck further reduced genetic diversity in both populations. Our results also elucidate some of the mechanisms responsible for a greater prevalence of faster life histories after the extreme event.
Keywords:

General Agricultural And Biological Sciences General Biochemistry, Genetics And Molecular Biology General Environmental Science General Immunology And Microbiology General Medicine General Agricultural And Biological Sciences General Biochemistry, Genetics And Molecular Biology General Immunology And Microbiology General Agricultural And Biological Sciences General Biochemistry, Genetics And Molecular Biology General Immunology And Microbiology
Source:

Proceedings of the Royal Society B: Biological Sciences, 284(1848), 20162118
DOI:

https://doi.org/10.1098/rspb.2016.2118
ISSN:

0962-8452 ; 1471-2954
Format:

PDF
Publisher:

The Royal Society
Document Type:

Journal Article
Rights Information:

Other
Compliance:

Library
Main Document Checksum:

urn:sha-512:c9bf3eaa070177beb96b798b35a865bff08ccb46cb66029435e99e7c083a0005a0d4a3ed020c5846fa9dcf6c7e06cc7244d92ea59e43b77e48fa1df6dc952c24
Download URL:

https://repository.library.noaa.gov/view/noaa/63006/noaa_63006_DS1.pdf
File Type:

[PDF - 595.32 KB ]

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