10.5061/DRYAD.M6383TR
Fraser, Dylan J.
Concordia University
Walker, Lisa
McGill University
Yates, Matthew C.
Concordia University
Marin, Kia
Golder Associés Ltée Montréal QC Canada
Wood, Jacquelyn L.A.
Golder Associates Limited Calgary AB Canada
Bernos, Thais A.
Professionals for Fair Development Protected Areas Program Paris France
Zastavniouk, Carol
Golder Associates Limited Calgary AB Canada
Wood, Jacquelyn L. A.
Ministry of Natural Resources
Ontario Ministry of Natural Resources
Data from: Population correlates of rapid captive-induced maladaptation in
a wild fish
Dryad
dataset
2018
Captive Populations
Salvelinus fontinalis
Life History Evolution
Natural Selection and Contemporary Evolution
2018-05-23T18:22:35Z
2018-05-23T18:22:35Z
en
https://doi.org/10.1111/eva.12649
2812390 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Understanding the extent to which captivity generates maladaptation in
wild species can inform species recovery programs and elucidate wild
population responses to novel environmental change. Though rarely
quantified, effective population size (Ne) and genetic diversity should
influence the magnitude of plastic and genetic changes manifested in
captivity that reduce wild fitness. Sexually-dimorphic traits might also
mediate consequences of captivity. To evaluate these relationships, we
generated >600 full- and half-sibling families from nine wild brook
trout populations, reared them for one generation under common, captive
environmental conditions, and contrasted several fitness-related traits in
wild vs. captive lines. We found substantial variation in lifetime success
(lifetime survival and reproductive success) and life history traits among
wild populations after just one captive generation (fourteen- and
three-fold ranges across populations, respectively). Populations with
lower heterozygosity showed lower captive lifetime success, suggesting
that captivity generates maladaptation within one generation. Greater
male-biased mortality in captivity occurred in populations having
disproportionately higher growth rates in males than females. Wild
population Ne and allelic diversity had little or no influence on captive
trait expression and lifetime success. Our results have four conservation
implications: (i) Trait values and lifetime success were highly variable
across populations following one generation of captivity. (ii)
Maladaptation induced by captive breeding might be particularly intense
for the very populations practitioners are most interested in conserving,
such as those with low heterozygosity. (iii) Maladaptive sex differences
in captivity might be associated with population-dependent growth costs of
reproduction. (iv) Heterozygosity can be a good indicator of short-term,
intraspecific responses to novel environmental change.
Cape Race_final SNP dataCape Race_microsatellite data_from 2009 to
2015_with additional popnsCape Race brook trout_female_eggsize_wild and
captiveCape Race brook trout_female_fecundity_wild and captiveCape Race
survival_progeny of captive born adults in a common hatchery
environmentCape Race wild population survival in captivity to one year
2011 and 2014Cape Race wild population survival in captivity_egg to yolk
absorption_2011 and 2014_six populationsCape Race wild populations in
captivity_lengthalltimeallpopCape Race wild populations in
captivity_lengthweightallpop18monthsCape Race wild populations in
captivity_obs_freq(mortality_by_sex_by_pop)Cape Race wild populations in
captivity_weightlengthallpop3Cape Race wild populations in
captivity_weightlengthallpop7Cape Race wild populations in
captivity_weightlengthallpop12Cape Race_female_GSI_captive_wild
Cape Race
Newfoundland