TY - JOUR
T1 - Heritability of progeny size in a terrestrial isopod
T2 - Transgenerational environmental effects on a life history trait
AU - Carter, M. J.
AU - Lardies, M. A.
AU - Nespolo, R. F.
AU - Bozinovic, F.
N1 - Funding Information:
PE Neill provided valuable comments that greatly improved the manuscript. Financial support was provided by a CONICYT doctoral thesis fellowship to MAL and by FONDAP 1501-001 Program 1 to FB.
PY - 2004/11/1
Y1 - 2004/11/1
N2 - Maternal effects, the environment that mothers provide to their offspring, their provision of nutrients and the environment that offspring of the same clutch share, have come to be recognized as an important influence on offspring fitness. In addition, in invertebrates, maternal effects and common environment may change according to a mother's diet. We tested for the changes in quantitative genetic parameters in a half-sib design where mothers were fed diets varying in nutrient content. Surprisingly, we found that not only maternal and common environmental variance changed with experimental diets but also there were significant changes in narrow-sense heritabilities, with corresponding h2 values of 0.61 (high protein), 0.08 (high carbohydrate) and 0.001 (equal carbohydrate:protein). Our results show how an environmentally driven evolutionary process could occur in nature, since the response to selection could change dramatically according to the composition of the diet that females are ingesting.
AB - Maternal effects, the environment that mothers provide to their offspring, their provision of nutrients and the environment that offspring of the same clutch share, have come to be recognized as an important influence on offspring fitness. In addition, in invertebrates, maternal effects and common environment may change according to a mother's diet. We tested for the changes in quantitative genetic parameters in a half-sib design where mothers were fed diets varying in nutrient content. Surprisingly, we found that not only maternal and common environmental variance changed with experimental diets but also there were significant changes in narrow-sense heritabilities, with corresponding h2 values of 0.61 (high protein), 0.08 (high carbohydrate) and 0.001 (equal carbohydrate:protein). Our results show how an environmentally driven evolutionary process could occur in nature, since the response to selection could change dramatically according to the composition of the diet that females are ingesting.
KW - Animal model
KW - Evolutionary process
KW - Maternal effects
KW - Narrow-sense heritability
KW - Phenotypic plasticity
KW - Terrestrial isopod
UR - http://www.scopus.com/inward/record.url?scp=7044226485&partnerID=8YFLogxK
U2 - 10.1038/sj.hdy.6800523
DO - 10.1038/sj.hdy.6800523
M3 - Article
C2 - 15254492
AN - SCOPUS:7044226485
SN - 0018-067X
VL - 93
SP - 455
EP - 459
JO - Heredity
JF - Heredity
IS - 5
ER -