Serial founder effects slow range expansion in an invasive social insect.
Nat Commun
; 15(1): 3608, 2024 Apr 29.
Article
em En
| MEDLINE
| ID: mdl-38684711
ABSTRACT
Invasive populations often experience founder effects a loss of genetic diversity relative to the source population, due to a small number of founders. Even where these founder effects do not impact colonization success, theory predicts they might affect the rate at which invasive populations expand. This is because secondary founder effects are generated at advancing population edges, further reducing local genetic diversity and elevating genetic load. We show that in an expanding invasive population of the Asian honey bee (Apis cerana), genetic diversity is indeed lowest at range edges, including at the complementary sex determiner, csd, a locus that is homozygous-lethal. Consistent with lower local csd diversity, range edge colonies had lower brood viability than colonies in the range centre. Further, simulations of a newly-founded and expanding honey bee population corroborate the spatial patterns in mean colony fitness observed in our empirical data and show that such genetic load at range edges will slow the rate of population expansion.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Variação Genética
/
Efeito Fundador
/
Espécies Introduzidas
Limite:
Animals
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article