Evolution of asexual Daphnia pulex in Japan: variations and covariations of the digestive, morphological and life history traits.

ABSTRACT:

Background

Several genetic lineages of obligate parthenogenetic Daphnia pulex, a common zooplankton species, have invaded Japan from North America. Among these, a lineage named JPN1 is thought to have started colonization as a single genotype several hundred to thousand years ago and subsequently produced many genotypes in Japan. To examine the phenotypic variations due to ecological drivers diverging the genotypes in new habitats, we measured heritability and variation in 17 traits, including life history, morphology and digestive traits, and the genetic distance among the D. pulex JPN1 genotypes in Japan.

Results

We found that most of the traits measured varied significantly among the genotypes and that heritability was highest in the morphological traits, followed by the

SUBMITTER: Tian X 

PROVIDER: S-EPMC6567566 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature