Allochronic differentiation among Daphnia species, hybrids and backcrosses: the importance of sexual reproduction for population dynamics and genetic architecture.

Abstract excerpt

Seasonal dynamics of the abundance, sexual reproduction and genetic architecture in a Daphnia hyalina-galeata hybrid complex were studied in the large and deep Lake Constance. We found evidence for the occurrence of first and second order hybridization. Our study revealed strong differences between the parental species not only regarding their seasonal dynamics, genetic architecture and diversity, but also their...

Topics

• Animals
• Crosses, Genetic
• Daphnia
• Fresh Water
• Gene Frequency
• Genetics, Population
• Genotype
• Germany
• Hybridization, Genetic
• Isoenzymes
• Population Dynamics
• Reproduction
• Seasons
• Species Specificity