Ho Young Suk Laboratory












Our ongoing research project can be grouped into four research areas.


1. Sexual selection and genetic quality
Korean rosy bitterling (Rhodeus sinensis)We focus on mate choice, parental behavior and the genetic architecture of fitness (i.e. additive and non-additive genetic effects) in bitterling, stickleback and gobies. We are also interested in genetic compatibility and the interacting effects of male and female genotypes (i.e. major histocompatibility complex) on various offspring fitness. The results obtained from this research area can be utilized to upgrade current conservation protocols, where selection pressure is minimized and individuals may be coerced to reproduce with non-optimal mates in captivity.


2. Metapopulation genetics
Korean chub (Zacco koreanus)Assessing the contribution of various within-drainage processes to intraspecific genetic structure remains a major challenge in population biology. Using population genetic data analysis including Bayesian and coalescent approaches, we conduct studies about demographic and dispersal dynamics among local populations in Korean chub and splendid dace to gain insight into contemporary and historical micro-evolutionary processes in Korean freshwater systems.


3. Contemporary evolution
Large mouth bass (Micropterus salmoides)
Human footprint is now widespread in all the ecosystems. Construction of large structure in many watercourses and invasive species are among the anthropogenic changes that have had the most profound ecological and evolutionary consequences. The aim of this research is to understand the particular roles and impact of anthropogenic factors such as man-made structures and species invasion on the genetic structure of freshwater populations as well as the genetic basis of local adaptation. 


4. Discovery of biodiversity – cryptic species
Rhinogobius brunneus A:CO B:CB C:OR Types
As the genetic differentiation is not always be accompanied by substantial phenotypic change, cryptic species - animals that appear identical but are genetically quite distinct - may be widespread in animals and plants all over the world, and contemporary count of nominal species is not likely to be an appropriate way to estimate our planet’s biodiversity. We study with Korean chub and gobiid species  to provide insights into the natural pressures influencing the birth of new species, and more importantly, have key implications in conservation biology ranging from management planning to resource protection.



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