1. Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Southwest University School of Life Sciences, Chongqing 400715, China
2. Department of Computational Mathematics, Science and Engineering, Michigan State University, MI 48824, USA
3. Department of Genome Oriented Bioinformatics Wissenschaftszentrum Weihenstephan, TU Muenchen Maximus-von-Imhof-Forum 3, Freising 85354, Germany