Crustacea / Fertility / Daphnia / Transcription Factors / Multidisciplinary / Signal Transduction / Sex ratio / Female / Animals / Male / Population Density / PLoS one / Molecular cloning / The Endocrine System Function / Pyridines / Amino Acid Sequence / Ligands / Signal Transduction / Sex ratio / Female / Animals / Male / Population Density / PLoS one / Molecular cloning / The Endocrine System Function / Pyridines / Amino Acid Sequence / Ligands