Dear Sir or Madame, My name is Tereza Forejtkova and I´m a student of the Faculty of Science, University of Hradec Kralove, CZ. I´m writing a bachelor thesis on the Sex determination in day geckos of the genus Phelsuma, the supervisor is Dr. Petr Bogusch. My work is based on research of all available literature considered with this topic, but I would also like to supplement the knowledge and experience of breeders. In particular, I´m interested in sex determination by temperature and other factors. If you keep notes of temperature, time of incubaion and sex of the hatched young, I would like to kindly ask you to share your results with me, perhaps in the form of a MS Excel file. Thank you for your assistance. Contact: Tereza Forejtkova, tess.for@seznam.cz