The incubation period is dependent on temperature and is between 25 days (at 22 °C) and 45 days (at 12 to 14 °C).
ðɪ ˌɪŋkjuːbˈeɪʃən pˈiəɹɪəd ɪz dᵻpˈɛndənt ˌɔn tˈɛmpɹɪtʃɚ ænd ɪz bᵻtwˌiːn twˈɛnti fˈaɪv dˈeɪz æt twˈɛnti tˈuː dᵻɡɹˈiːz sˈiː ænd fˈoːɹɾi fˈaɪv dˈeɪz æt twˈɛlv tə fˈoːɹtiːn dᵻɡɹˈiːz sˈiː.