Molch
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I wonder if there are any good data on just how much egg development varies with temperature. Egg development times are usually given without a temperature value, which makes them somewhat sketchy.
Does even a few degrees colder/warmer make a big difference? What other factors affect development times, e.g., pH, crowdedness, oxygen levels etc?
- My I.a. apuanus eggs have all taken about 30 days at ca. 58-60 F.
- I have a Cynops pyrrhogaster egg (my one and only; all others were duds, go figure; I might have to re-name the female "Dudley") that was laid on March 5 - that's almost 6 weeks ago now, and it still hasn't hatched (also at 58-60 F). The hatchling looks ready and is moving around inside the egg and appears normal. Yet I read that egg development in C. pyrrh is supposed to be around 3-4 weeks.
- values for Triturus spp. given on this site are about 14-21 days. Is Triturus that much faster than apuanus or Cynops, or is that assuming a higher temperature? At 60 F, how long might a Triturus egg take to hatch?
Does even a few degrees colder/warmer make a big difference? What other factors affect development times, e.g., pH, crowdedness, oxygen levels etc?
- My I.a. apuanus eggs have all taken about 30 days at ca. 58-60 F.
- I have a Cynops pyrrhogaster egg (my one and only; all others were duds, go figure; I might have to re-name the female "Dudley") that was laid on March 5 - that's almost 6 weeks ago now, and it still hasn't hatched (also at 58-60 F). The hatchling looks ready and is moving around inside the egg and appears normal. Yet I read that egg development in C. pyrrh is supposed to be around 3-4 weeks.
- values for Triturus spp. given on this site are about 14-21 days. Is Triturus that much faster than apuanus or Cynops, or is that assuming a higher temperature? At 60 F, how long might a Triturus egg take to hatch?