dilluns, 12 de març del 2012

Feeding and...

In Ernst&Lovich book and in articles I have talked about before, there is some data about this species behavior when the hibernation finishes. In Pennsylvania, they become active at a water temperature of   3ºC (other species don't do it until the water reaches  8-10ºC),  they can courtship at temperatures of 8,5ºC and they start feeding when the water temperature is about 14-15ºC.
In the northern areas of their range, the lowest air temperature at which they have started activity and courtship is 2ºC (it doesn't mention the water temperature)

Yesterday I saw the two terrapins. I don't see them often, the night temperatures are still cold. Anyway, yesterday, both, the male and the female, ate an earthworm. By the end of the month I will know the water and air temperature at this moment, but I don't think it is too different from the one that I measured when the male ate for the first time on February the 26th. (12,61ºC and 8,61ºC at 10 and 50 cm depth).






As it happened in February, the male approached the female but any chasing started. She ignored him. The pictures are somewhat blurry because the animals where in the deepest part of the pond. I don't think the temperature was lower than 8,5ºC, so, some chasing will start soon hopefully.



At 50 cm depth, the female in front




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