1 01oc 335 05oc 05 tb less variable for pregnant

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Unformatted text preview: ales ost- 32.1 + 0.1oC 33.5 + 0.5oC 0.5 Tb less variable for pregnant females less First hypothesis supported First hypothesis supported Females choose lower Females choose a lower Tb when when pregnant pregnant Temperatures chosen in the laboratory Temperatures chosen in the laboratory similar similar to temperatures observed in the field field So, what So, what is detrimental about higher Tb? Testing Hypothesis Testing Hypothesis 2 Pregnant females Pregnant females Incubator Incubator temperatures: Day = 35.7oC, Night = steady decline to 15oC Day 35 Night steady decline to 15 Day Day = 32.0oC, Night = steady decline to 15oC Thermoregulation treatment Thermoregulation treatment females females in terraria with incandescent light able to regulate able to regulate Tb light light off at night Testing hypothesis Testing hypothesis 2 Maintain pregnant females in three conditions Maintain pregnant females in three conditions (35 (35o, 32o, & Treg) until young are born Record: Record: growth growth of female (increase in mass, SVL) abnormalities abnormalities of neonates dry dry mass of neonates yolk yolk in neonates growth growth of neonates over 9 days (mass, SVL) Testing Testing hypothesis 2 Predict: Predict: If high Tb harms pregnant females then 35 treatment should have females, then 35o treatment should have lower lower survivorship lower growth in mass or length lower growth in mass or length Predict: Predict: If high Tb harms embryos, th 35 then 35o treatm...
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