
%0 Journal Article
%A Booth, David T. 
%A Astill, Katherine 
%T Incubation temperature, energy expenditure and hatchling size in the green turtle (<emph type="2">Chelonia mydas</emph>), a species with temperature-sensitive sex determination
%J Australian Journal of Zoology
%D 2001/09/26
%V 49
%N 4
%P 389-396
%K 
%R https://doi.org/10.1071/ZO01006
%U https://www.publish.csiro.au/paper/ZO01006 
%X Eggs from the Heron Island, Great Barrier Reef, nesting population of green turtles (Chelonia mydas) were incubated at all-male-determining (26&#x02DA;C) and all-female-determining (30&#x02DA;C) temperatures. Oxygen consumption and embryonic growth were monitored throughout incubation, and hatchling masses and body dimensions were measured from both temperatures. Eggs hatched after 79 and 53 days incubation at 26&#x02DA;C and 30&#x02DA;C respectively. Oxygen consumption at both temperatures increased to a peak several days before hatching, a pattern typical of turtle embryos, and the rate of oxygen was higher at 30&#x02DA;C than 26&#x02DA;C. The total amount of energy consumed during incubation, and hatchling dimensions, were similar at both temperatures, but hatchlings from 26&#x02DA;C had larger mass, larger yolk-free mass and smaller residual yolks than hatchlings from 30&#x02DA;C. Because of the difference in mass of hatchlings, hatchlings from 30&#x02DA;C had a higher production cost. 
