caa a22 4500 605514550 CHVBK 20210128100705.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s00360-014-0874-4 doi (NATIONALLICENCE)springer-10.1007/s00360-014-0874-4 Oxygen-dependent heat tolerance and developmental plasticity in turtle embryos [Elektronische Daten] [Liang Liang, Bao-Jun Sun, Liang Ma, Wei-Guo Du] Oxygen and temperature have previously been treated as different environmental stresses and studied separately in most cases. Although the oxygen-temperature interaction may provide new insight into proximate and evolutionary constraints on embryonic development and offspring fitness, it has rarely been studied in oviparous amniotes. We used a two-factor experiment [three oxygen concentrations (12, 22 and 30%)×two temperatures (26.5 and 34°C)] to identify the effect of the oxygen-temperature interaction on embryonic development and hatchling traits in the Chinese soft-shelled turtle, Pelodiscus sinensis. When eggs were incubated at the critically high temperature, hatching success of turtle eggs was enhanced by hyperoxia but reduced by hypoxia; this result was not observed in eggs incubated at the benign temperature. Hypoxia retarded embryonic development, and reduced body size, locomotor performance and survival rate of hatchings at the critically high temperature. However, the effects of hypoxia were greatly reduced at the benign temperature. Our study demonstrates that oxygen and temperature interact to affect not only the heat tolerance and developmental rate of embryos but also the fitness-related traits of hatchlings, suggesting that interactions among environmental factors impose significant ecological constraints on embryonic development in oviparous amniotes. Springer-Verlag Berlin Heidelberg, 2014 Critical thermal maximum nationallicence Embryonic development nationallicence Hyperoxia nationallicence Hypoxia nationallicence Oxygen limitation nationallicence Reptile nationallicence Thermal tolerance nationallicence Liang Liang Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, 100101, Beijing, People's Republic of China aut Sun Bao-Jun Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, 100101, Beijing, People's Republic of China aut Ma Liang Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, 100101, Beijing, People's Republic of China aut Du Wei-Guo Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, 100101, Beijing, People's Republic of China aut Journal of Comparative Physiology B Springer Berlin Heidelberg 185/2(2015-02-01), 257-263 0174-1578 185:2<257 2015 185 360 https://doi.org/10.1007/s00360-014-0874-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00360-014-0874-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liang Liang Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, 100101, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Sun Bao-Jun Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, 100101, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Ma Liang Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, 100101, Beijing, People's Republic of China aut NATIONALLICENCE 700 1- Du Wei-Guo Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, 100101, Beijing, People's Republic of China aut NATIONALLICENCE 773 0- Journal of Comparative Physiology B Springer Berlin Heidelberg 185/2(2015-02-01), 257-263 0174-1578 185:2<257 2015 185 360