Are acute and acclimated thermal effects on metabolic rate modulated by cell size? A comparison between diploid and triploid zebrafish larvae
| العنوان: | Are acute and acclimated thermal effects on metabolic rate modulated by cell size? A comparison between diploid and triploid zebrafish larvae |
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| المؤلفون: | Iris L. E. van de Pol, Wilco C. E. P. Verberk, Adam Hermaniuk |
| المصدر: | Journal of Experimental Biology, 224, 1, pp. 1-10 Journal of Experimental Biology, 224, 1-10 |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, Physiology, Animal Ecology and Physiology, Developmental noise, Cell, chemistry.chemical_element, Zoology, Aquatic Science, Biology, 010603 evolutionary biology, 01 natural sciences, Oxygen, 03 medical and health sciences, medicine, Animals, Molecular Biology, Zebrafish, Ecology, Evolution, Behavior and Systematics, Cell Size, Larva, fungi, Hypoxia (environmental), Homeoviscous adaptation, Diploidy, Triploidy, 030104 developmental biology, medicine.anatomical_structure, chemistry, Insect Science, Ectotherm, Animal Science and Zoology, Ploidy |
| الوصف: | Being composed of small cells may carry energetic costs related to maintaining ionic gradients across cell membranes as well as benefits related to diffusive oxygen uptake. Here we test the hypothesis that these costs and benefits of cell size in ectotherms are temperature dependent. To study the consequences of cell size for whole-organism metabolic rate we compared diploid and triploid zebrafish larvae differing in cell size. A fully factorial design was applied combining three different rearing and test temperatures that allowed us to distinguish acute from acclimated thermal effects. Individual oxygen consumption rates of diploid and triploid larvae across declining levels of oxygen availability were measured. We found that both acute and acclimated thermal effects affected the metabolic response. In comparison to triploids, diploids responded more strongly to acute temperatures, especially when reared at the highest temperature. These observations support the hypothesis that animals composed of smaller cells (i.e. diploids) are less vulnerable to oxygen limitation in warm aquatic habitats. Furthermore, we found slightly improved hypoxia tolerance in diploids. By contrast, warm-reared triploids had higher metabolic rates when they were tested at acute cold temperature, suggesting that being composed of larger cells may provide metabolic advantages in the cold. We offer two mechanisms as a potential explanation of this result, related to homeoviscous adaptation of membrane function and the mitigation of developmental noise. Our results suggest that being composed of larger cells provides metabolic advantages in cold water, while being composed of smaller cells provides metabolic advantages in warm water. |
| وصف الملف: | application/pdf |
| تدمد: | 0022-0949 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d89a946a3e279981da3053a71ab7b986 https://hdl.handle.net/https://repository.ubn.ru.nl/handle/2066/230299 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....d89a946a3e279981da3053a71ab7b986 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00220949 |
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