{"title":"Thermal-metabolic relationships in hatchling snapping turtles during simulated seasonal cooling","authors":"Christopher L. Rowe","doi":"10.1016/j.actao.2024.104007","DOIUrl":null,"url":null,"abstract":"<div><p>There is limited information available regarding metabolic rates (MR) in many species or life stages of turtles. I measured MR (as O<sub>2</sub> consumption) in fasted hatchling snapping turtles (<em>Chelydra serpentina</em>) at 5–25 °C. The relationships between temperature and MR (per capita and per gram wet body mass) were exponential and linearized by Log<sub>10</sub> transformations. The relative change in MR over a 10 °C range (Q<sub>10</sub>) varied with the ranges of temperatures compared and ranged from Q<sub>10, 15 to 5</sub> = 3.6 to Q<sub>10, 25 to 15</sub> = 9.6 to 9.9, for per capita and per gram values, respectively. The high Q<sub>10</sub> values observed here demonstrate reductions in metabolic activity with declining temperatures that typically exceeded predicted values. Such a strong thermal dependence of MR suggests a rapid response to seasonal changes, facilitating energy conservation during cooling periods and growth during warmer periods in this temperate reptile.</p></div>","PeriodicalId":55564,"journal":{"name":"Acta Oecologica-International Journal of Ecology","volume":"124 ","pages":"Article 104007"},"PeriodicalIF":1.3000,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Oecologica-International Journal of Ecology","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1146609X24000298","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ECOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
There is limited information available regarding metabolic rates (MR) in many species or life stages of turtles. I measured MR (as O2 consumption) in fasted hatchling snapping turtles (Chelydra serpentina) at 5–25 °C. The relationships between temperature and MR (per capita and per gram wet body mass) were exponential and linearized by Log10 transformations. The relative change in MR over a 10 °C range (Q10) varied with the ranges of temperatures compared and ranged from Q10, 15 to 5 = 3.6 to Q10, 25 to 15 = 9.6 to 9.9, for per capita and per gram values, respectively. The high Q10 values observed here demonstrate reductions in metabolic activity with declining temperatures that typically exceeded predicted values. Such a strong thermal dependence of MR suggests a rapid response to seasonal changes, facilitating energy conservation during cooling periods and growth during warmer periods in this temperate reptile.
期刊介绍:
Acta Oecologica is venue for the publication of original research articles in ecology. We encourage studies in all areas of ecology, including ecosystem ecology, community ecology, population ecology, conservation ecology and evolutionary ecology. There is no bias with respect to taxon, biome or geographic area. Both theoretical and empirical papers are welcome, but combinations are particularly sought. Priority is given to papers based on explicitly stated hypotheses. Acta Oecologica also accepts review papers.