https://scholars.lib.ntu.edu.tw/handle/123456789/571887
標題: | Metabolic proxy for cephalopods: Stable carbon isotope values recorded in different biogenic carbonates | 作者: | Chung M.-T Chen C.-Y Shiao J.-C Shirai K JEN-CHIEH SHIAO MING-TSUNG CHUNG |
關鍵字: | cuttlebone; cuttlefish; field metabolic rate; squid; statolith; thermal sensitivity | 公開日期: | 2021 | 來源出版物: | Methods in Ecology and Evolution | 摘要: | Measuring the metabolic rate of marine animals in their natural environment is challenging, impeding our understanding of their physiological ecology. Recently, a novel metabolic proxy, namely the δ13C values of biogenic carbonates (otoliths), was experimentally validated in teleost fishes. Cephalopods possess several types of biogenic carbonates, such as statolith, cuttlebone and other internal and external shells, which are all potential metabolic recorders, but few have been evaluated. To test the feasibility of the δ13C metabolic proxy in cephalopods, we conducted a temperature-controlled experiment with the pharaoh cuttlefish Sepia pharaonis to assess whether the proportion of metabolically derived carbon (Cresp) incorporated into statoliths and cuttlebones increases with metabolism in a warm environment. Moreover, we conducted multiple-species analysis using the published δ13C values of various biogenic carbonates to evaluate the consistency of the proxy among cephalopod species and between cephalopods and teleost fishes. In the temperature-controlled laboratory experiment, Cresp values calculated from statoliths and cuttlebones increased with an increase in environmental temperature. Cresp values did not differ between statoliths and cuttlebones. Moreover, the Cresp values of cephalopod biogenic carbonates had a similar range to those of fish otoliths and were correlated with metabolism-related factors, such as ambient temperature, body mass, ontogeny and functional behaviours, strengthening the feasibility of their use. The δ13C metabolic proxy reflects the total energy use in the natural environment, and it can be transformed into the oxygen consumption rate for a broader comparison with other species and for further evaluation with current theories related to metabolic ecology. However, experimental validation is highly recommended because the relationship between the oxygen consumption rate and Cresp values derived from biogenic carbonates of cephalopods might be structure- and species-specific. Our study revealed that the newly developed metabolic proxy provides a valuable alternative approach to study ecophysiology in cephalopods, and further development might broaden its applicability. ?. ? 2021 The Authors. Methods in Ecology and Evolution published by John Wiley & Sons Ltd on behalf of British Ecological Society |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85106712850&doi=10.1111%2f2041-210X.13630&partnerID=40&md5=83eb2f17a38eb6f7c97a3197f97768b7 https://scholars.lib.ntu.edu.tw/handle/123456789/571887 |
ISSN: | 2041210X | DOI: | 10.1111/2041-210X.13630 |
顯示於: | 海洋研究所 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。