Patterns of mother-embryo isotope fractionation in batoids vary within and between species.

Autor: Raoult V; School of Environmental and Life Sciences, University of Newcastle, Ourimbah, New South Wales, Australia.; School of Natural Sciences, Macquarie University, Sydney, New South Wales, Australia., Gaston TF; School of Environmental and Life Sciences, University of Newcastle, Ourimbah, New South Wales, Australia., Smith C; School of Natural Sciences, Macquarie University, Sydney, New South Wales, Australia., Dolfo V; School of Natural Sciences, Macquarie University, Sydney, New South Wales, Australia.; PSL Research University, EPHE-UPVD-CNRS, USR 3278 CRIOBE, Perpignan, France., Park JM; School of Natural Sciences, Macquarie University, Sydney, New South Wales, Australia.; Dokdo Research Center, East Sea Research Institute, Korea Institute of Ocean Science & Technology, Uljin, Korea., Williamson JE; School of Natural Sciences, Macquarie University, Sydney, New South Wales, Australia.
Jazyk: angličtina
Zdroj: Journal of fish biology [J Fish Biol] 2024 Nov; Vol. 105 (5), pp. 1368-1376. Date of Electronic Publication: 2022 Mar 29.
DOI: 10.1111/jfb.15034
Abstrakt: Patterns of mother-embryo fractionation of 13 C and 15 N were assessed for their predictability across three species of batoids caught as by-catch in south-eastern Australia. Stable isotope analysis of 24 mothers and their litters revealed that isotope ratios of embryos were significantly different from their corresponding mothers and that the scale and direction of the difference varied within and across species. The range of variation across species was 3.5‰ for δ 13 C and 4‰ for δ 15 N, equivalent to a difference in trophic level. In one species (Urolophus paucimaculatus) litters could be significantly enriched or depleted in 13 C and 15 N relative to their mothers' isotope signatures. These results suggest that patterns of mother-embryo isotope fractionation vary within and between species and that these patterns may not be explained only by developmental mode. Contrasting patterns of fractionation between and within species make it difficult to adjust mother-embryo fractionation with broad-scale correction factors.
(© 2022 The Authors. Journal of Fish Biology published by John Wiley & Sons Ltd on behalf of Fisheries Society of the British Isles.)
Databáze: MEDLINE
Externí odkaz: