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

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Title
Patterns of mother-embryo isotope fractionation in batoids vary within and between species
Author(s)
Raoult, Vincent; Gaston, Troy F.; Smith, Catrina; Dolfo, Violaine; Park, Joo Myun; Williamson, Jane E.
Alternative Author(s)
박주면
Publication Year
2022
Abstract
Patterns of mother-embryo fractionation of C-13 and N-15 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 parts per thousand for delta C-13 and 4 parts per thousand for delta N-15, equivalent to a difference in trophic level. In one species (Urolophus paucimaculatus) litters could be significantly enriched or depleted in C-13 and N-15 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.
ISSN
0022-1112
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/42427
DOI
10.1111/jfb.15034
Bibliographic Citation
JOURNAL OF FISH BIOLOGY, 2022
Publisher
WILEY
Keywords
batoids; fractionation; histotrophy; isotopes; maternal; provisioning
Type
Article
Language
English
Document Type
Article; Early Access
Publisher
WILEY
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