American eels produce and release bile acid profiles that vary across life stage

The American eel (Anguilla rostrata) is an imperilled fish hypothesized to use conspecific cues, in part, to coordinate long‐distance migration during their multistage life history. Here, holding water and tissue from multiple American eel life stages was collected and analysed for the presence, pro...

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Bibliographic Details
Published in:Journal of fish biology 2020-04, Vol.96 (4), p.1024-1033
Main Authors: Schmucker, Andrew K., Johnson, Nicholas Scott, Bussy, Ugo, Li, Ke, Galbraith, Heather S., Chung‐Davidson, Yu‐Wen, Li, Weiming
Format: Article
Language:English
Subjects:
Acids
Anguilla rostrata
Bile
bile acid
Bile acids
Catadromous fishes
chemical cue
Cholic acid
conspecific washing
Deoxycholic acid
Developmental stages
Eels
Elvers
Fish
Freshwater fishes
Gall bladder
Gallbladder
Intestine
Intestines
Life history
Liquid chromatography
Marine fishes
Mass spectrometry
Mass spectroscopy
Migrations
Principal components analysis
profile
Profiles
Taurocholic acid
Taurodeoxycholic acid
Tissue
Tissues
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Summary:The American eel (Anguilla rostrata) is an imperilled fish hypothesized to use conspecific cues, in part, to coordinate long‐distance migration during their multistage life history. Here, holding water and tissue from multiple American eel life stages was collected and analysed for the presence, profile and concentration of bile acids. Distinct bile acid profiles were identified in glass, elver, yellow eel and silver eel holding waters using ultraperformance liquid chromatography high‐resolution mass spectrometry and principal component analysis. Taurochenodeoxycholic acid, taurodeoxycholic acid, cholic acid, deoxycholic acid, taurolithocholic acid and taurocholic acid were detected in whole tissue of American glass eels and elvers, and in liver, intestine and gallbladder samples of late‐stage yellow eels. Bile acids were not a major component of silver eel washings or tissue. This study is novel because little was previously known about bile acids produced and emitted into the environment by American eels. Future behavioural studies could evaluate whether any bile acids produced by American eels influence conspecific migratory behaviour.
ISSN:0022-1112
1095-8649
DOI:10.1111/jfb.14295