Diary of a bluegill (Lepomis macrochirus): daily δ13C and δ18O records in otoliths by ion microprobe

Otoliths provide information about an individual fish's environment at ecologically relevant time scales. We used ion microprobe analysis to produce high-resolution δ 13 C and δ 18 O time series from two age-4 bluegill (Lepomis macrochirus) otoliths, which provided insight into fish behavior an...

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Bibliographic Details
Published in:Canadian journal of fisheries and aquatic sciences 2007-12, Vol.64 (12), p.1641-1645
Main Authors: Weidel, Brian C, Ushikubo, Takayuki, Carpenter, Stephen R, Kita, Noriko T, Cole, Jonathan J, Kitchell, James F, Pace, Michael L, Valley, John W
Format: Article
Language:eng ; jpn
Subjects:
Agnatha. Pisces
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Autoecology
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
General aspects. Techniques
Methods and techniques (sampling, tagging, trapping, modelling...)
Vertebrata
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Summary:Otoliths provide information about an individual fish's environment at ecologically relevant time scales. We used ion microprobe analysis to produce high-resolution δ 13 C and δ 18 O time series from two age-4 bluegill (Lepomis macrochirus) otoliths, which provided insight into fish behavior and otolith fractionation processes. Scanning electron microscope images revealed δ 13 C and δ 18 O pit diameters of 10 and 15 µm, respectively, corresponding to 1-5 and 2-9 daily increments during rapid otolith growth and 6-9 and 12-25 increments near annual otolith growth checks. Spot-to-spot reproducibility (1 SD) of the calcite standards was
ISSN:0706-652X
1205-7533
DOI:10.1139/f07-157