IR Home
MEPS
Home
Editors
Forthcoming
Information
Subscribe
Journals
Home
MEPS
AME
CR
DAO
ESEP
Search
Subscribe
Book Series
EE Books
Top Books
ESEP Books
Order
EEIU Brochures
(pdf format)
Discussion Forums
Home
Research
Endangered Species Programs
Institutions
International Ecology Institute
Eco-Ethics International Union
Foundation
Otto Kinne Foundation
 | |
MEPS 262:293-298 (2003)
|
Abstract
|
Increment patterns in otoliths and scales from mature Atlantic salmon Salmo salar
Brian K. Wells1,2,*, Kevin D. Friedland1, Lora M. Clarke1
1UMass/NOAA/CMER Program, Blaisdell House, University of Massachusetts, Amherst, Massachusetts 01002, USA
2Present address: NOAA/NMFS Santa Cruz Laboratory, Santa Cruz, California 95060, USA
*Email: brian.wells@noaa.gov
ABSTRACT: This is the first work to note a similarity in increment patterns between otoliths and scales up to maturation, helping to understand better the biological and physical mechanisms guiding otolith and scale growth and increment formation. We
demonstrate, with returning 1- and 2-sea winter Atlantic salmon Salmo salar, that transverse otolith thin sections to the core expose increments that represent seasonal growth during the marine phase. These increments are similar to those that form
on scales, albeit with greater increment-width variability. From cage-reared fish, we noted that the number of increments on otoliths and scales formed during the period of marine residence is the same, and that the average mean deposition-time is
slightly over 1 wk in the first year and ca. 2 wk in the second year.
KEY WORDS: Atlantic salmon · Otolith · Scale · Growth
Full text in pdf format
Published in MEPS Vol.
262
(2003) on November 7
Print ISSN: 0171-8630; Online ISSN: 1616-1599.
Copyright © Inter-Research, Oldendorf/Luhe, 2003
|
