Analysis of growth zones and microstructure in otoliths of two macrourids from the North Pacific abyss

The microstructure of the sagittae of Coryphaenoides armatus variabilis and C. yaquinae from the North Pacific abyss was studied in thin sections with light microscopy. Growth increments fitting the general description of daily growth increments known from sagittae of shallow-living fishes (e.g., ha...

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Bibliographic Details
Published in:Environmental biology of fishes 1988-04, Vol.21 (4), p.251-261
Main Author: WILSON, R. R.JR
Format: Article
Language:English
Subjects:
Biological and medical sciences
Coryphaenoides yaquinae
Ear and associated structures. Auditory pathways and centers. Hearing. Vocal organ. Phonation. Sound production. Echolocation
Fundamental and applied biological sciences. Psychology
Macrouridae
Marine
Pisces
Vertebrates: nervous system and sense organs
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Summary:The microstructure of the sagittae of Coryphaenoides armatus variabilis and C. yaquinae from the North Pacific abyss was studied in thin sections with light microscopy. Growth increments fitting the general description of daily growth increments known from sagittae of shallow-living fishes (e.g., hake) were observed and numerically related to large-scale ring patterns. These larger-scale patterns included rings which appeared to be annual (i.e., tertiary rings) and those of an unknown periodicity (i.e., secondary rings). The ratio of the number of increments to tertiary rings ranged between 181:1 and 406:1 in C. a. variabilis . These values essentially agree with observed ratios between increments and yearly annuli of hake sagittae. It is suggested that large abyssal macrourids may be relatively young and thus have extraordinarily rapid rates of growth.
ISSN:0378-1909
1573-5133
DOI:10.1007/BF00000374