Age determination and validation studies of marine fishes

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Cailliet, G. M., Andrews, A. H., Burton, E. J., Watters, D. L., Kline, D. E., & Ferry-Graham, L. A. (2001). Age determination and validation studies of marine fishes: Do deep-dwellers live longer? Experimental Gerontology, 36(4), 739-764. doi:10.1016/S0531-5565(00)00239-4
Metadata
TitleAge determination and validation studies of marine fishes
AuthorsG. Cailliet, A. Andrews, E. Burton, D. Watters, D. Kline, L. Ferry-Graham
AbstractAge determination and validation studies on deep-water marine fishes indicate they are difficult to age and often long-lived. Techniques for the determination of age in individual fish includes growth-zone analysis of vertebral centra, fin rays and spines, other skeletal structures, and otoliths (there are three sets of otoliths in most bony fish semicircular canals, each of which is made of calcium carbonate). Most have regular increments deposited as the fish (and its semicircular canals) grows. The most commonly used otolith for age determination is the largest one called the sagitta. Age validation techniques include: (1) tag-recapture, often combined with oxytetracycline injection and analysis in growth-zones of bone upon recapture; (2) analysis of growth-zones over time; and (3) radiometric approaches utilizing a known radioactive decay series as an independent chronometer in otoliths from bony fishes. We briefly summarize previous studies using these three validation approaches and present results from several of our radiometric studies on deep-water, bony fishes recently subjected to expanding fisheries. Radiometric age validation results are presented for four species of scorpaenid fishes (the bank, Sebastes rufus, and bocaccio, S. paucispinis, rockfishes, and two thornyhead species, Sebastolobus altivelis and S. alascanus). In addition, our analysis of scorpaenids indicates that longevity increases exponentially with maximum depth of occurrence. The reason that the deep-water forms of scorpaenid fishes are long-lived is uncertain. Their longevity, however, may be related to altered physiological processes relative to environmental parameters like low temperature, high pressures, low light levels, low oxygen, and poor food resources. Copyright © 2001 Elsevier Science Inc.
JournalExperimental Gerontology
Date2001
Volume36
Issue4-6
Start page739
End page764
ISSN0531-5565
Subjectsaging, animal experiment, caloric intake, caloric restriction, conference paper, controlled study, growth rate, life expectancy, lifespan, longevity, maturity, model, mortality, nonhuman, population dynamics, priority journal, reproduction, species, trout, Age Factors, Animals, Ecosystem, Fishes, Radiometry, Osteichthyes, Pisces, Sagitta, Scorpaenidae, Sebastes paucispinis, Sebastes rufus, Sebastolobus alascanus, Sebastolobus altivelis
NoteCited By (since 1996):102, Fish and Fisheries, CODEN: EXGEA

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