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I now have e-mail files available of charts showing Rockfish ages of a
population off of Alaska. 16% of the randomly sampled population from
commercial landings was 50 years of age and older, with the oldest being
107 years old. The first chart is a histogram showing class frequency and
age, and the second a scattergram, plotting length and age. My interest is
applying gerontological research to long-lived fish.
If you are interested, send me an e-mail to request the charts.
Also, I had asked for references to otolith verification; attached are
the responses.
Sincerely, John C. Guerin
<<ATTACHED ARE COMPILED OTOLITH RESPONSES>>
May 21, 1997
Compilation of responses to request for otolith age verification:
>Applied radiometric analyses:
>
>Fenton, GE, and SA Short. 1995. Radiometric analysis of blue grenadier,
>Macruronus novaezelandiae, otolith cores. Fish Bull. 93:391-396
>
>Campana, SE, KCT Zwanenburg, and JN Smith. 1990. 210Pb/226Ra Determination
>of Longevity in Redfish. Can.J.Fish.Aquat.Sci. Vol47
>
>Beamish,RJ, and DE Chilton. 1982. Preliminary evaluation of a method to
>determine the age of sablefish (Anoplopoma fimbria). Can J Fish Aquat. Sci.
>39:277-287
>
>Kalish, John M. 1995. Application of the bomb radiocarbon chronometer to the
>validation of redfish Centroberyx affinis age. Can J Fish Aquat Sci
>52:1399-1405
>
>General radiometric:
>
>Heyraud, ?M, and RD Cherry. 1979. Polonium-210 and Lead-210 in Marine Food
>Chains. Marine Biology. 52: 227-236
>
>(I believe this following paper describes the technique applied on the
>sample of yelloweye rockfish supplied by Tory, and also aged at this lab
>using traditional techniques)
>
>Chabaux, F. DB Othman, JL Birck. 1994. A new Ra-Ba chromatographic
>separation and its application to Ra mass-spectrometric measurement in
>volcanic rocks. Chemical Geology 114, 191-197
>
>General otolith:
>
>Williams, T. and BC Bedford. 1974. The use of otoliths for age
>determination. [in The Ageing of Fish. edited by TB Bagenal. Unwin Bros Ltd]
> (there are probably several other papers in here of interest to you)
>
>Kris Munk
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Try "Age determination methods for fishes studied by the groundfish program
>at the Pacific Biological Station" by D.E. Chilton and R.J. Beamish (1982) -
>Canadian Special Publication of Fisheries and Aquatic Sciences 60: 120p. -
>Department of Fisheries and Oceans. It is quite comprehensive and helpful
>with info on ageing using annuli on scales, otoliths, fin-rays, and
>spines...specifically, it has sections and photographs for ageing a variety
>of Scorpaenidae. Also, it may be worth your while to contact people at PBS
>because they have been involved in rockfish ageing for quite some
>time...last I heard, they had aged a 140 year old rockfish!!
>
>Also, for a quick look at precision and accuracy in ageing, check out
>"Effects of year-class strength on age determination" Kimura et. al. Aust.
>J. Mar. Freshwater Res. (1992) 43:1221-8.
>
>Hope this helps...I would love to see what else you come up with as I am
>working on an ageing paper. Please feel free to email me directly and I
>look forward to your compilation of replies. Good luck.
>
>Cheers
>Jacqueline O'Connell
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Gifford, V.M. and M.K. Crawford. 1988. Redfish, Sebastes fasciatus. In: Age
>Determination Methods for Northwest Atlantic Species, Ch. 14. Jenttila, J.
>and L.M. Dery, eds. NOAA Technical Report NMFS 72: 93-96.
>
>
>The report is available through NMFS, and I wouldn't be surprised if they
>have a similar one for Pacific species.
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>Campana and Neilson 1985. Microstructure of fish otoliths. Can. J. Fish. Aquat. Sci. 42:1014-1032
>
>Dabrowski and Tsukamoto. 1986. Tetracycline tagging in coregonid embryos and larvae. J. Fish Biol. 29:691-698
>
>Gleason and Recksiek. 1990. Preliminary field verification of daily growth increments in the lapillar otoliths of juvenile cunners. Am. Fish. Soc. Symp.
>7:562-565.
>
>Hettler 1984. Marking otoliths by immersion of marine fish larvae in tetracycline. T. Am. Fish. Soc. 113:370-373
>
>Tsukamoto, 1985. Mass-marking of ayu eggs and larvae by tetracycline-tagging of otoliths. Bull. Jap. Soc. Sci. Fish. 51:903-911.
>
>Wild and Foreman 1980. The relationship between otolith increments and time for yellowfin and skipjack tuna marked with tetracycline. Inter Amer.
>Trop. Tuna. Comm. Bull. 17:509-541.
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>Here are a few papers dealing with validation of longevity in marine fish
>based on radioisotopes in otoliths. The precision of many of the age
>estimates derived from these papers is not good, but they serve to confirm
>longevity. Errors can be particularly large when radiometric methods are
>employed, but the application of the bomb radiocarbon pulse offers
>considerable improvement in precision. A drawback is that it cannot be
>used to determine the age of fish with ages greater than about 47 years at
>the present time, although the ability to age older fish with the method
>will become greater the further we move from the 1960s. Nevertheless, bomb
>radiocarbon can be used to validate the methods used to estimate the age of
>longevity fish, typically the counting of opaque and translucent zones on
>otoliths. Other papers dealing with age validation based on these methods
>are "in press" by a range of authors. In addition, there are papers
>dealing with more traditional mark and recapture methods of age validation.
> These depend on the injection of a calciphilic fluorochrome, typically
>oxytetracycline hydrochloride (OTC), into the animal before it is released.
> See papers on Anoplopoma fimbria (sablefish) by Beamish and McFarlane that
>deal with OTC. Note that in the world of fish age estimation, the term
>"validation" is used to identify a procedure that determines the relative
>accuracy of a method of age estimation (typically counting zones on
>otoliths).
>
>Bennett JT, Boehlert GW, Turekian K.K (1982) Confirmation of the longevity
>in Sebastes diploproa (Pisces: Scorpaenidae) from 210Pb:226Ra measurements
>in otoliths. Mar. Biol. 71: 209-215.
>
>Campana SE, Zwanenburg KCT, Smith JN (1990) 210Pb/226Ra determination of
>longevity in redfish. Can. J. Fish. Aquat. Sci. 47: 163-165
>5659
>
>Fenton, G.E. and S.A. Short. 1992. Fish age validation by radiometric
>analysis of otoliths. Aust. J. Mar. Freshwater Res. 43: 913-922.
>
>Fenton GE, Short SA (1995) Radiometric analysis of blue grenadier
>Macruronus novaezelandiae otolith cores. Fish. Bull., U.S. 93:391-396
>
>Fenton GE, Short SA, Ritz DA (1991) Age determination of orange roughy,
>Hoplostethus atlianticus (Pisces: Trachichthyidae) using 210Pb:226Ra
>disequilibria. Mar. Biol. 109: 197-202
>
>Kalish JM (1993) Pre- and post-bomb radiocarbon in fish otoliths. Earth
>Planet. Sci. Lett. 114: 549-554
>
>Kalish JM (1995a) Radiocarbon and fish biology. In: Secor DH, Dean JM,
>Campana SE (eds) Recent Developments in Fish Otolith Research.. University
>of South Carolina Press, Columbia, South Carolina, p. 637-653
>
>Kalish JM (1995b) Application of the bomb radiocarbon chronometer to the
>validation of redfish Centroberyx affinis age. Can. J. Fish. Aquat. Sci.
>52:1399-1405
>
>Kalish JM, Johnston JM, Gunn JF, Clear N (1996) Use of the bomb radiocarbon
>chronometer to determine the age of southern bluefin tuna (Thunnus
>maccoyii). Mar Ecol Prog Ser 143: 1-8.
>
>Cheers
>John
>John M. Kalish
>Division of Botany and Zoology
>Australian National University
>Canberra, ACT 0200
>Australia
>
>Email: [log in to unmask]
>Tel: 61-6-249-3119
>Fax: 61-6-249-5573
>WWW http://online.anu.edu.au/BoZo
>http://www.anu.edu.au/EES_BOZO/
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>Well, for starters, "Recent Developments in Fish Otolith Research"
>1995, edited by Secor, Dean and Campana, University of South
>Carolina Press, would be a great place to start.
>Also, if you have done any literature investigation of your own, you
>should already know the paper, Leaman and Nagtegaal, 1987. Age
>validation and revised natural mortality rate for yellowtail rockfish.
>TAFS 116:171-175.
>Good luck,
>*********************************************************
>Thomas R. Reinert, Research Coordinator I
>Georgia Cooperative Fish & Wildlife Research Unit
>D.B. Warnell School of Forest Resources
>University of Georgia
>Athens, Georgia 30602-2152
>Phone: 706-542-1124 FAX: 706-542-8356
>Email: [log in to unmask]
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