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Environmental Biology of Fishes

, Volume 77, Issue 3–4, pp 327–336 | Cite as

Bomb dating and age validation using the spines of spiny dogfish (Squalus acanthias)

  • Steven E. CampanaEmail author
  • Cynthia Jones
  • Gordon A. McFarlane
  • Sigmund Myklevoll
ORIGINAL PAPER

Abstract

Bomb radiocarbon has previously been used to validate the age of large pelagic sharks based on incorporation into vertebrae. However, not all sharks produce interpretable vertebral growth bands. Here we report the first application of bomb radiocarbon as an age validation method based on date-specific incorporation into spine enamel. Our results indicate that the dorsal spines of spiny dogfish, Squalus acanthias, recorded and preserved a bomb radiocarbon pulse in growth bands formed during the 1960s with a timing which was very similar to that of marine carbonates. Using radiocarbon assays of spine growth bands known to have formed in the 1960s and 1970s as a dated marker, we confirm the validity of spine enamel growth band counts as accurate annual age indicators to an age of at least 45 year. Radiocarbon incorporation into northeast Atlantic dogfish spines occurred in similar years as those in the northwest Atlantic and northeast Pacific, although the amount of radiocarbon differed in keeping with the radiocarbon content of the different water masses. Published reports suggesting that Pacific dogfish are longer lived and slower growing than their Atlantic counterparts appear to be correct, and are not due to errors in interpreting the spine growth bands. Radiocarbon assays of fin spine enamel appears to be well suited to the age validation of sharks with fin spines which inhabit the upper 200 m of the ocean.

Keywords

Age determination Shark Longevity Growth rate 

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Notes

Acknowledgements

We thank W. Joyce and L. Marks for expert technical assistance. Two anonymous referees provided helpful comments on the manuscript.

References

  1. Alonso MK, Crespo EA, Garcia NA, Pedraza SN, Mariotti PA, Mora NJ (2002) Fishery and ontogenetic driven changes in the diet of the spiny dogfish, Squalus acanthias, in Patagonian waters, Argentina. Environ Biol Fishes 63:193–202CrossRefGoogle Scholar
  2. Beamish RJ, McFarlane GA (1985) Annulus development on the second dorsal spine of the spiny dogfish (Squalus acanthias) and its validity for age determination. Can J Fish Aquat Sci 42:1799–1805CrossRefGoogle Scholar
  3. Campana SE (1997) Use of radiocarbon from nuclear fallout as a dated marker in the otoliths of haddock, Melanogrammus aeglefinus. Mar Ecol Prog Series 150:49–56Google Scholar
  4. Campana SE (1999) Chemistry and composition of fish otoliths: pathways, mechanisms and applications. Mar Ecol Prog Series 188:263–297Google Scholar
  5. Campana SE (2001) Accuracy, precision and quality control in age determination, including a review of the use and abuse of age validation methods. J Fish Biol 59:197–242CrossRefGoogle Scholar
  6. Campana SE, Jones CM (1998) Radiocarbon from nuclear testing applied to age validation of black drum, Pogonias cromis. US Fishery Bull 96:185–192Google Scholar
  7. Campana SE, Natanson LJ, Myklevoll S (2002) Bomb dating and age determination of large pelagic sharks. Can J Fish Aquat Sci 59:450–455CrossRefGoogle Scholar
  8. Campana SE, Thorrold SR (2001) Otoliths, increments and elements: keys to a comprehensive understanding of fish populations? Can J Fish Aquat Sci 58:30–38CrossRefGoogle Scholar
  9. Cortés E (2000) Life history patterns and correlations in sharks. Rev Fish Sci 8:299–344Google Scholar
  10. Druffel EM (1989) Decadal time scale variability of ventilation in the North Atlantic: high-precision measurements of bomb radiocarbon in banded corals. J Geophys Res 94:3271–3285Google Scholar
  11. Druffel EM, Linick TW (1978) Radiocarbon in annual coral rings of Florida. Geophys Res Lett 5:913–916Google Scholar
  12. Fry B (1988) Food web structure on Georges Bank from stable C, N and S isotopic compositions. Limnol Oceanogr 33:1182–1190CrossRefGoogle Scholar
  13. Holden MJ, Meadows PS (1962) The structure of the spine of the spur dogfish (Squalus acanthias) and its use for age determination. J Mar Biol Assoc UK 42:179–197CrossRefGoogle Scholar
  14. Jones BC, Geen GH (1977) Food and feeding of spiny dogfish (Squalus acanthias) in British Columbia waters. J Fish Res Board Canada 34:2067–2078Google Scholar
  15. Kalish JM (1993) Pre- and post-bomb radiocarbon in fish otoliths. Earth Planet Sci Lett 114:549–554CrossRefGoogle Scholar
  16. Kerr LA, Andrews AH, Frantz BR, Coale KH, Brown TA, Cailliet GM (2004) Radiocarbon in otoliths of yelloweye rockfish (Sebastes ruberrimus): a reference time series for the coastal waters of southeast Alaska. Can J Fish Aquat Sci 61:443–451CrossRefGoogle Scholar
  17. Ketchen KS (1975) Age and growth of dogfish Squalus acanthias in British Columbia waters. J Fish Res Board Canada 32:43–59Google Scholar
  18. McFarlane GA, Beamish RJ (1987) Validation of the dorsal spine method of age determination for spiny dogfish. In: Summerfelt RC, Hall GE (eds) Age and growth of fish. Iowa State University Press, Ames, Iowa, pp 287–300Google Scholar
  19. Nammack MF, Musick JA, Colvocoresses JA (1985) Life history of spiny dogfish off the northeastern United States. Transac Am Fish Soc 114:367–376CrossRefGoogle Scholar
  20. Piner KR, Wischniowski SG (2004) Pacific halibut chronology of bomb radiocarbon in otoliths from 1944 to 1981 and a validation of ageing methods. J Fish Biol 64:1060–1071CrossRefGoogle Scholar
  21. Saunders MW, McFarlane GA (1993) Age and length at maturity of the female spiny dogfish, Squalus acanthias, in the Strait of Georgia, British Columbia, Canada. Environ Biol Fish 38:49–57CrossRefGoogle Scholar
  22. Schwarcz HP, Gao Y, Campana S, Browne D, Knyf M, Brand U (1998) Stable carbon isotope variations in otoliths of Atlantic cod (Gadus morhua). Can J Fish Aquat Sci 55:1798–1806CrossRefGoogle Scholar
  23. Smith SE, Au DW, Show C (1998) Intrinsic rebound potentials of 26 species of Pacific sharks. Mar Freshwater Res 49:663–678CrossRefGoogle Scholar
  24. Stuiver M, Polach HA (1977) Reporting of C-14 data. Radiocarbon 19:355–363Google Scholar
  25. Weidman CR, Jones GA (1993) A shell-derived time history of bomb C-14 on Georges Bank and its Labrador Sea implications. J Geophys Res 98:14577–14588CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media B.V. 2006

Authors and Affiliations

  • Steven E. Campana
    • 1
    Email author
  • Cynthia Jones
    • 2
  • Gordon A. McFarlane
    • 3
  • Sigmund Myklevoll
    • 4
  1. 1.Bedford Institute of OceanographyDartmouthCanada
  2. 2.Center for Quantitative Fisheries EcologyOld Dominion UniversityNorfolkUSA
  3. 3.Pacific Biological StationNanaimoCanada
  4. 4.Institute of Marine ResearchBergenNorway

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