Abstract
Dorsal-fin spines are becoming increasingly popular as a suitable structure for ageing some chondrichthyan fishes. However, the terminology used to describe dorsal-fin structure is often inconsistent between studies, and is consequently unclear. Standardised terms and definitions of the dorsal-fin spine structure are proposed, with particular focus on those areas that are used for age and growth studies.
Similar content being viewed by others
References
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 42:1799–1805
Clarke MW, Connolly PL, Bracken JJ (2002) Age estimation of the exploited deepwater shark Centrophorus squamosus from the continental slopes of the Rockall Trough and Porcupine Bank. J Fish Biol 60:501–514
Francis MP, ÓMaolagáin C (2000) Age and growth of ghost sharks. Final research report for Ministry of Fisheries Research Project GSH1999/01 Objective 1, 29 pp
Freer DWL, Griffiths CL (1993) Estimation of age and growth in the St Joseph Callorhinchus capensis (Dumeril). S Afr J Mar Sci 13:75–81
Guallart Furio J (1998) Contribution to the knowledge of the biology and taxonomy of the deepsea shark, Centrophorus granulosus (Bloch & Schneider, 1801) (Elasmobranchii, Squalidae) in the Balearic Sea (western Mediterranean). Ph.D. thesis (in Spanish), Univertat de Valencia, Valencia, 290 pp
Holden MJ, Meadows PS (1962) The structure of the spine of the Spur Dogfish (Squalus acanthias L.) and its use for age determination. J Mar Biol Assoc UK 42:179–197
Irvine SB, Stevens JD, Laurenson LJB (2006a) Surface bands on deepwater squalid spines: an alternative method of ageing Centroselachus crepidater. Can J Fish Aquat Sci 63:617–627
Irvine SB, Stevens JD, Laurenson LJB (2006b) Comparing external and internal dorsal-spine bands to interpret the age and growth of the giant lantern shark, Etmopterus baxteri (Squaliformes:Etmopteridae) Environ Biol Fishes
Kaganovskaia SM (1933) A method for determining the age and composition of the catches of Squalus acanthias. Bulletin Far-East Br Acad Sci USSR 1(3):5–6 (translated from Russian by W.E. Ricker). Fisheries Research Board of Canada, Translation Series No. 281, vol. 1, pp. 5–6
Ketchen KS (1975) Age and growth of dogfish (Squalus acanthias) in British Columbia waters. J Fish Res Board Can 32:43–59
Maisey JG (1979) Finspine morphogenesis in squalid and heterodontid sharks. Zool J Linn Soc 66:161–183
McFarlane GA, Beamish RJ (1987) Validation of the dorsal spine method of age determination for spiny dogfish. In: Summerfelt RC, Hall GE (eds) The age and growth of fish. The Iowa State University Press, Ames, pp 287–300
Sullivan KJ (1977) Age and growth of the elephant fish Callorhinchus milii (Elasmobranchii: Callorhynchidae). NZ J Mar Freshw Res 11:745–753
Tanaka S (1990) The structure of the dorsal spine of the deep sea squaloid shark Centrophorus acus and its utility for age determination. Nippon Suisan Gakkai Shi (Bull Jpn Soc Sci Fish) 56:903–909
Wilson CA, Brothers EB, Casselman JM, Lavette-Smith C, Wild A (1983) Glossary. In: Prince ED, Pulos LM (eds) Proceedings of international workshop on age determination of oceanic pelagic fishes: tuna billfishes and sharks. US Department of Commerce, NOAA Technical Report No. 8, pp 207–208
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Clarke, M.W., Irvine, S.B. Terminology for the ageing of chondrichthyan fish using dorsal-fin spines. Environ Biol Fish 77, 273–277 (2006). https://doi.org/10.1007/s10641-006-9131-3
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10641-006-9131-3