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Marine Biology

, Volume 123, Issue 1, pp 19–27 | Cite as

Morphometric and meristic comparison of orange roughy (Hoplostethus atlanticus: Trachichthyidae) from the Puysegur Bank and Lord Howe Rise, New Zealand, and its implications for stock structure

  • M. Haddon
  • T. J. Willis
Article

Abstract

Significant morphological differences were found between orange roughy, Hoplostethus atlanticus, caught in 1993 on the Puysegur Bank and those caught on the Lord Howe Rise, New Zealand. A total of 17 separate body measurements and counts were taken from each fish. Treating the sexes separately, significant differences were found between sites when linear relations between eight particular body measures and standard length were compared. The eight measures indicating differences in shape were head length, snout length, orbit diameter, maxilla width, premaxilla length, caudal peduncle, gill raker count, and anal fin count. Discriminant functions were used to compare sites and sexes, and these permitted a >90% success rate in distinguishing fish from the two sites. A discriminant function could not be found which successfully separated two separate tows made on the Puysegur Bank, indicating that phenotypic differences do not vary as much within a site as they do between sites. All analyses made suggested that fish from the two different areas had different body shapes. Morphological differences, such as those found in the current investigation, could only arise if the fish populations from the two areas were relatively discrete. There may be some movement of fish between areas, quite possibly enough to bring about relative genetic homogeneity, but clearly there is insufficient to prevent the two populations from differing phenotypically. These differences suggest that morphometric analysis may be a useful tool for distinguishing New Zealand orange roughy stocks.

Keywords

Standard Length Discriminant Function Morphological Difference Body Shape Head Length 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Baker CS, MacCarthy M, Smith PJ, Perry AP, Chambers GK (1992) DNA fingerprints of orange roughy, Hoplostethus atlanticus: a population comparison. Mar Biol 113:561–567Google Scholar
  2. Blackith RE, Reyment RA (1971) Multivariate morphometrics. Academic Press, LondonGoogle Scholar
  3. Bookstein F, Chernoff B, Elder R, Humphries J, Smith G, Strauss R (1985) Morphometrics in evolutionary biology. Spec Publs Acad nat Sci Philad 15:1–277Google Scholar
  4. Clark MR (1990) A review of stock structure of orange roughy (Hoplostethus atlanticus) in the New Zealand EEZ and Tasman Sea. New Zealand Ministry of Agriculture and Fisheries, Fisheries Greta Point, Wellington (Internal Rep No. 144)Google Scholar
  5. Clark MR (1993) Orange roughy fisheries in international waters of the Lord Howe Rise: a summary of available commercial and research data. New Zealand Ministry of Agriculture and Fisheries, Fisheries Greta Point, Wellington (Internal Rep No. 217)Google Scholar
  6. Clark MR, Tracey RA (1992) Trawl survey of orange roughy in southern New Zealand waters, June–July 1991. Tech Rep NZ Fish 32:1–27Google Scholar
  7. Clark MR, Tracey RA (1993) Orange roughy off the southeast coast of the South Island and Puysegur Bank: exploratory and research fishing, June–August 1992. Tech Rep NZ Fish 35:1–53Google Scholar
  8. Edmonds JS, Caputi N, Morita M (1991) Stock discrimination by trace-element analysis of otoliths of orange roughy (Hoplostethus atlanticus), a deep-water marine teleost. Aust J mar Freshwat Res 42:383–389Google Scholar
  9. Elliott NG, Ward RD (1992) Enzyme variation in orange roughy, Hoplostethus atlanticus (Teleostei: Trachichthyidae) from southern Australian and New Zealand waters. Aust J mar Freshwat Res 43:1561–1571Google Scholar
  10. Fenton GE, Short SA, Ritz DA (1991) Age determination of orange roughy, Hoplostethus atlanticus (Pisces: Trachichthyidae) using 210Pb:226Ra disequilibria. Mar Biol 109:197–202Google Scholar
  11. Francis RICC, Mattlin RH (1986) A possible pitfall in the morphometric application of discriminant analysis: measurement bias. Mar Biol 93:311–313Google Scholar
  12. Lester RJG, Sewell KB, Barnes A, Evans K (1988) Stock discrimination of orange roughy, Hoplostethus atlanticus, by parasite analysis. Mar Biol 99:137–143Google Scholar
  13. Linkowski TB, Liwoch M (1986) Variations in morphology of orange roughy Hoplostethus atlanticus (Trachichthyidae) otoliths from New Zealand waters. Pr morsk Inst ryb Gdyni 21:43–59Google Scholar
  14. Ovenden JR, Smolenski AJ, White WG (1989) Mitochondrial DNA restriction site variation in Tasmanian populations of orange roughy (Hoplostethus atlanticus) a deep-water marine teleost. Aust J mar Freshwat Res 40:1–9Google Scholar
  15. Pankhurst NW (1988) Spawning dynamics of orange roughy, Hoplostethus atlanticus, in mid-slope waters of New Zealand. Envir Biol Fish 21:101–116Google Scholar
  16. Smith PJ (1986) Genetic similarity between samples of orange roughy Hoplostethus atlanticus from the Tasman Sea, Southwest Pacific Ocean and North-east Atlantic Ocean. Mar Biol 91: 173–180Google Scholar
  17. Smith PJ, Jamieson A, Birley AJ (1990) Electrophoretic studies and the stock concept in marine teleosts. J Cons int Explor Mer 47: 231–245Google Scholar
  18. Snedecor GW, Cochran WG (1967) Statistical methods. 6th ed. Iowa State University Press, Ames, IowaGoogle Scholar
  19. Smolenski AJ, Ovenden JR, White RGW (1993) Evidence of stock separation in southern hemisphere orange roughy (Hoplostethus atlanticus, Trachichthyidae) from restriction enzyme analysis of mitochondrial DNA. Mar Biol 116:219–230Google Scholar
  20. Wilkinson L (1990) SYSTAT: the system for statistics. SYSTAT, Inc., Evanston, IllinoisGoogle Scholar

Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • M. Haddon
    • 1
  • T. J. Willis
    • 1
  1. 1.Island Bay Marine LaboratoryVictoria University of WellingtonIsland BayNew Zealand

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