Marine Biology

, Volume 112, Issue 2, pp 327–331 | Cite as

Minimal genetic variation among samples of six species of coral reef fishes collected at La Parguera, Puerto Rico, and Discovery Bay, Jamaica

  • J. M. Lacson


Intraspecific genetic variation among samples of six species of reef fishes,Chromis cyanea, Stegastes partitus, S. planifrons, S. leucostictus, S. dorsopunicans, andThalassoma bifasciatum collected over a 2 wk period in 1990 at La Parguera, Puerto Rico, USA and Discovery Bay, Jamaica, was evaluated using starch-gel electrophoresis. On average, products of 33 protein-coding loci were resolved in each species. Levels of polymorphism (0.95 criterion) ranged from 3.1% inS. dorsopunicans to 42.4% inC. cyanea. Estimates of genetic divergence among samples and indices of genetic subdivision were small in all six study species: mean genetic distances ranged from 0.000 to 0.002 and mean fixation indices ranged from 0.004 to 0.035. Estimates of numbers of migrants per generation (mNe) ranged from 5.1 to 11.6, indicating that substantial genetic exchange probably occurs over the relatively large geographic distance (ca. 1000 km) separating coral reef communities of La Parguera and Discovery Bay. The estimates ofmNe may be biased by a sampling strategy involving only two localities, and should therefore be interpreted with caution. With inferences based solely on allozyme frequency data under a primary assumption of neutrality, genetic substructuring of populations of the six study species on a macrogeographic scale appears virtually nonexistent.


Coral Reef Reef Fish Study Species Fixation Index Genetic Exchange 
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.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature cited

  1. Bell, L.J., Moyer, J.T., Numachi, K. (1982). Morphological and genetic variation in Japanese populations of the anemonefishAmphiprion clarkii. Mar. Biol. 72: 99–108Google Scholar
  2. De Boer, B.A. (1978). Factors affecting the distribution of the damselfishChromis cyanea (Poey), Pomacentridae, on a reef at Curaçao, Netherland Antilles. Bull. mar. Sci. 28: 550–565Google Scholar
  3. Fhrlich, P.R. (1975). The population biology of coral reef fishes. A. Rev. Ecol. Syst. 6: 211–247Google Scholar
  4. Fritzch, R.A. (1978). Development of fishes of the Mid-Atlantic Bight. Vol. 5. United States Department of the Interior, Washington, D.C.Google Scholar
  5. Hillis, D.M. (1984) Misuse and modification of Nei's genetic distance. Syst. Zool. 33: 238–240Google Scholar
  6. Laeson, J.M. (1990). Comparative analyses of genetic variation among Caribbean populations of six coral reef fishes. Ph. D. dissertation. University of Texas at AustinGoogle Scholar
  7. Lacson, J.M., Morizot, D.C. (1991). Temporal genetic variation in subpopulations of bicolor damselfish (Stegastes partitus) inhabiting coral reefs in the Florida Keys. Mar. Biol. 110: 353–357Google Scholar
  8. Levene, H. (1949). On a matching problem arising in genetics. Ann. math. Statist. 20: 91–94Google Scholar
  9. Nei, M. (1972). Genetic distance between populations. Am. Nat. 106: 283–292Google Scholar
  10. Nei, M. (1977).F-statistics and analysis of gene diversity in subdivided populations. Ann. hum. Genet. 41: 225–233Google Scholar
  11. Nomenclature Committee of the International Union of Biochemistry (1984). Enzyme nomenclature: recommendations of the Nomenclature Committee of the International Union of Biochemistry on the nomenclature and classification of enzyme-catalyzed reactions. Academic Press, San Diego, CaliforniaGoogle Scholar
  12. Robertson, D.R. (1973). Field observations on the reproductive behavior of a pomacentrid fish,Acanthochromis polyacanthus. Z. Tierpsychol. 32: 319–324Google Scholar
  13. Shaklee, J.B. (1984). Genetic variation and population structure in the damselfish,Stegastes fasciolatus, throughout the Hawaiian archipelago. Copeia 1984(3): 629–640Google Scholar
  14. Shaklee, J.B., Allendorf, F.W., Morizot, D.C., Whitt, G.S. (1989). Gene nomenclature for protein-coding loci in fish. Trans. Am. Fish. Soc. 119:2–15Google Scholar
  15. Siciliano, M.J., Shaw, C.R. (1976) Separation and visualization of enzymes in gels. In: Smith, I (ed.) Chromatographic and electrophoretic techniques. Halstead, New York p. 185–209Google Scholar
  16. Slatkin, M. (1985) Rare alleles as indicators of gene flow Evolution 39: 53–65Google Scholar
  17. Sokal, R.R., Rohlf, F.J. (1969). The principles and practice of statistics in biological research. W.H. Freeman & Co., San FranciscoGoogle Scholar
  18. Swofford, D.L., Selander, R.B. (1981). BIOSYS-1: a FORTRAN program for the comprehensive analysis of electrophoretic data in population genetics and systematics. J. Hered. 72: 281–283Google Scholar
  19. Thresher, R.E., Colin P.L., Bell, L.J. (1989). Planktonic duration, distribution, and population structure of western and central Pacific damselfishes (Pomacentridae). Copeia 1989 (2):420–434Google Scholar
  20. Vawter A.T., Rosenblatt, R., Gorman, G.C. (1980). Genetic divergence among fishes of the eastern Pacific and the Caribbean: support for the molecular clock. Evolution 34:705–711Google Scholar
  21. Victor, B.C. (1982). Daily otolith increment and recruitment in two coral-reef wrasses.Thalassoma bifasciatum andHalichoeres bivittatus. Mar. Biol. 71: 203–208Google Scholar
  22. Wright, S. (1978). Evolution and the genetics of populations. Vol 4. Variability within and among natural populations. University of Chicago Press, ChicagoGoogle Scholar

Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • J. M. Lacson
    • 1
  1. 1.University of Guam Marine LaboratoryMangilaoUSA

Personalised recommendations