Conservation Genetics

, 8:1213 | Cite as

Genetic composition of the Jadro softmouth trout following translocation into a new habitat

  • Aleš SnojEmail author
  • Andrej Razpet
  • Tea Tomljanović
  • Tomislav Treer
  • Simona Sušnik
Short communication


Genetic founder effects of a historical translocation (1965; app. 12 generations ago) of endangered softmouth trout from the only remaining indigenous population to an adjacent uninhabited river were investigated.

A comparison of 15 microsatellites from contemporary samples in both the source and re-established populations indicated a very low level of genetic diversity within the two populations. Furthermore, considerable differences in estimates of variability and effective population sizes were detected between populations, but no recent bottlenecks were evident. Our data suggest that the re-established population has lost variation due to genetic drift associated with founder effects following the translocation. Accordingly, in relation to management, we suggest that the re-established population could serve as a secondary source of individuals to buffer possible extinction due to demographic events. Finally, conservation initiatives to enhance the census population size and increase levels of variability in the re-established population are proposed.


Translocation Genetic diversity Endangered population Microsatellites Conservation genetics 

Supplementary material

10592_2006_9262_MOESM1_ESM.pdf (52 kb)
ESM1 (PDF 52 KB)


  1. Bartley D, Bagley M, Gall G, Bentley B (1992) Use of linkage disequlibrium data to estimate effective size of hatchery and natural fish populations. Conserv Biol 6:365–375CrossRefGoogle Scholar
  2. Cornuet JM, Luikart G (1996) Description and power analysis of two tests for detecting recent population bottlenecks from allele frequency data. Genetics 144:2001–2014PubMedGoogle Scholar
  3. Frankham R, Ballou JD, Briscoe DA (2004) A primer of conservation genetics, 1st edn. University Press, CambridgeGoogle Scholar
  4. Fischer J, Lindenmayer DB (2000) An assessment of the published results of animal relocations. Biol Conserv 96:1–11CrossRefGoogle Scholar
  5. Garza JC, Williamson EG (2001) Detection of reduction in population size using data from microsatellite loci. Mol Ecol 10:305–318PubMedCrossRefGoogle Scholar
  6. Goudet J (2001) FSTAT, a program to estimate and test gene diversities and fixation indices (version 2.9.3).
  7. Hill WG (1981) Estimation of effective population size from data on linkage disequilibrium. Genet Res 38:209–216CrossRefGoogle Scholar
  8. Jug T, Berrebi P, Snoj A (2005) Distribution of non-native trout in Slovenia and their introgression with native trout populations as observed through microsatellite DNA analysis. Biol Conserv 123:381–388CrossRefGoogle Scholar
  9. Lerceteau-Köhler E, Weiss S (2006) Development of multiplex PCR micrasatellite assay in brown trout Salmo trutta, and its potential application for the genus. Aquaculture 258:641–645CrossRefGoogle Scholar
  10. Mock KE, Latch EK, Rhodes Jr. OE (2004) Assessing losses of genetic diversity due to translocation: long-term case histories in Merriam’s turkey (Meleagris gallopavo merriami). Conserv Genet 5:631–645CrossRefGoogle Scholar
  11. Piry S, Luikart G, Cornuet JM (1999) BOTTLENECK: a computer program for detecting recent reductions in the effective population size using allele frequency data. J Hered 90:502–503CrossRefGoogle Scholar
  12. Schmitt T, Cizek O, Konvicka M (2005) Genetics of a butterfly relocation: large, small and introduced populations of the mountain endemic Erebia eoiphoron silesiana. Biol Conserv 123:11–18CrossRefGoogle Scholar
  13. Schönhuth S, Luikart G, Doadrio I (2003) Effects of a founder event and supplementary introductions on genetic variation in a captive breeding population of the endangered Spanish killfish. J Fish Biol 63:1538–1551CrossRefGoogle Scholar
  14. Spencer CC, Neigel JE, Leberg PL (2000) Experimental evaluation of the usefulness of microsatellite DNA for detecting demographic bottlenecks. Mol Ecol 9:1517–1528PubMedCrossRefGoogle Scholar
  15. Stockwell CA, Leberg PL (2002) Ecological genetics and the translocation of native fishes: emerging experimental approaches. West N Am Nat 62:32–38Google Scholar
  16. Sušnik S, Weiss S, Odak T, Delling B, Treer T, Snoj A (2007) Reticulate Evolution: ancient introgression of the Adriatic brown trout mtDNA in softmouth trout Salmo obtusirostris. Biol J Linn Soc In PressGoogle Scholar
  17. Šprem N, Tomljanović Z, Treer T (2005) Sastav ihtiocenoze rijeka Jadro I Žrnovnica u lipnju 2005. Završno izvješće. Sveučilišće u Zagrebu, HrvatskaGoogle Scholar
  18. Tallmon DA, Luikart G, Waples RS (2004) The alluring simplicity and complex reality of genetic rescue. Trends Ecol Evol 19:489–496PubMedCrossRefGoogle Scholar
  19. Treer T, Aničić I, Safner R, Odak T, Piria M (2003) Note on growth and condition of endemic soft-muzzled trout Salmothymus obtusirostris translocated into a Dalmatian river. Biologia, Bratislava, section Zoology 58:999–1001Google Scholar
  20. Williams CL, Serfass TL, Cogan R, Rhodes Jr OE (2002) Microsatellite variation in the reintroduced Pennsylvania elk herd. Mol Ecol 11:1299–1310Google Scholar
  21. Waples RS (2006) A bias correction of estimates of effective population size based on linkage disequilibrium of unlinked gene loci. Conserv Genet 7:167–184CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • Aleš Snoj
    • 1
    Email author
  • Andrej Razpet
    • 1
  • Tea Tomljanović
    • 2
  • Tomislav Treer
    • 2
  • Simona Sušnik
    • 1
  1. 1.Department of Animal Science, Biotechnical FacultyUniversity of LjubljanaDomžaleSlovenia
  2. 2.Department of Fisheries, Beekeeping and Special Zoology, Faculty of AgricultureUniversity of ZagrebZagrebCroatia

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