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Migration history and stock structure of two putatively diadromous teleost fishes, as determined by genetic and otolith chemistry analyses

Schmidt, Daniel J., Crook, David A., Macdonald, Jed I., Huey, Joel A., Zampatti, Brenton P., Chilcott, Stuart, Raadik, Tarmo A. and Hughes, Jane M. (2014). Migration history and stock structure of two putatively diadromous teleost fishes, as determined by genetic and otolith chemistry analyses. Freshwater Science,33(1):193-206.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 3 times in Scopus Article | Citations

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IRMA ID 84376995xPUB35
Title Migration history and stock structure of two putatively diadromous teleost fishes, as determined by genetic and otolith chemistry analyses
Author Schmidt, Daniel J.
Crook, David A.
Macdonald, Jed I.
Huey, Joel A.
Zampatti, Brenton P.
Chilcott, Stuart
Raadik, Tarmo A.
Hughes, Jane M.
Journal Name Freshwater Science
Publication Date 2014
Volume Number 33
Issue Number 1
ISSN 2161-9565   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-84896332054
Start Page 193
End Page 206
Total Pages 14
Place of Publication United States of America
Publisher Society for Freshwater Science
HERDC Category C1 - Journal Article (DIISR)
Keywords Micosatellites
Mitochondrial DNA
Otolith chemistry
Sr isotopes
Migration
Standardized FST
Pseudaphritidae
Galaxiidae
DOI http://dx.doi.org/10.1086/674796   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
Additional Notes Migratory life cycles and population structure of 2 putatively diadromous Australian fishes were examined using otolith chemistry (87Sr/86Sr) and genetics (microsatellites and mitochondrial deoxyribonucleic acid [mtDNA]). Australian whitebait (Lovettia sealii) is widely considered to be one of only a few anadromous fish species in the southern hemisphere. The congolli or tupong (Pseudaphritis urvillii) is reported to undertake an unusual form of sexually segregated catadromous migration, where females switch habitats between marine and freshwater, while males remain in marine or estuarine environments. Sr-isotope profiles of L. sealii showed this species does not move into fully freshwater habitats during its life cycle, suggesting it should be considered semi-anadromous or estuarine-dependent, rather than truly anadromous. This life-history strategy is unique among the Galaxiidae. Lovettia sealii is regionally divided into at least 3 well differentiated genetic stocks: northern and southern Tasmanian coasts and mainland Australia. Sr-isotope profiles of P. urvillii showed that females are catadromous, with the early life history spent in the marine environment and a single migratory transition from marine to freshwater occurring at an early point in the life history. Lack of bidirectional adult migration between freshwater and the sea suggests that female P. urvillii are semelparous, returning to the marine habitat to mate with resident males after an extended period of freshwater residence. Pseudaphritis exhibit weak genetic structure across their mainland range. An isolation-by-distance relationship describes the genetic structure of this species, a pattern it shares with several other nearshore-restricted catadromous fishes.
Description for Link Link to publisher's version
URL http://www.jstor.org/stable/10.1086/674796
 
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