Micro-PIXE analysis of strontium in Arctic char, Salvelinus alpinus, otoliths from Quttinirpaaq National Park, Nunavut, Canada

Babaluk, John A.; Campbell, John L.; Evans, Cody; Halden, Norman M.; Mejia, Sergio R.; Nejedlý, Zdeněk; Reist, James D.; Teesdale, W.J.

doi:10.1016/s0168-583x(01)01040-0

Cited by 14 publications

(10 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Otoliths were chemically analysed with a CAMECA SX100 electron microprobe (http://www.cameca.com). Transect lines were chosen on areas of the otolith where annular ring clarity was highest and spacing of annular rings was farthest apart (Howland et al ., 2001; Babaluk et al ., 2002). Specifications for the electron microbeam were decided upon based on previous analyses (Radtke et al ., 1998; Brown & Severin, 1999; Zimmerman & Nielsen, 2003; Brown et al ., 2007).…”

Section: Methodsmentioning

confidence: 99%

Ecological niche specialization inferred from morphological variation and otolith strontium of Arctic charr Salvelinus alpinus L. found within open lake systems of southern Baffin Island, Nunavut, Canada

Loewen

Gillis

Tallman

2009

Journal of Fish Biology

View full text Add to dashboard Cite

The presence of two morphotypes of Arctic charr Salvelinus alpinus was confirmed via morphological variation and otolith strontium (Sr) within three open-lake systems of southern Baffin Island, Nunavut, Canada: Qinngu (LH001), Iqalugaarjuit Lake (PG082) and Qasigiat (PG015). Analysis of otolith Sr indicates that a component of each S. alpinus population within lakes LH001 and PG082 is migratory (large-maturing S. alpinus), whereas another component is lake-resident (small-maturing S. alpinus). Alternatively, small and large maturing S. alpinus may both inhabit tidal habitats during their lifetime in lake PG015. Three morphological characters were identified by principal factor analysis (PFA) as characters that were different between maturity groups for all lakes studied: eye diameter, pectoral fin length and pelvic fin length. As well, upper jaw length (LH001 and PG082) and fork depth (PG015) were identified in PFA as traits that differed between morphs. Univariate tests of morphological characters identified by PFA demonstrated maturity group differences with the exception of eye diameter in Lake PG015 and upper jaw length and pelvic fin length in lake LH001. No difference was found in the MANOVA test of upper and lower gill raker number between small-maturing and undeveloped fish within all lakes studied. Clear morphological variation observed between small-maturing and undeveloped fish in all three lakes of the study suggests ecological niche separation between morphotypes. This is the first documented case of lake-resident S. alpinus use of the tidal habitat in the presence of a migratory large-maturing morphotype.

show abstract

Section: Methodsmentioning

confidence: 99%

Ecological niche specialization inferred from morphological variation and otolith strontium of Arctic charr Salvelinus alpinus L. found within open lake systems of southern Baffin Island, Nunavut, Canada

Loewen

Gillis

Tallman

2009

Journal of Fish Biology

View full text Add to dashboard Cite

show abstract

“…Identify source and timing of introduction of an exotic species Munro et al 2005 Timing and duration of metamorphosis Otake et al 1994;Arai et al 1999 Stock or population discrimination Babaluk et al 2002 also be estuarine dependent as Guay and Falkner (1998) found several negative correlations. Studies of the environmental history of fish could take advantage of the natural distribution of Ba in the water.…”

Section: Not Necessarily Linked To Diadromymentioning

confidence: 99%

Otolith chemistry to determine movements of diadromous and freshwater fish

Gillanders

2005

Aquat. Living Resour.

117

View full text Add to dashboard Cite

“…Later , the fish may have migrated to the sea again and then wandered in the estuarine area for several months, suggested by the Sr:Ca ratios in the 1050-1500 lm region. Most anadromous types exhibit annual migratory behavior [6]. It will be very helpful to collect older fish (more annuluses in otolith) to confirm its anadromous.…”

Section: Resultsmentioning

confidence: 99%

“…The Ca and trace elements stem mainly from the waters that the fish inhabits. Sr concentrations in seawater and freshwater are quite different, and such differences are reflected in the Sr content of otoliths of fish from different water bodies [6]. A positive relationship between otolith Sr and habitat salinities among freshwater, estuarine, and marine taxa have been observed [4].…”

Section: Introductionmentioning

confidence: 99%