Allozyme data and scallop stock identification

The allozyme data base of Arntzen & García-París (1995) on midwife toads (Alytes, Discoglossidae) is reanalysed considering each locus as a discrete character. The phylogeny thus inferred differs from the one obtained with genetic distances in the position of A. dickhilleni from the Betic region – it appears that its sister species is the widespread A. obstetricans, not the Mallorcan endemic A. muletensis. This phylogenetic hypothesis agrees with the taxonomic treatment of the genus based on morphology. A testable biogeographic hypothesis is proposed to account for the diversification of midwife toads in Iberia and the Balearics. The postulated underlying geological changes were the spread of inland saline lakes that divided Iberia (16 mY B.P.), the emergence and break-up of the Betic orogen (14 mY), and the formation of the Betic Strait (8 mY). Dispersal over sea channels or during the Messinian Crisis (6 mY) are deemed unlikely on the basis of ecological and biogeographical data.

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Trace elements in the otoliths of yellow-eye mullet (Aldrichetta forsteri) as an aid to stock identification

Fisheries Research ◽

10.1016/0165-7836(92)90032-o ◽

1992 ◽

Vol 13 (1) ◽

pp. 39-51 ◽

Cited By ~ 33

Author(s):

J.S. Edmonds ◽

R.C.J. Lenanton ◽

N. Caputi ◽

M. Morita

Keyword(s):

Trace Elements ◽

Stock Identification

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Comprehensive microsatellite baseline for genetic stock identification of Atlantic salmon (Salmo salar L.) in northernmost Europe

ICES Journal of Marine Science ◽

10.1093/icesjms/fsx041 ◽

2017 ◽

Vol 74 (8) ◽

pp. 2159-2169 ◽

Cited By ~ 11

Author(s):

Mikhail Ozerov ◽

Juha-Pekka Vähä ◽

Vidar Wennevik ◽

Eero Niemelä ◽

Martin-A. Svenning ◽

...

Keyword(s):

Atlantic Salmon ◽

Salmo Salar ◽

Stock Identification ◽

Genetic Stock ◽

Atlantic Salmon Salmo Salar ◽

Genetic Stock Identification

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Effects of sex, stock, and environment on the shape of known-age Atlantic cod (Gadus morhua) otoliths

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f03-151 ◽

2004 ◽

Vol 61 (2) ◽

pp. 158-167 ◽

Cited By ~ 166

Author(s):

M Cardinale ◽

P Doering-Arjes ◽

M Kastowsky ◽

H Mosegaard

Keyword(s):

Shape Analysis ◽

Gadus Morhua ◽

Atlantic Cod ◽

Fourier Descriptors ◽

Faroe Islands ◽

Stock Identification ◽

Relative Importance ◽

Age Classes ◽

Otolith Shape ◽

Left And Right

The effects of sex, stock, and environment on the shape of known-age Atlantic cod (Gadus morhua) otoliths from the Faroe Islands were investigated. Moreover, the feasibility of otolith shape analysis for stock identification was evaluated. The shape was described by using several normalized Fourier descriptors and morphometric variables. There were no consistent differences between the left and right otoliths and between sexes within different age classes, stocks, and environments. With our experimental design, we could evaluate the relative importance of genetic and environmental conditions (water temperature and diet regime) on otolith shape and morphometrics. Using otolith shape, cod individuals were significantly separated into Bank and Plateau stocks. Total classification success was between 79% and 85% between stocks and between 85% and 96% between environments for the different age classes. The significant differences in otolith shape between Faroe Bank and Faroe Plateau cod stocks provided a phenotypic basis for stock separation. Stock and environmental influences were substantial in determining the shape of cod otoliths.

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