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Genetic heterogeneity in euphausiid populations: Euphausia krohnii and Nematoscelis megalops in North Atlantic Slope Water 1
Author(s) -
Bucklin Ann,
Wiebe Peter H.
Publication year - 1986
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1986.31.6.1346
Subject(s) - euphausia , intraspecific competition , biology , genetic distance , genetic heterogeneity , genetic variability , zoology , genetic variation , ecology , genetics , crustacean , gene , genotype , phenotype
Genetic heterogeneity of samples of Euphausia krohnii and Nematoscelis megalops collected from a 6,000‐km 2 area in western North Atlantic Slope Water was investigated by electrophoretic assay of allozymic variability at eight enzyme loci. Both species exhibited significant among‐sample heterogeneity of allozyme frequencies. Genetic distances between samples were large for intraspecific comparisons ( D̄ = 0.116 for E. krohnii and D̄ = 0.203 for N. megalops ). This heterogeneity indicates that both species are genetically structured.