Genetic and morphological variation of the lanternfish lampanyctodes hectoris (myctophiformes: myctophidae) off Southern Africa

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dc.contributor.authorFlorence, W. K.
dc.contributor.authorHulley, P. A.
dc.contributor.authorStewart, B. A.
dc.date.accessioned2023-02-08T07:19:51Z
dc.date.available2023-02-08T07:19:51Z
dc.date.issued2001
dc.description.abstractGenetic and morphological variation within the southern African population of Lampanyctodes hectoris was analysed. A total of 15 enzymes, encoding 22 isozyme loci, was examined (n = 327); seven were polymorphic. The percentage of polymorphic loci ranged from 13.6 to 27.3%. The mean heterozygosity was generally low and ranged from 0.003 to 0.005. Genetic divergences between specimens from four areas along the west coast of southern Africa were negligible, genetic distance values (D) ranging from 0 to 0.00011. The results showed the population of L. hectoris to be genetically invariant. Principal Component Analysis was performed separately on ratios of 13 morphometric and 6 meristic variables (n = 446), and there was evidence of extensive overlap between fish from all areas. However, discriminant analysis suggested some morphological variability within this population. Although genetically the population of L. hectoris seems to be homogenous, morphologically it appears to be variable. A combination of these results suggests that there is no clear genetic basis for the slight morphological differentiation within the population.en_US
dc.identifier.citationFlorence, W. K. et al. (2001). Genetic and morphological variation of the lanternfish lampanyctodes hectoris (myctophiformes: myctophidae) off Southern Africa. , South African Journal of Marine Science, 249(1), 193-203. 10.2989/025776102784528466en_US
dc.identifier.issn0257-7615
dc.identifier.urihttps://doi.org/10.2989/025776102784528466
dc.identifier.urihttp://hdl.handle.net/10566/8374
dc.language.isoenen_US
dc.publisherTaylor and Francis Groupen_US
dc.subjectAgulhas Banken_US
dc.subjectPopulation geneticsen_US
dc.subjectLanternfishen_US
dc.subjectSouthern Africaen_US
dc.subjectBiologyen_US
dc.titleGenetic and morphological variation of the lanternfish lampanyctodes hectoris (myctophiformes: myctophidae) off Southern Africaen_US
dc.typeArticleen_US

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