An Improved Graphical Analysis and Comparison of Series of Samples

Hubbs, Carl L.; Hubbs, Clark

doi:10.2307/2411659

Cited by 67 publications

(41 citation statements)

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“…These results suggest that these characteristics differentiate regional intra-specific morphotypes, probably in response to ocean-climate variation within the distributional range. Morphological variation of similar groups within a species has been noted in other studies by measuring the means and ranges along a geographical gradient, as in Chilean hake, anchovies, and sardines (Hubbs 1925;Hubbs and Hubbs 1953;Blackburn 1967;Martínez 1976;Hadfield et al 1979).…”

Section: Mang Mher Mprosupporting

confidence: 56%

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Clarifying the taxonomic status of Merluccius spp. in the northeastern Pacific: a combined morphological and molecular approach

Silva-Segundo¹,

Brito-Chavarria

Balart

et al. 2010

Rev Fish Biol Fisheries

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The taxonomic status of hake (Merluccius spp.) in the northeastern Pacific is unclear. Hakes in this region are Merluccius productus, M. angustimanus, M. hernandezi, and a morphotype known as dwarf hake. Of these, only the first two species are currently valid. Descriptions in previous studies have been limited by overlapping morphological characteristic, lack of biological material, and limited numbers of sampling localities. To clarify their taxonomy, 461 hake were obtained from eight localities along the North American coast for morphological and mitochondrial DNA sequence analyses (cytochrome b, cytochrome c oxidase subunit I, and 16S ribosomal rDNA). Morphological and molecular analyses suggest that hake in this region represent a continuum of a single species with some levels of morphological and genetic intra-specific variation. In light of these results, we propose that M. productus is the only species of hake present along the North American and northern Central American coast.

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Section: Mang Mher Mprosupporting

confidence: 56%

“…These characteristics were used for graphic comparisons following a method similar to Hubbs and Hubbs (1953), which uses the mean, range, and 95% confidence intervals of individual characteristics. To verify the existence of clinal or allometric effects on these characteristics, multiple linear regressions were performed.…”

Section: Morphological Analysismentioning

confidence: 99%

Clarifying the taxonomic status of Merluccius spp. in the northeastern Pacific: a combined morphological and molecular approach

Silva-Segundo¹,

Brito-Chavarria

Balart

et al. 2010

Rev Fish Biol Fisheries

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“…The S. reticulata complex was analyzed by the use of scatter diagrams and Dice-grams (Hubbs and Hubbs 1953). In the Dice-grams the difference between the two means is statistically significant if the bars representing four standard errors do not overlap or just touch (Critchfield 1957;Argus 1986).…”

Section: Methodsmentioning

confidence: 99%

Studies of the Salix lucida and Salix reticulata complexes in North America

Argus¹

1986

Can. J. Bot.

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A study of morphological variation in the Salix lucida complex revealed three geographical races: one in northeastern North America, a second in western North America extending from Alaska to California, and a third in the southern Rocky Mountains, S. lucida ssp. lucida, Salix lucida ssp. lasiandra comb, nov., and Salix lucida ssp. caudata comb, nov., respectively. The Salix reticulata complex in the Rocky Mountain region is represented by two geographical races, ssp. reticulata in the north and ssp. nivalis in the south. Variation in ssp. nivalis suggests that hybridization and introgression occur where the two races overlap, and that the results of past hybridization are still evident in the southern Rocky Mountains.

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“…These refinements, like those of Dice and Leraas, made sense in practical problems and have also come into general use. Hubbs and Hubbs (1953) refined graphic presentation (Fig. 1A) without any new mathematical considerations.…”

Section: Quantitative Methods In Taxonomymentioning

confidence: 99%

Taxonomic Methods, Their Bearing on Subspeciation

Pimentel¹

1958

Systematic Biology

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An Improved Graphical Analysis and Comparison of Series of Samples

Cited by 67 publications

References 0 publications

Clarifying the taxonomic status of Merluccius spp. in the northeastern Pacific: a combined morphological and molecular approach

Clarifying the taxonomic status of Merluccius spp. in the northeastern Pacific: a combined morphological and molecular approach

Studies of the Salix lucida and Salix reticulata complexes in North America

Taxonomic Methods, Their Bearing on Subspeciation

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