Morphological variation in British <i>Folsomia quadrioculata</i> Tullberg (Collembola: Isotomidae): a multivariate study

Wetton, Mark N.

doi:10.1111/j.1365-3113.1987.tb00201.x

Cited by 10 publications

(4 citation statements)

References 17 publications

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“…Dauod et al (1985) used Gabriel's approximate method to compare GM regression coefficients but did not examine the intercepts on the ordinate. Ordinary major axis regressions are usually compared using approximate 95 % confidence ellipses (e.g., Wetton, 1987).…”

Section: Reviewmentioning

confidence: 99%

The selection of suitable indices for the measurement and analysis of fish condition

Bolger

Connolly

1989

Journal of Fish Biology

826

532

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A survey of the studies published in two leading fisheries journals revealed that the analysis and measurement of condition, based on length-weight data, has been performed using a wide variety of indices and statistical procedures. Eight forms of index were identified which can be categorized into those which measure thecondition of individual fish, i.e. 'condition factors '.and those which measure the condition of subpopulations as a whole, i.e. regressions of log,,, weight on log,, length and the parameters of such regressions. Analysis of a test data set indicated that both the form of index and properties of the data set size can dictate the patterns of condition observed. The various indices were reviewed in terms of appropriateness, simplicity and statistical correctness. It was concluded that an index should be selected only after a detailed examination of both the underlying assumptions of the index and the properties of the data set.

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Section: Reviewmentioning

confidence: 99%

The selection of suitable indices for the measurement and analysis of fish condition

Bolger

Connolly

1989

Journal of Fish Biology

826

532

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“…'Cryptic diversity' in F. manolachei Some measure of intraspecific variability was observed in the chaetotaxy of several Folsomia species (e.g. Grow and Christiansen 1976;Wetton 1987;Potapov 2001;Tully and Potapov 2015), F. manolachei included (Deharveng 1982). Thus, a 'manolachei species complex' may potentially involve a larger number of different taxa.…”

Section: Discussionmentioning

confidence: 99%

The cold-adapted population ofFolsomia manolachei(Hexapoda, Collembola) from a glaciated karst doline of Central Europe: evidence for a cryptic species?

Raschmanová

Žurovcová

Kováč

et al. 2016

J Zool Syst Evol Res

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Folsomia manolachei Bagnall, 1939 (Collembola), is a widespread and common European species. However, it may represent a complex of species also associated with the climatically more extreme environments of the karst landforms. Three species of the genus Folsomia, distributed in the Slovak Karst region (Central Europe), namely three different populations of F. manolachei, and one population of F. penicula and F. candida, were analysed using a partial sequence of the mitochondrial cytochrome c oxidase subunit I (COI barcoding section). The DNA barcoding suggested the existence of cryptic diversity in populations of the eurytopic species Folsomia manolachei. The cold‐adapted population of ‘F. manolachei’ was abundant in primary soil on stony debris near the permanent floor ice (yearly air temperature ~0°C) in the collapsed karst doline of the Silická ľadnica Ice Cave. It showed a genetic differentiation supported by intra‐ and interspecific distances that ranged from 0.0% to 1.4% and from 19.2% to 24.0%, respectively. Analysis using Taxon DNA showed a large barcoding gap between intra‐ and interspecific COI sequences. Genetic differentiation suggests a scenario of cryptic speciation in the population of ‘F. manolachei’ occupying harsh soils near the floor ice. A survival test showed the different responses of ‘F. manolachei’ and other populations to low temperature. Within a temperature range from −3 to −10°C, the ‘F. manolachei’ population from Silická ľadnica was the most cold‐resistant, showing a lethal dose LD50 of −7.8°C. The two forest populations of F. manolachei had LD50 −6.1°C and −6.0°C, respectively; the most cold‐sensitive F. penicula showed an LD50 of −5.4°C. The survival of the tested springtails significantly decreased with temperature (p < 0.0001). The lethal temperature and the shape of the survival–temperature curves were different in different populations. The impact of population was significant at p < 0.0001, and the interaction between population and temperature at p < 0.039 was significant as well. Crypticity vs. phenotypic plasticity in Folsomia manolachei populations is discussed in terms of DNA barcoding and the cold tolerance data provided by this study.

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“…Wetton (1987) used principal components and canonical variates analysis to identify the various species of Collembola; Thorpe (1979) analyzed, using different multivariate methods, the racial affinities of Natrix natrix (L.) in Europe;and Pankakoski et al (1987) separated populations of muskrat with these methods. Wetton (1987) used principal components and canonical variates analysis to identify the various species of Collembola; Thorpe (1979) analyzed, using different multivariate methods, the racial affinities of Natrix natrix (L.) in Europe;and Pankakoski et al (1987) separated populations of muskrat with these methods.…”

Section: Introductionmentioning

confidence: 99%

TEMPERATURE-DEPENDENT DEVELOPMENT OF THE SPECKLED GREEN FRUITWORM, ORTHOSIA HIBISCI GUENÉE (LEPIDOPTERA: NOCTUIDAE)

et al. 1994

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The Canadzan Entomologist 126: 1251-1261 (1994) A study of different biornetric data of populations of Uroletrron (U.) pirridi.7 (F., 1775) sensu lato using canonical discriminant analysis resulted in the separation of two morphological groups. Exchange of host planls allowed us to conclude that the two goups correspond to two different species: Urol~rrmn (U.)pirridis and Urnleucon (U.) miewe sp.nov. This laner species was described and a key to the identification of both species was given. Tizado, E.J., et J.M. Nieto Nafria. 1994. Une nouvelle espkce d'Uroleucon (Hom. Aphididae) sur des Andryala: Une analyse multidimensionnelle. The Canadian Entomologist 126: 1251-1261. Resume Le traitement de diffkrentes series de donnCes biomktriques sur des populations d'Ui-obucon (U.) picridis (F., 1775) sensu lato au moyen d'une analyse canonique discriminante a mis en lumibre l'existence de deux groupes morphologiques diffkrents. Le remplacement des plantes h6tes a permis de conclure que les deux groupes correspondent B deux espbces: Uroleucon (U.)picridis et Uroleucon (U.) mierae sp.nov. On trouvera ici la description de la nouvelle espke ainsi qu'une clC d'identification des deux espbces. [Traduit par la RCdaction]

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Morphological variation in British Folsomia quadrioculata Tullberg (Collembola: Isotomidae): a multivariate study

Cited by 10 publications

References 17 publications

The selection of suitable indices for the measurement and analysis of fish condition

The selection of suitable indices for the measurement and analysis of fish condition

The cold-adapted population ofFolsomia manolachei(Hexapoda, Collembola) from a glaciated karst doline of Central Europe: evidence for a cryptic species?

TEMPERATURE-DEPENDENT DEVELOPMENT OF THE SPECKLED GREEN FRUITWORM, ORTHOSIA HIBISCI GUENÉE (LEPIDOPTERA: NOCTUIDAE)

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