Geographic variation patterns of biological characters and environmental variables are compared by using a procedure employing multivariate analyses, production of contour maps by the kriging method with enclosed validation of estimates, and Mantel tests to assess the significance of comparisons. As biological material we chose a sample of Dolichopoda cave crickets populations from Central-Southern Italy. The kriging technique provides estimates of the interpolation error for each true and estimated point. This profitable feature offers the opportunity to use, with ascertained levels of confidence, the estimated z-scores for further analysis and to compare data collected within the same area, but not exactly coincident in location or number. In such a way, we were able to use for subsequent comparisons by means of Mantel tests the maximum number or data points for all data sets, which originally differed in sampling sites. The interpretation of the contour maps and their statistical comparison suggested that allozymes and epiphallus shape data sets follow the phylogenetic pathways within the Dolichopoda populations, whereas variation in leg elongation is almost entirely under the control of an environmental gradient, synthetically described by the cave temperature.

Cesaroni, D., Matarazzo, P., Allegrucci, G., & Sbordoni, V. (1997). Comparing patterns of geographic variation in cave crickets by combining geostatistic methods and Mantel tests. JOURNAL OF BIOGEOGRAPHY, 24(4), 419-431 [10.1111/j.1365-2699.1997.00104.x].

Comparing patterns of geographic variation in cave crickets by combining geostatistic methods and Mantel tests

CESARONI, DONATELLA;ALLEGRUCCI, GIULIANA;SBORDONI, VALERIO
1997

Abstract

Geographic variation patterns of biological characters and environmental variables are compared by using a procedure employing multivariate analyses, production of contour maps by the kriging method with enclosed validation of estimates, and Mantel tests to assess the significance of comparisons. As biological material we chose a sample of Dolichopoda cave crickets populations from Central-Southern Italy. The kriging technique provides estimates of the interpolation error for each true and estimated point. This profitable feature offers the opportunity to use, with ascertained levels of confidence, the estimated z-scores for further analysis and to compare data collected within the same area, but not exactly coincident in location or number. In such a way, we were able to use for subsequent comparisons by means of Mantel tests the maximum number or data points for all data sets, which originally differed in sampling sites. The interpretation of the contour maps and their statistical comparison suggested that allozymes and epiphallus shape data sets follow the phylogenetic pathways within the Dolichopoda populations, whereas variation in leg elongation is almost entirely under the control of an environmental gradient, synthetically described by the cave temperature.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore BIO/05
English
Con Impact Factor ISI
geographic variation; comparative analysis; kriging; Mantel test; Dolichopoda cave crickets
Cesaroni, D., Matarazzo, P., Allegrucci, G., & Sbordoni, V. (1997). Comparing patterns of geographic variation in cave crickets by combining geostatistic methods and Mantel tests. JOURNAL OF BIOGEOGRAPHY, 24(4), 419-431 [10.1111/j.1365-2699.1997.00104.x].
Cesaroni, D; Matarazzo, P; Allegrucci, G; Sbordoni, V
Articolo su rivista
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/52747
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 16
  • ???jsp.display-item.citation.isi??? 14
social impact