Univariate and multivariate one-factor analyses of variance (ANOVA and MANOVA) were applied to examine the effect of the ÒgenderÓ factor on some measurements of diapausing larva and cocoon in Neodryinus typhlocybae (Ashmead) (Hymenoptera Dryinidae). This species was introduced into Italy in 1987 for the biological control of the Nearctic planthopper Metcalfa pruinosa (Say) (Hemiptera Flatidae). Five measurements were taken of each specimen: length (Le) and width (Wi) of the cocoon wall; length (le) and width (wi) of the larval chamber and length of the diapausing larva (dll). Results of MANOVAindicate that all the considered morphometric variables are influenced by the Ògender Ó factor. Results of ANOVAs indicate that length and width of the larval chamber and the length of the diapausing larva are the variables more strictly correlated with the gender.
Morphometric studies in Neodryinus typhlocybae (Ashmead) (Hymenoptera : Dryinidae) diapausing larvae and cocoons in Italy: A multivariate approach
NALI, CRISTINA;LUCCHI, ANDREA
2006-01-01
Abstract
Univariate and multivariate one-factor analyses of variance (ANOVA and MANOVA) were applied to examine the effect of the ÒgenderÓ factor on some measurements of diapausing larva and cocoon in Neodryinus typhlocybae (Ashmead) (Hymenoptera Dryinidae). This species was introduced into Italy in 1987 for the biological control of the Nearctic planthopper Metcalfa pruinosa (Say) (Hemiptera Flatidae). Five measurements were taken of each specimen: length (Le) and width (Wi) of the cocoon wall; length (le) and width (wi) of the larval chamber and length of the diapausing larva (dll). Results of MANOVAindicate that all the considered morphometric variables are influenced by the Ògender Ó factor. Results of ANOVAs indicate that length and width of the larval chamber and the length of the diapausing larva are the variables more strictly correlated with the gender.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
