TY - JOUR
T1 - Multivariate analyses of Canadian and Japanese populations of Glycyphagus destructor (Schrank) (Acarina, Glycyphagidae)
AU - Sinha, R.N.
AU - Bronswijk, van, J.E.M.H.
PY - 1970
Y1 - 1970
N2 - Two multivariate statistical procedures were used to determine the basic trends
of morphologic and geographic variations between males of a common stored-grain
mite, Glycyphagus destructor (ScHRANK) collected from Canada and Japan. All analyses
were carried out on physical measurements of 25 morphological features. Three principal
component analyses based on the Canadian (50 specimens), Japanese (50 specimens)
and the combined populations from the 2 countries (100 specimens) revealed that the
first component, accounting for 40% of the variability, in all 3 solutions represented
a measure of the morphologic dimension of the body. The second component, which
explained over 18% of the variability, is a measure of the leg dimension.
Smaller clusters of variates characteristic of the population from each county were
also evident. Discriminant analysis, performed with the Canadian and Japanese
populations, identified the variates that differed between the 2 populations and provided
an approximate appraisal of interrelations. The general conclusion based on these
analyses is that the Canadian and the Japanese populations are morphologically distinct.
The difference is most evident in the diameters of genu 2, lengths of the sensory
seta W~, lengths of the body, and the distances between the vertical external setae.
AB - Two multivariate statistical procedures were used to determine the basic trends
of morphologic and geographic variations between males of a common stored-grain
mite, Glycyphagus destructor (ScHRANK) collected from Canada and Japan. All analyses
were carried out on physical measurements of 25 morphological features. Three principal
component analyses based on the Canadian (50 specimens), Japanese (50 specimens)
and the combined populations from the 2 countries (100 specimens) revealed that the
first component, accounting for 40% of the variability, in all 3 solutions represented
a measure of the morphologic dimension of the body. The second component, which
explained over 18% of the variability, is a measure of the leg dimension.
Smaller clusters of variates characteristic of the population from each county were
also evident. Discriminant analysis, performed with the Canadian and Japanese
populations, identified the variates that differed between the 2 populations and provided
an approximate appraisal of interrelations. The general conclusion based on these
analyses is that the Canadian and the Japanese populations are morphologically distinct.
The difference is most evident in the diameters of genu 2, lengths of the sensory
seta W~, lengths of the body, and the distances between the vertical external setae.
U2 - 10.1007/BF02511563
DO - 10.1007/BF02511563
M3 - Article
VL - 12
SP - 205
EP - 217
JO - Researches on Population Ecology
JF - Researches on Population Ecology
SN - 0034-5466
IS - 2
ER -