Parthenogenetic tetraploid (*); Parthenogenetic diploid (+); bisexual (o)
From for every single inhabitants a haphazard try is taken. Dogs have been anesthetized with some droplets out-of liquid soaked having chloroform and you will girls, usually over 20 (but LMT, hence undergone a leading mortality for the society) was in fact separated from the people. Next morphological details was in fact quantified in per female: overall length; intestinal duration; Plano dating service depth from 3rd intestinal segment; width of your ovisac; duration of furca; level of setae registered for each part of your furca; width regarding direct; maximal diameter and you may distance ranging from substance attention; length of earliest antenna; in addition to ratio intestinal length ? step one00/total size. Shape 2 portrays such previously mentioned human body tips. In all circumstances, an equivalent amount of people for each and every length interval was integrated in check to not ever bias overall performance from sampling. Preadult everyone was regarded as better.
This multivariate procedure provides a series of variables (Z1, Z2,…), Which are linear functions of the morphological variables studied, with the form Zn = ?1X2+?2X2+… (Where ?s are the calculated discriminant coefficients and Xs the variables being considered). They maximize the ong different groups of observations defined a priori (Anderson, 1984). Thus, the first discriminant function is the equation of a line cutting across the intermixed cluster of points representing the different observations. This function is constructed in such a way that the different predefined groups will evaluate it as differently as possible. Obviously, this will not be accomplished if the number of groups is high, and subsequent discriminant functions will be needed. Leer más «Parthenogenetic tetraploid (*); Parthenogenetic diploid (+); bisexual (o)»